/* Expand builtin functions.
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/* Expand builtin functions.
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Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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Software Foundation; either version 3, or (at your option) any later
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version.
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "config.h"
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#include "system.h"
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#include "system.h"
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#include "coretypes.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tm.h"
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#include "machmode.h"
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#include "machmode.h"
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#include "real.h"
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#include "real.h"
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#include "rtl.h"
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#include "rtl.h"
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#include "tree.h"
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#include "tree.h"
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#include "tree-gimple.h"
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#include "tree-gimple.h"
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#include "flags.h"
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#include "flags.h"
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#include "regs.h"
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#include "regs.h"
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#include "hard-reg-set.h"
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#include "hard-reg-set.h"
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#include "except.h"
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#include "except.h"
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#include "function.h"
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#include "function.h"
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#include "insn-config.h"
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#include "insn-config.h"
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#include "expr.h"
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#include "expr.h"
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#include "optabs.h"
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#include "optabs.h"
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#include "libfuncs.h"
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#include "libfuncs.h"
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#include "recog.h"
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#include "recog.h"
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#include "output.h"
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#include "output.h"
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#include "typeclass.h"
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#include "typeclass.h"
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#include "toplev.h"
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#include "toplev.h"
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#include "predict.h"
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#include "predict.h"
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#include "tm_p.h"
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#include "tm_p.h"
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#include "target.h"
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#include "target.h"
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#include "langhooks.h"
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#include "langhooks.h"
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#include "basic-block.h"
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#include "basic-block.h"
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#include "tree-mudflap.h"
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#include "tree-mudflap.h"
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|
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#ifndef PAD_VARARGS_DOWN
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#ifndef PAD_VARARGS_DOWN
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#define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
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#define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
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#endif
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#endif
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/* Define the names of the builtin function types and codes. */
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/* Define the names of the builtin function types and codes. */
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const char *const built_in_class_names[4]
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const char *const built_in_class_names[4]
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= {"NOT_BUILT_IN", "BUILT_IN_FRONTEND", "BUILT_IN_MD", "BUILT_IN_NORMAL"};
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= {"NOT_BUILT_IN", "BUILT_IN_FRONTEND", "BUILT_IN_MD", "BUILT_IN_NORMAL"};
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#define DEF_BUILTIN(X, N, C, T, LT, B, F, NA, AT, IM, COND) #X,
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#define DEF_BUILTIN(X, N, C, T, LT, B, F, NA, AT, IM, COND) #X,
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const char * built_in_names[(int) END_BUILTINS] =
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const char * built_in_names[(int) END_BUILTINS] =
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{
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{
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#include "builtins.def"
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#include "builtins.def"
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};
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};
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#undef DEF_BUILTIN
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#undef DEF_BUILTIN
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/* Setup an array of _DECL trees, make sure each element is
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/* Setup an array of _DECL trees, make sure each element is
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initialized to NULL_TREE. */
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initialized to NULL_TREE. */
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tree built_in_decls[(int) END_BUILTINS];
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tree built_in_decls[(int) END_BUILTINS];
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/* Declarations used when constructing the builtin implicitly in the compiler.
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/* Declarations used when constructing the builtin implicitly in the compiler.
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It may be NULL_TREE when this is invalid (for instance runtime is not
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It may be NULL_TREE when this is invalid (for instance runtime is not
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required to implement the function call in all cases). */
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required to implement the function call in all cases). */
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tree implicit_built_in_decls[(int) END_BUILTINS];
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tree implicit_built_in_decls[(int) END_BUILTINS];
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static int get_pointer_alignment (tree, unsigned int);
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static int get_pointer_alignment (tree, unsigned int);
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static const char *c_getstr (tree);
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static const char *c_getstr (tree);
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static rtx c_readstr (const char *, enum machine_mode);
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static rtx c_readstr (const char *, enum machine_mode);
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static int target_char_cast (tree, char *);
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static int target_char_cast (tree, char *);
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static rtx get_memory_rtx (tree, tree);
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static rtx get_memory_rtx (tree, tree);
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static int apply_args_size (void);
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static int apply_args_size (void);
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static int apply_result_size (void);
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static int apply_result_size (void);
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#if defined (HAVE_untyped_call) || defined (HAVE_untyped_return)
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#if defined (HAVE_untyped_call) || defined (HAVE_untyped_return)
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static rtx result_vector (int, rtx);
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static rtx result_vector (int, rtx);
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#endif
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#endif
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static void expand_builtin_update_setjmp_buf (rtx);
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static void expand_builtin_update_setjmp_buf (rtx);
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static void expand_builtin_prefetch (tree);
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static void expand_builtin_prefetch (tree);
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static rtx expand_builtin_apply_args (void);
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static rtx expand_builtin_apply_args (void);
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static rtx expand_builtin_apply_args_1 (void);
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static rtx expand_builtin_apply_args_1 (void);
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static rtx expand_builtin_apply (rtx, rtx, rtx);
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static rtx expand_builtin_apply (rtx, rtx, rtx);
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static void expand_builtin_return (rtx);
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static void expand_builtin_return (rtx);
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static enum type_class type_to_class (tree);
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static enum type_class type_to_class (tree);
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static rtx expand_builtin_classify_type (tree);
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static rtx expand_builtin_classify_type (tree);
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static void expand_errno_check (tree, rtx);
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static void expand_errno_check (tree, rtx);
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static rtx expand_builtin_mathfn (tree, rtx, rtx);
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static rtx expand_builtin_mathfn (tree, rtx, rtx);
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static rtx expand_builtin_mathfn_2 (tree, rtx, rtx);
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static rtx expand_builtin_mathfn_2 (tree, rtx, rtx);
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static rtx expand_builtin_mathfn_3 (tree, rtx, rtx);
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static rtx expand_builtin_mathfn_3 (tree, rtx, rtx);
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static rtx expand_builtin_sincos (tree);
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static rtx expand_builtin_sincos (tree);
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static rtx expand_builtin_int_roundingfn (tree, rtx, rtx);
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static rtx expand_builtin_int_roundingfn (tree, rtx, rtx);
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static rtx expand_builtin_args_info (tree);
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static rtx expand_builtin_args_info (tree);
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static rtx expand_builtin_next_arg (void);
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static rtx expand_builtin_next_arg (void);
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static rtx expand_builtin_va_start (tree);
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static rtx expand_builtin_va_start (tree);
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static rtx expand_builtin_va_end (tree);
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static rtx expand_builtin_va_end (tree);
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static rtx expand_builtin_va_copy (tree);
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static rtx expand_builtin_va_copy (tree);
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static rtx expand_builtin_memcmp (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_memcmp (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strcmp (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strcmp (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strncmp (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strncmp (tree, rtx, enum machine_mode);
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static rtx builtin_memcpy_read_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx builtin_memcpy_read_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx expand_builtin_strcat (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strcat (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strncat (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strncat (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strspn (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strspn (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strcspn (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strcspn (tree, rtx, enum machine_mode);
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static rtx expand_builtin_memcpy (tree, rtx, enum machine_mode);
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static rtx expand_builtin_memcpy (tree, rtx, enum machine_mode);
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static rtx expand_builtin_mempcpy (tree, tree, rtx, enum machine_mode, int);
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static rtx expand_builtin_mempcpy (tree, tree, rtx, enum machine_mode, int);
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static rtx expand_builtin_memmove (tree, tree, rtx, enum machine_mode, tree);
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static rtx expand_builtin_memmove (tree, tree, rtx, enum machine_mode, tree);
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static rtx expand_builtin_bcopy (tree);
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static rtx expand_builtin_bcopy (tree);
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static rtx expand_builtin_strcpy (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strcpy (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_stpcpy (tree, rtx, enum machine_mode);
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static rtx expand_builtin_stpcpy (tree, rtx, enum machine_mode);
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static rtx builtin_strncpy_read_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx builtin_strncpy_read_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx expand_builtin_strncpy (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strncpy (tree, rtx, enum machine_mode);
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static rtx builtin_memset_read_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx builtin_memset_read_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx builtin_memset_gen_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx builtin_memset_gen_str (void *, HOST_WIDE_INT, enum machine_mode);
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static rtx expand_builtin_memset (tree, rtx, enum machine_mode, tree);
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static rtx expand_builtin_memset (tree, rtx, enum machine_mode, tree);
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static rtx expand_builtin_bzero (tree);
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static rtx expand_builtin_bzero (tree);
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static rtx expand_builtin_strlen (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strlen (tree, rtx, enum machine_mode);
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static rtx expand_builtin_strstr (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strstr (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strpbrk (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strpbrk (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strchr (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strchr (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strrchr (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_strrchr (tree, tree, rtx, enum machine_mode);
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static rtx expand_builtin_alloca (tree, rtx);
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static rtx expand_builtin_alloca (tree, rtx);
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static rtx expand_builtin_unop (enum machine_mode, tree, rtx, rtx, optab);
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static rtx expand_builtin_unop (enum machine_mode, tree, rtx, rtx, optab);
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static rtx expand_builtin_frame_address (tree, tree);
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static rtx expand_builtin_frame_address (tree, tree);
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static rtx expand_builtin_fputs (tree, rtx, bool);
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static rtx expand_builtin_fputs (tree, rtx, bool);
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static rtx expand_builtin_printf (tree, rtx, enum machine_mode, bool);
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static rtx expand_builtin_printf (tree, rtx, enum machine_mode, bool);
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static rtx expand_builtin_fprintf (tree, rtx, enum machine_mode, bool);
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static rtx expand_builtin_fprintf (tree, rtx, enum machine_mode, bool);
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static rtx expand_builtin_sprintf (tree, rtx, enum machine_mode);
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static rtx expand_builtin_sprintf (tree, rtx, enum machine_mode);
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static tree stabilize_va_list (tree, int);
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static tree stabilize_va_list (tree, int);
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static rtx expand_builtin_expect (tree, rtx);
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static rtx expand_builtin_expect (tree, rtx);
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static tree fold_builtin_constant_p (tree);
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static tree fold_builtin_constant_p (tree);
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static tree fold_builtin_classify_type (tree);
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static tree fold_builtin_classify_type (tree);
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static tree fold_builtin_strlen (tree);
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static tree fold_builtin_strlen (tree);
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static tree fold_builtin_inf (tree, int);
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static tree fold_builtin_inf (tree, int);
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static tree fold_builtin_nan (tree, tree, int);
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static tree fold_builtin_nan (tree, tree, int);
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static int validate_arglist (tree, ...);
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static int validate_arglist (tree, ...);
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static bool integer_valued_real_p (tree);
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static bool integer_valued_real_p (tree);
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static tree fold_trunc_transparent_mathfn (tree, tree);
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static tree fold_trunc_transparent_mathfn (tree, tree);
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static bool readonly_data_expr (tree);
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static bool readonly_data_expr (tree);
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static rtx expand_builtin_fabs (tree, rtx, rtx);
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static rtx expand_builtin_fabs (tree, rtx, rtx);
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static rtx expand_builtin_signbit (tree, rtx);
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static rtx expand_builtin_signbit (tree, rtx);
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static tree fold_builtin_sqrt (tree, tree);
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static tree fold_builtin_sqrt (tree, tree);
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static tree fold_builtin_cbrt (tree, tree);
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static tree fold_builtin_cbrt (tree, tree);
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static tree fold_builtin_pow (tree, tree, tree);
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static tree fold_builtin_pow (tree, tree, tree);
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static tree fold_builtin_powi (tree, tree, tree);
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static tree fold_builtin_powi (tree, tree, tree);
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static tree fold_builtin_sin (tree);
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static tree fold_builtin_sin (tree);
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static tree fold_builtin_cos (tree, tree, tree);
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static tree fold_builtin_cos (tree, tree, tree);
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static tree fold_builtin_tan (tree);
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static tree fold_builtin_tan (tree);
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static tree fold_builtin_atan (tree, tree);
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static tree fold_builtin_atan (tree, tree);
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static tree fold_builtin_trunc (tree, tree);
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static tree fold_builtin_trunc (tree, tree);
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static tree fold_builtin_floor (tree, tree);
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static tree fold_builtin_floor (tree, tree);
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static tree fold_builtin_ceil (tree, tree);
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static tree fold_builtin_ceil (tree, tree);
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static tree fold_builtin_round (tree, tree);
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static tree fold_builtin_round (tree, tree);
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static tree fold_builtin_int_roundingfn (tree, tree);
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static tree fold_builtin_int_roundingfn (tree, tree);
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static tree fold_builtin_bitop (tree, tree);
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static tree fold_builtin_bitop (tree, tree);
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static tree fold_builtin_memory_op (tree, tree, bool, int);
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static tree fold_builtin_memory_op (tree, tree, bool, int);
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static tree fold_builtin_strchr (tree, tree);
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static tree fold_builtin_strchr (tree, tree);
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static tree fold_builtin_memcmp (tree);
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static tree fold_builtin_memcmp (tree);
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static tree fold_builtin_strcmp (tree);
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static tree fold_builtin_strcmp (tree);
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static tree fold_builtin_strncmp (tree);
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static tree fold_builtin_strncmp (tree);
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static tree fold_builtin_signbit (tree, tree);
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static tree fold_builtin_signbit (tree, tree);
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static tree fold_builtin_copysign (tree, tree, tree);
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static tree fold_builtin_copysign (tree, tree, tree);
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static tree fold_builtin_isascii (tree);
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static tree fold_builtin_isascii (tree);
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static tree fold_builtin_toascii (tree);
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static tree fold_builtin_toascii (tree);
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static tree fold_builtin_isdigit (tree);
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static tree fold_builtin_isdigit (tree);
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static tree fold_builtin_fabs (tree, tree);
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static tree fold_builtin_fabs (tree, tree);
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static tree fold_builtin_abs (tree, tree);
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static tree fold_builtin_abs (tree, tree);
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static tree fold_builtin_unordered_cmp (tree, tree, enum tree_code,
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static tree fold_builtin_unordered_cmp (tree, tree, enum tree_code,
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enum tree_code);
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enum tree_code);
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static tree fold_builtin_1 (tree, tree, bool);
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static tree fold_builtin_1 (tree, tree, bool);
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|
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static tree fold_builtin_strpbrk (tree, tree);
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static tree fold_builtin_strpbrk (tree, tree);
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static tree fold_builtin_strstr (tree, tree);
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static tree fold_builtin_strstr (tree, tree);
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static tree fold_builtin_strrchr (tree, tree);
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static tree fold_builtin_strrchr (tree, tree);
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static tree fold_builtin_strcat (tree);
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static tree fold_builtin_strcat (tree);
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static tree fold_builtin_strncat (tree);
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static tree fold_builtin_strncat (tree);
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static tree fold_builtin_strspn (tree);
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static tree fold_builtin_strspn (tree);
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static tree fold_builtin_strcspn (tree);
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static tree fold_builtin_strcspn (tree);
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static tree fold_builtin_sprintf (tree, int);
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static tree fold_builtin_sprintf (tree, int);
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|
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static rtx expand_builtin_object_size (tree);
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static rtx expand_builtin_object_size (tree);
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static rtx expand_builtin_memory_chk (tree, rtx, enum machine_mode,
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static rtx expand_builtin_memory_chk (tree, rtx, enum machine_mode,
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enum built_in_function);
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enum built_in_function);
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static void maybe_emit_chk_warning (tree, enum built_in_function);
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static void maybe_emit_chk_warning (tree, enum built_in_function);
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static void maybe_emit_sprintf_chk_warning (tree, enum built_in_function);
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static void maybe_emit_sprintf_chk_warning (tree, enum built_in_function);
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static tree fold_builtin_object_size (tree);
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static tree fold_builtin_object_size (tree);
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static tree fold_builtin_strcat_chk (tree, tree);
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static tree fold_builtin_strcat_chk (tree, tree);
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static tree fold_builtin_strncat_chk (tree, tree);
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static tree fold_builtin_strncat_chk (tree, tree);
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static tree fold_builtin_sprintf_chk (tree, enum built_in_function);
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static tree fold_builtin_sprintf_chk (tree, enum built_in_function);
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static tree fold_builtin_printf (tree, tree, bool, enum built_in_function);
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static tree fold_builtin_printf (tree, tree, bool, enum built_in_function);
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static tree fold_builtin_fprintf (tree, tree, bool, enum built_in_function);
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static tree fold_builtin_fprintf (tree, tree, bool, enum built_in_function);
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static bool init_target_chars (void);
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static bool init_target_chars (void);
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|
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static unsigned HOST_WIDE_INT target_newline;
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static unsigned HOST_WIDE_INT target_newline;
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static unsigned HOST_WIDE_INT target_percent;
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static unsigned HOST_WIDE_INT target_percent;
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static unsigned HOST_WIDE_INT target_c;
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static unsigned HOST_WIDE_INT target_c;
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static unsigned HOST_WIDE_INT target_s;
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static unsigned HOST_WIDE_INT target_s;
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static char target_percent_c[3];
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static char target_percent_c[3];
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static char target_percent_s[3];
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static char target_percent_s[3];
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static char target_percent_s_newline[4];
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static char target_percent_s_newline[4];
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|
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/* Return true if NODE should be considered for inline expansion regardless
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/* Return true if NODE should be considered for inline expansion regardless
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of the optimization level. This means whenever a function is invoked with
|
of the optimization level. This means whenever a function is invoked with
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its "internal" name, which normally contains the prefix "__builtin". */
|
its "internal" name, which normally contains the prefix "__builtin". */
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|
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static bool called_as_built_in (tree node)
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static bool called_as_built_in (tree node)
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{
|
{
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const char *name = IDENTIFIER_POINTER (DECL_NAME (node));
|
const char *name = IDENTIFIER_POINTER (DECL_NAME (node));
|
if (strncmp (name, "__builtin_", 10) == 0)
|
if (strncmp (name, "__builtin_", 10) == 0)
|
return true;
|
return true;
|
if (strncmp (name, "__sync_", 7) == 0)
|
if (strncmp (name, "__sync_", 7) == 0)
|
return true;
|
return true;
|
return false;
|
return false;
|
}
|
}
|
|
|
/* Return the alignment in bits of EXP, a pointer valued expression.
|
/* Return the alignment in bits of EXP, a pointer valued expression.
|
But don't return more than MAX_ALIGN no matter what.
|
But don't return more than MAX_ALIGN no matter what.
|
The alignment returned is, by default, the alignment of the thing that
|
The alignment returned is, by default, the alignment of the thing that
|
EXP points to. If it is not a POINTER_TYPE, 0 is returned.
|
EXP points to. If it is not a POINTER_TYPE, 0 is returned.
|
|
|
Otherwise, look at the expression to see if we can do better, i.e., if the
|
Otherwise, look at the expression to see if we can do better, i.e., if the
|
expression is actually pointing at an object whose alignment is tighter. */
|
expression is actually pointing at an object whose alignment is tighter. */
|
|
|
static int
|
static int
|
get_pointer_alignment (tree exp, unsigned int max_align)
|
get_pointer_alignment (tree exp, unsigned int max_align)
|
{
|
{
|
unsigned int align, inner;
|
unsigned int align, inner;
|
|
|
/* We rely on TER to compute accurate alignment information. */
|
/* We rely on TER to compute accurate alignment information. */
|
if (!(optimize && flag_tree_ter))
|
if (!(optimize && flag_tree_ter))
|
return 0;
|
return 0;
|
|
|
if (!POINTER_TYPE_P (TREE_TYPE (exp)))
|
if (!POINTER_TYPE_P (TREE_TYPE (exp)))
|
return 0;
|
return 0;
|
|
|
align = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp)));
|
align = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp)));
|
align = MIN (align, max_align);
|
align = MIN (align, max_align);
|
|
|
while (1)
|
while (1)
|
{
|
{
|
switch (TREE_CODE (exp))
|
switch (TREE_CODE (exp))
|
{
|
{
|
case NOP_EXPR:
|
case NOP_EXPR:
|
case CONVERT_EXPR:
|
case CONVERT_EXPR:
|
case NON_LVALUE_EXPR:
|
case NON_LVALUE_EXPR:
|
exp = TREE_OPERAND (exp, 0);
|
exp = TREE_OPERAND (exp, 0);
|
if (! POINTER_TYPE_P (TREE_TYPE (exp)))
|
if (! POINTER_TYPE_P (TREE_TYPE (exp)))
|
return align;
|
return align;
|
|
|
inner = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp)));
|
inner = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp)));
|
align = MIN (inner, max_align);
|
align = MIN (inner, max_align);
|
break;
|
break;
|
|
|
case PLUS_EXPR:
|
case PLUS_EXPR:
|
/* If sum of pointer + int, restrict our maximum alignment to that
|
/* If sum of pointer + int, restrict our maximum alignment to that
|
imposed by the integer. If not, we can't do any better than
|
imposed by the integer. If not, we can't do any better than
|
ALIGN. */
|
ALIGN. */
|
if (! host_integerp (TREE_OPERAND (exp, 1), 1))
|
if (! host_integerp (TREE_OPERAND (exp, 1), 1))
|
return align;
|
return align;
|
|
|
while (((tree_low_cst (TREE_OPERAND (exp, 1), 1))
|
while (((tree_low_cst (TREE_OPERAND (exp, 1), 1))
|
& (max_align / BITS_PER_UNIT - 1))
|
& (max_align / BITS_PER_UNIT - 1))
|
!= 0)
|
!= 0)
|
max_align >>= 1;
|
max_align >>= 1;
|
|
|
exp = TREE_OPERAND (exp, 0);
|
exp = TREE_OPERAND (exp, 0);
|
break;
|
break;
|
|
|
case ADDR_EXPR:
|
case ADDR_EXPR:
|
/* See what we are pointing at and look at its alignment. */
|
/* See what we are pointing at and look at its alignment. */
|
exp = TREE_OPERAND (exp, 0);
|
exp = TREE_OPERAND (exp, 0);
|
inner = max_align;
|
inner = max_align;
|
if (handled_component_p (exp))
|
if (handled_component_p (exp))
|
{
|
{
|
HOST_WIDE_INT bitsize, bitpos;
|
HOST_WIDE_INT bitsize, bitpos;
|
tree offset;
|
tree offset;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
int unsignedp, volatilep;
|
int unsignedp, volatilep;
|
|
|
exp = get_inner_reference (exp, &bitsize, &bitpos, &offset,
|
exp = get_inner_reference (exp, &bitsize, &bitpos, &offset,
|
&mode, &unsignedp, &volatilep, true);
|
&mode, &unsignedp, &volatilep, true);
|
if (bitpos)
|
if (bitpos)
|
inner = MIN (inner, (unsigned) (bitpos & -bitpos));
|
inner = MIN (inner, (unsigned) (bitpos & -bitpos));
|
if (offset && TREE_CODE (offset) == PLUS_EXPR
|
if (offset && TREE_CODE (offset) == PLUS_EXPR
|
&& host_integerp (TREE_OPERAND (offset, 1), 1))
|
&& host_integerp (TREE_OPERAND (offset, 1), 1))
|
{
|
{
|
/* Any overflow in calculating offset_bits won't change
|
/* Any overflow in calculating offset_bits won't change
|
the alignment. */
|
the alignment. */
|
unsigned offset_bits
|
unsigned offset_bits
|
= ((unsigned) tree_low_cst (TREE_OPERAND (offset, 1), 1)
|
= ((unsigned) tree_low_cst (TREE_OPERAND (offset, 1), 1)
|
* BITS_PER_UNIT);
|
* BITS_PER_UNIT);
|
|
|
if (offset_bits)
|
if (offset_bits)
|
inner = MIN (inner, (offset_bits & -offset_bits));
|
inner = MIN (inner, (offset_bits & -offset_bits));
|
offset = TREE_OPERAND (offset, 0);
|
offset = TREE_OPERAND (offset, 0);
|
}
|
}
|
if (offset && TREE_CODE (offset) == MULT_EXPR
|
if (offset && TREE_CODE (offset) == MULT_EXPR
|
&& host_integerp (TREE_OPERAND (offset, 1), 1))
|
&& host_integerp (TREE_OPERAND (offset, 1), 1))
|
{
|
{
|
/* Any overflow in calculating offset_factor won't change
|
/* Any overflow in calculating offset_factor won't change
|
the alignment. */
|
the alignment. */
|
unsigned offset_factor
|
unsigned offset_factor
|
= ((unsigned) tree_low_cst (TREE_OPERAND (offset, 1), 1)
|
= ((unsigned) tree_low_cst (TREE_OPERAND (offset, 1), 1)
|
* BITS_PER_UNIT);
|
* BITS_PER_UNIT);
|
|
|
if (offset_factor)
|
if (offset_factor)
|
inner = MIN (inner, (offset_factor & -offset_factor));
|
inner = MIN (inner, (offset_factor & -offset_factor));
|
}
|
}
|
else if (offset)
|
else if (offset)
|
inner = MIN (inner, BITS_PER_UNIT);
|
inner = MIN (inner, BITS_PER_UNIT);
|
}
|
}
|
if (TREE_CODE (exp) == FUNCTION_DECL)
|
if (TREE_CODE (exp) == FUNCTION_DECL)
|
align = FUNCTION_BOUNDARY;
|
align = FUNCTION_BOUNDARY;
|
else if (DECL_P (exp))
|
else if (DECL_P (exp))
|
align = MIN (inner, DECL_ALIGN (exp));
|
align = MIN (inner, DECL_ALIGN (exp));
|
#ifdef CONSTANT_ALIGNMENT
|
#ifdef CONSTANT_ALIGNMENT
|
else if (CONSTANT_CLASS_P (exp))
|
else if (CONSTANT_CLASS_P (exp))
|
align = MIN (inner, (unsigned)CONSTANT_ALIGNMENT (exp, align));
|
align = MIN (inner, (unsigned)CONSTANT_ALIGNMENT (exp, align));
|
#endif
|
#endif
|
else if (TREE_CODE (exp) == VIEW_CONVERT_EXPR
|
else if (TREE_CODE (exp) == VIEW_CONVERT_EXPR
|
|| TREE_CODE (exp) == INDIRECT_REF)
|
|| TREE_CODE (exp) == INDIRECT_REF)
|
align = MIN (TYPE_ALIGN (TREE_TYPE (exp)), inner);
|
align = MIN (TYPE_ALIGN (TREE_TYPE (exp)), inner);
|
else
|
else
|
align = MIN (align, inner);
|
align = MIN (align, inner);
|
return MIN (align, max_align);
|
return MIN (align, max_align);
|
|
|
default:
|
default:
|
return align;
|
return align;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Compute the length of a C string. TREE_STRING_LENGTH is not the right
|
/* Compute the length of a C string. TREE_STRING_LENGTH is not the right
|
way, because it could contain a zero byte in the middle.
|
way, because it could contain a zero byte in the middle.
|
TREE_STRING_LENGTH is the size of the character array, not the string.
|
TREE_STRING_LENGTH is the size of the character array, not the string.
|
|
|
ONLY_VALUE should be nonzero if the result is not going to be emitted
|
ONLY_VALUE should be nonzero if the result is not going to be emitted
|
into the instruction stream and zero if it is going to be expanded.
|
into the instruction stream and zero if it is going to be expanded.
|
E.g. with i++ ? "foo" : "bar", if ONLY_VALUE is nonzero, constant 3
|
E.g. with i++ ? "foo" : "bar", if ONLY_VALUE is nonzero, constant 3
|
is returned, otherwise NULL, since
|
is returned, otherwise NULL, since
|
len = c_strlen (src, 1); if (len) expand_expr (len, ...); would not
|
len = c_strlen (src, 1); if (len) expand_expr (len, ...); would not
|
evaluate the side-effects.
|
evaluate the side-effects.
|
|
|
The value returned is of type `ssizetype'.
|
The value returned is of type `ssizetype'.
|
|
|
Unfortunately, string_constant can't access the values of const char
|
Unfortunately, string_constant can't access the values of const char
|
arrays with initializers, so neither can we do so here. */
|
arrays with initializers, so neither can we do so here. */
|
|
|
tree
|
tree
|
c_strlen (tree src, int only_value)
|
c_strlen (tree src, int only_value)
|
{
|
{
|
tree offset_node;
|
tree offset_node;
|
HOST_WIDE_INT offset;
|
HOST_WIDE_INT offset;
|
int max;
|
int max;
|
const char *ptr;
|
const char *ptr;
|
|
|
STRIP_NOPS (src);
|
STRIP_NOPS (src);
|
if (TREE_CODE (src) == COND_EXPR
|
if (TREE_CODE (src) == COND_EXPR
|
&& (only_value || !TREE_SIDE_EFFECTS (TREE_OPERAND (src, 0))))
|
&& (only_value || !TREE_SIDE_EFFECTS (TREE_OPERAND (src, 0))))
|
{
|
{
|
tree len1, len2;
|
tree len1, len2;
|
|
|
len1 = c_strlen (TREE_OPERAND (src, 1), only_value);
|
len1 = c_strlen (TREE_OPERAND (src, 1), only_value);
|
len2 = c_strlen (TREE_OPERAND (src, 2), only_value);
|
len2 = c_strlen (TREE_OPERAND (src, 2), only_value);
|
if (tree_int_cst_equal (len1, len2))
|
if (tree_int_cst_equal (len1, len2))
|
return len1;
|
return len1;
|
}
|
}
|
|
|
if (TREE_CODE (src) == COMPOUND_EXPR
|
if (TREE_CODE (src) == COMPOUND_EXPR
|
&& (only_value || !TREE_SIDE_EFFECTS (TREE_OPERAND (src, 0))))
|
&& (only_value || !TREE_SIDE_EFFECTS (TREE_OPERAND (src, 0))))
|
return c_strlen (TREE_OPERAND (src, 1), only_value);
|
return c_strlen (TREE_OPERAND (src, 1), only_value);
|
|
|
src = string_constant (src, &offset_node);
|
src = string_constant (src, &offset_node);
|
if (src == 0)
|
if (src == 0)
|
return 0;
|
return 0;
|
|
|
max = TREE_STRING_LENGTH (src) - 1;
|
max = TREE_STRING_LENGTH (src) - 1;
|
ptr = TREE_STRING_POINTER (src);
|
ptr = TREE_STRING_POINTER (src);
|
|
|
if (offset_node && TREE_CODE (offset_node) != INTEGER_CST)
|
if (offset_node && TREE_CODE (offset_node) != INTEGER_CST)
|
{
|
{
|
/* If the string has an internal zero byte (e.g., "foo\0bar"), we can't
|
/* If the string has an internal zero byte (e.g., "foo\0bar"), we can't
|
compute the offset to the following null if we don't know where to
|
compute the offset to the following null if we don't know where to
|
start searching for it. */
|
start searching for it. */
|
int i;
|
int i;
|
|
|
for (i = 0; i < max; i++)
|
for (i = 0; i < max; i++)
|
if (ptr[i] == 0)
|
if (ptr[i] == 0)
|
return 0;
|
return 0;
|
|
|
/* We don't know the starting offset, but we do know that the string
|
/* We don't know the starting offset, but we do know that the string
|
has no internal zero bytes. We can assume that the offset falls
|
has no internal zero bytes. We can assume that the offset falls
|
within the bounds of the string; otherwise, the programmer deserves
|
within the bounds of the string; otherwise, the programmer deserves
|
what he gets. Subtract the offset from the length of the string,
|
what he gets. Subtract the offset from the length of the string,
|
and return that. This would perhaps not be valid if we were dealing
|
and return that. This would perhaps not be valid if we were dealing
|
with named arrays in addition to literal string constants. */
|
with named arrays in addition to literal string constants. */
|
|
|
return size_diffop (size_int (max), offset_node);
|
return size_diffop (size_int (max), offset_node);
|
}
|
}
|
|
|
/* We have a known offset into the string. Start searching there for
|
/* We have a known offset into the string. Start searching there for
|
a null character if we can represent it as a single HOST_WIDE_INT. */
|
a null character if we can represent it as a single HOST_WIDE_INT. */
|
if (offset_node == 0)
|
if (offset_node == 0)
|
offset = 0;
|
offset = 0;
|
else if (! host_integerp (offset_node, 0))
|
else if (! host_integerp (offset_node, 0))
|
offset = -1;
|
offset = -1;
|
else
|
else
|
offset = tree_low_cst (offset_node, 0);
|
offset = tree_low_cst (offset_node, 0);
|
|
|
/* If the offset is known to be out of bounds, warn, and call strlen at
|
/* If the offset is known to be out of bounds, warn, and call strlen at
|
runtime. */
|
runtime. */
|
if (offset < 0 || offset > max)
|
if (offset < 0 || offset > max)
|
{
|
{
|
warning (0, "offset outside bounds of constant string");
|
warning (0, "offset outside bounds of constant string");
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Use strlen to search for the first zero byte. Since any strings
|
/* Use strlen to search for the first zero byte. Since any strings
|
constructed with build_string will have nulls appended, we win even
|
constructed with build_string will have nulls appended, we win even
|
if we get handed something like (char[4])"abcd".
|
if we get handed something like (char[4])"abcd".
|
|
|
Since OFFSET is our starting index into the string, no further
|
Since OFFSET is our starting index into the string, no further
|
calculation is needed. */
|
calculation is needed. */
|
return ssize_int (strlen (ptr + offset));
|
return ssize_int (strlen (ptr + offset));
|
}
|
}
|
|
|
/* Return a char pointer for a C string if it is a string constant
|
/* Return a char pointer for a C string if it is a string constant
|
or sum of string constant and integer constant. */
|
or sum of string constant and integer constant. */
|
|
|
static const char *
|
static const char *
|
c_getstr (tree src)
|
c_getstr (tree src)
|
{
|
{
|
tree offset_node;
|
tree offset_node;
|
|
|
src = string_constant (src, &offset_node);
|
src = string_constant (src, &offset_node);
|
if (src == 0)
|
if (src == 0)
|
return 0;
|
return 0;
|
|
|
if (offset_node == 0)
|
if (offset_node == 0)
|
return TREE_STRING_POINTER (src);
|
return TREE_STRING_POINTER (src);
|
else if (!host_integerp (offset_node, 1)
|
else if (!host_integerp (offset_node, 1)
|
|| compare_tree_int (offset_node, TREE_STRING_LENGTH (src) - 1) > 0)
|
|| compare_tree_int (offset_node, TREE_STRING_LENGTH (src) - 1) > 0)
|
return 0;
|
return 0;
|
|
|
return TREE_STRING_POINTER (src) + tree_low_cst (offset_node, 1);
|
return TREE_STRING_POINTER (src) + tree_low_cst (offset_node, 1);
|
}
|
}
|
|
|
/* Return a CONST_INT or CONST_DOUBLE corresponding to target reading
|
/* Return a CONST_INT or CONST_DOUBLE corresponding to target reading
|
GET_MODE_BITSIZE (MODE) bits from string constant STR. */
|
GET_MODE_BITSIZE (MODE) bits from string constant STR. */
|
|
|
static rtx
|
static rtx
|
c_readstr (const char *str, enum machine_mode mode)
|
c_readstr (const char *str, enum machine_mode mode)
|
{
|
{
|
HOST_WIDE_INT c[2];
|
HOST_WIDE_INT c[2];
|
HOST_WIDE_INT ch;
|
HOST_WIDE_INT ch;
|
unsigned int i, j;
|
unsigned int i, j;
|
|
|
gcc_assert (GET_MODE_CLASS (mode) == MODE_INT);
|
gcc_assert (GET_MODE_CLASS (mode) == MODE_INT);
|
|
|
c[0] = 0;
|
c[0] = 0;
|
c[1] = 0;
|
c[1] = 0;
|
ch = 1;
|
ch = 1;
|
for (i = 0; i < GET_MODE_SIZE (mode); i++)
|
for (i = 0; i < GET_MODE_SIZE (mode); i++)
|
{
|
{
|
j = i;
|
j = i;
|
if (WORDS_BIG_ENDIAN)
|
if (WORDS_BIG_ENDIAN)
|
j = GET_MODE_SIZE (mode) - i - 1;
|
j = GET_MODE_SIZE (mode) - i - 1;
|
if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN
|
if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN
|
&& GET_MODE_SIZE (mode) > UNITS_PER_WORD)
|
&& GET_MODE_SIZE (mode) > UNITS_PER_WORD)
|
j = j + UNITS_PER_WORD - 2 * (j % UNITS_PER_WORD) - 1;
|
j = j + UNITS_PER_WORD - 2 * (j % UNITS_PER_WORD) - 1;
|
j *= BITS_PER_UNIT;
|
j *= BITS_PER_UNIT;
|
gcc_assert (j <= 2 * HOST_BITS_PER_WIDE_INT);
|
gcc_assert (j <= 2 * HOST_BITS_PER_WIDE_INT);
|
|
|
if (ch)
|
if (ch)
|
ch = (unsigned char) str[i];
|
ch = (unsigned char) str[i];
|
c[j / HOST_BITS_PER_WIDE_INT] |= ch << (j % HOST_BITS_PER_WIDE_INT);
|
c[j / HOST_BITS_PER_WIDE_INT] |= ch << (j % HOST_BITS_PER_WIDE_INT);
|
}
|
}
|
return immed_double_const (c[0], c[1], mode);
|
return immed_double_const (c[0], c[1], mode);
|
}
|
}
|
|
|
/* Cast a target constant CST to target CHAR and if that value fits into
|
/* Cast a target constant CST to target CHAR and if that value fits into
|
host char type, return zero and put that value into variable pointed to by
|
host char type, return zero and put that value into variable pointed to by
|
P. */
|
P. */
|
|
|
static int
|
static int
|
target_char_cast (tree cst, char *p)
|
target_char_cast (tree cst, char *p)
|
{
|
{
|
unsigned HOST_WIDE_INT val, hostval;
|
unsigned HOST_WIDE_INT val, hostval;
|
|
|
if (!host_integerp (cst, 1)
|
if (!host_integerp (cst, 1)
|
|| CHAR_TYPE_SIZE > HOST_BITS_PER_WIDE_INT)
|
|| CHAR_TYPE_SIZE > HOST_BITS_PER_WIDE_INT)
|
return 1;
|
return 1;
|
|
|
val = tree_low_cst (cst, 1);
|
val = tree_low_cst (cst, 1);
|
if (CHAR_TYPE_SIZE < HOST_BITS_PER_WIDE_INT)
|
if (CHAR_TYPE_SIZE < HOST_BITS_PER_WIDE_INT)
|
val &= (((unsigned HOST_WIDE_INT) 1) << CHAR_TYPE_SIZE) - 1;
|
val &= (((unsigned HOST_WIDE_INT) 1) << CHAR_TYPE_SIZE) - 1;
|
|
|
hostval = val;
|
hostval = val;
|
if (HOST_BITS_PER_CHAR < HOST_BITS_PER_WIDE_INT)
|
if (HOST_BITS_PER_CHAR < HOST_BITS_PER_WIDE_INT)
|
hostval &= (((unsigned HOST_WIDE_INT) 1) << HOST_BITS_PER_CHAR) - 1;
|
hostval &= (((unsigned HOST_WIDE_INT) 1) << HOST_BITS_PER_CHAR) - 1;
|
|
|
if (val != hostval)
|
if (val != hostval)
|
return 1;
|
return 1;
|
|
|
*p = hostval;
|
*p = hostval;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Similar to save_expr, but assumes that arbitrary code is not executed
|
/* Similar to save_expr, but assumes that arbitrary code is not executed
|
in between the multiple evaluations. In particular, we assume that a
|
in between the multiple evaluations. In particular, we assume that a
|
non-addressable local variable will not be modified. */
|
non-addressable local variable will not be modified. */
|
|
|
static tree
|
static tree
|
builtin_save_expr (tree exp)
|
builtin_save_expr (tree exp)
|
{
|
{
|
if (TREE_ADDRESSABLE (exp) == 0
|
if (TREE_ADDRESSABLE (exp) == 0
|
&& (TREE_CODE (exp) == PARM_DECL
|
&& (TREE_CODE (exp) == PARM_DECL
|
|| (TREE_CODE (exp) == VAR_DECL && !TREE_STATIC (exp))))
|
|| (TREE_CODE (exp) == VAR_DECL && !TREE_STATIC (exp))))
|
return exp;
|
return exp;
|
|
|
return save_expr (exp);
|
return save_expr (exp);
|
}
|
}
|
|
|
/* Given TEM, a pointer to a stack frame, follow the dynamic chain COUNT
|
/* Given TEM, a pointer to a stack frame, follow the dynamic chain COUNT
|
times to get the address of either a higher stack frame, or a return
|
times to get the address of either a higher stack frame, or a return
|
address located within it (depending on FNDECL_CODE). */
|
address located within it (depending on FNDECL_CODE). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_return_addr (enum built_in_function fndecl_code, int count)
|
expand_builtin_return_addr (enum built_in_function fndecl_code, int count)
|
{
|
{
|
int i;
|
int i;
|
|
|
#ifdef INITIAL_FRAME_ADDRESS_RTX
|
#ifdef INITIAL_FRAME_ADDRESS_RTX
|
rtx tem = INITIAL_FRAME_ADDRESS_RTX;
|
rtx tem = INITIAL_FRAME_ADDRESS_RTX;
|
#else
|
#else
|
rtx tem;
|
rtx tem;
|
|
|
/* For a zero count with __builtin_return_address, we don't care what
|
/* For a zero count with __builtin_return_address, we don't care what
|
frame address we return, because target-specific definitions will
|
frame address we return, because target-specific definitions will
|
override us. Therefore frame pointer elimination is OK, and using
|
override us. Therefore frame pointer elimination is OK, and using
|
the soft frame pointer is OK.
|
the soft frame pointer is OK.
|
|
|
For a non-zero count, or a zero count with __builtin_frame_address,
|
For a non-zero count, or a zero count with __builtin_frame_address,
|
we require a stable offset from the current frame pointer to the
|
we require a stable offset from the current frame pointer to the
|
previous one, so we must use the hard frame pointer, and
|
previous one, so we must use the hard frame pointer, and
|
we must disable frame pointer elimination. */
|
we must disable frame pointer elimination. */
|
if (count == 0 && fndecl_code == BUILT_IN_RETURN_ADDRESS)
|
if (count == 0 && fndecl_code == BUILT_IN_RETURN_ADDRESS)
|
tem = frame_pointer_rtx;
|
tem = frame_pointer_rtx;
|
else
|
else
|
{
|
{
|
tem = hard_frame_pointer_rtx;
|
tem = hard_frame_pointer_rtx;
|
|
|
/* Tell reload not to eliminate the frame pointer. */
|
/* Tell reload not to eliminate the frame pointer. */
|
current_function_accesses_prior_frames = 1;
|
current_function_accesses_prior_frames = 1;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Some machines need special handling before we can access
|
/* Some machines need special handling before we can access
|
arbitrary frames. For example, on the SPARC, we must first flush
|
arbitrary frames. For example, on the SPARC, we must first flush
|
all register windows to the stack. */
|
all register windows to the stack. */
|
#ifdef SETUP_FRAME_ADDRESSES
|
#ifdef SETUP_FRAME_ADDRESSES
|
if (count > 0)
|
if (count > 0)
|
SETUP_FRAME_ADDRESSES ();
|
SETUP_FRAME_ADDRESSES ();
|
#endif
|
#endif
|
|
|
/* On the SPARC, the return address is not in the frame, it is in a
|
/* On the SPARC, the return address is not in the frame, it is in a
|
register. There is no way to access it off of the current frame
|
register. There is no way to access it off of the current frame
|
pointer, but it can be accessed off the previous frame pointer by
|
pointer, but it can be accessed off the previous frame pointer by
|
reading the value from the register window save area. */
|
reading the value from the register window save area. */
|
#ifdef RETURN_ADDR_IN_PREVIOUS_FRAME
|
#ifdef RETURN_ADDR_IN_PREVIOUS_FRAME
|
if (fndecl_code == BUILT_IN_RETURN_ADDRESS)
|
if (fndecl_code == BUILT_IN_RETURN_ADDRESS)
|
count--;
|
count--;
|
#endif
|
#endif
|
|
|
/* Scan back COUNT frames to the specified frame. */
|
/* Scan back COUNT frames to the specified frame. */
|
for (i = 0; i < count; i++)
|
for (i = 0; i < count; i++)
|
{
|
{
|
/* Assume the dynamic chain pointer is in the word that the
|
/* Assume the dynamic chain pointer is in the word that the
|
frame address points to, unless otherwise specified. */
|
frame address points to, unless otherwise specified. */
|
#ifdef DYNAMIC_CHAIN_ADDRESS
|
#ifdef DYNAMIC_CHAIN_ADDRESS
|
tem = DYNAMIC_CHAIN_ADDRESS (tem);
|
tem = DYNAMIC_CHAIN_ADDRESS (tem);
|
#endif
|
#endif
|
tem = memory_address (Pmode, tem);
|
tem = memory_address (Pmode, tem);
|
tem = gen_frame_mem (Pmode, tem);
|
tem = gen_frame_mem (Pmode, tem);
|
tem = copy_to_reg (tem);
|
tem = copy_to_reg (tem);
|
}
|
}
|
|
|
/* For __builtin_frame_address, return what we've got. But, on
|
/* For __builtin_frame_address, return what we've got. But, on
|
the SPARC for example, we may have to add a bias. */
|
the SPARC for example, we may have to add a bias. */
|
if (fndecl_code == BUILT_IN_FRAME_ADDRESS)
|
if (fndecl_code == BUILT_IN_FRAME_ADDRESS)
|
#ifdef FRAME_ADDR_RTX
|
#ifdef FRAME_ADDR_RTX
|
return FRAME_ADDR_RTX (tem);
|
return FRAME_ADDR_RTX (tem);
|
#else
|
#else
|
return tem;
|
return tem;
|
#endif
|
#endif
|
|
|
/* For __builtin_return_address, get the return address from that frame. */
|
/* For __builtin_return_address, get the return address from that frame. */
|
#ifdef RETURN_ADDR_RTX
|
#ifdef RETURN_ADDR_RTX
|
tem = RETURN_ADDR_RTX (count, tem);
|
tem = RETURN_ADDR_RTX (count, tem);
|
#else
|
#else
|
tem = memory_address (Pmode,
|
tem = memory_address (Pmode,
|
plus_constant (tem, GET_MODE_SIZE (Pmode)));
|
plus_constant (tem, GET_MODE_SIZE (Pmode)));
|
tem = gen_frame_mem (Pmode, tem);
|
tem = gen_frame_mem (Pmode, tem);
|
#endif
|
#endif
|
return tem;
|
return tem;
|
}
|
}
|
|
|
/* Alias set used for setjmp buffer. */
|
/* Alias set used for setjmp buffer. */
|
static HOST_WIDE_INT setjmp_alias_set = -1;
|
static HOST_WIDE_INT setjmp_alias_set = -1;
|
|
|
/* Construct the leading half of a __builtin_setjmp call. Control will
|
/* Construct the leading half of a __builtin_setjmp call. Control will
|
return to RECEIVER_LABEL. This is also called directly by the SJLJ
|
return to RECEIVER_LABEL. This is also called directly by the SJLJ
|
exception handling code. */
|
exception handling code. */
|
|
|
void
|
void
|
expand_builtin_setjmp_setup (rtx buf_addr, rtx receiver_label)
|
expand_builtin_setjmp_setup (rtx buf_addr, rtx receiver_label)
|
{
|
{
|
enum machine_mode sa_mode = STACK_SAVEAREA_MODE (SAVE_NONLOCAL);
|
enum machine_mode sa_mode = STACK_SAVEAREA_MODE (SAVE_NONLOCAL);
|
rtx stack_save;
|
rtx stack_save;
|
rtx mem;
|
rtx mem;
|
|
|
if (setjmp_alias_set == -1)
|
if (setjmp_alias_set == -1)
|
setjmp_alias_set = new_alias_set ();
|
setjmp_alias_set = new_alias_set ();
|
|
|
buf_addr = convert_memory_address (Pmode, buf_addr);
|
buf_addr = convert_memory_address (Pmode, buf_addr);
|
|
|
buf_addr = force_reg (Pmode, force_operand (buf_addr, NULL_RTX));
|
buf_addr = force_reg (Pmode, force_operand (buf_addr, NULL_RTX));
|
|
|
/* We store the frame pointer and the address of receiver_label in
|
/* We store the frame pointer and the address of receiver_label in
|
the buffer and use the rest of it for the stack save area, which
|
the buffer and use the rest of it for the stack save area, which
|
is machine-dependent. */
|
is machine-dependent. */
|
|
|
mem = gen_rtx_MEM (Pmode, buf_addr);
|
mem = gen_rtx_MEM (Pmode, buf_addr);
|
set_mem_alias_set (mem, setjmp_alias_set);
|
set_mem_alias_set (mem, setjmp_alias_set);
|
emit_move_insn (mem, targetm.builtin_setjmp_frame_value ());
|
emit_move_insn (mem, targetm.builtin_setjmp_frame_value ());
|
|
|
mem = gen_rtx_MEM (Pmode, plus_constant (buf_addr, GET_MODE_SIZE (Pmode))),
|
mem = gen_rtx_MEM (Pmode, plus_constant (buf_addr, GET_MODE_SIZE (Pmode))),
|
set_mem_alias_set (mem, setjmp_alias_set);
|
set_mem_alias_set (mem, setjmp_alias_set);
|
|
|
emit_move_insn (validize_mem (mem),
|
emit_move_insn (validize_mem (mem),
|
force_reg (Pmode, gen_rtx_LABEL_REF (Pmode, receiver_label)));
|
force_reg (Pmode, gen_rtx_LABEL_REF (Pmode, receiver_label)));
|
|
|
stack_save = gen_rtx_MEM (sa_mode,
|
stack_save = gen_rtx_MEM (sa_mode,
|
plus_constant (buf_addr,
|
plus_constant (buf_addr,
|
2 * GET_MODE_SIZE (Pmode)));
|
2 * GET_MODE_SIZE (Pmode)));
|
set_mem_alias_set (stack_save, setjmp_alias_set);
|
set_mem_alias_set (stack_save, setjmp_alias_set);
|
emit_stack_save (SAVE_NONLOCAL, &stack_save, NULL_RTX);
|
emit_stack_save (SAVE_NONLOCAL, &stack_save, NULL_RTX);
|
|
|
/* If there is further processing to do, do it. */
|
/* If there is further processing to do, do it. */
|
#ifdef HAVE_builtin_setjmp_setup
|
#ifdef HAVE_builtin_setjmp_setup
|
if (HAVE_builtin_setjmp_setup)
|
if (HAVE_builtin_setjmp_setup)
|
emit_insn (gen_builtin_setjmp_setup (buf_addr));
|
emit_insn (gen_builtin_setjmp_setup (buf_addr));
|
#endif
|
#endif
|
|
|
/* Tell optimize_save_area_alloca that extra work is going to
|
/* Tell optimize_save_area_alloca that extra work is going to
|
need to go on during alloca. */
|
need to go on during alloca. */
|
current_function_calls_setjmp = 1;
|
current_function_calls_setjmp = 1;
|
|
|
/* Set this so all the registers get saved in our frame; we need to be
|
/* Set this so all the registers get saved in our frame; we need to be
|
able to copy the saved values for any registers from frames we unwind. */
|
able to copy the saved values for any registers from frames we unwind. */
|
current_function_has_nonlocal_label = 1;
|
current_function_has_nonlocal_label = 1;
|
}
|
}
|
|
|
/* Construct the trailing part of a __builtin_setjmp call. This is
|
/* Construct the trailing part of a __builtin_setjmp call. This is
|
also called directly by the SJLJ exception handling code. */
|
also called directly by the SJLJ exception handling code. */
|
|
|
void
|
void
|
expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED)
|
expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED)
|
{
|
{
|
/* Clobber the FP when we get here, so we have to make sure it's
|
/* Clobber the FP when we get here, so we have to make sure it's
|
marked as used by this function. */
|
marked as used by this function. */
|
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
|
|
|
/* Mark the static chain as clobbered here so life information
|
/* Mark the static chain as clobbered here so life information
|
doesn't get messed up for it. */
|
doesn't get messed up for it. */
|
emit_insn (gen_rtx_CLOBBER (VOIDmode, static_chain_rtx));
|
emit_insn (gen_rtx_CLOBBER (VOIDmode, static_chain_rtx));
|
|
|
/* Now put in the code to restore the frame pointer, and argument
|
/* Now put in the code to restore the frame pointer, and argument
|
pointer, if needed. */
|
pointer, if needed. */
|
#ifdef HAVE_nonlocal_goto
|
#ifdef HAVE_nonlocal_goto
|
if (! HAVE_nonlocal_goto)
|
if (! HAVE_nonlocal_goto)
|
#endif
|
#endif
|
{
|
{
|
emit_move_insn (virtual_stack_vars_rtx, hard_frame_pointer_rtx);
|
emit_move_insn (virtual_stack_vars_rtx, hard_frame_pointer_rtx);
|
/* This might change the hard frame pointer in ways that aren't
|
/* This might change the hard frame pointer in ways that aren't
|
apparent to early optimization passes, so force a clobber. */
|
apparent to early optimization passes, so force a clobber. */
|
emit_insn (gen_rtx_CLOBBER (VOIDmode, hard_frame_pointer_rtx));
|
emit_insn (gen_rtx_CLOBBER (VOIDmode, hard_frame_pointer_rtx));
|
}
|
}
|
|
|
#if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
|
#if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
|
if (fixed_regs[ARG_POINTER_REGNUM])
|
if (fixed_regs[ARG_POINTER_REGNUM])
|
{
|
{
|
#ifdef ELIMINABLE_REGS
|
#ifdef ELIMINABLE_REGS
|
size_t i;
|
size_t i;
|
static const struct elims {const int from, to;} elim_regs[] = ELIMINABLE_REGS;
|
static const struct elims {const int from, to;} elim_regs[] = ELIMINABLE_REGS;
|
|
|
for (i = 0; i < ARRAY_SIZE (elim_regs); i++)
|
for (i = 0; i < ARRAY_SIZE (elim_regs); i++)
|
if (elim_regs[i].from == ARG_POINTER_REGNUM
|
if (elim_regs[i].from == ARG_POINTER_REGNUM
|
&& elim_regs[i].to == HARD_FRAME_POINTER_REGNUM)
|
&& elim_regs[i].to == HARD_FRAME_POINTER_REGNUM)
|
break;
|
break;
|
|
|
if (i == ARRAY_SIZE (elim_regs))
|
if (i == ARRAY_SIZE (elim_regs))
|
#endif
|
#endif
|
{
|
{
|
/* Now restore our arg pointer from the address at which it
|
/* Now restore our arg pointer from the address at which it
|
was saved in our stack frame. */
|
was saved in our stack frame. */
|
emit_move_insn (virtual_incoming_args_rtx,
|
emit_move_insn (virtual_incoming_args_rtx,
|
copy_to_reg (get_arg_pointer_save_area (cfun)));
|
copy_to_reg (get_arg_pointer_save_area (cfun)));
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
|
|
#ifdef HAVE_builtin_setjmp_receiver
|
#ifdef HAVE_builtin_setjmp_receiver
|
if (HAVE_builtin_setjmp_receiver)
|
if (HAVE_builtin_setjmp_receiver)
|
emit_insn (gen_builtin_setjmp_receiver (receiver_label));
|
emit_insn (gen_builtin_setjmp_receiver (receiver_label));
|
else
|
else
|
#endif
|
#endif
|
#ifdef HAVE_nonlocal_goto_receiver
|
#ifdef HAVE_nonlocal_goto_receiver
|
if (HAVE_nonlocal_goto_receiver)
|
if (HAVE_nonlocal_goto_receiver)
|
emit_insn (gen_nonlocal_goto_receiver ());
|
emit_insn (gen_nonlocal_goto_receiver ());
|
else
|
else
|
#endif
|
#endif
|
{ /* Nothing */ }
|
{ /* Nothing */ }
|
|
|
/* @@@ This is a kludge. Not all machine descriptions define a blockage
|
/* @@@ This is a kludge. Not all machine descriptions define a blockage
|
insn, but we must not allow the code we just generated to be reordered
|
insn, but we must not allow the code we just generated to be reordered
|
by scheduling. Specifically, the update of the frame pointer must
|
by scheduling. Specifically, the update of the frame pointer must
|
happen immediately, not later. So emit an ASM_INPUT to act as blockage
|
happen immediately, not later. So emit an ASM_INPUT to act as blockage
|
insn. */
|
insn. */
|
emit_insn (gen_rtx_ASM_INPUT (VOIDmode, ""));
|
emit_insn (gen_rtx_ASM_INPUT (VOIDmode, ""));
|
}
|
}
|
|
|
/* __builtin_longjmp is passed a pointer to an array of five words (not
|
/* __builtin_longjmp is passed a pointer to an array of five words (not
|
all will be used on all machines). It operates similarly to the C
|
all will be used on all machines). It operates similarly to the C
|
library function of the same name, but is more efficient. Much of
|
library function of the same name, but is more efficient. Much of
|
the code below is copied from the handling of non-local gotos. */
|
the code below is copied from the handling of non-local gotos. */
|
|
|
static void
|
static void
|
expand_builtin_longjmp (rtx buf_addr, rtx value)
|
expand_builtin_longjmp (rtx buf_addr, rtx value)
|
{
|
{
|
rtx fp, lab, stack, insn, last;
|
rtx fp, lab, stack, insn, last;
|
enum machine_mode sa_mode = STACK_SAVEAREA_MODE (SAVE_NONLOCAL);
|
enum machine_mode sa_mode = STACK_SAVEAREA_MODE (SAVE_NONLOCAL);
|
|
|
if (setjmp_alias_set == -1)
|
if (setjmp_alias_set == -1)
|
setjmp_alias_set = new_alias_set ();
|
setjmp_alias_set = new_alias_set ();
|
|
|
buf_addr = convert_memory_address (Pmode, buf_addr);
|
buf_addr = convert_memory_address (Pmode, buf_addr);
|
|
|
buf_addr = force_reg (Pmode, buf_addr);
|
buf_addr = force_reg (Pmode, buf_addr);
|
|
|
/* We used to store value in static_chain_rtx, but that fails if pointers
|
/* We used to store value in static_chain_rtx, but that fails if pointers
|
are smaller than integers. We instead require that the user must pass
|
are smaller than integers. We instead require that the user must pass
|
a second argument of 1, because that is what builtin_setjmp will
|
a second argument of 1, because that is what builtin_setjmp will
|
return. This also makes EH slightly more efficient, since we are no
|
return. This also makes EH slightly more efficient, since we are no
|
longer copying around a value that we don't care about. */
|
longer copying around a value that we don't care about. */
|
gcc_assert (value == const1_rtx);
|
gcc_assert (value == const1_rtx);
|
|
|
last = get_last_insn ();
|
last = get_last_insn ();
|
#ifdef HAVE_builtin_longjmp
|
#ifdef HAVE_builtin_longjmp
|
if (HAVE_builtin_longjmp)
|
if (HAVE_builtin_longjmp)
|
emit_insn (gen_builtin_longjmp (buf_addr));
|
emit_insn (gen_builtin_longjmp (buf_addr));
|
else
|
else
|
#endif
|
#endif
|
{
|
{
|
fp = gen_rtx_MEM (Pmode, buf_addr);
|
fp = gen_rtx_MEM (Pmode, buf_addr);
|
lab = gen_rtx_MEM (Pmode, plus_constant (buf_addr,
|
lab = gen_rtx_MEM (Pmode, plus_constant (buf_addr,
|
GET_MODE_SIZE (Pmode)));
|
GET_MODE_SIZE (Pmode)));
|
|
|
stack = gen_rtx_MEM (sa_mode, plus_constant (buf_addr,
|
stack = gen_rtx_MEM (sa_mode, plus_constant (buf_addr,
|
2 * GET_MODE_SIZE (Pmode)));
|
2 * GET_MODE_SIZE (Pmode)));
|
set_mem_alias_set (fp, setjmp_alias_set);
|
set_mem_alias_set (fp, setjmp_alias_set);
|
set_mem_alias_set (lab, setjmp_alias_set);
|
set_mem_alias_set (lab, setjmp_alias_set);
|
set_mem_alias_set (stack, setjmp_alias_set);
|
set_mem_alias_set (stack, setjmp_alias_set);
|
|
|
/* Pick up FP, label, and SP from the block and jump. This code is
|
/* Pick up FP, label, and SP from the block and jump. This code is
|
from expand_goto in stmt.c; see there for detailed comments. */
|
from expand_goto in stmt.c; see there for detailed comments. */
|
#ifdef HAVE_nonlocal_goto
|
#ifdef HAVE_nonlocal_goto
|
if (HAVE_nonlocal_goto)
|
if (HAVE_nonlocal_goto)
|
/* We have to pass a value to the nonlocal_goto pattern that will
|
/* We have to pass a value to the nonlocal_goto pattern that will
|
get copied into the static_chain pointer, but it does not matter
|
get copied into the static_chain pointer, but it does not matter
|
what that value is, because builtin_setjmp does not use it. */
|
what that value is, because builtin_setjmp does not use it. */
|
emit_insn (gen_nonlocal_goto (value, lab, stack, fp));
|
emit_insn (gen_nonlocal_goto (value, lab, stack, fp));
|
else
|
else
|
#endif
|
#endif
|
{
|
{
|
lab = copy_to_reg (lab);
|
lab = copy_to_reg (lab);
|
|
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
gen_rtx_MEM (BLKmode,
|
gen_rtx_MEM (BLKmode,
|
gen_rtx_SCRATCH (VOIDmode))));
|
gen_rtx_SCRATCH (VOIDmode))));
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
gen_rtx_MEM (BLKmode,
|
gen_rtx_MEM (BLKmode,
|
hard_frame_pointer_rtx)));
|
hard_frame_pointer_rtx)));
|
|
|
emit_move_insn (hard_frame_pointer_rtx, fp);
|
emit_move_insn (hard_frame_pointer_rtx, fp);
|
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
|
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
|
|
|
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
|
emit_indirect_jump (lab);
|
emit_indirect_jump (lab);
|
}
|
}
|
}
|
}
|
|
|
/* Search backwards and mark the jump insn as a non-local goto.
|
/* Search backwards and mark the jump insn as a non-local goto.
|
Note that this precludes the use of __builtin_longjmp to a
|
Note that this precludes the use of __builtin_longjmp to a
|
__builtin_setjmp target in the same function. However, we've
|
__builtin_setjmp target in the same function. However, we've
|
already cautioned the user that these functions are for
|
already cautioned the user that these functions are for
|
internal exception handling use only. */
|
internal exception handling use only. */
|
for (insn = get_last_insn (); insn; insn = PREV_INSN (insn))
|
for (insn = get_last_insn (); insn; insn = PREV_INSN (insn))
|
{
|
{
|
gcc_assert (insn != last);
|
gcc_assert (insn != last);
|
|
|
if (JUMP_P (insn))
|
if (JUMP_P (insn))
|
{
|
{
|
REG_NOTES (insn) = alloc_EXPR_LIST (REG_NON_LOCAL_GOTO, const0_rtx,
|
REG_NOTES (insn) = alloc_EXPR_LIST (REG_NON_LOCAL_GOTO, const0_rtx,
|
REG_NOTES (insn));
|
REG_NOTES (insn));
|
break;
|
break;
|
}
|
}
|
else if (CALL_P (insn))
|
else if (CALL_P (insn))
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/* Expand a call to __builtin_nonlocal_goto. We're passed the target label
|
/* Expand a call to __builtin_nonlocal_goto. We're passed the target label
|
and the address of the save area. */
|
and the address of the save area. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_nonlocal_goto (tree arglist)
|
expand_builtin_nonlocal_goto (tree arglist)
|
{
|
{
|
tree t_label, t_save_area;
|
tree t_label, t_save_area;
|
rtx r_label, r_save_area, r_fp, r_sp, insn;
|
rtx r_label, r_save_area, r_fp, r_sp, insn;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
t_label = TREE_VALUE (arglist);
|
t_label = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
t_save_area = TREE_VALUE (arglist);
|
t_save_area = TREE_VALUE (arglist);
|
|
|
r_label = expand_normal (t_label);
|
r_label = expand_normal (t_label);
|
r_label = convert_memory_address (Pmode, r_label);
|
r_label = convert_memory_address (Pmode, r_label);
|
r_save_area = expand_normal (t_save_area);
|
r_save_area = expand_normal (t_save_area);
|
r_save_area = convert_memory_address (Pmode, r_save_area);
|
r_save_area = convert_memory_address (Pmode, r_save_area);
|
r_fp = gen_rtx_MEM (Pmode, r_save_area);
|
r_fp = gen_rtx_MEM (Pmode, r_save_area);
|
r_sp = gen_rtx_MEM (STACK_SAVEAREA_MODE (SAVE_NONLOCAL),
|
r_sp = gen_rtx_MEM (STACK_SAVEAREA_MODE (SAVE_NONLOCAL),
|
plus_constant (r_save_area, GET_MODE_SIZE (Pmode)));
|
plus_constant (r_save_area, GET_MODE_SIZE (Pmode)));
|
|
|
current_function_has_nonlocal_goto = 1;
|
current_function_has_nonlocal_goto = 1;
|
|
|
#ifdef HAVE_nonlocal_goto
|
#ifdef HAVE_nonlocal_goto
|
/* ??? We no longer need to pass the static chain value, afaik. */
|
/* ??? We no longer need to pass the static chain value, afaik. */
|
if (HAVE_nonlocal_goto)
|
if (HAVE_nonlocal_goto)
|
emit_insn (gen_nonlocal_goto (const0_rtx, r_label, r_sp, r_fp));
|
emit_insn (gen_nonlocal_goto (const0_rtx, r_label, r_sp, r_fp));
|
else
|
else
|
#endif
|
#endif
|
{
|
{
|
r_label = copy_to_reg (r_label);
|
r_label = copy_to_reg (r_label);
|
|
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
gen_rtx_MEM (BLKmode,
|
gen_rtx_MEM (BLKmode,
|
gen_rtx_SCRATCH (VOIDmode))));
|
gen_rtx_SCRATCH (VOIDmode))));
|
|
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
emit_insn (gen_rtx_CLOBBER (VOIDmode,
|
gen_rtx_MEM (BLKmode,
|
gen_rtx_MEM (BLKmode,
|
hard_frame_pointer_rtx)));
|
hard_frame_pointer_rtx)));
|
|
|
/* Restore frame pointer for containing function.
|
/* Restore frame pointer for containing function.
|
This sets the actual hard register used for the frame pointer
|
This sets the actual hard register used for the frame pointer
|
to the location of the function's incoming static chain info.
|
to the location of the function's incoming static chain info.
|
The non-local goto handler will then adjust it to contain the
|
The non-local goto handler will then adjust it to contain the
|
proper value and reload the argument pointer, if needed. */
|
proper value and reload the argument pointer, if needed. */
|
emit_move_insn (hard_frame_pointer_rtx, r_fp);
|
emit_move_insn (hard_frame_pointer_rtx, r_fp);
|
emit_stack_restore (SAVE_NONLOCAL, r_sp, NULL_RTX);
|
emit_stack_restore (SAVE_NONLOCAL, r_sp, NULL_RTX);
|
|
|
/* USE of hard_frame_pointer_rtx added for consistency;
|
/* USE of hard_frame_pointer_rtx added for consistency;
|
not clear if really needed. */
|
not clear if really needed. */
|
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
|
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
|
emit_indirect_jump (r_label);
|
emit_indirect_jump (r_label);
|
}
|
}
|
|
|
/* Search backwards to the jump insn and mark it as a
|
/* Search backwards to the jump insn and mark it as a
|
non-local goto. */
|
non-local goto. */
|
for (insn = get_last_insn (); insn; insn = PREV_INSN (insn))
|
for (insn = get_last_insn (); insn; insn = PREV_INSN (insn))
|
{
|
{
|
if (JUMP_P (insn))
|
if (JUMP_P (insn))
|
{
|
{
|
REG_NOTES (insn) = alloc_EXPR_LIST (REG_NON_LOCAL_GOTO,
|
REG_NOTES (insn) = alloc_EXPR_LIST (REG_NON_LOCAL_GOTO,
|
const0_rtx, REG_NOTES (insn));
|
const0_rtx, REG_NOTES (insn));
|
break;
|
break;
|
}
|
}
|
else if (CALL_P (insn))
|
else if (CALL_P (insn))
|
break;
|
break;
|
}
|
}
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* __builtin_update_setjmp_buf is passed a pointer to an array of five words
|
/* __builtin_update_setjmp_buf is passed a pointer to an array of five words
|
(not all will be used on all machines) that was passed to __builtin_setjmp.
|
(not all will be used on all machines) that was passed to __builtin_setjmp.
|
It updates the stack pointer in that block to correspond to the current
|
It updates the stack pointer in that block to correspond to the current
|
stack pointer. */
|
stack pointer. */
|
|
|
static void
|
static void
|
expand_builtin_update_setjmp_buf (rtx buf_addr)
|
expand_builtin_update_setjmp_buf (rtx buf_addr)
|
{
|
{
|
enum machine_mode sa_mode = Pmode;
|
enum machine_mode sa_mode = Pmode;
|
rtx stack_save;
|
rtx stack_save;
|
|
|
|
|
#ifdef HAVE_save_stack_nonlocal
|
#ifdef HAVE_save_stack_nonlocal
|
if (HAVE_save_stack_nonlocal)
|
if (HAVE_save_stack_nonlocal)
|
sa_mode = insn_data[(int) CODE_FOR_save_stack_nonlocal].operand[0].mode;
|
sa_mode = insn_data[(int) CODE_FOR_save_stack_nonlocal].operand[0].mode;
|
#endif
|
#endif
|
#ifdef STACK_SAVEAREA_MODE
|
#ifdef STACK_SAVEAREA_MODE
|
sa_mode = STACK_SAVEAREA_MODE (SAVE_NONLOCAL);
|
sa_mode = STACK_SAVEAREA_MODE (SAVE_NONLOCAL);
|
#endif
|
#endif
|
|
|
stack_save
|
stack_save
|
= gen_rtx_MEM (sa_mode,
|
= gen_rtx_MEM (sa_mode,
|
memory_address
|
memory_address
|
(sa_mode,
|
(sa_mode,
|
plus_constant (buf_addr, 2 * GET_MODE_SIZE (Pmode))));
|
plus_constant (buf_addr, 2 * GET_MODE_SIZE (Pmode))));
|
|
|
#ifdef HAVE_setjmp
|
#ifdef HAVE_setjmp
|
if (HAVE_setjmp)
|
if (HAVE_setjmp)
|
emit_insn (gen_setjmp ());
|
emit_insn (gen_setjmp ());
|
#endif
|
#endif
|
|
|
emit_stack_save (SAVE_NONLOCAL, &stack_save, NULL_RTX);
|
emit_stack_save (SAVE_NONLOCAL, &stack_save, NULL_RTX);
|
}
|
}
|
|
|
/* Expand a call to __builtin_prefetch. For a target that does not support
|
/* Expand a call to __builtin_prefetch. For a target that does not support
|
data prefetch, evaluate the memory address argument in case it has side
|
data prefetch, evaluate the memory address argument in case it has side
|
effects. */
|
effects. */
|
|
|
static void
|
static void
|
expand_builtin_prefetch (tree arglist)
|
expand_builtin_prefetch (tree arglist)
|
{
|
{
|
tree arg0, arg1, arg2;
|
tree arg0, arg1, arg2;
|
rtx op0, op1, op2;
|
rtx op0, op1, op2;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, 0))
|
if (!validate_arglist (arglist, POINTER_TYPE, 0))
|
return;
|
return;
|
|
|
arg0 = TREE_VALUE (arglist);
|
arg0 = TREE_VALUE (arglist);
|
/* Arguments 1 and 2 are optional; argument 1 (read/write) defaults to
|
/* Arguments 1 and 2 are optional; argument 1 (read/write) defaults to
|
zero (read) and argument 2 (locality) defaults to 3 (high degree of
|
zero (read) and argument 2 (locality) defaults to 3 (high degree of
|
locality). */
|
locality). */
|
if (TREE_CHAIN (arglist))
|
if (TREE_CHAIN (arglist))
|
{
|
{
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
if (TREE_CHAIN (TREE_CHAIN (arglist)))
|
if (TREE_CHAIN (TREE_CHAIN (arglist)))
|
arg2 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
arg2 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
else
|
else
|
arg2 = build_int_cst (NULL_TREE, 3);
|
arg2 = build_int_cst (NULL_TREE, 3);
|
}
|
}
|
else
|
else
|
{
|
{
|
arg1 = integer_zero_node;
|
arg1 = integer_zero_node;
|
arg2 = build_int_cst (NULL_TREE, 3);
|
arg2 = build_int_cst (NULL_TREE, 3);
|
}
|
}
|
|
|
/* Argument 0 is an address. */
|
/* Argument 0 is an address. */
|
op0 = expand_expr (arg0, NULL_RTX, Pmode, EXPAND_NORMAL);
|
op0 = expand_expr (arg0, NULL_RTX, Pmode, EXPAND_NORMAL);
|
|
|
/* Argument 1 (read/write flag) must be a compile-time constant int. */
|
/* Argument 1 (read/write flag) must be a compile-time constant int. */
|
if (TREE_CODE (arg1) != INTEGER_CST)
|
if (TREE_CODE (arg1) != INTEGER_CST)
|
{
|
{
|
error ("second argument to %<__builtin_prefetch%> must be a constant");
|
error ("second argument to %<__builtin_prefetch%> must be a constant");
|
arg1 = integer_zero_node;
|
arg1 = integer_zero_node;
|
}
|
}
|
op1 = expand_normal (arg1);
|
op1 = expand_normal (arg1);
|
/* Argument 1 must be either zero or one. */
|
/* Argument 1 must be either zero or one. */
|
if (INTVAL (op1) != 0 && INTVAL (op1) != 1)
|
if (INTVAL (op1) != 0 && INTVAL (op1) != 1)
|
{
|
{
|
warning (0, "invalid second argument to %<__builtin_prefetch%>;"
|
warning (0, "invalid second argument to %<__builtin_prefetch%>;"
|
" using zero");
|
" using zero");
|
op1 = const0_rtx;
|
op1 = const0_rtx;
|
}
|
}
|
|
|
/* Argument 2 (locality) must be a compile-time constant int. */
|
/* Argument 2 (locality) must be a compile-time constant int. */
|
if (TREE_CODE (arg2) != INTEGER_CST)
|
if (TREE_CODE (arg2) != INTEGER_CST)
|
{
|
{
|
error ("third argument to %<__builtin_prefetch%> must be a constant");
|
error ("third argument to %<__builtin_prefetch%> must be a constant");
|
arg2 = integer_zero_node;
|
arg2 = integer_zero_node;
|
}
|
}
|
op2 = expand_normal (arg2);
|
op2 = expand_normal (arg2);
|
/* Argument 2 must be 0, 1, 2, or 3. */
|
/* Argument 2 must be 0, 1, 2, or 3. */
|
if (INTVAL (op2) < 0 || INTVAL (op2) > 3)
|
if (INTVAL (op2) < 0 || INTVAL (op2) > 3)
|
{
|
{
|
warning (0, "invalid third argument to %<__builtin_prefetch%>; using zero");
|
warning (0, "invalid third argument to %<__builtin_prefetch%>; using zero");
|
op2 = const0_rtx;
|
op2 = const0_rtx;
|
}
|
}
|
|
|
#ifdef HAVE_prefetch
|
#ifdef HAVE_prefetch
|
if (HAVE_prefetch)
|
if (HAVE_prefetch)
|
{
|
{
|
if ((! (*insn_data[(int) CODE_FOR_prefetch].operand[0].predicate)
|
if ((! (*insn_data[(int) CODE_FOR_prefetch].operand[0].predicate)
|
(op0,
|
(op0,
|
insn_data[(int) CODE_FOR_prefetch].operand[0].mode))
|
insn_data[(int) CODE_FOR_prefetch].operand[0].mode))
|
|| (GET_MODE (op0) != Pmode))
|
|| (GET_MODE (op0) != Pmode))
|
{
|
{
|
op0 = convert_memory_address (Pmode, op0);
|
op0 = convert_memory_address (Pmode, op0);
|
op0 = force_reg (Pmode, op0);
|
op0 = force_reg (Pmode, op0);
|
}
|
}
|
emit_insn (gen_prefetch (op0, op1, op2));
|
emit_insn (gen_prefetch (op0, op1, op2));
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Don't do anything with direct references to volatile memory, but
|
/* Don't do anything with direct references to volatile memory, but
|
generate code to handle other side effects. */
|
generate code to handle other side effects. */
|
if (!MEM_P (op0) && side_effects_p (op0))
|
if (!MEM_P (op0) && side_effects_p (op0))
|
emit_insn (op0);
|
emit_insn (op0);
|
}
|
}
|
|
|
/* Get a MEM rtx for expression EXP which is the address of an operand
|
/* Get a MEM rtx for expression EXP which is the address of an operand
|
to be used in a string instruction (cmpstrsi, movmemsi, ..). LEN is
|
to be used in a string instruction (cmpstrsi, movmemsi, ..). LEN is
|
the maximum length of the block of memory that might be accessed or
|
the maximum length of the block of memory that might be accessed or
|
NULL if unknown. */
|
NULL if unknown. */
|
|
|
static rtx
|
static rtx
|
get_memory_rtx (tree exp, tree len)
|
get_memory_rtx (tree exp, tree len)
|
{
|
{
|
rtx addr = expand_expr (exp, NULL_RTX, ptr_mode, EXPAND_NORMAL);
|
rtx addr = expand_expr (exp, NULL_RTX, ptr_mode, EXPAND_NORMAL);
|
rtx mem = gen_rtx_MEM (BLKmode, memory_address (BLKmode, addr));
|
rtx mem = gen_rtx_MEM (BLKmode, memory_address (BLKmode, addr));
|
|
|
/* Get an expression we can use to find the attributes to assign to MEM.
|
/* Get an expression we can use to find the attributes to assign to MEM.
|
If it is an ADDR_EXPR, use the operand. Otherwise, dereference it if
|
If it is an ADDR_EXPR, use the operand. Otherwise, dereference it if
|
we can. First remove any nops. */
|
we can. First remove any nops. */
|
while ((TREE_CODE (exp) == NOP_EXPR || TREE_CODE (exp) == CONVERT_EXPR
|
while ((TREE_CODE (exp) == NOP_EXPR || TREE_CODE (exp) == CONVERT_EXPR
|
|| TREE_CODE (exp) == NON_LVALUE_EXPR)
|
|| TREE_CODE (exp) == NON_LVALUE_EXPR)
|
&& POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (exp, 0))))
|
&& POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (exp, 0))))
|
exp = TREE_OPERAND (exp, 0);
|
exp = TREE_OPERAND (exp, 0);
|
|
|
if (TREE_CODE (exp) == ADDR_EXPR)
|
if (TREE_CODE (exp) == ADDR_EXPR)
|
exp = TREE_OPERAND (exp, 0);
|
exp = TREE_OPERAND (exp, 0);
|
else if (POINTER_TYPE_P (TREE_TYPE (exp)))
|
else if (POINTER_TYPE_P (TREE_TYPE (exp)))
|
exp = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (exp)), exp);
|
exp = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (exp)), exp);
|
else
|
else
|
exp = NULL;
|
exp = NULL;
|
|
|
/* Honor attributes derived from exp, except for the alias set
|
/* Honor attributes derived from exp, except for the alias set
|
(as builtin stringops may alias with anything) and the size
|
(as builtin stringops may alias with anything) and the size
|
(as stringops may access multiple array elements). */
|
(as stringops may access multiple array elements). */
|
if (exp)
|
if (exp)
|
{
|
{
|
set_mem_attributes (mem, exp, 0);
|
set_mem_attributes (mem, exp, 0);
|
|
|
/* Allow the string and memory builtins to overflow from one
|
/* Allow the string and memory builtins to overflow from one
|
field into another, see http://gcc.gnu.org/PR23561.
|
field into another, see http://gcc.gnu.org/PR23561.
|
Thus avoid COMPONENT_REFs in MEM_EXPR unless we know the whole
|
Thus avoid COMPONENT_REFs in MEM_EXPR unless we know the whole
|
memory accessed by the string or memory builtin will fit
|
memory accessed by the string or memory builtin will fit
|
within the field. */
|
within the field. */
|
if (MEM_EXPR (mem) && TREE_CODE (MEM_EXPR (mem)) == COMPONENT_REF)
|
if (MEM_EXPR (mem) && TREE_CODE (MEM_EXPR (mem)) == COMPONENT_REF)
|
{
|
{
|
tree mem_expr = MEM_EXPR (mem);
|
tree mem_expr = MEM_EXPR (mem);
|
HOST_WIDE_INT offset = -1, length = -1;
|
HOST_WIDE_INT offset = -1, length = -1;
|
tree inner = exp;
|
tree inner = exp;
|
|
|
while (TREE_CODE (inner) == ARRAY_REF
|
while (TREE_CODE (inner) == ARRAY_REF
|
|| TREE_CODE (inner) == NOP_EXPR
|
|| TREE_CODE (inner) == NOP_EXPR
|
|| TREE_CODE (inner) == CONVERT_EXPR
|
|| TREE_CODE (inner) == CONVERT_EXPR
|
|| TREE_CODE (inner) == NON_LVALUE_EXPR
|
|| TREE_CODE (inner) == NON_LVALUE_EXPR
|
|| TREE_CODE (inner) == VIEW_CONVERT_EXPR
|
|| TREE_CODE (inner) == VIEW_CONVERT_EXPR
|
|| TREE_CODE (inner) == SAVE_EXPR)
|
|| TREE_CODE (inner) == SAVE_EXPR)
|
inner = TREE_OPERAND (inner, 0);
|
inner = TREE_OPERAND (inner, 0);
|
|
|
gcc_assert (TREE_CODE (inner) == COMPONENT_REF);
|
gcc_assert (TREE_CODE (inner) == COMPONENT_REF);
|
|
|
if (MEM_OFFSET (mem)
|
if (MEM_OFFSET (mem)
|
&& GET_CODE (MEM_OFFSET (mem)) == CONST_INT)
|
&& GET_CODE (MEM_OFFSET (mem)) == CONST_INT)
|
offset = INTVAL (MEM_OFFSET (mem));
|
offset = INTVAL (MEM_OFFSET (mem));
|
|
|
if (offset >= 0 && len && host_integerp (len, 0))
|
if (offset >= 0 && len && host_integerp (len, 0))
|
length = tree_low_cst (len, 0);
|
length = tree_low_cst (len, 0);
|
|
|
while (TREE_CODE (inner) == COMPONENT_REF)
|
while (TREE_CODE (inner) == COMPONENT_REF)
|
{
|
{
|
tree field = TREE_OPERAND (inner, 1);
|
tree field = TREE_OPERAND (inner, 1);
|
gcc_assert (! DECL_BIT_FIELD (field));
|
gcc_assert (! DECL_BIT_FIELD (field));
|
gcc_assert (TREE_CODE (mem_expr) == COMPONENT_REF);
|
gcc_assert (TREE_CODE (mem_expr) == COMPONENT_REF);
|
gcc_assert (field == TREE_OPERAND (mem_expr, 1));
|
gcc_assert (field == TREE_OPERAND (mem_expr, 1));
|
|
|
if (length >= 0
|
if (length >= 0
|
&& TYPE_SIZE_UNIT (TREE_TYPE (inner))
|
&& TYPE_SIZE_UNIT (TREE_TYPE (inner))
|
&& host_integerp (TYPE_SIZE_UNIT (TREE_TYPE (inner)), 0))
|
&& host_integerp (TYPE_SIZE_UNIT (TREE_TYPE (inner)), 0))
|
{
|
{
|
HOST_WIDE_INT size
|
HOST_WIDE_INT size
|
= tree_low_cst (TYPE_SIZE_UNIT (TREE_TYPE (inner)), 0);
|
= tree_low_cst (TYPE_SIZE_UNIT (TREE_TYPE (inner)), 0);
|
/* If we can prove the memory starting at XEXP (mem, 0)
|
/* If we can prove the memory starting at XEXP (mem, 0)
|
and ending at XEXP (mem, 0) + LENGTH will fit into
|
and ending at XEXP (mem, 0) + LENGTH will fit into
|
this field, we can keep that COMPONENT_REF in MEM_EXPR. */
|
this field, we can keep that COMPONENT_REF in MEM_EXPR. */
|
if (offset <= size
|
if (offset <= size
|
&& length <= size
|
&& length <= size
|
&& offset + length <= size)
|
&& offset + length <= size)
|
break;
|
break;
|
}
|
}
|
|
|
if (offset >= 0
|
if (offset >= 0
|
&& host_integerp (DECL_FIELD_OFFSET (field), 0))
|
&& host_integerp (DECL_FIELD_OFFSET (field), 0))
|
offset += tree_low_cst (DECL_FIELD_OFFSET (field), 0)
|
offset += tree_low_cst (DECL_FIELD_OFFSET (field), 0)
|
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (field), 1)
|
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (field), 1)
|
/ BITS_PER_UNIT;
|
/ BITS_PER_UNIT;
|
else
|
else
|
{
|
{
|
offset = -1;
|
offset = -1;
|
length = -1;
|
length = -1;
|
}
|
}
|
|
|
mem_expr = TREE_OPERAND (mem_expr, 0);
|
mem_expr = TREE_OPERAND (mem_expr, 0);
|
inner = TREE_OPERAND (inner, 0);
|
inner = TREE_OPERAND (inner, 0);
|
}
|
}
|
|
|
if (mem_expr == NULL)
|
if (mem_expr == NULL)
|
offset = -1;
|
offset = -1;
|
if (mem_expr != MEM_EXPR (mem))
|
if (mem_expr != MEM_EXPR (mem))
|
{
|
{
|
set_mem_expr (mem, mem_expr);
|
set_mem_expr (mem, mem_expr);
|
set_mem_offset (mem, offset >= 0 ? GEN_INT (offset) : NULL_RTX);
|
set_mem_offset (mem, offset >= 0 ? GEN_INT (offset) : NULL_RTX);
|
}
|
}
|
}
|
}
|
set_mem_alias_set (mem, 0);
|
set_mem_alias_set (mem, 0);
|
set_mem_size (mem, NULL_RTX);
|
set_mem_size (mem, NULL_RTX);
|
}
|
}
|
|
|
return mem;
|
return mem;
|
}
|
}
|
|
|
/* Built-in functions to perform an untyped call and return. */
|
/* Built-in functions to perform an untyped call and return. */
|
|
|
/* For each register that may be used for calling a function, this
|
/* For each register that may be used for calling a function, this
|
gives a mode used to copy the register's value. VOIDmode indicates
|
gives a mode used to copy the register's value. VOIDmode indicates
|
the register is not used for calling a function. If the machine
|
the register is not used for calling a function. If the machine
|
has register windows, this gives only the outbound registers.
|
has register windows, this gives only the outbound registers.
|
INCOMING_REGNO gives the corresponding inbound register. */
|
INCOMING_REGNO gives the corresponding inbound register. */
|
static enum machine_mode apply_args_mode[FIRST_PSEUDO_REGISTER];
|
static enum machine_mode apply_args_mode[FIRST_PSEUDO_REGISTER];
|
|
|
/* For each register that may be used for returning values, this gives
|
/* For each register that may be used for returning values, this gives
|
a mode used to copy the register's value. VOIDmode indicates the
|
a mode used to copy the register's value. VOIDmode indicates the
|
register is not used for returning values. If the machine has
|
register is not used for returning values. If the machine has
|
register windows, this gives only the outbound registers.
|
register windows, this gives only the outbound registers.
|
INCOMING_REGNO gives the corresponding inbound register. */
|
INCOMING_REGNO gives the corresponding inbound register. */
|
static enum machine_mode apply_result_mode[FIRST_PSEUDO_REGISTER];
|
static enum machine_mode apply_result_mode[FIRST_PSEUDO_REGISTER];
|
|
|
/* For each register that may be used for calling a function, this
|
/* For each register that may be used for calling a function, this
|
gives the offset of that register into the block returned by
|
gives the offset of that register into the block returned by
|
__builtin_apply_args. 0 indicates that the register is not
|
__builtin_apply_args. 0 indicates that the register is not
|
used for calling a function. */
|
used for calling a function. */
|
static int apply_args_reg_offset[FIRST_PSEUDO_REGISTER];
|
static int apply_args_reg_offset[FIRST_PSEUDO_REGISTER];
|
|
|
/* Return the size required for the block returned by __builtin_apply_args,
|
/* Return the size required for the block returned by __builtin_apply_args,
|
and initialize apply_args_mode. */
|
and initialize apply_args_mode. */
|
|
|
static int
|
static int
|
apply_args_size (void)
|
apply_args_size (void)
|
{
|
{
|
static int size = -1;
|
static int size = -1;
|
int align;
|
int align;
|
unsigned int regno;
|
unsigned int regno;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
|
|
/* The values computed by this function never change. */
|
/* The values computed by this function never change. */
|
if (size < 0)
|
if (size < 0)
|
{
|
{
|
/* The first value is the incoming arg-pointer. */
|
/* The first value is the incoming arg-pointer. */
|
size = GET_MODE_SIZE (Pmode);
|
size = GET_MODE_SIZE (Pmode);
|
|
|
/* The second value is the structure value address unless this is
|
/* The second value is the structure value address unless this is
|
passed as an "invisible" first argument. */
|
passed as an "invisible" first argument. */
|
if (targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 0))
|
if (targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 0))
|
size += GET_MODE_SIZE (Pmode);
|
size += GET_MODE_SIZE (Pmode);
|
|
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if (FUNCTION_ARG_REGNO_P (regno))
|
if (FUNCTION_ARG_REGNO_P (regno))
|
{
|
{
|
mode = reg_raw_mode[regno];
|
mode = reg_raw_mode[regno];
|
|
|
gcc_assert (mode != VOIDmode);
|
gcc_assert (mode != VOIDmode);
|
|
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
if (size % align != 0)
|
if (size % align != 0)
|
size = CEIL (size, align) * align;
|
size = CEIL (size, align) * align;
|
apply_args_reg_offset[regno] = size;
|
apply_args_reg_offset[regno] = size;
|
size += GET_MODE_SIZE (mode);
|
size += GET_MODE_SIZE (mode);
|
apply_args_mode[regno] = mode;
|
apply_args_mode[regno] = mode;
|
}
|
}
|
else
|
else
|
{
|
{
|
apply_args_mode[regno] = VOIDmode;
|
apply_args_mode[regno] = VOIDmode;
|
apply_args_reg_offset[regno] = 0;
|
apply_args_reg_offset[regno] = 0;
|
}
|
}
|
}
|
}
|
return size;
|
return size;
|
}
|
}
|
|
|
/* Return the size required for the block returned by __builtin_apply,
|
/* Return the size required for the block returned by __builtin_apply,
|
and initialize apply_result_mode. */
|
and initialize apply_result_mode. */
|
|
|
static int
|
static int
|
apply_result_size (void)
|
apply_result_size (void)
|
{
|
{
|
static int size = -1;
|
static int size = -1;
|
int align, regno;
|
int align, regno;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
|
|
/* The values computed by this function never change. */
|
/* The values computed by this function never change. */
|
if (size < 0)
|
if (size < 0)
|
{
|
{
|
size = 0;
|
size = 0;
|
|
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if (FUNCTION_VALUE_REGNO_P (regno))
|
if (FUNCTION_VALUE_REGNO_P (regno))
|
{
|
{
|
mode = reg_raw_mode[regno];
|
mode = reg_raw_mode[regno];
|
|
|
gcc_assert (mode != VOIDmode);
|
gcc_assert (mode != VOIDmode);
|
|
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
if (size % align != 0)
|
if (size % align != 0)
|
size = CEIL (size, align) * align;
|
size = CEIL (size, align) * align;
|
size += GET_MODE_SIZE (mode);
|
size += GET_MODE_SIZE (mode);
|
apply_result_mode[regno] = mode;
|
apply_result_mode[regno] = mode;
|
}
|
}
|
else
|
else
|
apply_result_mode[regno] = VOIDmode;
|
apply_result_mode[regno] = VOIDmode;
|
|
|
/* Allow targets that use untyped_call and untyped_return to override
|
/* Allow targets that use untyped_call and untyped_return to override
|
the size so that machine-specific information can be stored here. */
|
the size so that machine-specific information can be stored here. */
|
#ifdef APPLY_RESULT_SIZE
|
#ifdef APPLY_RESULT_SIZE
|
size = APPLY_RESULT_SIZE;
|
size = APPLY_RESULT_SIZE;
|
#endif
|
#endif
|
}
|
}
|
return size;
|
return size;
|
}
|
}
|
|
|
#if defined (HAVE_untyped_call) || defined (HAVE_untyped_return)
|
#if defined (HAVE_untyped_call) || defined (HAVE_untyped_return)
|
/* Create a vector describing the result block RESULT. If SAVEP is true,
|
/* Create a vector describing the result block RESULT. If SAVEP is true,
|
the result block is used to save the values; otherwise it is used to
|
the result block is used to save the values; otherwise it is used to
|
restore the values. */
|
restore the values. */
|
|
|
static rtx
|
static rtx
|
result_vector (int savep, rtx result)
|
result_vector (int savep, rtx result)
|
{
|
{
|
int regno, size, align, nelts;
|
int regno, size, align, nelts;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
rtx reg, mem;
|
rtx reg, mem;
|
rtx *savevec = alloca (FIRST_PSEUDO_REGISTER * sizeof (rtx));
|
rtx *savevec = alloca (FIRST_PSEUDO_REGISTER * sizeof (rtx));
|
|
|
size = nelts = 0;
|
size = nelts = 0;
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if ((mode = apply_result_mode[regno]) != VOIDmode)
|
if ((mode = apply_result_mode[regno]) != VOIDmode)
|
{
|
{
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
if (size % align != 0)
|
if (size % align != 0)
|
size = CEIL (size, align) * align;
|
size = CEIL (size, align) * align;
|
reg = gen_rtx_REG (mode, savep ? regno : INCOMING_REGNO (regno));
|
reg = gen_rtx_REG (mode, savep ? regno : INCOMING_REGNO (regno));
|
mem = adjust_address (result, mode, size);
|
mem = adjust_address (result, mode, size);
|
savevec[nelts++] = (savep
|
savevec[nelts++] = (savep
|
? gen_rtx_SET (VOIDmode, mem, reg)
|
? gen_rtx_SET (VOIDmode, mem, reg)
|
: gen_rtx_SET (VOIDmode, reg, mem));
|
: gen_rtx_SET (VOIDmode, reg, mem));
|
size += GET_MODE_SIZE (mode);
|
size += GET_MODE_SIZE (mode);
|
}
|
}
|
return gen_rtx_PARALLEL (VOIDmode, gen_rtvec_v (nelts, savevec));
|
return gen_rtx_PARALLEL (VOIDmode, gen_rtvec_v (nelts, savevec));
|
}
|
}
|
#endif /* HAVE_untyped_call or HAVE_untyped_return */
|
#endif /* HAVE_untyped_call or HAVE_untyped_return */
|
|
|
/* Save the state required to perform an untyped call with the same
|
/* Save the state required to perform an untyped call with the same
|
arguments as were passed to the current function. */
|
arguments as were passed to the current function. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_apply_args_1 (void)
|
expand_builtin_apply_args_1 (void)
|
{
|
{
|
rtx registers, tem;
|
rtx registers, tem;
|
int size, align, regno;
|
int size, align, regno;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
rtx struct_incoming_value = targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 1);
|
rtx struct_incoming_value = targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 1);
|
|
|
/* Create a block where the arg-pointer, structure value address,
|
/* Create a block where the arg-pointer, structure value address,
|
and argument registers can be saved. */
|
and argument registers can be saved. */
|
registers = assign_stack_local (BLKmode, apply_args_size (), -1);
|
registers = assign_stack_local (BLKmode, apply_args_size (), -1);
|
|
|
/* Walk past the arg-pointer and structure value address. */
|
/* Walk past the arg-pointer and structure value address. */
|
size = GET_MODE_SIZE (Pmode);
|
size = GET_MODE_SIZE (Pmode);
|
if (targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 0))
|
if (targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 0))
|
size += GET_MODE_SIZE (Pmode);
|
size += GET_MODE_SIZE (Pmode);
|
|
|
/* Save each register used in calling a function to the block. */
|
/* Save each register used in calling a function to the block. */
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if ((mode = apply_args_mode[regno]) != VOIDmode)
|
if ((mode = apply_args_mode[regno]) != VOIDmode)
|
{
|
{
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
if (size % align != 0)
|
if (size % align != 0)
|
size = CEIL (size, align) * align;
|
size = CEIL (size, align) * align;
|
|
|
tem = gen_rtx_REG (mode, INCOMING_REGNO (regno));
|
tem = gen_rtx_REG (mode, INCOMING_REGNO (regno));
|
|
|
emit_move_insn (adjust_address (registers, mode, size), tem);
|
emit_move_insn (adjust_address (registers, mode, size), tem);
|
size += GET_MODE_SIZE (mode);
|
size += GET_MODE_SIZE (mode);
|
}
|
}
|
|
|
/* Save the arg pointer to the block. */
|
/* Save the arg pointer to the block. */
|
tem = copy_to_reg (virtual_incoming_args_rtx);
|
tem = copy_to_reg (virtual_incoming_args_rtx);
|
#ifdef STACK_GROWS_DOWNWARD
|
#ifdef STACK_GROWS_DOWNWARD
|
/* We need the pointer as the caller actually passed them to us, not
|
/* We need the pointer as the caller actually passed them to us, not
|
as we might have pretended they were passed. Make sure it's a valid
|
as we might have pretended they were passed. Make sure it's a valid
|
operand, as emit_move_insn isn't expected to handle a PLUS. */
|
operand, as emit_move_insn isn't expected to handle a PLUS. */
|
tem
|
tem
|
= force_operand (plus_constant (tem, current_function_pretend_args_size),
|
= force_operand (plus_constant (tem, current_function_pretend_args_size),
|
NULL_RTX);
|
NULL_RTX);
|
#endif
|
#endif
|
emit_move_insn (adjust_address (registers, Pmode, 0), tem);
|
emit_move_insn (adjust_address (registers, Pmode, 0), tem);
|
|
|
size = GET_MODE_SIZE (Pmode);
|
size = GET_MODE_SIZE (Pmode);
|
|
|
/* Save the structure value address unless this is passed as an
|
/* Save the structure value address unless this is passed as an
|
"invisible" first argument. */
|
"invisible" first argument. */
|
if (struct_incoming_value)
|
if (struct_incoming_value)
|
{
|
{
|
emit_move_insn (adjust_address (registers, Pmode, size),
|
emit_move_insn (adjust_address (registers, Pmode, size),
|
copy_to_reg (struct_incoming_value));
|
copy_to_reg (struct_incoming_value));
|
size += GET_MODE_SIZE (Pmode);
|
size += GET_MODE_SIZE (Pmode);
|
}
|
}
|
|
|
/* Return the address of the block. */
|
/* Return the address of the block. */
|
return copy_addr_to_reg (XEXP (registers, 0));
|
return copy_addr_to_reg (XEXP (registers, 0));
|
}
|
}
|
|
|
/* __builtin_apply_args returns block of memory allocated on
|
/* __builtin_apply_args returns block of memory allocated on
|
the stack into which is stored the arg pointer, structure
|
the stack into which is stored the arg pointer, structure
|
value address, static chain, and all the registers that might
|
value address, static chain, and all the registers that might
|
possibly be used in performing a function call. The code is
|
possibly be used in performing a function call. The code is
|
moved to the start of the function so the incoming values are
|
moved to the start of the function so the incoming values are
|
saved. */
|
saved. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_apply_args (void)
|
expand_builtin_apply_args (void)
|
{
|
{
|
/* Don't do __builtin_apply_args more than once in a function.
|
/* Don't do __builtin_apply_args more than once in a function.
|
Save the result of the first call and reuse it. */
|
Save the result of the first call and reuse it. */
|
if (apply_args_value != 0)
|
if (apply_args_value != 0)
|
return apply_args_value;
|
return apply_args_value;
|
{
|
{
|
/* When this function is called, it means that registers must be
|
/* When this function is called, it means that registers must be
|
saved on entry to this function. So we migrate the
|
saved on entry to this function. So we migrate the
|
call to the first insn of this function. */
|
call to the first insn of this function. */
|
rtx temp;
|
rtx temp;
|
rtx seq;
|
rtx seq;
|
|
|
start_sequence ();
|
start_sequence ();
|
temp = expand_builtin_apply_args_1 ();
|
temp = expand_builtin_apply_args_1 ();
|
seq = get_insns ();
|
seq = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
|
|
apply_args_value = temp;
|
apply_args_value = temp;
|
|
|
/* Put the insns after the NOTE that starts the function.
|
/* Put the insns after the NOTE that starts the function.
|
If this is inside a start_sequence, make the outer-level insn
|
If this is inside a start_sequence, make the outer-level insn
|
chain current, so the code is placed at the start of the
|
chain current, so the code is placed at the start of the
|
function. */
|
function. */
|
push_topmost_sequence ();
|
push_topmost_sequence ();
|
emit_insn_before (seq, NEXT_INSN (entry_of_function ()));
|
emit_insn_before (seq, NEXT_INSN (entry_of_function ()));
|
pop_topmost_sequence ();
|
pop_topmost_sequence ();
|
return temp;
|
return temp;
|
}
|
}
|
}
|
}
|
|
|
/* Perform an untyped call and save the state required to perform an
|
/* Perform an untyped call and save the state required to perform an
|
untyped return of whatever value was returned by the given function. */
|
untyped return of whatever value was returned by the given function. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_apply (rtx function, rtx arguments, rtx argsize)
|
expand_builtin_apply (rtx function, rtx arguments, rtx argsize)
|
{
|
{
|
int size, align, regno;
|
int size, align, regno;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
rtx incoming_args, result, reg, dest, src, call_insn;
|
rtx incoming_args, result, reg, dest, src, call_insn;
|
rtx old_stack_level = 0;
|
rtx old_stack_level = 0;
|
rtx call_fusage = 0;
|
rtx call_fusage = 0;
|
rtx struct_value = targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 0);
|
rtx struct_value = targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 0);
|
|
|
arguments = convert_memory_address (Pmode, arguments);
|
arguments = convert_memory_address (Pmode, arguments);
|
|
|
/* Create a block where the return registers can be saved. */
|
/* Create a block where the return registers can be saved. */
|
result = assign_stack_local (BLKmode, apply_result_size (), -1);
|
result = assign_stack_local (BLKmode, apply_result_size (), -1);
|
|
|
/* Fetch the arg pointer from the ARGUMENTS block. */
|
/* Fetch the arg pointer from the ARGUMENTS block. */
|
incoming_args = gen_reg_rtx (Pmode);
|
incoming_args = gen_reg_rtx (Pmode);
|
emit_move_insn (incoming_args, gen_rtx_MEM (Pmode, arguments));
|
emit_move_insn (incoming_args, gen_rtx_MEM (Pmode, arguments));
|
#ifndef STACK_GROWS_DOWNWARD
|
#ifndef STACK_GROWS_DOWNWARD
|
incoming_args = expand_simple_binop (Pmode, MINUS, incoming_args, argsize,
|
incoming_args = expand_simple_binop (Pmode, MINUS, incoming_args, argsize,
|
incoming_args, 0, OPTAB_LIB_WIDEN);
|
incoming_args, 0, OPTAB_LIB_WIDEN);
|
#endif
|
#endif
|
|
|
/* Push a new argument block and copy the arguments. Do not allow
|
/* Push a new argument block and copy the arguments. Do not allow
|
the (potential) memcpy call below to interfere with our stack
|
the (potential) memcpy call below to interfere with our stack
|
manipulations. */
|
manipulations. */
|
do_pending_stack_adjust ();
|
do_pending_stack_adjust ();
|
NO_DEFER_POP;
|
NO_DEFER_POP;
|
|
|
/* Save the stack with nonlocal if available. */
|
/* Save the stack with nonlocal if available. */
|
#ifdef HAVE_save_stack_nonlocal
|
#ifdef HAVE_save_stack_nonlocal
|
if (HAVE_save_stack_nonlocal)
|
if (HAVE_save_stack_nonlocal)
|
emit_stack_save (SAVE_NONLOCAL, &old_stack_level, NULL_RTX);
|
emit_stack_save (SAVE_NONLOCAL, &old_stack_level, NULL_RTX);
|
else
|
else
|
#endif
|
#endif
|
emit_stack_save (SAVE_BLOCK, &old_stack_level, NULL_RTX);
|
emit_stack_save (SAVE_BLOCK, &old_stack_level, NULL_RTX);
|
|
|
/* Allocate a block of memory onto the stack and copy the memory
|
/* Allocate a block of memory onto the stack and copy the memory
|
arguments to the outgoing arguments address. */
|
arguments to the outgoing arguments address. */
|
allocate_dynamic_stack_space (argsize, 0, BITS_PER_UNIT);
|
allocate_dynamic_stack_space (argsize, 0, BITS_PER_UNIT);
|
dest = virtual_outgoing_args_rtx;
|
dest = virtual_outgoing_args_rtx;
|
#ifndef STACK_GROWS_DOWNWARD
|
#ifndef STACK_GROWS_DOWNWARD
|
if (GET_CODE (argsize) == CONST_INT)
|
if (GET_CODE (argsize) == CONST_INT)
|
dest = plus_constant (dest, -INTVAL (argsize));
|
dest = plus_constant (dest, -INTVAL (argsize));
|
else
|
else
|
dest = gen_rtx_PLUS (Pmode, dest, negate_rtx (Pmode, argsize));
|
dest = gen_rtx_PLUS (Pmode, dest, negate_rtx (Pmode, argsize));
|
#endif
|
#endif
|
dest = gen_rtx_MEM (BLKmode, dest);
|
dest = gen_rtx_MEM (BLKmode, dest);
|
set_mem_align (dest, PARM_BOUNDARY);
|
set_mem_align (dest, PARM_BOUNDARY);
|
src = gen_rtx_MEM (BLKmode, incoming_args);
|
src = gen_rtx_MEM (BLKmode, incoming_args);
|
set_mem_align (src, PARM_BOUNDARY);
|
set_mem_align (src, PARM_BOUNDARY);
|
emit_block_move (dest, src, argsize, BLOCK_OP_NORMAL);
|
emit_block_move (dest, src, argsize, BLOCK_OP_NORMAL);
|
|
|
/* Refer to the argument block. */
|
/* Refer to the argument block. */
|
apply_args_size ();
|
apply_args_size ();
|
arguments = gen_rtx_MEM (BLKmode, arguments);
|
arguments = gen_rtx_MEM (BLKmode, arguments);
|
set_mem_align (arguments, PARM_BOUNDARY);
|
set_mem_align (arguments, PARM_BOUNDARY);
|
|
|
/* Walk past the arg-pointer and structure value address. */
|
/* Walk past the arg-pointer and structure value address. */
|
size = GET_MODE_SIZE (Pmode);
|
size = GET_MODE_SIZE (Pmode);
|
if (struct_value)
|
if (struct_value)
|
size += GET_MODE_SIZE (Pmode);
|
size += GET_MODE_SIZE (Pmode);
|
|
|
/* Restore each of the registers previously saved. Make USE insns
|
/* Restore each of the registers previously saved. Make USE insns
|
for each of these registers for use in making the call. */
|
for each of these registers for use in making the call. */
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if ((mode = apply_args_mode[regno]) != VOIDmode)
|
if ((mode = apply_args_mode[regno]) != VOIDmode)
|
{
|
{
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
if (size % align != 0)
|
if (size % align != 0)
|
size = CEIL (size, align) * align;
|
size = CEIL (size, align) * align;
|
reg = gen_rtx_REG (mode, regno);
|
reg = gen_rtx_REG (mode, regno);
|
emit_move_insn (reg, adjust_address (arguments, mode, size));
|
emit_move_insn (reg, adjust_address (arguments, mode, size));
|
use_reg (&call_fusage, reg);
|
use_reg (&call_fusage, reg);
|
size += GET_MODE_SIZE (mode);
|
size += GET_MODE_SIZE (mode);
|
}
|
}
|
|
|
/* Restore the structure value address unless this is passed as an
|
/* Restore the structure value address unless this is passed as an
|
"invisible" first argument. */
|
"invisible" first argument. */
|
size = GET_MODE_SIZE (Pmode);
|
size = GET_MODE_SIZE (Pmode);
|
if (struct_value)
|
if (struct_value)
|
{
|
{
|
rtx value = gen_reg_rtx (Pmode);
|
rtx value = gen_reg_rtx (Pmode);
|
emit_move_insn (value, adjust_address (arguments, Pmode, size));
|
emit_move_insn (value, adjust_address (arguments, Pmode, size));
|
emit_move_insn (struct_value, value);
|
emit_move_insn (struct_value, value);
|
if (REG_P (struct_value))
|
if (REG_P (struct_value))
|
use_reg (&call_fusage, struct_value);
|
use_reg (&call_fusage, struct_value);
|
size += GET_MODE_SIZE (Pmode);
|
size += GET_MODE_SIZE (Pmode);
|
}
|
}
|
|
|
/* All arguments and registers used for the call are set up by now! */
|
/* All arguments and registers used for the call are set up by now! */
|
function = prepare_call_address (function, NULL, &call_fusage, 0, 0);
|
function = prepare_call_address (function, NULL, &call_fusage, 0, 0);
|
|
|
/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
|
/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
|
and we don't want to load it into a register as an optimization,
|
and we don't want to load it into a register as an optimization,
|
because prepare_call_address already did it if it should be done. */
|
because prepare_call_address already did it if it should be done. */
|
if (GET_CODE (function) != SYMBOL_REF)
|
if (GET_CODE (function) != SYMBOL_REF)
|
function = memory_address (FUNCTION_MODE, function);
|
function = memory_address (FUNCTION_MODE, function);
|
|
|
/* Generate the actual call instruction and save the return value. */
|
/* Generate the actual call instruction and save the return value. */
|
#ifdef HAVE_untyped_call
|
#ifdef HAVE_untyped_call
|
if (HAVE_untyped_call)
|
if (HAVE_untyped_call)
|
emit_call_insn (gen_untyped_call (gen_rtx_MEM (FUNCTION_MODE, function),
|
emit_call_insn (gen_untyped_call (gen_rtx_MEM (FUNCTION_MODE, function),
|
result, result_vector (1, result)));
|
result, result_vector (1, result)));
|
else
|
else
|
#endif
|
#endif
|
#ifdef HAVE_call_value
|
#ifdef HAVE_call_value
|
if (HAVE_call_value)
|
if (HAVE_call_value)
|
{
|
{
|
rtx valreg = 0;
|
rtx valreg = 0;
|
|
|
/* Locate the unique return register. It is not possible to
|
/* Locate the unique return register. It is not possible to
|
express a call that sets more than one return register using
|
express a call that sets more than one return register using
|
call_value; use untyped_call for that. In fact, untyped_call
|
call_value; use untyped_call for that. In fact, untyped_call
|
only needs to save the return registers in the given block. */
|
only needs to save the return registers in the given block. */
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if ((mode = apply_result_mode[regno]) != VOIDmode)
|
if ((mode = apply_result_mode[regno]) != VOIDmode)
|
{
|
{
|
gcc_assert (!valreg); /* HAVE_untyped_call required. */
|
gcc_assert (!valreg); /* HAVE_untyped_call required. */
|
|
|
valreg = gen_rtx_REG (mode, regno);
|
valreg = gen_rtx_REG (mode, regno);
|
}
|
}
|
|
|
emit_call_insn (GEN_CALL_VALUE (valreg,
|
emit_call_insn (GEN_CALL_VALUE (valreg,
|
gen_rtx_MEM (FUNCTION_MODE, function),
|
gen_rtx_MEM (FUNCTION_MODE, function),
|
const0_rtx, NULL_RTX, const0_rtx));
|
const0_rtx, NULL_RTX, const0_rtx));
|
|
|
emit_move_insn (adjust_address (result, GET_MODE (valreg), 0), valreg);
|
emit_move_insn (adjust_address (result, GET_MODE (valreg), 0), valreg);
|
}
|
}
|
else
|
else
|
#endif
|
#endif
|
gcc_unreachable ();
|
gcc_unreachable ();
|
|
|
/* Find the CALL insn we just emitted, and attach the register usage
|
/* Find the CALL insn we just emitted, and attach the register usage
|
information. */
|
information. */
|
call_insn = last_call_insn ();
|
call_insn = last_call_insn ();
|
add_function_usage_to (call_insn, call_fusage);
|
add_function_usage_to (call_insn, call_fusage);
|
|
|
/* Restore the stack. */
|
/* Restore the stack. */
|
#ifdef HAVE_save_stack_nonlocal
|
#ifdef HAVE_save_stack_nonlocal
|
if (HAVE_save_stack_nonlocal)
|
if (HAVE_save_stack_nonlocal)
|
emit_stack_restore (SAVE_NONLOCAL, old_stack_level, NULL_RTX);
|
emit_stack_restore (SAVE_NONLOCAL, old_stack_level, NULL_RTX);
|
else
|
else
|
#endif
|
#endif
|
emit_stack_restore (SAVE_BLOCK, old_stack_level, NULL_RTX);
|
emit_stack_restore (SAVE_BLOCK, old_stack_level, NULL_RTX);
|
|
|
OK_DEFER_POP;
|
OK_DEFER_POP;
|
|
|
/* Return the address of the result block. */
|
/* Return the address of the result block. */
|
result = copy_addr_to_reg (XEXP (result, 0));
|
result = copy_addr_to_reg (XEXP (result, 0));
|
return convert_memory_address (ptr_mode, result);
|
return convert_memory_address (ptr_mode, result);
|
}
|
}
|
|
|
/* Perform an untyped return. */
|
/* Perform an untyped return. */
|
|
|
static void
|
static void
|
expand_builtin_return (rtx result)
|
expand_builtin_return (rtx result)
|
{
|
{
|
int size, align, regno;
|
int size, align, regno;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
rtx reg;
|
rtx reg;
|
rtx call_fusage = 0;
|
rtx call_fusage = 0;
|
|
|
result = convert_memory_address (Pmode, result);
|
result = convert_memory_address (Pmode, result);
|
|
|
apply_result_size ();
|
apply_result_size ();
|
result = gen_rtx_MEM (BLKmode, result);
|
result = gen_rtx_MEM (BLKmode, result);
|
|
|
#ifdef HAVE_untyped_return
|
#ifdef HAVE_untyped_return
|
if (HAVE_untyped_return)
|
if (HAVE_untyped_return)
|
{
|
{
|
emit_jump_insn (gen_untyped_return (result, result_vector (0, result)));
|
emit_jump_insn (gen_untyped_return (result, result_vector (0, result)));
|
emit_barrier ();
|
emit_barrier ();
|
return;
|
return;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Restore the return value and note that each value is used. */
|
/* Restore the return value and note that each value is used. */
|
size = 0;
|
size = 0;
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
|
if ((mode = apply_result_mode[regno]) != VOIDmode)
|
if ((mode = apply_result_mode[regno]) != VOIDmode)
|
{
|
{
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
align = GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT;
|
if (size % align != 0)
|
if (size % align != 0)
|
size = CEIL (size, align) * align;
|
size = CEIL (size, align) * align;
|
reg = gen_rtx_REG (mode, INCOMING_REGNO (regno));
|
reg = gen_rtx_REG (mode, INCOMING_REGNO (regno));
|
emit_move_insn (reg, adjust_address (result, mode, size));
|
emit_move_insn (reg, adjust_address (result, mode, size));
|
|
|
push_to_sequence (call_fusage);
|
push_to_sequence (call_fusage);
|
emit_insn (gen_rtx_USE (VOIDmode, reg));
|
emit_insn (gen_rtx_USE (VOIDmode, reg));
|
call_fusage = get_insns ();
|
call_fusage = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
size += GET_MODE_SIZE (mode);
|
size += GET_MODE_SIZE (mode);
|
}
|
}
|
|
|
/* Put the USE insns before the return. */
|
/* Put the USE insns before the return. */
|
emit_insn (call_fusage);
|
emit_insn (call_fusage);
|
|
|
/* Return whatever values was restored by jumping directly to the end
|
/* Return whatever values was restored by jumping directly to the end
|
of the function. */
|
of the function. */
|
expand_naked_return ();
|
expand_naked_return ();
|
}
|
}
|
|
|
/* Used by expand_builtin_classify_type and fold_builtin_classify_type. */
|
/* Used by expand_builtin_classify_type and fold_builtin_classify_type. */
|
|
|
static enum type_class
|
static enum type_class
|
type_to_class (tree type)
|
type_to_class (tree type)
|
{
|
{
|
switch (TREE_CODE (type))
|
switch (TREE_CODE (type))
|
{
|
{
|
case VOID_TYPE: return void_type_class;
|
case VOID_TYPE: return void_type_class;
|
case INTEGER_TYPE: return integer_type_class;
|
case INTEGER_TYPE: return integer_type_class;
|
case ENUMERAL_TYPE: return enumeral_type_class;
|
case ENUMERAL_TYPE: return enumeral_type_class;
|
case BOOLEAN_TYPE: return boolean_type_class;
|
case BOOLEAN_TYPE: return boolean_type_class;
|
case POINTER_TYPE: return pointer_type_class;
|
case POINTER_TYPE: return pointer_type_class;
|
case REFERENCE_TYPE: return reference_type_class;
|
case REFERENCE_TYPE: return reference_type_class;
|
case OFFSET_TYPE: return offset_type_class;
|
case OFFSET_TYPE: return offset_type_class;
|
case REAL_TYPE: return real_type_class;
|
case REAL_TYPE: return real_type_class;
|
case COMPLEX_TYPE: return complex_type_class;
|
case COMPLEX_TYPE: return complex_type_class;
|
case FUNCTION_TYPE: return function_type_class;
|
case FUNCTION_TYPE: return function_type_class;
|
case METHOD_TYPE: return method_type_class;
|
case METHOD_TYPE: return method_type_class;
|
case RECORD_TYPE: return record_type_class;
|
case RECORD_TYPE: return record_type_class;
|
case UNION_TYPE:
|
case UNION_TYPE:
|
case QUAL_UNION_TYPE: return union_type_class;
|
case QUAL_UNION_TYPE: return union_type_class;
|
case ARRAY_TYPE: return (TYPE_STRING_FLAG (type)
|
case ARRAY_TYPE: return (TYPE_STRING_FLAG (type)
|
? string_type_class : array_type_class);
|
? string_type_class : array_type_class);
|
case LANG_TYPE: return lang_type_class;
|
case LANG_TYPE: return lang_type_class;
|
default: return no_type_class;
|
default: return no_type_class;
|
}
|
}
|
}
|
}
|
|
|
/* Expand a call to __builtin_classify_type with arguments found in
|
/* Expand a call to __builtin_classify_type with arguments found in
|
ARGLIST. */
|
ARGLIST. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_classify_type (tree arglist)
|
expand_builtin_classify_type (tree arglist)
|
{
|
{
|
if (arglist != 0)
|
if (arglist != 0)
|
return GEN_INT (type_to_class (TREE_TYPE (TREE_VALUE (arglist))));
|
return GEN_INT (type_to_class (TREE_TYPE (TREE_VALUE (arglist))));
|
return GEN_INT (no_type_class);
|
return GEN_INT (no_type_class);
|
}
|
}
|
|
|
/* This helper macro, meant to be used in mathfn_built_in below,
|
/* This helper macro, meant to be used in mathfn_built_in below,
|
determines which among a set of three builtin math functions is
|
determines which among a set of three builtin math functions is
|
appropriate for a given type mode. The `F' and `L' cases are
|
appropriate for a given type mode. The `F' and `L' cases are
|
automatically generated from the `double' case. */
|
automatically generated from the `double' case. */
|
#define CASE_MATHFN(BUILT_IN_MATHFN) \
|
#define CASE_MATHFN(BUILT_IN_MATHFN) \
|
case BUILT_IN_MATHFN: case BUILT_IN_MATHFN##F: case BUILT_IN_MATHFN##L: \
|
case BUILT_IN_MATHFN: case BUILT_IN_MATHFN##F: case BUILT_IN_MATHFN##L: \
|
fcode = BUILT_IN_MATHFN; fcodef = BUILT_IN_MATHFN##F ; \
|
fcode = BUILT_IN_MATHFN; fcodef = BUILT_IN_MATHFN##F ; \
|
fcodel = BUILT_IN_MATHFN##L ; break;
|
fcodel = BUILT_IN_MATHFN##L ; break;
|
|
|
/* Return mathematic function equivalent to FN but operating directly
|
/* Return mathematic function equivalent to FN but operating directly
|
on TYPE, if available. If we can't do the conversion, return zero. */
|
on TYPE, if available. If we can't do the conversion, return zero. */
|
tree
|
tree
|
mathfn_built_in (tree type, enum built_in_function fn)
|
mathfn_built_in (tree type, enum built_in_function fn)
|
{
|
{
|
enum built_in_function fcode, fcodef, fcodel;
|
enum built_in_function fcode, fcodef, fcodel;
|
|
|
switch (fn)
|
switch (fn)
|
{
|
{
|
CASE_MATHFN (BUILT_IN_ACOS)
|
CASE_MATHFN (BUILT_IN_ACOS)
|
CASE_MATHFN (BUILT_IN_ACOSH)
|
CASE_MATHFN (BUILT_IN_ACOSH)
|
CASE_MATHFN (BUILT_IN_ASIN)
|
CASE_MATHFN (BUILT_IN_ASIN)
|
CASE_MATHFN (BUILT_IN_ASINH)
|
CASE_MATHFN (BUILT_IN_ASINH)
|
CASE_MATHFN (BUILT_IN_ATAN)
|
CASE_MATHFN (BUILT_IN_ATAN)
|
CASE_MATHFN (BUILT_IN_ATAN2)
|
CASE_MATHFN (BUILT_IN_ATAN2)
|
CASE_MATHFN (BUILT_IN_ATANH)
|
CASE_MATHFN (BUILT_IN_ATANH)
|
CASE_MATHFN (BUILT_IN_CBRT)
|
CASE_MATHFN (BUILT_IN_CBRT)
|
CASE_MATHFN (BUILT_IN_CEIL)
|
CASE_MATHFN (BUILT_IN_CEIL)
|
CASE_MATHFN (BUILT_IN_COPYSIGN)
|
CASE_MATHFN (BUILT_IN_COPYSIGN)
|
CASE_MATHFN (BUILT_IN_COS)
|
CASE_MATHFN (BUILT_IN_COS)
|
CASE_MATHFN (BUILT_IN_COSH)
|
CASE_MATHFN (BUILT_IN_COSH)
|
CASE_MATHFN (BUILT_IN_DREM)
|
CASE_MATHFN (BUILT_IN_DREM)
|
CASE_MATHFN (BUILT_IN_ERF)
|
CASE_MATHFN (BUILT_IN_ERF)
|
CASE_MATHFN (BUILT_IN_ERFC)
|
CASE_MATHFN (BUILT_IN_ERFC)
|
CASE_MATHFN (BUILT_IN_EXP)
|
CASE_MATHFN (BUILT_IN_EXP)
|
CASE_MATHFN (BUILT_IN_EXP10)
|
CASE_MATHFN (BUILT_IN_EXP10)
|
CASE_MATHFN (BUILT_IN_EXP2)
|
CASE_MATHFN (BUILT_IN_EXP2)
|
CASE_MATHFN (BUILT_IN_EXPM1)
|
CASE_MATHFN (BUILT_IN_EXPM1)
|
CASE_MATHFN (BUILT_IN_FABS)
|
CASE_MATHFN (BUILT_IN_FABS)
|
CASE_MATHFN (BUILT_IN_FDIM)
|
CASE_MATHFN (BUILT_IN_FDIM)
|
CASE_MATHFN (BUILT_IN_FLOOR)
|
CASE_MATHFN (BUILT_IN_FLOOR)
|
CASE_MATHFN (BUILT_IN_FMA)
|
CASE_MATHFN (BUILT_IN_FMA)
|
CASE_MATHFN (BUILT_IN_FMAX)
|
CASE_MATHFN (BUILT_IN_FMAX)
|
CASE_MATHFN (BUILT_IN_FMIN)
|
CASE_MATHFN (BUILT_IN_FMIN)
|
CASE_MATHFN (BUILT_IN_FMOD)
|
CASE_MATHFN (BUILT_IN_FMOD)
|
CASE_MATHFN (BUILT_IN_FREXP)
|
CASE_MATHFN (BUILT_IN_FREXP)
|
CASE_MATHFN (BUILT_IN_GAMMA)
|
CASE_MATHFN (BUILT_IN_GAMMA)
|
CASE_MATHFN (BUILT_IN_HUGE_VAL)
|
CASE_MATHFN (BUILT_IN_HUGE_VAL)
|
CASE_MATHFN (BUILT_IN_HYPOT)
|
CASE_MATHFN (BUILT_IN_HYPOT)
|
CASE_MATHFN (BUILT_IN_ILOGB)
|
CASE_MATHFN (BUILT_IN_ILOGB)
|
CASE_MATHFN (BUILT_IN_INF)
|
CASE_MATHFN (BUILT_IN_INF)
|
CASE_MATHFN (BUILT_IN_J0)
|
CASE_MATHFN (BUILT_IN_J0)
|
CASE_MATHFN (BUILT_IN_J1)
|
CASE_MATHFN (BUILT_IN_J1)
|
CASE_MATHFN (BUILT_IN_JN)
|
CASE_MATHFN (BUILT_IN_JN)
|
CASE_MATHFN (BUILT_IN_LCEIL)
|
CASE_MATHFN (BUILT_IN_LCEIL)
|
CASE_MATHFN (BUILT_IN_LDEXP)
|
CASE_MATHFN (BUILT_IN_LDEXP)
|
CASE_MATHFN (BUILT_IN_LFLOOR)
|
CASE_MATHFN (BUILT_IN_LFLOOR)
|
CASE_MATHFN (BUILT_IN_LGAMMA)
|
CASE_MATHFN (BUILT_IN_LGAMMA)
|
CASE_MATHFN (BUILT_IN_LLCEIL)
|
CASE_MATHFN (BUILT_IN_LLCEIL)
|
CASE_MATHFN (BUILT_IN_LLFLOOR)
|
CASE_MATHFN (BUILT_IN_LLFLOOR)
|
CASE_MATHFN (BUILT_IN_LLRINT)
|
CASE_MATHFN (BUILT_IN_LLRINT)
|
CASE_MATHFN (BUILT_IN_LLROUND)
|
CASE_MATHFN (BUILT_IN_LLROUND)
|
CASE_MATHFN (BUILT_IN_LOG)
|
CASE_MATHFN (BUILT_IN_LOG)
|
CASE_MATHFN (BUILT_IN_LOG10)
|
CASE_MATHFN (BUILT_IN_LOG10)
|
CASE_MATHFN (BUILT_IN_LOG1P)
|
CASE_MATHFN (BUILT_IN_LOG1P)
|
CASE_MATHFN (BUILT_IN_LOG2)
|
CASE_MATHFN (BUILT_IN_LOG2)
|
CASE_MATHFN (BUILT_IN_LOGB)
|
CASE_MATHFN (BUILT_IN_LOGB)
|
CASE_MATHFN (BUILT_IN_LRINT)
|
CASE_MATHFN (BUILT_IN_LRINT)
|
CASE_MATHFN (BUILT_IN_LROUND)
|
CASE_MATHFN (BUILT_IN_LROUND)
|
CASE_MATHFN (BUILT_IN_MODF)
|
CASE_MATHFN (BUILT_IN_MODF)
|
CASE_MATHFN (BUILT_IN_NAN)
|
CASE_MATHFN (BUILT_IN_NAN)
|
CASE_MATHFN (BUILT_IN_NANS)
|
CASE_MATHFN (BUILT_IN_NANS)
|
CASE_MATHFN (BUILT_IN_NEARBYINT)
|
CASE_MATHFN (BUILT_IN_NEARBYINT)
|
CASE_MATHFN (BUILT_IN_NEXTAFTER)
|
CASE_MATHFN (BUILT_IN_NEXTAFTER)
|
CASE_MATHFN (BUILT_IN_NEXTTOWARD)
|
CASE_MATHFN (BUILT_IN_NEXTTOWARD)
|
CASE_MATHFN (BUILT_IN_POW)
|
CASE_MATHFN (BUILT_IN_POW)
|
CASE_MATHFN (BUILT_IN_POWI)
|
CASE_MATHFN (BUILT_IN_POWI)
|
CASE_MATHFN (BUILT_IN_POW10)
|
CASE_MATHFN (BUILT_IN_POW10)
|
CASE_MATHFN (BUILT_IN_REMAINDER)
|
CASE_MATHFN (BUILT_IN_REMAINDER)
|
CASE_MATHFN (BUILT_IN_REMQUO)
|
CASE_MATHFN (BUILT_IN_REMQUO)
|
CASE_MATHFN (BUILT_IN_RINT)
|
CASE_MATHFN (BUILT_IN_RINT)
|
CASE_MATHFN (BUILT_IN_ROUND)
|
CASE_MATHFN (BUILT_IN_ROUND)
|
CASE_MATHFN (BUILT_IN_SCALB)
|
CASE_MATHFN (BUILT_IN_SCALB)
|
CASE_MATHFN (BUILT_IN_SCALBLN)
|
CASE_MATHFN (BUILT_IN_SCALBLN)
|
CASE_MATHFN (BUILT_IN_SCALBN)
|
CASE_MATHFN (BUILT_IN_SCALBN)
|
CASE_MATHFN (BUILT_IN_SIGNIFICAND)
|
CASE_MATHFN (BUILT_IN_SIGNIFICAND)
|
CASE_MATHFN (BUILT_IN_SIN)
|
CASE_MATHFN (BUILT_IN_SIN)
|
CASE_MATHFN (BUILT_IN_SINCOS)
|
CASE_MATHFN (BUILT_IN_SINCOS)
|
CASE_MATHFN (BUILT_IN_SINH)
|
CASE_MATHFN (BUILT_IN_SINH)
|
CASE_MATHFN (BUILT_IN_SQRT)
|
CASE_MATHFN (BUILT_IN_SQRT)
|
CASE_MATHFN (BUILT_IN_TAN)
|
CASE_MATHFN (BUILT_IN_TAN)
|
CASE_MATHFN (BUILT_IN_TANH)
|
CASE_MATHFN (BUILT_IN_TANH)
|
CASE_MATHFN (BUILT_IN_TGAMMA)
|
CASE_MATHFN (BUILT_IN_TGAMMA)
|
CASE_MATHFN (BUILT_IN_TRUNC)
|
CASE_MATHFN (BUILT_IN_TRUNC)
|
CASE_MATHFN (BUILT_IN_Y0)
|
CASE_MATHFN (BUILT_IN_Y0)
|
CASE_MATHFN (BUILT_IN_Y1)
|
CASE_MATHFN (BUILT_IN_Y1)
|
CASE_MATHFN (BUILT_IN_YN)
|
CASE_MATHFN (BUILT_IN_YN)
|
|
|
default:
|
default:
|
return 0;
|
return 0;
|
}
|
}
|
|
|
if (TYPE_MAIN_VARIANT (type) == double_type_node)
|
if (TYPE_MAIN_VARIANT (type) == double_type_node)
|
return implicit_built_in_decls[fcode];
|
return implicit_built_in_decls[fcode];
|
else if (TYPE_MAIN_VARIANT (type) == float_type_node)
|
else if (TYPE_MAIN_VARIANT (type) == float_type_node)
|
return implicit_built_in_decls[fcodef];
|
return implicit_built_in_decls[fcodef];
|
else if (TYPE_MAIN_VARIANT (type) == long_double_type_node)
|
else if (TYPE_MAIN_VARIANT (type) == long_double_type_node)
|
return implicit_built_in_decls[fcodel];
|
return implicit_built_in_decls[fcodel];
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* If errno must be maintained, expand the RTL to check if the result,
|
/* If errno must be maintained, expand the RTL to check if the result,
|
TARGET, of a built-in function call, EXP, is NaN, and if so set
|
TARGET, of a built-in function call, EXP, is NaN, and if so set
|
errno to EDOM. */
|
errno to EDOM. */
|
|
|
static void
|
static void
|
expand_errno_check (tree exp, rtx target)
|
expand_errno_check (tree exp, rtx target)
|
{
|
{
|
rtx lab = gen_label_rtx ();
|
rtx lab = gen_label_rtx ();
|
|
|
/* Test the result; if it is NaN, set errno=EDOM because
|
/* Test the result; if it is NaN, set errno=EDOM because
|
the argument was not in the domain. */
|
the argument was not in the domain. */
|
emit_cmp_and_jump_insns (target, target, EQ, 0, GET_MODE (target),
|
emit_cmp_and_jump_insns (target, target, EQ, 0, GET_MODE (target),
|
0, lab);
|
0, lab);
|
|
|
#ifdef TARGET_EDOM
|
#ifdef TARGET_EDOM
|
/* If this built-in doesn't throw an exception, set errno directly. */
|
/* If this built-in doesn't throw an exception, set errno directly. */
|
if (TREE_NOTHROW (TREE_OPERAND (TREE_OPERAND (exp, 0), 0)))
|
if (TREE_NOTHROW (TREE_OPERAND (TREE_OPERAND (exp, 0), 0)))
|
{
|
{
|
#ifdef GEN_ERRNO_RTX
|
#ifdef GEN_ERRNO_RTX
|
rtx errno_rtx = GEN_ERRNO_RTX;
|
rtx errno_rtx = GEN_ERRNO_RTX;
|
#else
|
#else
|
rtx errno_rtx
|
rtx errno_rtx
|
= gen_rtx_MEM (word_mode, gen_rtx_SYMBOL_REF (Pmode, "errno"));
|
= gen_rtx_MEM (word_mode, gen_rtx_SYMBOL_REF (Pmode, "errno"));
|
#endif
|
#endif
|
emit_move_insn (errno_rtx, GEN_INT (TARGET_EDOM));
|
emit_move_insn (errno_rtx, GEN_INT (TARGET_EDOM));
|
emit_label (lab);
|
emit_label (lab);
|
return;
|
return;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* We can't set errno=EDOM directly; let the library call do it.
|
/* We can't set errno=EDOM directly; let the library call do it.
|
Pop the arguments right away in case the call gets deleted. */
|
Pop the arguments right away in case the call gets deleted. */
|
NO_DEFER_POP;
|
NO_DEFER_POP;
|
expand_call (exp, target, 0);
|
expand_call (exp, target, 0);
|
OK_DEFER_POP;
|
OK_DEFER_POP;
|
emit_label (lab);
|
emit_label (lab);
|
}
|
}
|
|
|
|
|
/* Expand a call to one of the builtin math functions (sqrt, exp, or log).
|
/* Expand a call to one of the builtin math functions (sqrt, exp, or log).
|
Return 0 if a normal call should be emitted rather than expanding the
|
Return 0 if a normal call should be emitted rather than expanding the
|
function in-line. EXP is the expression that is a call to the builtin
|
function in-line. EXP is the expression that is a call to the builtin
|
function; if convenient, the result should be placed in TARGET.
|
function; if convenient, the result should be placed in TARGET.
|
SUBTARGET may be used as the target for computing one of EXP's operands. */
|
SUBTARGET may be used as the target for computing one of EXP's operands. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_mathfn (tree exp, rtx target, rtx subtarget)
|
expand_builtin_mathfn (tree exp, rtx target, rtx subtarget)
|
{
|
{
|
optab builtin_optab;
|
optab builtin_optab;
|
rtx op0, insns, before_call;
|
rtx op0, insns, before_call;
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
enum machine_mode mode;
|
enum machine_mode mode;
|
bool errno_set = false;
|
bool errno_set = false;
|
tree arg, narg;
|
tree arg, narg;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
errno_set = ! tree_expr_nonnegative_p (arg);
|
errno_set = ! tree_expr_nonnegative_p (arg);
|
builtin_optab = sqrt_optab;
|
builtin_optab = sqrt_optab;
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_EXP):
|
CASE_FLT_FN (BUILT_IN_EXP):
|
errno_set = true; builtin_optab = exp_optab; break;
|
errno_set = true; builtin_optab = exp_optab; break;
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
errno_set = true; builtin_optab = exp10_optab; break;
|
errno_set = true; builtin_optab = exp10_optab; break;
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
errno_set = true; builtin_optab = exp2_optab; break;
|
errno_set = true; builtin_optab = exp2_optab; break;
|
CASE_FLT_FN (BUILT_IN_EXPM1):
|
CASE_FLT_FN (BUILT_IN_EXPM1):
|
errno_set = true; builtin_optab = expm1_optab; break;
|
errno_set = true; builtin_optab = expm1_optab; break;
|
CASE_FLT_FN (BUILT_IN_LOGB):
|
CASE_FLT_FN (BUILT_IN_LOGB):
|
errno_set = true; builtin_optab = logb_optab; break;
|
errno_set = true; builtin_optab = logb_optab; break;
|
CASE_FLT_FN (BUILT_IN_ILOGB):
|
CASE_FLT_FN (BUILT_IN_ILOGB):
|
errno_set = true; builtin_optab = ilogb_optab; break;
|
errno_set = true; builtin_optab = ilogb_optab; break;
|
CASE_FLT_FN (BUILT_IN_LOG):
|
CASE_FLT_FN (BUILT_IN_LOG):
|
errno_set = true; builtin_optab = log_optab; break;
|
errno_set = true; builtin_optab = log_optab; break;
|
CASE_FLT_FN (BUILT_IN_LOG10):
|
CASE_FLT_FN (BUILT_IN_LOG10):
|
errno_set = true; builtin_optab = log10_optab; break;
|
errno_set = true; builtin_optab = log10_optab; break;
|
CASE_FLT_FN (BUILT_IN_LOG2):
|
CASE_FLT_FN (BUILT_IN_LOG2):
|
errno_set = true; builtin_optab = log2_optab; break;
|
errno_set = true; builtin_optab = log2_optab; break;
|
CASE_FLT_FN (BUILT_IN_LOG1P):
|
CASE_FLT_FN (BUILT_IN_LOG1P):
|
errno_set = true; builtin_optab = log1p_optab; break;
|
errno_set = true; builtin_optab = log1p_optab; break;
|
CASE_FLT_FN (BUILT_IN_ASIN):
|
CASE_FLT_FN (BUILT_IN_ASIN):
|
builtin_optab = asin_optab; break;
|
builtin_optab = asin_optab; break;
|
CASE_FLT_FN (BUILT_IN_ACOS):
|
CASE_FLT_FN (BUILT_IN_ACOS):
|
builtin_optab = acos_optab; break;
|
builtin_optab = acos_optab; break;
|
CASE_FLT_FN (BUILT_IN_TAN):
|
CASE_FLT_FN (BUILT_IN_TAN):
|
builtin_optab = tan_optab; break;
|
builtin_optab = tan_optab; break;
|
CASE_FLT_FN (BUILT_IN_ATAN):
|
CASE_FLT_FN (BUILT_IN_ATAN):
|
builtin_optab = atan_optab; break;
|
builtin_optab = atan_optab; break;
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
builtin_optab = floor_optab; break;
|
builtin_optab = floor_optab; break;
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
builtin_optab = ceil_optab; break;
|
builtin_optab = ceil_optab; break;
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
builtin_optab = btrunc_optab; break;
|
builtin_optab = btrunc_optab; break;
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
builtin_optab = round_optab; break;
|
builtin_optab = round_optab; break;
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
builtin_optab = nearbyint_optab; break;
|
builtin_optab = nearbyint_optab; break;
|
CASE_FLT_FN (BUILT_IN_RINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
builtin_optab = rint_optab; break;
|
builtin_optab = rint_optab; break;
|
CASE_FLT_FN (BUILT_IN_LRINT):
|
CASE_FLT_FN (BUILT_IN_LRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
builtin_optab = lrint_optab; break;
|
builtin_optab = lrint_optab; break;
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
/* Make a suitable register to place result in. */
|
/* Make a suitable register to place result in. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
|
|
if (! flag_errno_math || ! HONOR_NANS (mode))
|
if (! flag_errno_math || ! HONOR_NANS (mode))
|
errno_set = false;
|
errno_set = false;
|
|
|
/* Before working hard, check whether the instruction is available. */
|
/* Before working hard, check whether the instruction is available. */
|
if (builtin_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
|
if (builtin_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
|
{
|
{
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
|
|
/* Wrap the computation of the argument in a SAVE_EXPR, as we may
|
/* Wrap the computation of the argument in a SAVE_EXPR, as we may
|
need to expand the argument again. This way, we will not perform
|
need to expand the argument again. This way, we will not perform
|
side-effects more the once. */
|
side-effects more the once. */
|
narg = builtin_save_expr (arg);
|
narg = builtin_save_expr (arg);
|
if (narg != arg)
|
if (narg != arg)
|
{
|
{
|
arg = narg;
|
arg = narg;
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
exp = build_function_call_expr (fndecl, arglist);
|
exp = build_function_call_expr (fndecl, arglist);
|
}
|
}
|
|
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
|
|
start_sequence ();
|
start_sequence ();
|
|
|
/* Compute into TARGET.
|
/* Compute into TARGET.
|
Set TARGET to wherever the result comes back. */
|
Set TARGET to wherever the result comes back. */
|
target = expand_unop (mode, builtin_optab, op0, target, 0);
|
target = expand_unop (mode, builtin_optab, op0, target, 0);
|
|
|
if (target != 0)
|
if (target != 0)
|
{
|
{
|
if (errno_set)
|
if (errno_set)
|
expand_errno_check (exp, target);
|
expand_errno_check (exp, target);
|
|
|
/* Output the entire sequence. */
|
/* Output the entire sequence. */
|
insns = get_insns ();
|
insns = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
emit_insn (insns);
|
emit_insn (insns);
|
return target;
|
return target;
|
}
|
}
|
|
|
/* If we were unable to expand via the builtin, stop the sequence
|
/* If we were unable to expand via the builtin, stop the sequence
|
(without outputting the insns) and call to the library function
|
(without outputting the insns) and call to the library function
|
with the stabilized argument list. */
|
with the stabilized argument list. */
|
end_sequence ();
|
end_sequence ();
|
}
|
}
|
|
|
before_call = get_last_insn ();
|
before_call = get_last_insn ();
|
|
|
target = expand_call (exp, target, target == const0_rtx);
|
target = expand_call (exp, target, target == const0_rtx);
|
|
|
/* If this is a sqrt operation and we don't care about errno, try to
|
/* If this is a sqrt operation and we don't care about errno, try to
|
attach a REG_EQUAL note with a SQRT rtx to the emitted libcall.
|
attach a REG_EQUAL note with a SQRT rtx to the emitted libcall.
|
This allows the semantics of the libcall to be visible to the RTL
|
This allows the semantics of the libcall to be visible to the RTL
|
optimizers. */
|
optimizers. */
|
if (builtin_optab == sqrt_optab && !errno_set)
|
if (builtin_optab == sqrt_optab && !errno_set)
|
{
|
{
|
/* Search backwards through the insns emitted by expand_call looking
|
/* Search backwards through the insns emitted by expand_call looking
|
for the instruction with the REG_RETVAL note. */
|
for the instruction with the REG_RETVAL note. */
|
rtx last = get_last_insn ();
|
rtx last = get_last_insn ();
|
while (last != before_call)
|
while (last != before_call)
|
{
|
{
|
if (find_reg_note (last, REG_RETVAL, NULL))
|
if (find_reg_note (last, REG_RETVAL, NULL))
|
{
|
{
|
rtx note = find_reg_note (last, REG_EQUAL, NULL);
|
rtx note = find_reg_note (last, REG_EQUAL, NULL);
|
/* Check that the REQ_EQUAL note is an EXPR_LIST with
|
/* Check that the REQ_EQUAL note is an EXPR_LIST with
|
two elements, i.e. symbol_ref(sqrt) and the operand. */
|
two elements, i.e. symbol_ref(sqrt) and the operand. */
|
if (note
|
if (note
|
&& GET_CODE (note) == EXPR_LIST
|
&& GET_CODE (note) == EXPR_LIST
|
&& GET_CODE (XEXP (note, 0)) == EXPR_LIST
|
&& GET_CODE (XEXP (note, 0)) == EXPR_LIST
|
&& XEXP (XEXP (note, 0), 1) != NULL_RTX
|
&& XEXP (XEXP (note, 0), 1) != NULL_RTX
|
&& XEXP (XEXP (XEXP (note, 0), 1), 1) == NULL_RTX)
|
&& XEXP (XEXP (XEXP (note, 0), 1), 1) == NULL_RTX)
|
{
|
{
|
rtx operand = XEXP (XEXP (XEXP (note, 0), 1), 0);
|
rtx operand = XEXP (XEXP (XEXP (note, 0), 1), 0);
|
/* Check operand is a register with expected mode. */
|
/* Check operand is a register with expected mode. */
|
if (operand
|
if (operand
|
&& REG_P (operand)
|
&& REG_P (operand)
|
&& GET_MODE (operand) == mode)
|
&& GET_MODE (operand) == mode)
|
{
|
{
|
/* Replace the REG_EQUAL note with a SQRT rtx. */
|
/* Replace the REG_EQUAL note with a SQRT rtx. */
|
rtx equiv = gen_rtx_SQRT (mode, operand);
|
rtx equiv = gen_rtx_SQRT (mode, operand);
|
set_unique_reg_note (last, REG_EQUAL, equiv);
|
set_unique_reg_note (last, REG_EQUAL, equiv);
|
}
|
}
|
}
|
}
|
break;
|
break;
|
}
|
}
|
last = PREV_INSN (last);
|
last = PREV_INSN (last);
|
}
|
}
|
}
|
}
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand a call to the builtin binary math functions (pow and atan2).
|
/* Expand a call to the builtin binary math functions (pow and atan2).
|
Return 0 if a normal call should be emitted rather than expanding the
|
Return 0 if a normal call should be emitted rather than expanding the
|
function in-line. EXP is the expression that is a call to the builtin
|
function in-line. EXP is the expression that is a call to the builtin
|
function; if convenient, the result should be placed in TARGET.
|
function; if convenient, the result should be placed in TARGET.
|
SUBTARGET may be used as the target for computing one of EXP's
|
SUBTARGET may be used as the target for computing one of EXP's
|
operands. */
|
operands. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_mathfn_2 (tree exp, rtx target, rtx subtarget)
|
expand_builtin_mathfn_2 (tree exp, rtx target, rtx subtarget)
|
{
|
{
|
optab builtin_optab;
|
optab builtin_optab;
|
rtx op0, op1, insns;
|
rtx op0, op1, insns;
|
int op1_type = REAL_TYPE;
|
int op1_type = REAL_TYPE;
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arg0, arg1, temp, narg;
|
tree arg0, arg1, temp, narg;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
bool errno_set = true;
|
bool errno_set = true;
|
bool stable = true;
|
bool stable = true;
|
|
|
if ((DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LDEXP)
|
if ((DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LDEXP)
|
|| (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LDEXPF)
|
|| (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LDEXPF)
|
|| (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LDEXPL))
|
|| (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LDEXPL))
|
op1_type = INTEGER_TYPE;
|
op1_type = INTEGER_TYPE;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, op1_type, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, op1_type, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg0 = TREE_VALUE (arglist);
|
arg0 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_POW):
|
CASE_FLT_FN (BUILT_IN_POW):
|
builtin_optab = pow_optab; break;
|
builtin_optab = pow_optab; break;
|
CASE_FLT_FN (BUILT_IN_ATAN2):
|
CASE_FLT_FN (BUILT_IN_ATAN2):
|
builtin_optab = atan2_optab; break;
|
builtin_optab = atan2_optab; break;
|
CASE_FLT_FN (BUILT_IN_LDEXP):
|
CASE_FLT_FN (BUILT_IN_LDEXP):
|
builtin_optab = ldexp_optab; break;
|
builtin_optab = ldexp_optab; break;
|
CASE_FLT_FN (BUILT_IN_FMOD):
|
CASE_FLT_FN (BUILT_IN_FMOD):
|
builtin_optab = fmod_optab; break;
|
builtin_optab = fmod_optab; break;
|
CASE_FLT_FN (BUILT_IN_DREM):
|
CASE_FLT_FN (BUILT_IN_DREM):
|
builtin_optab = drem_optab; break;
|
builtin_optab = drem_optab; break;
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
/* Make a suitable register to place result in. */
|
/* Make a suitable register to place result in. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
|
|
/* Before working hard, check whether the instruction is available. */
|
/* Before working hard, check whether the instruction is available. */
|
if (builtin_optab->handlers[(int) mode].insn_code == CODE_FOR_nothing)
|
if (builtin_optab->handlers[(int) mode].insn_code == CODE_FOR_nothing)
|
return 0;
|
return 0;
|
|
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
|
|
if (! flag_errno_math || ! HONOR_NANS (mode))
|
if (! flag_errno_math || ! HONOR_NANS (mode))
|
errno_set = false;
|
errno_set = false;
|
|
|
/* Always stabilize the argument list. */
|
/* Always stabilize the argument list. */
|
narg = builtin_save_expr (arg1);
|
narg = builtin_save_expr (arg1);
|
if (narg != arg1)
|
if (narg != arg1)
|
{
|
{
|
arg1 = narg;
|
arg1 = narg;
|
temp = build_tree_list (NULL_TREE, narg);
|
temp = build_tree_list (NULL_TREE, narg);
|
stable = false;
|
stable = false;
|
}
|
}
|
else
|
else
|
temp = TREE_CHAIN (arglist);
|
temp = TREE_CHAIN (arglist);
|
|
|
narg = builtin_save_expr (arg0);
|
narg = builtin_save_expr (arg0);
|
if (narg != arg0)
|
if (narg != arg0)
|
{
|
{
|
arg0 = narg;
|
arg0 = narg;
|
arglist = tree_cons (NULL_TREE, narg, temp);
|
arglist = tree_cons (NULL_TREE, narg, temp);
|
stable = false;
|
stable = false;
|
}
|
}
|
else if (! stable)
|
else if (! stable)
|
arglist = tree_cons (NULL_TREE, arg0, temp);
|
arglist = tree_cons (NULL_TREE, arg0, temp);
|
|
|
if (! stable)
|
if (! stable)
|
exp = build_function_call_expr (fndecl, arglist);
|
exp = build_function_call_expr (fndecl, arglist);
|
|
|
op0 = expand_expr (arg0, subtarget, VOIDmode, EXPAND_NORMAL);
|
op0 = expand_expr (arg0, subtarget, VOIDmode, EXPAND_NORMAL);
|
op1 = expand_normal (arg1);
|
op1 = expand_normal (arg1);
|
|
|
start_sequence ();
|
start_sequence ();
|
|
|
/* Compute into TARGET.
|
/* Compute into TARGET.
|
Set TARGET to wherever the result comes back. */
|
Set TARGET to wherever the result comes back. */
|
target = expand_binop (mode, builtin_optab, op0, op1,
|
target = expand_binop (mode, builtin_optab, op0, op1,
|
target, 0, OPTAB_DIRECT);
|
target, 0, OPTAB_DIRECT);
|
|
|
/* If we were unable to expand via the builtin, stop the sequence
|
/* If we were unable to expand via the builtin, stop the sequence
|
(without outputting the insns) and call to the library function
|
(without outputting the insns) and call to the library function
|
with the stabilized argument list. */
|
with the stabilized argument list. */
|
if (target == 0)
|
if (target == 0)
|
{
|
{
|
end_sequence ();
|
end_sequence ();
|
return expand_call (exp, target, target == const0_rtx);
|
return expand_call (exp, target, target == const0_rtx);
|
}
|
}
|
|
|
if (errno_set)
|
if (errno_set)
|
expand_errno_check (exp, target);
|
expand_errno_check (exp, target);
|
|
|
/* Output the entire sequence. */
|
/* Output the entire sequence. */
|
insns = get_insns ();
|
insns = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
emit_insn (insns);
|
emit_insn (insns);
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand a call to the builtin sin and cos math functions.
|
/* Expand a call to the builtin sin and cos math functions.
|
Return 0 if a normal call should be emitted rather than expanding the
|
Return 0 if a normal call should be emitted rather than expanding the
|
function in-line. EXP is the expression that is a call to the builtin
|
function in-line. EXP is the expression that is a call to the builtin
|
function; if convenient, the result should be placed in TARGET.
|
function; if convenient, the result should be placed in TARGET.
|
SUBTARGET may be used as the target for computing one of EXP's
|
SUBTARGET may be used as the target for computing one of EXP's
|
operands. */
|
operands. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_mathfn_3 (tree exp, rtx target, rtx subtarget)
|
expand_builtin_mathfn_3 (tree exp, rtx target, rtx subtarget)
|
{
|
{
|
optab builtin_optab;
|
optab builtin_optab;
|
rtx op0, insns;
|
rtx op0, insns;
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
enum machine_mode mode;
|
enum machine_mode mode;
|
tree arg, narg;
|
tree arg, narg;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_COS):
|
CASE_FLT_FN (BUILT_IN_COS):
|
builtin_optab = sincos_optab; break;
|
builtin_optab = sincos_optab; break;
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
/* Make a suitable register to place result in. */
|
/* Make a suitable register to place result in. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
|
|
/* Check if sincos insn is available, otherwise fallback
|
/* Check if sincos insn is available, otherwise fallback
|
to sin or cos insn. */
|
to sin or cos insn. */
|
if (builtin_optab->handlers[(int) mode].insn_code == CODE_FOR_nothing) {
|
if (builtin_optab->handlers[(int) mode].insn_code == CODE_FOR_nothing) {
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_SIN):
|
builtin_optab = sin_optab; break;
|
builtin_optab = sin_optab; break;
|
CASE_FLT_FN (BUILT_IN_COS):
|
CASE_FLT_FN (BUILT_IN_COS):
|
builtin_optab = cos_optab; break;
|
builtin_optab = cos_optab; break;
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
}
|
}
|
|
|
/* Before working hard, check whether the instruction is available. */
|
/* Before working hard, check whether the instruction is available. */
|
if (builtin_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
|
if (builtin_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
|
{
|
{
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
|
|
/* Wrap the computation of the argument in a SAVE_EXPR, as we may
|
/* Wrap the computation of the argument in a SAVE_EXPR, as we may
|
need to expand the argument again. This way, we will not perform
|
need to expand the argument again. This way, we will not perform
|
side-effects more the once. */
|
side-effects more the once. */
|
narg = save_expr (arg);
|
narg = save_expr (arg);
|
if (narg != arg)
|
if (narg != arg)
|
{
|
{
|
arg = narg;
|
arg = narg;
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
exp = build_function_call_expr (fndecl, arglist);
|
exp = build_function_call_expr (fndecl, arglist);
|
}
|
}
|
|
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
|
|
start_sequence ();
|
start_sequence ();
|
|
|
/* Compute into TARGET.
|
/* Compute into TARGET.
|
Set TARGET to wherever the result comes back. */
|
Set TARGET to wherever the result comes back. */
|
if (builtin_optab == sincos_optab)
|
if (builtin_optab == sincos_optab)
|
{
|
{
|
int result;
|
int result;
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_SIN):
|
result = expand_twoval_unop (builtin_optab, op0, 0, target, 0);
|
result = expand_twoval_unop (builtin_optab, op0, 0, target, 0);
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_COS):
|
CASE_FLT_FN (BUILT_IN_COS):
|
result = expand_twoval_unop (builtin_optab, op0, target, 0, 0);
|
result = expand_twoval_unop (builtin_optab, op0, target, 0, 0);
|
break;
|
break;
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
gcc_assert (result);
|
gcc_assert (result);
|
}
|
}
|
else
|
else
|
{
|
{
|
target = expand_unop (mode, builtin_optab, op0, target, 0);
|
target = expand_unop (mode, builtin_optab, op0, target, 0);
|
}
|
}
|
|
|
if (target != 0)
|
if (target != 0)
|
{
|
{
|
/* Output the entire sequence. */
|
/* Output the entire sequence. */
|
insns = get_insns ();
|
insns = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
emit_insn (insns);
|
emit_insn (insns);
|
return target;
|
return target;
|
}
|
}
|
|
|
/* If we were unable to expand via the builtin, stop the sequence
|
/* If we were unable to expand via the builtin, stop the sequence
|
(without outputting the insns) and call to the library function
|
(without outputting the insns) and call to the library function
|
with the stabilized argument list. */
|
with the stabilized argument list. */
|
end_sequence ();
|
end_sequence ();
|
}
|
}
|
|
|
target = expand_call (exp, target, target == const0_rtx);
|
target = expand_call (exp, target, target == const0_rtx);
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand a call to the builtin sincos math function.
|
/* Expand a call to the builtin sincos math function.
|
Return 0 if a normal call should be emitted rather than expanding the
|
Return 0 if a normal call should be emitted rather than expanding the
|
function in-line. EXP is the expression that is a call to the builtin
|
function in-line. EXP is the expression that is a call to the builtin
|
function. */
|
function. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_sincos (tree exp)
|
expand_builtin_sincos (tree exp)
|
{
|
{
|
rtx op0, op1, op2, target1, target2;
|
rtx op0, op1, op2, target1, target2;
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
enum machine_mode mode;
|
enum machine_mode mode;
|
tree arg, sinp, cosp;
|
tree arg, sinp, cosp;
|
int result;
|
int result;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE,
|
if (!validate_arglist (arglist, REAL_TYPE,
|
POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
sinp = TREE_VALUE (TREE_CHAIN (arglist));
|
sinp = TREE_VALUE (TREE_CHAIN (arglist));
|
cosp = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
cosp = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* Make a suitable register to place result in. */
|
/* Make a suitable register to place result in. */
|
mode = TYPE_MODE (TREE_TYPE (arg));
|
mode = TYPE_MODE (TREE_TYPE (arg));
|
|
|
/* Check if sincos insn is available, otherwise emit the call. */
|
/* Check if sincos insn is available, otherwise emit the call. */
|
if (sincos_optab->handlers[(int) mode].insn_code == CODE_FOR_nothing)
|
if (sincos_optab->handlers[(int) mode].insn_code == CODE_FOR_nothing)
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
target1 = gen_reg_rtx (mode);
|
target1 = gen_reg_rtx (mode);
|
target2 = gen_reg_rtx (mode);
|
target2 = gen_reg_rtx (mode);
|
|
|
op0 = expand_normal (arg);
|
op0 = expand_normal (arg);
|
op1 = expand_normal (build_fold_indirect_ref (sinp));
|
op1 = expand_normal (build_fold_indirect_ref (sinp));
|
op2 = expand_normal (build_fold_indirect_ref (cosp));
|
op2 = expand_normal (build_fold_indirect_ref (cosp));
|
|
|
/* Compute into target1 and target2.
|
/* Compute into target1 and target2.
|
Set TARGET to wherever the result comes back. */
|
Set TARGET to wherever the result comes back. */
|
result = expand_twoval_unop (sincos_optab, op0, target2, target1, 0);
|
result = expand_twoval_unop (sincos_optab, op0, target2, target1, 0);
|
gcc_assert (result);
|
gcc_assert (result);
|
|
|
/* Move target1 and target2 to the memory locations indicated
|
/* Move target1 and target2 to the memory locations indicated
|
by op1 and op2. */
|
by op1 and op2. */
|
emit_move_insn (op1, target1);
|
emit_move_insn (op1, target1);
|
emit_move_insn (op2, target2);
|
emit_move_insn (op2, target2);
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* Expand a call to one of the builtin rounding functions (lfloor).
|
/* Expand a call to one of the builtin rounding functions (lfloor).
|
If expanding via optab fails, lower expression to (int)(floor(x)).
|
If expanding via optab fails, lower expression to (int)(floor(x)).
|
EXP is the expression that is a call to the builtin function;
|
EXP is the expression that is a call to the builtin function;
|
if convenient, the result should be placed in TARGET. SUBTARGET may
|
if convenient, the result should be placed in TARGET. SUBTARGET may
|
be used as the target for computing one of EXP's operands. */
|
be used as the target for computing one of EXP's operands. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_int_roundingfn (tree exp, rtx target, rtx subtarget)
|
expand_builtin_int_roundingfn (tree exp, rtx target, rtx subtarget)
|
{
|
{
|
optab builtin_optab;
|
optab builtin_optab;
|
rtx op0, insns, tmp;
|
rtx op0, insns, tmp;
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
enum built_in_function fallback_fn;
|
enum built_in_function fallback_fn;
|
tree fallback_fndecl;
|
tree fallback_fndecl;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
tree arg, narg;
|
tree arg, narg;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
gcc_unreachable ();
|
gcc_unreachable ();
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
builtin_optab = lceil_optab;
|
builtin_optab = lceil_optab;
|
fallback_fn = BUILT_IN_CEIL;
|
fallback_fn = BUILT_IN_CEIL;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
builtin_optab = lfloor_optab;
|
builtin_optab = lfloor_optab;
|
fallback_fn = BUILT_IN_FLOOR;
|
fallback_fn = BUILT_IN_FLOOR;
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
/* Make a suitable register to place result in. */
|
/* Make a suitable register to place result in. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
|
|
/* Before working hard, check whether the instruction is available. */
|
/* Before working hard, check whether the instruction is available. */
|
if (builtin_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
|
if (builtin_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
|
{
|
{
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
|
|
/* Wrap the computation of the argument in a SAVE_EXPR, as we may
|
/* Wrap the computation of the argument in a SAVE_EXPR, as we may
|
need to expand the argument again. This way, we will not perform
|
need to expand the argument again. This way, we will not perform
|
side-effects more the once. */
|
side-effects more the once. */
|
narg = builtin_save_expr (arg);
|
narg = builtin_save_expr (arg);
|
if (narg != arg)
|
if (narg != arg)
|
{
|
{
|
arg = narg;
|
arg = narg;
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
exp = build_function_call_expr (fndecl, arglist);
|
exp = build_function_call_expr (fndecl, arglist);
|
}
|
}
|
|
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
|
|
start_sequence ();
|
start_sequence ();
|
|
|
/* Compute into TARGET.
|
/* Compute into TARGET.
|
Set TARGET to wherever the result comes back. */
|
Set TARGET to wherever the result comes back. */
|
target = expand_unop (mode, builtin_optab, op0, target, 0);
|
target = expand_unop (mode, builtin_optab, op0, target, 0);
|
|
|
if (target != 0)
|
if (target != 0)
|
{
|
{
|
/* Output the entire sequence. */
|
/* Output the entire sequence. */
|
insns = get_insns ();
|
insns = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
emit_insn (insns);
|
emit_insn (insns);
|
return target;
|
return target;
|
}
|
}
|
|
|
/* If we were unable to expand via the builtin, stop the sequence
|
/* If we were unable to expand via the builtin, stop the sequence
|
(without outputting the insns). */
|
(without outputting the insns). */
|
end_sequence ();
|
end_sequence ();
|
}
|
}
|
|
|
/* Fall back to floating point rounding optab. */
|
/* Fall back to floating point rounding optab. */
|
fallback_fndecl = mathfn_built_in (TREE_TYPE (arg), fallback_fn);
|
fallback_fndecl = mathfn_built_in (TREE_TYPE (arg), fallback_fn);
|
/* We shouldn't get here on targets without TARGET_C99_FUNCTIONS.
|
/* We shouldn't get here on targets without TARGET_C99_FUNCTIONS.
|
??? Perhaps convert (int)floorf(x) into (int)floor((double)x). */
|
??? Perhaps convert (int)floorf(x) into (int)floor((double)x). */
|
gcc_assert (fallback_fndecl != NULL_TREE);
|
gcc_assert (fallback_fndecl != NULL_TREE);
|
exp = build_function_call_expr (fallback_fndecl, arglist);
|
exp = build_function_call_expr (fallback_fndecl, arglist);
|
|
|
tmp = expand_normal (exp);
|
tmp = expand_normal (exp);
|
|
|
/* Truncate the result of floating point optab to integer
|
/* Truncate the result of floating point optab to integer
|
via expand_fix (). */
|
via expand_fix (). */
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
expand_fix (target, tmp, 0);
|
expand_fix (target, tmp, 0);
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* To evaluate powi(x,n), the floating point value x raised to the
|
/* To evaluate powi(x,n), the floating point value x raised to the
|
constant integer exponent n, we use a hybrid algorithm that
|
constant integer exponent n, we use a hybrid algorithm that
|
combines the "window method" with look-up tables. For an
|
combines the "window method" with look-up tables. For an
|
introduction to exponentiation algorithms and "addition chains",
|
introduction to exponentiation algorithms and "addition chains",
|
see section 4.6.3, "Evaluation of Powers" of Donald E. Knuth,
|
see section 4.6.3, "Evaluation of Powers" of Donald E. Knuth,
|
"Seminumerical Algorithms", Vol. 2, "The Art of Computer Programming",
|
"Seminumerical Algorithms", Vol. 2, "The Art of Computer Programming",
|
3rd Edition, 1998, and Daniel M. Gordon, "A Survey of Fast Exponentiation
|
3rd Edition, 1998, and Daniel M. Gordon, "A Survey of Fast Exponentiation
|
Methods", Journal of Algorithms, Vol. 27, pp. 129-146, 1998. */
|
Methods", Journal of Algorithms, Vol. 27, pp. 129-146, 1998. */
|
|
|
/* Provide a default value for POWI_MAX_MULTS, the maximum number of
|
/* Provide a default value for POWI_MAX_MULTS, the maximum number of
|
multiplications to inline before calling the system library's pow
|
multiplications to inline before calling the system library's pow
|
function. powi(x,n) requires at worst 2*bits(n)-2 multiplications,
|
function. powi(x,n) requires at worst 2*bits(n)-2 multiplications,
|
so this default never requires calling pow, powf or powl. */
|
so this default never requires calling pow, powf or powl. */
|
|
|
#ifndef POWI_MAX_MULTS
|
#ifndef POWI_MAX_MULTS
|
#define POWI_MAX_MULTS (2*HOST_BITS_PER_WIDE_INT-2)
|
#define POWI_MAX_MULTS (2*HOST_BITS_PER_WIDE_INT-2)
|
#endif
|
#endif
|
|
|
/* The size of the "optimal power tree" lookup table. All
|
/* The size of the "optimal power tree" lookup table. All
|
exponents less than this value are simply looked up in the
|
exponents less than this value are simply looked up in the
|
powi_table below. This threshold is also used to size the
|
powi_table below. This threshold is also used to size the
|
cache of pseudo registers that hold intermediate results. */
|
cache of pseudo registers that hold intermediate results. */
|
#define POWI_TABLE_SIZE 256
|
#define POWI_TABLE_SIZE 256
|
|
|
/* The size, in bits of the window, used in the "window method"
|
/* The size, in bits of the window, used in the "window method"
|
exponentiation algorithm. This is equivalent to a radix of
|
exponentiation algorithm. This is equivalent to a radix of
|
(1<<POWI_WINDOW_SIZE) in the corresponding "m-ary method". */
|
(1<<POWI_WINDOW_SIZE) in the corresponding "m-ary method". */
|
#define POWI_WINDOW_SIZE 3
|
#define POWI_WINDOW_SIZE 3
|
|
|
/* The following table is an efficient representation of an
|
/* The following table is an efficient representation of an
|
"optimal power tree". For each value, i, the corresponding
|
"optimal power tree". For each value, i, the corresponding
|
value, j, in the table states than an optimal evaluation
|
value, j, in the table states than an optimal evaluation
|
sequence for calculating pow(x,i) can be found by evaluating
|
sequence for calculating pow(x,i) can be found by evaluating
|
pow(x,j)*pow(x,i-j). An optimal power tree for the first
|
pow(x,j)*pow(x,i-j). An optimal power tree for the first
|
100 integers is given in Knuth's "Seminumerical algorithms". */
|
100 integers is given in Knuth's "Seminumerical algorithms". */
|
|
|
static const unsigned char powi_table[POWI_TABLE_SIZE] =
|
static const unsigned char powi_table[POWI_TABLE_SIZE] =
|
{
|
{
|
0, 1, 1, 2, 2, 3, 3, 4, /* 0 - 7 */
|
0, 1, 1, 2, 2, 3, 3, 4, /* 0 - 7 */
|
4, 6, 5, 6, 6, 10, 7, 9, /* 8 - 15 */
|
4, 6, 5, 6, 6, 10, 7, 9, /* 8 - 15 */
|
8, 16, 9, 16, 10, 12, 11, 13, /* 16 - 23 */
|
8, 16, 9, 16, 10, 12, 11, 13, /* 16 - 23 */
|
12, 17, 13, 18, 14, 24, 15, 26, /* 24 - 31 */
|
12, 17, 13, 18, 14, 24, 15, 26, /* 24 - 31 */
|
16, 17, 17, 19, 18, 33, 19, 26, /* 32 - 39 */
|
16, 17, 17, 19, 18, 33, 19, 26, /* 32 - 39 */
|
20, 25, 21, 40, 22, 27, 23, 44, /* 40 - 47 */
|
20, 25, 21, 40, 22, 27, 23, 44, /* 40 - 47 */
|
24, 32, 25, 34, 26, 29, 27, 44, /* 48 - 55 */
|
24, 32, 25, 34, 26, 29, 27, 44, /* 48 - 55 */
|
28, 31, 29, 34, 30, 60, 31, 36, /* 56 - 63 */
|
28, 31, 29, 34, 30, 60, 31, 36, /* 56 - 63 */
|
32, 64, 33, 34, 34, 46, 35, 37, /* 64 - 71 */
|
32, 64, 33, 34, 34, 46, 35, 37, /* 64 - 71 */
|
36, 65, 37, 50, 38, 48, 39, 69, /* 72 - 79 */
|
36, 65, 37, 50, 38, 48, 39, 69, /* 72 - 79 */
|
40, 49, 41, 43, 42, 51, 43, 58, /* 80 - 87 */
|
40, 49, 41, 43, 42, 51, 43, 58, /* 80 - 87 */
|
44, 64, 45, 47, 46, 59, 47, 76, /* 88 - 95 */
|
44, 64, 45, 47, 46, 59, 47, 76, /* 88 - 95 */
|
48, 65, 49, 66, 50, 67, 51, 66, /* 96 - 103 */
|
48, 65, 49, 66, 50, 67, 51, 66, /* 96 - 103 */
|
52, 70, 53, 74, 54, 104, 55, 74, /* 104 - 111 */
|
52, 70, 53, 74, 54, 104, 55, 74, /* 104 - 111 */
|
56, 64, 57, 69, 58, 78, 59, 68, /* 112 - 119 */
|
56, 64, 57, 69, 58, 78, 59, 68, /* 112 - 119 */
|
60, 61, 61, 80, 62, 75, 63, 68, /* 120 - 127 */
|
60, 61, 61, 80, 62, 75, 63, 68, /* 120 - 127 */
|
64, 65, 65, 128, 66, 129, 67, 90, /* 128 - 135 */
|
64, 65, 65, 128, 66, 129, 67, 90, /* 128 - 135 */
|
68, 73, 69, 131, 70, 94, 71, 88, /* 136 - 143 */
|
68, 73, 69, 131, 70, 94, 71, 88, /* 136 - 143 */
|
72, 128, 73, 98, 74, 132, 75, 121, /* 144 - 151 */
|
72, 128, 73, 98, 74, 132, 75, 121, /* 144 - 151 */
|
76, 102, 77, 124, 78, 132, 79, 106, /* 152 - 159 */
|
76, 102, 77, 124, 78, 132, 79, 106, /* 152 - 159 */
|
80, 97, 81, 160, 82, 99, 83, 134, /* 160 - 167 */
|
80, 97, 81, 160, 82, 99, 83, 134, /* 160 - 167 */
|
84, 86, 85, 95, 86, 160, 87, 100, /* 168 - 175 */
|
84, 86, 85, 95, 86, 160, 87, 100, /* 168 - 175 */
|
88, 113, 89, 98, 90, 107, 91, 122, /* 176 - 183 */
|
88, 113, 89, 98, 90, 107, 91, 122, /* 176 - 183 */
|
92, 111, 93, 102, 94, 126, 95, 150, /* 184 - 191 */
|
92, 111, 93, 102, 94, 126, 95, 150, /* 184 - 191 */
|
96, 128, 97, 130, 98, 133, 99, 195, /* 192 - 199 */
|
96, 128, 97, 130, 98, 133, 99, 195, /* 192 - 199 */
|
100, 128, 101, 123, 102, 164, 103, 138, /* 200 - 207 */
|
100, 128, 101, 123, 102, 164, 103, 138, /* 200 - 207 */
|
104, 145, 105, 146, 106, 109, 107, 149, /* 208 - 215 */
|
104, 145, 105, 146, 106, 109, 107, 149, /* 208 - 215 */
|
108, 200, 109, 146, 110, 170, 111, 157, /* 216 - 223 */
|
108, 200, 109, 146, 110, 170, 111, 157, /* 216 - 223 */
|
112, 128, 113, 130, 114, 182, 115, 132, /* 224 - 231 */
|
112, 128, 113, 130, 114, 182, 115, 132, /* 224 - 231 */
|
116, 200, 117, 132, 118, 158, 119, 206, /* 232 - 239 */
|
116, 200, 117, 132, 118, 158, 119, 206, /* 232 - 239 */
|
120, 240, 121, 162, 122, 147, 123, 152, /* 240 - 247 */
|
120, 240, 121, 162, 122, 147, 123, 152, /* 240 - 247 */
|
124, 166, 125, 214, 126, 138, 127, 153, /* 248 - 255 */
|
124, 166, 125, 214, 126, 138, 127, 153, /* 248 - 255 */
|
};
|
};
|
|
|
|
|
/* Return the number of multiplications required to calculate
|
/* Return the number of multiplications required to calculate
|
powi(x,n) where n is less than POWI_TABLE_SIZE. This is a
|
powi(x,n) where n is less than POWI_TABLE_SIZE. This is a
|
subroutine of powi_cost. CACHE is an array indicating
|
subroutine of powi_cost. CACHE is an array indicating
|
which exponents have already been calculated. */
|
which exponents have already been calculated. */
|
|
|
static int
|
static int
|
powi_lookup_cost (unsigned HOST_WIDE_INT n, bool *cache)
|
powi_lookup_cost (unsigned HOST_WIDE_INT n, bool *cache)
|
{
|
{
|
/* If we've already calculated this exponent, then this evaluation
|
/* If we've already calculated this exponent, then this evaluation
|
doesn't require any additional multiplications. */
|
doesn't require any additional multiplications. */
|
if (cache[n])
|
if (cache[n])
|
return 0;
|
return 0;
|
|
|
cache[n] = true;
|
cache[n] = true;
|
return powi_lookup_cost (n - powi_table[n], cache)
|
return powi_lookup_cost (n - powi_table[n], cache)
|
+ powi_lookup_cost (powi_table[n], cache) + 1;
|
+ powi_lookup_cost (powi_table[n], cache) + 1;
|
}
|
}
|
|
|
/* Return the number of multiplications required to calculate
|
/* Return the number of multiplications required to calculate
|
powi(x,n) for an arbitrary x, given the exponent N. This
|
powi(x,n) for an arbitrary x, given the exponent N. This
|
function needs to be kept in sync with expand_powi below. */
|
function needs to be kept in sync with expand_powi below. */
|
|
|
static int
|
static int
|
powi_cost (HOST_WIDE_INT n)
|
powi_cost (HOST_WIDE_INT n)
|
{
|
{
|
bool cache[POWI_TABLE_SIZE];
|
bool cache[POWI_TABLE_SIZE];
|
unsigned HOST_WIDE_INT digit;
|
unsigned HOST_WIDE_INT digit;
|
unsigned HOST_WIDE_INT val;
|
unsigned HOST_WIDE_INT val;
|
int result;
|
int result;
|
|
|
if (n == 0)
|
if (n == 0)
|
return 0;
|
return 0;
|
|
|
/* Ignore the reciprocal when calculating the cost. */
|
/* Ignore the reciprocal when calculating the cost. */
|
val = (n < 0) ? -n : n;
|
val = (n < 0) ? -n : n;
|
|
|
/* Initialize the exponent cache. */
|
/* Initialize the exponent cache. */
|
memset (cache, 0, POWI_TABLE_SIZE * sizeof (bool));
|
memset (cache, 0, POWI_TABLE_SIZE * sizeof (bool));
|
cache[1] = true;
|
cache[1] = true;
|
|
|
result = 0;
|
result = 0;
|
|
|
while (val >= POWI_TABLE_SIZE)
|
while (val >= POWI_TABLE_SIZE)
|
{
|
{
|
if (val & 1)
|
if (val & 1)
|
{
|
{
|
digit = val & ((1 << POWI_WINDOW_SIZE) - 1);
|
digit = val & ((1 << POWI_WINDOW_SIZE) - 1);
|
result += powi_lookup_cost (digit, cache)
|
result += powi_lookup_cost (digit, cache)
|
+ POWI_WINDOW_SIZE + 1;
|
+ POWI_WINDOW_SIZE + 1;
|
val >>= POWI_WINDOW_SIZE;
|
val >>= POWI_WINDOW_SIZE;
|
}
|
}
|
else
|
else
|
{
|
{
|
val >>= 1;
|
val >>= 1;
|
result++;
|
result++;
|
}
|
}
|
}
|
}
|
|
|
return result + powi_lookup_cost (val, cache);
|
return result + powi_lookup_cost (val, cache);
|
}
|
}
|
|
|
/* Recursive subroutine of expand_powi. This function takes the array,
|
/* Recursive subroutine of expand_powi. This function takes the array,
|
CACHE, of already calculated exponents and an exponent N and returns
|
CACHE, of already calculated exponents and an exponent N and returns
|
an RTX that corresponds to CACHE[1]**N, as calculated in mode MODE. */
|
an RTX that corresponds to CACHE[1]**N, as calculated in mode MODE. */
|
|
|
static rtx
|
static rtx
|
expand_powi_1 (enum machine_mode mode, unsigned HOST_WIDE_INT n, rtx *cache)
|
expand_powi_1 (enum machine_mode mode, unsigned HOST_WIDE_INT n, rtx *cache)
|
{
|
{
|
unsigned HOST_WIDE_INT digit;
|
unsigned HOST_WIDE_INT digit;
|
rtx target, result;
|
rtx target, result;
|
rtx op0, op1;
|
rtx op0, op1;
|
|
|
if (n < POWI_TABLE_SIZE)
|
if (n < POWI_TABLE_SIZE)
|
{
|
{
|
if (cache[n])
|
if (cache[n])
|
return cache[n];
|
return cache[n];
|
|
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
cache[n] = target;
|
cache[n] = target;
|
|
|
op0 = expand_powi_1 (mode, n - powi_table[n], cache);
|
op0 = expand_powi_1 (mode, n - powi_table[n], cache);
|
op1 = expand_powi_1 (mode, powi_table[n], cache);
|
op1 = expand_powi_1 (mode, powi_table[n], cache);
|
}
|
}
|
else if (n & 1)
|
else if (n & 1)
|
{
|
{
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
digit = n & ((1 << POWI_WINDOW_SIZE) - 1);
|
digit = n & ((1 << POWI_WINDOW_SIZE) - 1);
|
op0 = expand_powi_1 (mode, n - digit, cache);
|
op0 = expand_powi_1 (mode, n - digit, cache);
|
op1 = expand_powi_1 (mode, digit, cache);
|
op1 = expand_powi_1 (mode, digit, cache);
|
}
|
}
|
else
|
else
|
{
|
{
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
op0 = expand_powi_1 (mode, n >> 1, cache);
|
op0 = expand_powi_1 (mode, n >> 1, cache);
|
op1 = op0;
|
op1 = op0;
|
}
|
}
|
|
|
result = expand_mult (mode, op0, op1, target, 0);
|
result = expand_mult (mode, op0, op1, target, 0);
|
if (result != target)
|
if (result != target)
|
emit_move_insn (target, result);
|
emit_move_insn (target, result);
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand the RTL to evaluate powi(x,n) in mode MODE. X is the
|
/* Expand the RTL to evaluate powi(x,n) in mode MODE. X is the
|
floating point operand in mode MODE, and N is the exponent. This
|
floating point operand in mode MODE, and N is the exponent. This
|
function needs to be kept in sync with powi_cost above. */
|
function needs to be kept in sync with powi_cost above. */
|
|
|
static rtx
|
static rtx
|
expand_powi (rtx x, enum machine_mode mode, HOST_WIDE_INT n)
|
expand_powi (rtx x, enum machine_mode mode, HOST_WIDE_INT n)
|
{
|
{
|
unsigned HOST_WIDE_INT val;
|
unsigned HOST_WIDE_INT val;
|
rtx cache[POWI_TABLE_SIZE];
|
rtx cache[POWI_TABLE_SIZE];
|
rtx result;
|
rtx result;
|
|
|
if (n == 0)
|
if (n == 0)
|
return CONST1_RTX (mode);
|
return CONST1_RTX (mode);
|
|
|
val = (n < 0) ? -n : n;
|
val = (n < 0) ? -n : n;
|
|
|
memset (cache, 0, sizeof (cache));
|
memset (cache, 0, sizeof (cache));
|
cache[1] = x;
|
cache[1] = x;
|
|
|
result = expand_powi_1 (mode, (n < 0) ? -n : n, cache);
|
result = expand_powi_1 (mode, (n < 0) ? -n : n, cache);
|
|
|
/* If the original exponent was negative, reciprocate the result. */
|
/* If the original exponent was negative, reciprocate the result. */
|
if (n < 0)
|
if (n < 0)
|
result = expand_binop (mode, sdiv_optab, CONST1_RTX (mode),
|
result = expand_binop (mode, sdiv_optab, CONST1_RTX (mode),
|
result, NULL_RTX, 0, OPTAB_LIB_WIDEN);
|
result, NULL_RTX, 0, OPTAB_LIB_WIDEN);
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Expand a call to the pow built-in mathematical function. Return 0 if
|
/* Expand a call to the pow built-in mathematical function. Return 0 if
|
a normal call should be emitted rather than expanding the function
|
a normal call should be emitted rather than expanding the function
|
in-line. EXP is the expression that is a call to the builtin
|
in-line. EXP is the expression that is a call to the builtin
|
function; if convenient, the result should be placed in TARGET. */
|
function; if convenient, the result should be placed in TARGET. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_pow (tree exp, rtx target, rtx subtarget)
|
expand_builtin_pow (tree exp, rtx target, rtx subtarget)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arg0, arg1;
|
tree arg0, arg1;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg0 = TREE_VALUE (arglist);
|
arg0 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
if (TREE_CODE (arg1) == REAL_CST
|
if (TREE_CODE (arg1) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg1))
|
&& ! TREE_CONSTANT_OVERFLOW (arg1))
|
{
|
{
|
REAL_VALUE_TYPE cint;
|
REAL_VALUE_TYPE cint;
|
REAL_VALUE_TYPE c;
|
REAL_VALUE_TYPE c;
|
HOST_WIDE_INT n;
|
HOST_WIDE_INT n;
|
|
|
c = TREE_REAL_CST (arg1);
|
c = TREE_REAL_CST (arg1);
|
n = real_to_integer (&c);
|
n = real_to_integer (&c);
|
real_from_integer (&cint, VOIDmode, n, n < 0 ? -1 : 0, 0);
|
real_from_integer (&cint, VOIDmode, n, n < 0 ? -1 : 0, 0);
|
if (real_identical (&c, &cint))
|
if (real_identical (&c, &cint))
|
{
|
{
|
/* If the exponent is -1, 0, 1 or 2, then expand_powi is exact.
|
/* If the exponent is -1, 0, 1 or 2, then expand_powi is exact.
|
Otherwise, check the number of multiplications required.
|
Otherwise, check the number of multiplications required.
|
Note that pow never sets errno for an integer exponent. */
|
Note that pow never sets errno for an integer exponent. */
|
if ((n >= -1 && n <= 2)
|
if ((n >= -1 && n <= 2)
|
|| (flag_unsafe_math_optimizations
|
|| (flag_unsafe_math_optimizations
|
&& ! optimize_size
|
&& ! optimize_size
|
&& powi_cost (n) <= POWI_MAX_MULTS))
|
&& powi_cost (n) <= POWI_MAX_MULTS))
|
{
|
{
|
enum machine_mode mode = TYPE_MODE (TREE_TYPE (exp));
|
enum machine_mode mode = TYPE_MODE (TREE_TYPE (exp));
|
rtx op = expand_expr (arg0, subtarget, VOIDmode, 0);
|
rtx op = expand_expr (arg0, subtarget, VOIDmode, 0);
|
op = force_reg (mode, op);
|
op = force_reg (mode, op);
|
return expand_powi (op, mode, n);
|
return expand_powi (op, mode, n);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (! flag_unsafe_math_optimizations)
|
if (! flag_unsafe_math_optimizations)
|
return NULL_RTX;
|
return NULL_RTX;
|
return expand_builtin_mathfn_2 (exp, target, subtarget);
|
return expand_builtin_mathfn_2 (exp, target, subtarget);
|
}
|
}
|
|
|
/* Expand a call to the powi built-in mathematical function. Return 0 if
|
/* Expand a call to the powi built-in mathematical function. Return 0 if
|
a normal call should be emitted rather than expanding the function
|
a normal call should be emitted rather than expanding the function
|
in-line. EXP is the expression that is a call to the builtin
|
in-line. EXP is the expression that is a call to the builtin
|
function; if convenient, the result should be placed in TARGET. */
|
function; if convenient, the result should be placed in TARGET. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_powi (tree exp, rtx target, rtx subtarget)
|
expand_builtin_powi (tree exp, rtx target, rtx subtarget)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arg0, arg1;
|
tree arg0, arg1;
|
rtx op0, op1;
|
rtx op0, op1;
|
enum machine_mode mode;
|
enum machine_mode mode;
|
enum machine_mode mode2;
|
enum machine_mode mode2;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg0 = TREE_VALUE (arglist);
|
arg0 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
|
|
/* Handle constant power. */
|
/* Handle constant power. */
|
|
|
if (TREE_CODE (arg1) == INTEGER_CST
|
if (TREE_CODE (arg1) == INTEGER_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg1))
|
&& ! TREE_CONSTANT_OVERFLOW (arg1))
|
{
|
{
|
HOST_WIDE_INT n = TREE_INT_CST_LOW (arg1);
|
HOST_WIDE_INT n = TREE_INT_CST_LOW (arg1);
|
|
|
/* If the exponent is -1, 0, 1 or 2, then expand_powi is exact.
|
/* If the exponent is -1, 0, 1 or 2, then expand_powi is exact.
|
Otherwise, check the number of multiplications required. */
|
Otherwise, check the number of multiplications required. */
|
if ((TREE_INT_CST_HIGH (arg1) == 0
|
if ((TREE_INT_CST_HIGH (arg1) == 0
|
|| TREE_INT_CST_HIGH (arg1) == -1)
|
|| TREE_INT_CST_HIGH (arg1) == -1)
|
&& ((n >= -1 && n <= 2)
|
&& ((n >= -1 && n <= 2)
|
|| (! optimize_size
|
|| (! optimize_size
|
&& powi_cost (n) <= POWI_MAX_MULTS)))
|
&& powi_cost (n) <= POWI_MAX_MULTS)))
|
{
|
{
|
op0 = expand_expr (arg0, subtarget, VOIDmode, 0);
|
op0 = expand_expr (arg0, subtarget, VOIDmode, 0);
|
op0 = force_reg (mode, op0);
|
op0 = force_reg (mode, op0);
|
return expand_powi (op0, mode, n);
|
return expand_powi (op0, mode, n);
|
}
|
}
|
}
|
}
|
|
|
/* Emit a libcall to libgcc. */
|
/* Emit a libcall to libgcc. */
|
|
|
/* Mode of the 2nd argument must match that of an int. */
|
/* Mode of the 2nd argument must match that of an int. */
|
mode2 = mode_for_size (INT_TYPE_SIZE, MODE_INT, 0);
|
mode2 = mode_for_size (INT_TYPE_SIZE, MODE_INT, 0);
|
|
|
if (target == NULL_RTX)
|
if (target == NULL_RTX)
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
|
|
op0 = expand_expr (arg0, subtarget, mode, 0);
|
op0 = expand_expr (arg0, subtarget, mode, 0);
|
if (GET_MODE (op0) != mode)
|
if (GET_MODE (op0) != mode)
|
op0 = convert_to_mode (mode, op0, 0);
|
op0 = convert_to_mode (mode, op0, 0);
|
op1 = expand_expr (arg1, 0, mode2, 0);
|
op1 = expand_expr (arg1, 0, mode2, 0);
|
if (GET_MODE (op1) != mode2)
|
if (GET_MODE (op1) != mode2)
|
op1 = convert_to_mode (mode2, op1, 0);
|
op1 = convert_to_mode (mode2, op1, 0);
|
|
|
target = emit_library_call_value (powi_optab->handlers[(int) mode].libfunc,
|
target = emit_library_call_value (powi_optab->handlers[(int) mode].libfunc,
|
target, LCT_CONST_MAKE_BLOCK, mode, 2,
|
target, LCT_CONST_MAKE_BLOCK, mode, 2,
|
op0, mode, op1, mode2);
|
op0, mode, op1, mode2);
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand expression EXP which is a call to the strlen builtin. Return 0
|
/* Expand expression EXP which is a call to the strlen builtin. Return 0
|
if we failed the caller should emit a normal call, otherwise
|
if we failed the caller should emit a normal call, otherwise
|
try to get the result in TARGET, if convenient. */
|
try to get the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strlen (tree arglist, rtx target,
|
expand_builtin_strlen (tree arglist, rtx target,
|
enum machine_mode target_mode)
|
enum machine_mode target_mode)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
rtx pat;
|
rtx pat;
|
tree len, src = TREE_VALUE (arglist);
|
tree len, src = TREE_VALUE (arglist);
|
rtx result, src_reg, char_rtx, before_strlen;
|
rtx result, src_reg, char_rtx, before_strlen;
|
enum machine_mode insn_mode = target_mode, char_mode;
|
enum machine_mode insn_mode = target_mode, char_mode;
|
enum insn_code icode = CODE_FOR_nothing;
|
enum insn_code icode = CODE_FOR_nothing;
|
int align;
|
int align;
|
|
|
/* If the length can be computed at compile-time, return it. */
|
/* If the length can be computed at compile-time, return it. */
|
len = c_strlen (src, 0);
|
len = c_strlen (src, 0);
|
if (len)
|
if (len)
|
return expand_expr (len, target, target_mode, EXPAND_NORMAL);
|
return expand_expr (len, target, target_mode, EXPAND_NORMAL);
|
|
|
/* If the length can be computed at compile-time and is constant
|
/* If the length can be computed at compile-time and is constant
|
integer, but there are side-effects in src, evaluate
|
integer, but there are side-effects in src, evaluate
|
src for side-effects, then return len.
|
src for side-effects, then return len.
|
E.g. x = strlen (i++ ? "xfoo" + 1 : "bar");
|
E.g. x = strlen (i++ ? "xfoo" + 1 : "bar");
|
can be optimized into: i++; x = 3; */
|
can be optimized into: i++; x = 3; */
|
len = c_strlen (src, 1);
|
len = c_strlen (src, 1);
|
if (len && TREE_CODE (len) == INTEGER_CST)
|
if (len && TREE_CODE (len) == INTEGER_CST)
|
{
|
{
|
expand_expr (src, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (src, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
return expand_expr (len, target, target_mode, EXPAND_NORMAL);
|
return expand_expr (len, target, target_mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
align = get_pointer_alignment (src, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
align = get_pointer_alignment (src, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
|
|
/* If SRC is not a pointer type, don't do this operation inline. */
|
/* If SRC is not a pointer type, don't do this operation inline. */
|
if (align == 0)
|
if (align == 0)
|
return 0;
|
return 0;
|
|
|
/* Bail out if we can't compute strlen in the right mode. */
|
/* Bail out if we can't compute strlen in the right mode. */
|
while (insn_mode != VOIDmode)
|
while (insn_mode != VOIDmode)
|
{
|
{
|
icode = strlen_optab->handlers[(int) insn_mode].insn_code;
|
icode = strlen_optab->handlers[(int) insn_mode].insn_code;
|
if (icode != CODE_FOR_nothing)
|
if (icode != CODE_FOR_nothing)
|
break;
|
break;
|
|
|
insn_mode = GET_MODE_WIDER_MODE (insn_mode);
|
insn_mode = GET_MODE_WIDER_MODE (insn_mode);
|
}
|
}
|
if (insn_mode == VOIDmode)
|
if (insn_mode == VOIDmode)
|
return 0;
|
return 0;
|
|
|
/* Make a place to write the result of the instruction. */
|
/* Make a place to write the result of the instruction. */
|
result = target;
|
result = target;
|
if (! (result != 0
|
if (! (result != 0
|
&& REG_P (result)
|
&& REG_P (result)
|
&& GET_MODE (result) == insn_mode
|
&& GET_MODE (result) == insn_mode
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
result = gen_reg_rtx (insn_mode);
|
result = gen_reg_rtx (insn_mode);
|
|
|
/* Make a place to hold the source address. We will not expand
|
/* Make a place to hold the source address. We will not expand
|
the actual source until we are sure that the expansion will
|
the actual source until we are sure that the expansion will
|
not fail -- there are trees that cannot be expanded twice. */
|
not fail -- there are trees that cannot be expanded twice. */
|
src_reg = gen_reg_rtx (Pmode);
|
src_reg = gen_reg_rtx (Pmode);
|
|
|
/* Mark the beginning of the strlen sequence so we can emit the
|
/* Mark the beginning of the strlen sequence so we can emit the
|
source operand later. */
|
source operand later. */
|
before_strlen = get_last_insn ();
|
before_strlen = get_last_insn ();
|
|
|
char_rtx = const0_rtx;
|
char_rtx = const0_rtx;
|
char_mode = insn_data[(int) icode].operand[2].mode;
|
char_mode = insn_data[(int) icode].operand[2].mode;
|
if (! (*insn_data[(int) icode].operand[2].predicate) (char_rtx,
|
if (! (*insn_data[(int) icode].operand[2].predicate) (char_rtx,
|
char_mode))
|
char_mode))
|
char_rtx = copy_to_mode_reg (char_mode, char_rtx);
|
char_rtx = copy_to_mode_reg (char_mode, char_rtx);
|
|
|
pat = GEN_FCN (icode) (result, gen_rtx_MEM (BLKmode, src_reg),
|
pat = GEN_FCN (icode) (result, gen_rtx_MEM (BLKmode, src_reg),
|
char_rtx, GEN_INT (align));
|
char_rtx, GEN_INT (align));
|
if (! pat)
|
if (! pat)
|
return 0;
|
return 0;
|
emit_insn (pat);
|
emit_insn (pat);
|
|
|
/* Now that we are assured of success, expand the source. */
|
/* Now that we are assured of success, expand the source. */
|
start_sequence ();
|
start_sequence ();
|
pat = expand_expr (src, src_reg, ptr_mode, EXPAND_NORMAL);
|
pat = expand_expr (src, src_reg, ptr_mode, EXPAND_NORMAL);
|
if (pat != src_reg)
|
if (pat != src_reg)
|
emit_move_insn (src_reg, pat);
|
emit_move_insn (src_reg, pat);
|
pat = get_insns ();
|
pat = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
|
|
if (before_strlen)
|
if (before_strlen)
|
emit_insn_after (pat, before_strlen);
|
emit_insn_after (pat, before_strlen);
|
else
|
else
|
emit_insn_before (pat, get_insns ());
|
emit_insn_before (pat, get_insns ());
|
|
|
/* Return the value in the proper mode for this function. */
|
/* Return the value in the proper mode for this function. */
|
if (GET_MODE (result) == target_mode)
|
if (GET_MODE (result) == target_mode)
|
target = result;
|
target = result;
|
else if (target != 0)
|
else if (target != 0)
|
convert_move (target, result, 0);
|
convert_move (target, result, 0);
|
else
|
else
|
target = convert_to_mode (target_mode, result, 0);
|
target = convert_to_mode (target_mode, result, 0);
|
|
|
return target;
|
return target;
|
}
|
}
|
}
|
}
|
|
|
/* Expand a call to the strstr builtin. Return 0 if we failed the
|
/* Expand a call to the strstr builtin. Return 0 if we failed the
|
caller should emit a normal call, otherwise try to get the result
|
caller should emit a normal call, otherwise try to get the result
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strstr (tree arglist, tree type, rtx target, enum machine_mode mode)
|
expand_builtin_strstr (tree arglist, tree type, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strstr (arglist, type);
|
tree result = fold_builtin_strstr (arglist, type);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to the strchr builtin. Return 0 if we failed the
|
/* Expand a call to the strchr builtin. Return 0 if we failed the
|
caller should emit a normal call, otherwise try to get the result
|
caller should emit a normal call, otherwise try to get the result
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strchr (tree arglist, tree type, rtx target, enum machine_mode mode)
|
expand_builtin_strchr (tree arglist, tree type, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strchr (arglist, type);
|
tree result = fold_builtin_strchr (arglist, type);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
|
|
/* FIXME: Should use strchrM optab so that ports can optimize this. */
|
/* FIXME: Should use strchrM optab so that ports can optimize this. */
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to the strrchr builtin. Return 0 if we failed the
|
/* Expand a call to the strrchr builtin. Return 0 if we failed the
|
caller should emit a normal call, otherwise try to get the result
|
caller should emit a normal call, otherwise try to get the result
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strrchr (tree arglist, tree type, rtx target, enum machine_mode mode)
|
expand_builtin_strrchr (tree arglist, tree type, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strrchr (arglist, type);
|
tree result = fold_builtin_strrchr (arglist, type);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to the strpbrk builtin. Return 0 if we failed the
|
/* Expand a call to the strpbrk builtin. Return 0 if we failed the
|
caller should emit a normal call, otherwise try to get the result
|
caller should emit a normal call, otherwise try to get the result
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
in TARGET, if convenient (and in mode MODE if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strpbrk (tree arglist, tree type, rtx target, enum machine_mode mode)
|
expand_builtin_strpbrk (tree arglist, tree type, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strpbrk (arglist, type);
|
tree result = fold_builtin_strpbrk (arglist, type);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Callback routine for store_by_pieces. Read GET_MODE_BITSIZE (MODE)
|
/* Callback routine for store_by_pieces. Read GET_MODE_BITSIZE (MODE)
|
bytes from constant string DATA + OFFSET and return it as target
|
bytes from constant string DATA + OFFSET and return it as target
|
constant. */
|
constant. */
|
|
|
static rtx
|
static rtx
|
builtin_memcpy_read_str (void *data, HOST_WIDE_INT offset,
|
builtin_memcpy_read_str (void *data, HOST_WIDE_INT offset,
|
enum machine_mode mode)
|
enum machine_mode mode)
|
{
|
{
|
const char *str = (const char *) data;
|
const char *str = (const char *) data;
|
|
|
gcc_assert (offset >= 0
|
gcc_assert (offset >= 0
|
&& ((unsigned HOST_WIDE_INT) offset + GET_MODE_SIZE (mode)
|
&& ((unsigned HOST_WIDE_INT) offset + GET_MODE_SIZE (mode)
|
<= strlen (str) + 1));
|
<= strlen (str) + 1));
|
|
|
return c_readstr (str + offset, mode);
|
return c_readstr (str + offset, mode);
|
}
|
}
|
|
|
/* Expand a call to the memcpy builtin, with arguments in ARGLIST.
|
/* Expand a call to the memcpy builtin, with arguments in ARGLIST.
|
Return 0 if we failed, the caller should emit a normal call,
|
Return 0 if we failed, the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient (and in
|
otherwise try to get the result in TARGET, if convenient (and in
|
mode MODE if that's convenient). */
|
mode MODE if that's convenient). */
|
static rtx
|
static rtx
|
expand_builtin_memcpy (tree exp, rtx target, enum machine_mode mode)
|
expand_builtin_memcpy (tree exp, rtx target, enum machine_mode mode)
|
{
|
{
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dest = TREE_VALUE (arglist);
|
tree dest = TREE_VALUE (arglist);
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
const char *src_str;
|
const char *src_str;
|
unsigned int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
unsigned int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
unsigned int dest_align
|
unsigned int dest_align
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
rtx dest_mem, src_mem, dest_addr, len_rtx;
|
rtx dest_mem, src_mem, dest_addr, len_rtx;
|
tree result = fold_builtin_memory_op (arglist, TREE_TYPE (TREE_TYPE (fndecl)),
|
tree result = fold_builtin_memory_op (arglist, TREE_TYPE (TREE_TYPE (fndecl)),
|
false, /*endp=*/0);
|
false, /*endp=*/0);
|
|
|
if (result)
|
if (result)
|
{
|
{
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
{
|
{
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
EXPAND_NORMAL);
|
EXPAND_NORMAL);
|
result = TREE_OPERAND (result, 1);
|
result = TREE_OPERAND (result, 1);
|
}
|
}
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* If DEST is not a pointer type, call the normal function. */
|
/* If DEST is not a pointer type, call the normal function. */
|
if (dest_align == 0)
|
if (dest_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If either SRC is not a pointer type, don't do this
|
/* If either SRC is not a pointer type, don't do this
|
operation in-line. */
|
operation in-line. */
|
if (src_align == 0)
|
if (src_align == 0)
|
return 0;
|
return 0;
|
|
|
dest_mem = get_memory_rtx (dest, len);
|
dest_mem = get_memory_rtx (dest, len);
|
set_mem_align (dest_mem, dest_align);
|
set_mem_align (dest_mem, dest_align);
|
len_rtx = expand_normal (len);
|
len_rtx = expand_normal (len);
|
src_str = c_getstr (src);
|
src_str = c_getstr (src);
|
|
|
/* If SRC is a string constant and block move would be done
|
/* If SRC is a string constant and block move would be done
|
by pieces, we can avoid loading the string from memory
|
by pieces, we can avoid loading the string from memory
|
and only stored the computed constants. */
|
and only stored the computed constants. */
|
if (src_str
|
if (src_str
|
&& GET_CODE (len_rtx) == CONST_INT
|
&& GET_CODE (len_rtx) == CONST_INT
|
&& (unsigned HOST_WIDE_INT) INTVAL (len_rtx) <= strlen (src_str) + 1
|
&& (unsigned HOST_WIDE_INT) INTVAL (len_rtx) <= strlen (src_str) + 1
|
&& can_store_by_pieces (INTVAL (len_rtx), builtin_memcpy_read_str,
|
&& can_store_by_pieces (INTVAL (len_rtx), builtin_memcpy_read_str,
|
(void *) src_str, dest_align))
|
(void *) src_str, dest_align))
|
{
|
{
|
dest_mem = store_by_pieces (dest_mem, INTVAL (len_rtx),
|
dest_mem = store_by_pieces (dest_mem, INTVAL (len_rtx),
|
builtin_memcpy_read_str,
|
builtin_memcpy_read_str,
|
(void *) src_str, dest_align, 0);
|
(void *) src_str, dest_align, 0);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
return dest_mem;
|
return dest_mem;
|
}
|
}
|
|
|
src_mem = get_memory_rtx (src, len);
|
src_mem = get_memory_rtx (src, len);
|
set_mem_align (src_mem, src_align);
|
set_mem_align (src_mem, src_align);
|
|
|
/* Copy word part most expediently. */
|
/* Copy word part most expediently. */
|
dest_addr = emit_block_move (dest_mem, src_mem, len_rtx,
|
dest_addr = emit_block_move (dest_mem, src_mem, len_rtx,
|
CALL_EXPR_TAILCALL (exp)
|
CALL_EXPR_TAILCALL (exp)
|
? BLOCK_OP_TAILCALL : BLOCK_OP_NORMAL);
|
? BLOCK_OP_TAILCALL : BLOCK_OP_NORMAL);
|
|
|
if (dest_addr == 0)
|
if (dest_addr == 0)
|
{
|
{
|
dest_addr = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_addr = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_addr = convert_memory_address (ptr_mode, dest_addr);
|
dest_addr = convert_memory_address (ptr_mode, dest_addr);
|
}
|
}
|
return dest_addr;
|
return dest_addr;
|
}
|
}
|
}
|
}
|
|
|
/* Expand a call to the mempcpy builtin, with arguments in ARGLIST.
|
/* Expand a call to the mempcpy builtin, with arguments in ARGLIST.
|
Return 0 if we failed; the caller should emit a normal call,
|
Return 0 if we failed; the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient (and in
|
otherwise try to get the result in TARGET, if convenient (and in
|
mode MODE if that's convenient). If ENDP is 0 return the
|
mode MODE if that's convenient). If ENDP is 0 return the
|
destination pointer, if ENDP is 1 return the end pointer ala
|
destination pointer, if ENDP is 1 return the end pointer ala
|
mempcpy, and if ENDP is 2 return the end pointer minus one ala
|
mempcpy, and if ENDP is 2 return the end pointer minus one ala
|
stpcpy. */
|
stpcpy. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_mempcpy (tree arglist, tree type, rtx target, enum machine_mode mode,
|
expand_builtin_mempcpy (tree arglist, tree type, rtx target, enum machine_mode mode,
|
int endp)
|
int endp)
|
{
|
{
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
/* If return value is ignored, transform mempcpy into memcpy. */
|
/* If return value is ignored, transform mempcpy into memcpy. */
|
else if (target == const0_rtx)
|
else if (target == const0_rtx)
|
{
|
{
|
tree fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
tree fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
|
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return expand_expr (build_function_call_expr (fn, arglist),
|
return expand_expr (build_function_call_expr (fn, arglist),
|
target, mode, EXPAND_NORMAL);
|
target, mode, EXPAND_NORMAL);
|
}
|
}
|
else
|
else
|
{
|
{
|
tree dest = TREE_VALUE (arglist);
|
tree dest = TREE_VALUE (arglist);
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
const char *src_str;
|
const char *src_str;
|
unsigned int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
unsigned int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
unsigned int dest_align
|
unsigned int dest_align
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
rtx dest_mem, src_mem, len_rtx;
|
rtx dest_mem, src_mem, len_rtx;
|
tree result = fold_builtin_memory_op (arglist, type, false, endp);
|
tree result = fold_builtin_memory_op (arglist, type, false, endp);
|
|
|
if (result)
|
if (result)
|
{
|
{
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
{
|
{
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
EXPAND_NORMAL);
|
EXPAND_NORMAL);
|
result = TREE_OPERAND (result, 1);
|
result = TREE_OPERAND (result, 1);
|
}
|
}
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* If either SRC or DEST is not a pointer type, don't do this
|
/* If either SRC or DEST is not a pointer type, don't do this
|
operation in-line. */
|
operation in-line. */
|
if (dest_align == 0 || src_align == 0)
|
if (dest_align == 0 || src_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If LEN is not constant, call the normal function. */
|
/* If LEN is not constant, call the normal function. */
|
if (! host_integerp (len, 1))
|
if (! host_integerp (len, 1))
|
return 0;
|
return 0;
|
|
|
len_rtx = expand_normal (len);
|
len_rtx = expand_normal (len);
|
src_str = c_getstr (src);
|
src_str = c_getstr (src);
|
|
|
/* If SRC is a string constant and block move would be done
|
/* If SRC is a string constant and block move would be done
|
by pieces, we can avoid loading the string from memory
|
by pieces, we can avoid loading the string from memory
|
and only stored the computed constants. */
|
and only stored the computed constants. */
|
if (src_str
|
if (src_str
|
&& GET_CODE (len_rtx) == CONST_INT
|
&& GET_CODE (len_rtx) == CONST_INT
|
&& (unsigned HOST_WIDE_INT) INTVAL (len_rtx) <= strlen (src_str) + 1
|
&& (unsigned HOST_WIDE_INT) INTVAL (len_rtx) <= strlen (src_str) + 1
|
&& can_store_by_pieces (INTVAL (len_rtx), builtin_memcpy_read_str,
|
&& can_store_by_pieces (INTVAL (len_rtx), builtin_memcpy_read_str,
|
(void *) src_str, dest_align))
|
(void *) src_str, dest_align))
|
{
|
{
|
dest_mem = get_memory_rtx (dest, len);
|
dest_mem = get_memory_rtx (dest, len);
|
set_mem_align (dest_mem, dest_align);
|
set_mem_align (dest_mem, dest_align);
|
dest_mem = store_by_pieces (dest_mem, INTVAL (len_rtx),
|
dest_mem = store_by_pieces (dest_mem, INTVAL (len_rtx),
|
builtin_memcpy_read_str,
|
builtin_memcpy_read_str,
|
(void *) src_str, dest_align, endp);
|
(void *) src_str, dest_align, endp);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
return dest_mem;
|
return dest_mem;
|
}
|
}
|
|
|
if (GET_CODE (len_rtx) == CONST_INT
|
if (GET_CODE (len_rtx) == CONST_INT
|
&& can_move_by_pieces (INTVAL (len_rtx),
|
&& can_move_by_pieces (INTVAL (len_rtx),
|
MIN (dest_align, src_align)))
|
MIN (dest_align, src_align)))
|
{
|
{
|
dest_mem = get_memory_rtx (dest, len);
|
dest_mem = get_memory_rtx (dest, len);
|
set_mem_align (dest_mem, dest_align);
|
set_mem_align (dest_mem, dest_align);
|
src_mem = get_memory_rtx (src, len);
|
src_mem = get_memory_rtx (src, len);
|
set_mem_align (src_mem, src_align);
|
set_mem_align (src_mem, src_align);
|
dest_mem = move_by_pieces (dest_mem, src_mem, INTVAL (len_rtx),
|
dest_mem = move_by_pieces (dest_mem, src_mem, INTVAL (len_rtx),
|
MIN (dest_align, src_align), endp);
|
MIN (dest_align, src_align), endp);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
return dest_mem;
|
return dest_mem;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the memmove builtin. Return 0
|
/* Expand expression EXP, which is a call to the memmove builtin. Return 0
|
if we failed; the caller should emit a normal call. */
|
if we failed; the caller should emit a normal call. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_memmove (tree arglist, tree type, rtx target,
|
expand_builtin_memmove (tree arglist, tree type, rtx target,
|
enum machine_mode mode, tree orig_exp)
|
enum machine_mode mode, tree orig_exp)
|
{
|
{
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dest = TREE_VALUE (arglist);
|
tree dest = TREE_VALUE (arglist);
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
unsigned int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
unsigned int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
unsigned int dest_align
|
unsigned int dest_align
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
tree result = fold_builtin_memory_op (arglist, type, false, /*endp=*/3);
|
tree result = fold_builtin_memory_op (arglist, type, false, /*endp=*/3);
|
|
|
if (result)
|
if (result)
|
{
|
{
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
{
|
{
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
EXPAND_NORMAL);
|
EXPAND_NORMAL);
|
result = TREE_OPERAND (result, 1);
|
result = TREE_OPERAND (result, 1);
|
}
|
}
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* If DEST is not a pointer type, call the normal function. */
|
/* If DEST is not a pointer type, call the normal function. */
|
if (dest_align == 0)
|
if (dest_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If either SRC is not a pointer type, don't do this
|
/* If either SRC is not a pointer type, don't do this
|
operation in-line. */
|
operation in-line. */
|
if (src_align == 0)
|
if (src_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If src is categorized for a readonly section we can use
|
/* If src is categorized for a readonly section we can use
|
normal memcpy. */
|
normal memcpy. */
|
if (readonly_data_expr (src))
|
if (readonly_data_expr (src))
|
{
|
{
|
tree fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
tree fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
fn = build_function_call_expr (fn, arglist);
|
fn = build_function_call_expr (fn, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (orig_exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (orig_exp);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* If length is 1 and we can expand memcpy call inline,
|
/* If length is 1 and we can expand memcpy call inline,
|
it is ok to use memcpy as well. */
|
it is ok to use memcpy as well. */
|
if (integer_onep (len))
|
if (integer_onep (len))
|
{
|
{
|
rtx ret = expand_builtin_mempcpy (arglist, type, target, mode,
|
rtx ret = expand_builtin_mempcpy (arglist, type, target, mode,
|
/*endp=*/0);
|
/*endp=*/0);
|
if (ret)
|
if (ret)
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/* Otherwise, call the normal function. */
|
/* Otherwise, call the normal function. */
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the bcopy builtin. Return 0
|
/* Expand expression EXP, which is a call to the bcopy builtin. Return 0
|
if we failed the caller should emit a normal call. */
|
if we failed the caller should emit a normal call. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_bcopy (tree exp)
|
expand_builtin_bcopy (tree exp)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree type = TREE_TYPE (exp);
|
tree type = TREE_TYPE (exp);
|
tree src, dest, size, newarglist;
|
tree src, dest, size, newarglist;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
src = TREE_VALUE (arglist);
|
src = TREE_VALUE (arglist);
|
dest = TREE_VALUE (TREE_CHAIN (arglist));
|
dest = TREE_VALUE (TREE_CHAIN (arglist));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* New argument list transforming bcopy(ptr x, ptr y, int z) to
|
/* New argument list transforming bcopy(ptr x, ptr y, int z) to
|
memmove(ptr y, ptr x, size_t z). This is done this way
|
memmove(ptr y, ptr x, size_t z). This is done this way
|
so that if it isn't expanded inline, we fallback to
|
so that if it isn't expanded inline, we fallback to
|
calling bcopy instead of memmove. */
|
calling bcopy instead of memmove. */
|
|
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = tree_cons (NULL_TREE, src, newarglist);
|
newarglist = tree_cons (NULL_TREE, src, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
|
|
return expand_builtin_memmove (newarglist, type, const0_rtx, VOIDmode, exp);
|
return expand_builtin_memmove (newarglist, type, const0_rtx, VOIDmode, exp);
|
}
|
}
|
|
|
#ifndef HAVE_movstr
|
#ifndef HAVE_movstr
|
# define HAVE_movstr 0
|
# define HAVE_movstr 0
|
# define CODE_FOR_movstr CODE_FOR_nothing
|
# define CODE_FOR_movstr CODE_FOR_nothing
|
#endif
|
#endif
|
|
|
/* Expand into a movstr instruction, if one is available. Return 0 if
|
/* Expand into a movstr instruction, if one is available. Return 0 if
|
we failed, the caller should emit a normal call, otherwise try to
|
we failed, the caller should emit a normal call, otherwise try to
|
get the result in TARGET, if convenient. If ENDP is 0 return the
|
get the result in TARGET, if convenient. If ENDP is 0 return the
|
destination pointer, if ENDP is 1 return the end pointer ala
|
destination pointer, if ENDP is 1 return the end pointer ala
|
mempcpy, and if ENDP is 2 return the end pointer minus one ala
|
mempcpy, and if ENDP is 2 return the end pointer minus one ala
|
stpcpy. */
|
stpcpy. */
|
|
|
static rtx
|
static rtx
|
expand_movstr (tree dest, tree src, rtx target, int endp)
|
expand_movstr (tree dest, tree src, rtx target, int endp)
|
{
|
{
|
rtx end;
|
rtx end;
|
rtx dest_mem;
|
rtx dest_mem;
|
rtx src_mem;
|
rtx src_mem;
|
rtx insn;
|
rtx insn;
|
const struct insn_data * data;
|
const struct insn_data * data;
|
|
|
if (!HAVE_movstr)
|
if (!HAVE_movstr)
|
return 0;
|
return 0;
|
|
|
dest_mem = get_memory_rtx (dest, NULL);
|
dest_mem = get_memory_rtx (dest, NULL);
|
src_mem = get_memory_rtx (src, NULL);
|
src_mem = get_memory_rtx (src, NULL);
|
if (!endp)
|
if (!endp)
|
{
|
{
|
target = force_reg (Pmode, XEXP (dest_mem, 0));
|
target = force_reg (Pmode, XEXP (dest_mem, 0));
|
dest_mem = replace_equiv_address (dest_mem, target);
|
dest_mem = replace_equiv_address (dest_mem, target);
|
end = gen_reg_rtx (Pmode);
|
end = gen_reg_rtx (Pmode);
|
}
|
}
|
else
|
else
|
{
|
{
|
if (target == 0 || target == const0_rtx)
|
if (target == 0 || target == const0_rtx)
|
{
|
{
|
end = gen_reg_rtx (Pmode);
|
end = gen_reg_rtx (Pmode);
|
if (target == 0)
|
if (target == 0)
|
target = end;
|
target = end;
|
}
|
}
|
else
|
else
|
end = target;
|
end = target;
|
}
|
}
|
|
|
data = insn_data + CODE_FOR_movstr;
|
data = insn_data + CODE_FOR_movstr;
|
|
|
if (data->operand[0].mode != VOIDmode)
|
if (data->operand[0].mode != VOIDmode)
|
end = gen_lowpart (data->operand[0].mode, end);
|
end = gen_lowpart (data->operand[0].mode, end);
|
|
|
insn = data->genfun (end, dest_mem, src_mem);
|
insn = data->genfun (end, dest_mem, src_mem);
|
|
|
gcc_assert (insn);
|
gcc_assert (insn);
|
|
|
emit_insn (insn);
|
emit_insn (insn);
|
|
|
/* movstr is supposed to set end to the address of the NUL
|
/* movstr is supposed to set end to the address of the NUL
|
terminator. If the caller requested a mempcpy-like return value,
|
terminator. If the caller requested a mempcpy-like return value,
|
adjust it. */
|
adjust it. */
|
if (endp == 1 && target != const0_rtx)
|
if (endp == 1 && target != const0_rtx)
|
{
|
{
|
rtx tem = plus_constant (gen_lowpart (GET_MODE (target), end), 1);
|
rtx tem = plus_constant (gen_lowpart (GET_MODE (target), end), 1);
|
emit_move_insn (target, force_operand (tem, NULL_RTX));
|
emit_move_insn (target, force_operand (tem, NULL_RTX));
|
}
|
}
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strcpy builtin. Return 0
|
/* Expand expression EXP, which is a call to the strcpy builtin. Return 0
|
if we failed the caller should emit a normal call, otherwise try to get
|
if we failed the caller should emit a normal call, otherwise try to get
|
the result in TARGET, if convenient (and in mode MODE if that's
|
the result in TARGET, if convenient (and in mode MODE if that's
|
convenient). */
|
convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strcpy (tree fndecl, tree arglist, rtx target, enum machine_mode mode)
|
expand_builtin_strcpy (tree fndecl, tree arglist, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strcpy (fndecl, arglist, 0);
|
tree result = fold_builtin_strcpy (fndecl, arglist, 0);
|
if (result)
|
if (result)
|
{
|
{
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
{
|
{
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
EXPAND_NORMAL);
|
EXPAND_NORMAL);
|
result = TREE_OPERAND (result, 1);
|
result = TREE_OPERAND (result, 1);
|
}
|
}
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
return expand_movstr (TREE_VALUE (arglist),
|
return expand_movstr (TREE_VALUE (arglist),
|
TREE_VALUE (TREE_CHAIN (arglist)),
|
TREE_VALUE (TREE_CHAIN (arglist)),
|
target, /*endp=*/0);
|
target, /*endp=*/0);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to the stpcpy builtin, with arguments in ARGLIST.
|
/* Expand a call to the stpcpy builtin, with arguments in ARGLIST.
|
Return 0 if we failed the caller should emit a normal call,
|
Return 0 if we failed the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient (and in
|
otherwise try to get the result in TARGET, if convenient (and in
|
mode MODE if that's convenient). */
|
mode MODE if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_stpcpy (tree exp, rtx target, enum machine_mode mode)
|
expand_builtin_stpcpy (tree exp, rtx target, enum machine_mode mode)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
/* If return value is ignored, transform stpcpy into strcpy. */
|
/* If return value is ignored, transform stpcpy into strcpy. */
|
if (target == const0_rtx)
|
if (target == const0_rtx)
|
{
|
{
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return expand_expr (build_function_call_expr (fn, arglist),
|
return expand_expr (build_function_call_expr (fn, arglist),
|
target, mode, EXPAND_NORMAL);
|
target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dst, src, len, lenp1;
|
tree dst, src, len, lenp1;
|
tree narglist;
|
tree narglist;
|
rtx ret;
|
rtx ret;
|
|
|
/* Ensure we get an actual string whose length can be evaluated at
|
/* Ensure we get an actual string whose length can be evaluated at
|
compile-time, not an expression containing a string. This is
|
compile-time, not an expression containing a string. This is
|
because the latter will potentially produce pessimized code
|
because the latter will potentially produce pessimized code
|
when used to produce the return value. */
|
when used to produce the return value. */
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
if (! c_getstr (src) || ! (len = c_strlen (src, 0)))
|
if (! c_getstr (src) || ! (len = c_strlen (src, 0)))
|
return expand_movstr (TREE_VALUE (arglist),
|
return expand_movstr (TREE_VALUE (arglist),
|
TREE_VALUE (TREE_CHAIN (arglist)),
|
TREE_VALUE (TREE_CHAIN (arglist)),
|
target, /*endp=*/2);
|
target, /*endp=*/2);
|
|
|
dst = TREE_VALUE (arglist);
|
dst = TREE_VALUE (arglist);
|
lenp1 = size_binop (PLUS_EXPR, len, ssize_int (1));
|
lenp1 = size_binop (PLUS_EXPR, len, ssize_int (1));
|
narglist = build_tree_list (NULL_TREE, lenp1);
|
narglist = build_tree_list (NULL_TREE, lenp1);
|
narglist = tree_cons (NULL_TREE, src, narglist);
|
narglist = tree_cons (NULL_TREE, src, narglist);
|
narglist = tree_cons (NULL_TREE, dst, narglist);
|
narglist = tree_cons (NULL_TREE, dst, narglist);
|
ret = expand_builtin_mempcpy (narglist, TREE_TYPE (exp),
|
ret = expand_builtin_mempcpy (narglist, TREE_TYPE (exp),
|
target, mode, /*endp=*/2);
|
target, mode, /*endp=*/2);
|
|
|
if (ret)
|
if (ret)
|
return ret;
|
return ret;
|
|
|
if (TREE_CODE (len) == INTEGER_CST)
|
if (TREE_CODE (len) == INTEGER_CST)
|
{
|
{
|
rtx len_rtx = expand_normal (len);
|
rtx len_rtx = expand_normal (len);
|
|
|
if (GET_CODE (len_rtx) == CONST_INT)
|
if (GET_CODE (len_rtx) == CONST_INT)
|
{
|
{
|
ret = expand_builtin_strcpy (get_callee_fndecl (exp),
|
ret = expand_builtin_strcpy (get_callee_fndecl (exp),
|
arglist, target, mode);
|
arglist, target, mode);
|
|
|
if (ret)
|
if (ret)
|
{
|
{
|
if (! target)
|
if (! target)
|
{
|
{
|
if (mode != VOIDmode)
|
if (mode != VOIDmode)
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
else
|
else
|
target = gen_reg_rtx (GET_MODE (ret));
|
target = gen_reg_rtx (GET_MODE (ret));
|
}
|
}
|
if (GET_MODE (target) != GET_MODE (ret))
|
if (GET_MODE (target) != GET_MODE (ret))
|
ret = gen_lowpart (GET_MODE (target), ret);
|
ret = gen_lowpart (GET_MODE (target), ret);
|
|
|
ret = plus_constant (ret, INTVAL (len_rtx));
|
ret = plus_constant (ret, INTVAL (len_rtx));
|
ret = emit_move_insn (target, force_operand (ret, NULL_RTX));
|
ret = emit_move_insn (target, force_operand (ret, NULL_RTX));
|
gcc_assert (ret);
|
gcc_assert (ret);
|
|
|
return target;
|
return target;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
return expand_movstr (TREE_VALUE (arglist),
|
return expand_movstr (TREE_VALUE (arglist),
|
TREE_VALUE (TREE_CHAIN (arglist)),
|
TREE_VALUE (TREE_CHAIN (arglist)),
|
target, /*endp=*/2);
|
target, /*endp=*/2);
|
}
|
}
|
}
|
}
|
|
|
/* Callback routine for store_by_pieces. Read GET_MODE_BITSIZE (MODE)
|
/* Callback routine for store_by_pieces. Read GET_MODE_BITSIZE (MODE)
|
bytes from constant string DATA + OFFSET and return it as target
|
bytes from constant string DATA + OFFSET and return it as target
|
constant. */
|
constant. */
|
|
|
static rtx
|
static rtx
|
builtin_strncpy_read_str (void *data, HOST_WIDE_INT offset,
|
builtin_strncpy_read_str (void *data, HOST_WIDE_INT offset,
|
enum machine_mode mode)
|
enum machine_mode mode)
|
{
|
{
|
const char *str = (const char *) data;
|
const char *str = (const char *) data;
|
|
|
if ((unsigned HOST_WIDE_INT) offset > strlen (str))
|
if ((unsigned HOST_WIDE_INT) offset > strlen (str))
|
return const0_rtx;
|
return const0_rtx;
|
|
|
return c_readstr (str + offset, mode);
|
return c_readstr (str + offset, mode);
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strncpy builtin. Return 0
|
/* Expand expression EXP, which is a call to the strncpy builtin. Return 0
|
if we failed the caller should emit a normal call. */
|
if we failed the caller should emit a normal call. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strncpy (tree exp, rtx target, enum machine_mode mode)
|
expand_builtin_strncpy (tree exp, rtx target, enum machine_mode mode)
|
{
|
{
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
if (validate_arglist (arglist,
|
if (validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
{
|
{
|
tree slen = c_strlen (TREE_VALUE (TREE_CHAIN (arglist)), 1);
|
tree slen = c_strlen (TREE_VALUE (TREE_CHAIN (arglist)), 1);
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree result = fold_builtin_strncpy (fndecl, arglist, slen);
|
tree result = fold_builtin_strncpy (fndecl, arglist, slen);
|
|
|
if (result)
|
if (result)
|
{
|
{
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
while (TREE_CODE (result) == COMPOUND_EXPR)
|
{
|
{
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
|
EXPAND_NORMAL);
|
EXPAND_NORMAL);
|
result = TREE_OPERAND (result, 1);
|
result = TREE_OPERAND (result, 1);
|
}
|
}
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* We must be passed a constant len and src parameter. */
|
/* We must be passed a constant len and src parameter. */
|
if (!host_integerp (len, 1) || !slen || !host_integerp (slen, 1))
|
if (!host_integerp (len, 1) || !slen || !host_integerp (slen, 1))
|
return 0;
|
return 0;
|
|
|
slen = size_binop (PLUS_EXPR, slen, ssize_int (1));
|
slen = size_binop (PLUS_EXPR, slen, ssize_int (1));
|
|
|
/* We're required to pad with trailing zeros if the requested
|
/* We're required to pad with trailing zeros if the requested
|
len is greater than strlen(s2)+1. In that case try to
|
len is greater than strlen(s2)+1. In that case try to
|
use store_by_pieces, if it fails, punt. */
|
use store_by_pieces, if it fails, punt. */
|
if (tree_int_cst_lt (slen, len))
|
if (tree_int_cst_lt (slen, len))
|
{
|
{
|
tree dest = TREE_VALUE (arglist);
|
tree dest = TREE_VALUE (arglist);
|
unsigned int dest_align
|
unsigned int dest_align
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
const char *p = c_getstr (TREE_VALUE (TREE_CHAIN (arglist)));
|
const char *p = c_getstr (TREE_VALUE (TREE_CHAIN (arglist)));
|
rtx dest_mem;
|
rtx dest_mem;
|
|
|
if (!p || dest_align == 0 || !host_integerp (len, 1)
|
if (!p || dest_align == 0 || !host_integerp (len, 1)
|
|| !can_store_by_pieces (tree_low_cst (len, 1),
|
|| !can_store_by_pieces (tree_low_cst (len, 1),
|
builtin_strncpy_read_str,
|
builtin_strncpy_read_str,
|
(void *) p, dest_align))
|
(void *) p, dest_align))
|
return 0;
|
return 0;
|
|
|
dest_mem = get_memory_rtx (dest, len);
|
dest_mem = get_memory_rtx (dest, len);
|
store_by_pieces (dest_mem, tree_low_cst (len, 1),
|
store_by_pieces (dest_mem, tree_low_cst (len, 1),
|
builtin_strncpy_read_str,
|
builtin_strncpy_read_str,
|
(void *) p, dest_align, 0);
|
(void *) p, dest_align, 0);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
return dest_mem;
|
return dest_mem;
|
}
|
}
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Callback routine for store_by_pieces. Read GET_MODE_BITSIZE (MODE)
|
/* Callback routine for store_by_pieces. Read GET_MODE_BITSIZE (MODE)
|
bytes from constant string DATA + OFFSET and return it as target
|
bytes from constant string DATA + OFFSET and return it as target
|
constant. */
|
constant. */
|
|
|
static rtx
|
static rtx
|
builtin_memset_read_str (void *data, HOST_WIDE_INT offset ATTRIBUTE_UNUSED,
|
builtin_memset_read_str (void *data, HOST_WIDE_INT offset ATTRIBUTE_UNUSED,
|
enum machine_mode mode)
|
enum machine_mode mode)
|
{
|
{
|
const char *c = (const char *) data;
|
const char *c = (const char *) data;
|
char *p = alloca (GET_MODE_SIZE (mode));
|
char *p = alloca (GET_MODE_SIZE (mode));
|
|
|
memset (p, *c, GET_MODE_SIZE (mode));
|
memset (p, *c, GET_MODE_SIZE (mode));
|
|
|
return c_readstr (p, mode);
|
return c_readstr (p, mode);
|
}
|
}
|
|
|
/* Callback routine for store_by_pieces. Return the RTL of a register
|
/* Callback routine for store_by_pieces. Return the RTL of a register
|
containing GET_MODE_SIZE (MODE) consecutive copies of the unsigned
|
containing GET_MODE_SIZE (MODE) consecutive copies of the unsigned
|
char value given in the RTL register data. For example, if mode is
|
char value given in the RTL register data. For example, if mode is
|
4 bytes wide, return the RTL for 0x01010101*data. */
|
4 bytes wide, return the RTL for 0x01010101*data. */
|
|
|
static rtx
|
static rtx
|
builtin_memset_gen_str (void *data, HOST_WIDE_INT offset ATTRIBUTE_UNUSED,
|
builtin_memset_gen_str (void *data, HOST_WIDE_INT offset ATTRIBUTE_UNUSED,
|
enum machine_mode mode)
|
enum machine_mode mode)
|
{
|
{
|
rtx target, coeff;
|
rtx target, coeff;
|
size_t size;
|
size_t size;
|
char *p;
|
char *p;
|
|
|
size = GET_MODE_SIZE (mode);
|
size = GET_MODE_SIZE (mode);
|
if (size == 1)
|
if (size == 1)
|
return (rtx) data;
|
return (rtx) data;
|
|
|
p = alloca (size);
|
p = alloca (size);
|
memset (p, 1, size);
|
memset (p, 1, size);
|
coeff = c_readstr (p, mode);
|
coeff = c_readstr (p, mode);
|
|
|
target = convert_to_mode (mode, (rtx) data, 1);
|
target = convert_to_mode (mode, (rtx) data, 1);
|
target = expand_mult (mode, target, coeff, NULL_RTX, 1);
|
target = expand_mult (mode, target, coeff, NULL_RTX, 1);
|
return force_reg (mode, target);
|
return force_reg (mode, target);
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the memset builtin. Return 0
|
/* Expand expression EXP, which is a call to the memset builtin. Return 0
|
if we failed the caller should emit a normal call, otherwise try to get
|
if we failed the caller should emit a normal call, otherwise try to get
|
the result in TARGET, if convenient (and in mode MODE if that's
|
the result in TARGET, if convenient (and in mode MODE if that's
|
convenient). */
|
convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_memset (tree arglist, rtx target, enum machine_mode mode,
|
expand_builtin_memset (tree arglist, rtx target, enum machine_mode mode,
|
tree orig_exp)
|
tree orig_exp)
|
{
|
{
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dest = TREE_VALUE (arglist);
|
tree dest = TREE_VALUE (arglist);
|
tree val = TREE_VALUE (TREE_CHAIN (arglist));
|
tree val = TREE_VALUE (TREE_CHAIN (arglist));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree fndecl, fn;
|
tree fndecl, fn;
|
enum built_in_function fcode;
|
enum built_in_function fcode;
|
char c;
|
char c;
|
unsigned int dest_align;
|
unsigned int dest_align;
|
rtx dest_mem, dest_addr, len_rtx;
|
rtx dest_mem, dest_addr, len_rtx;
|
|
|
dest_align = get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
dest_align = get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
|
|
/* If DEST is not a pointer type, don't do this
|
/* If DEST is not a pointer type, don't do this
|
operation in-line. */
|
operation in-line. */
|
if (dest_align == 0)
|
if (dest_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If the LEN parameter is zero, return DEST. */
|
/* If the LEN parameter is zero, return DEST. */
|
if (integer_zerop (len))
|
if (integer_zerop (len))
|
{
|
{
|
/* Evaluate and ignore VAL in case it has side-effects. */
|
/* Evaluate and ignore VAL in case it has side-effects. */
|
expand_expr (val, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (val, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
return expand_expr (dest, target, mode, EXPAND_NORMAL);
|
return expand_expr (dest, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* Stabilize the arguments in case we fail. */
|
/* Stabilize the arguments in case we fail. */
|
dest = builtin_save_expr (dest);
|
dest = builtin_save_expr (dest);
|
val = builtin_save_expr (val);
|
val = builtin_save_expr (val);
|
len = builtin_save_expr (len);
|
len = builtin_save_expr (len);
|
|
|
len_rtx = expand_normal (len);
|
len_rtx = expand_normal (len);
|
dest_mem = get_memory_rtx (dest, len);
|
dest_mem = get_memory_rtx (dest, len);
|
|
|
if (TREE_CODE (val) != INTEGER_CST)
|
if (TREE_CODE (val) != INTEGER_CST)
|
{
|
{
|
rtx val_rtx;
|
rtx val_rtx;
|
|
|
val_rtx = expand_normal (val);
|
val_rtx = expand_normal (val);
|
val_rtx = convert_to_mode (TYPE_MODE (unsigned_char_type_node),
|
val_rtx = convert_to_mode (TYPE_MODE (unsigned_char_type_node),
|
val_rtx, 0);
|
val_rtx, 0);
|
|
|
/* Assume that we can memset by pieces if we can store the
|
/* Assume that we can memset by pieces if we can store the
|
* the coefficients by pieces (in the required modes).
|
* the coefficients by pieces (in the required modes).
|
* We can't pass builtin_memset_gen_str as that emits RTL. */
|
* We can't pass builtin_memset_gen_str as that emits RTL. */
|
c = 1;
|
c = 1;
|
if (host_integerp (len, 1)
|
if (host_integerp (len, 1)
|
&& !(optimize_size && tree_low_cst (len, 1) > 1)
|
&& !(optimize_size && tree_low_cst (len, 1) > 1)
|
&& can_store_by_pieces (tree_low_cst (len, 1),
|
&& can_store_by_pieces (tree_low_cst (len, 1),
|
builtin_memset_read_str, &c, dest_align))
|
builtin_memset_read_str, &c, dest_align))
|
{
|
{
|
val_rtx = force_reg (TYPE_MODE (unsigned_char_type_node),
|
val_rtx = force_reg (TYPE_MODE (unsigned_char_type_node),
|
val_rtx);
|
val_rtx);
|
store_by_pieces (dest_mem, tree_low_cst (len, 1),
|
store_by_pieces (dest_mem, tree_low_cst (len, 1),
|
builtin_memset_gen_str, val_rtx, dest_align, 0);
|
builtin_memset_gen_str, val_rtx, dest_align, 0);
|
}
|
}
|
else if (!set_storage_via_setmem (dest_mem, len_rtx, val_rtx,
|
else if (!set_storage_via_setmem (dest_mem, len_rtx, val_rtx,
|
dest_align))
|
dest_align))
|
goto do_libcall;
|
goto do_libcall;
|
|
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
return dest_mem;
|
return dest_mem;
|
}
|
}
|
|
|
if (target_char_cast (val, &c))
|
if (target_char_cast (val, &c))
|
goto do_libcall;
|
goto do_libcall;
|
|
|
if (c)
|
if (c)
|
{
|
{
|
if (host_integerp (len, 1)
|
if (host_integerp (len, 1)
|
&& !(optimize_size && tree_low_cst (len, 1) > 1)
|
&& !(optimize_size && tree_low_cst (len, 1) > 1)
|
&& can_store_by_pieces (tree_low_cst (len, 1),
|
&& can_store_by_pieces (tree_low_cst (len, 1),
|
builtin_memset_read_str, &c, dest_align))
|
builtin_memset_read_str, &c, dest_align))
|
store_by_pieces (dest_mem, tree_low_cst (len, 1),
|
store_by_pieces (dest_mem, tree_low_cst (len, 1),
|
builtin_memset_read_str, &c, dest_align, 0);
|
builtin_memset_read_str, &c, dest_align, 0);
|
else if (!set_storage_via_setmem (dest_mem, len_rtx, GEN_INT (c),
|
else if (!set_storage_via_setmem (dest_mem, len_rtx, GEN_INT (c),
|
dest_align))
|
dest_align))
|
goto do_libcall;
|
goto do_libcall;
|
|
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
dest_mem = convert_memory_address (ptr_mode, dest_mem);
|
return dest_mem;
|
return dest_mem;
|
}
|
}
|
|
|
set_mem_align (dest_mem, dest_align);
|
set_mem_align (dest_mem, dest_align);
|
dest_addr = clear_storage (dest_mem, len_rtx,
|
dest_addr = clear_storage (dest_mem, len_rtx,
|
CALL_EXPR_TAILCALL (orig_exp)
|
CALL_EXPR_TAILCALL (orig_exp)
|
? BLOCK_OP_TAILCALL : BLOCK_OP_NORMAL);
|
? BLOCK_OP_TAILCALL : BLOCK_OP_NORMAL);
|
|
|
if (dest_addr == 0)
|
if (dest_addr == 0)
|
{
|
{
|
dest_addr = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_addr = force_operand (XEXP (dest_mem, 0), NULL_RTX);
|
dest_addr = convert_memory_address (ptr_mode, dest_addr);
|
dest_addr = convert_memory_address (ptr_mode, dest_addr);
|
}
|
}
|
|
|
return dest_addr;
|
return dest_addr;
|
|
|
do_libcall:
|
do_libcall:
|
fndecl = get_callee_fndecl (orig_exp);
|
fndecl = get_callee_fndecl (orig_exp);
|
fcode = DECL_FUNCTION_CODE (fndecl);
|
fcode = DECL_FUNCTION_CODE (fndecl);
|
gcc_assert (fcode == BUILT_IN_MEMSET || fcode == BUILT_IN_BZERO);
|
gcc_assert (fcode == BUILT_IN_MEMSET || fcode == BUILT_IN_BZERO);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
if (fcode == BUILT_IN_MEMSET)
|
if (fcode == BUILT_IN_MEMSET)
|
arglist = tree_cons (NULL_TREE, val, arglist);
|
arglist = tree_cons (NULL_TREE, val, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
fn = build_function_call_expr (fndecl, arglist);
|
fn = build_function_call_expr (fndecl, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (orig_exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (orig_exp);
|
return expand_call (fn, target, target == const0_rtx);
|
return expand_call (fn, target, target == const0_rtx);
|
}
|
}
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the bzero builtin. Return 0
|
/* Expand expression EXP, which is a call to the bzero builtin. Return 0
|
if we failed the caller should emit a normal call. */
|
if we failed the caller should emit a normal call. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_bzero (tree exp)
|
expand_builtin_bzero (tree exp)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree dest, size, newarglist;
|
tree dest, size, newarglist;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
size = TREE_VALUE (TREE_CHAIN (arglist));
|
size = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
/* New argument list transforming bzero(ptr x, int y) to
|
/* New argument list transforming bzero(ptr x, int y) to
|
memset(ptr x, int 0, size_t y). This is done this way
|
memset(ptr x, int 0, size_t y). This is done this way
|
so that if it isn't expanded inline, we fallback to
|
so that if it isn't expanded inline, we fallback to
|
calling bzero instead of memset. */
|
calling bzero instead of memset. */
|
|
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = tree_cons (NULL_TREE, integer_zero_node, newarglist);
|
newarglist = tree_cons (NULL_TREE, integer_zero_node, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
|
|
return expand_builtin_memset (newarglist, const0_rtx, VOIDmode, exp);
|
return expand_builtin_memset (newarglist, const0_rtx, VOIDmode, exp);
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the memcmp built-in function.
|
/* Expand expression EXP, which is a call to the memcmp built-in function.
|
ARGLIST is the argument list for this call. Return 0 if we failed and the
|
ARGLIST is the argument list for this call. Return 0 if we failed and the
|
caller should emit a normal call, otherwise try to get the result in
|
caller should emit a normal call, otherwise try to get the result in
|
TARGET, if convenient (and in mode MODE, if that's convenient). */
|
TARGET, if convenient (and in mode MODE, if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_memcmp (tree exp ATTRIBUTE_UNUSED, tree arglist, rtx target,
|
expand_builtin_memcmp (tree exp ATTRIBUTE_UNUSED, tree arglist, rtx target,
|
enum machine_mode mode)
|
enum machine_mode mode)
|
{
|
{
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree result = fold_builtin_memcmp (arglist);
|
tree result = fold_builtin_memcmp (arglist);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
#if defined HAVE_cmpmemsi || defined HAVE_cmpstrnsi
|
#if defined HAVE_cmpmemsi || defined HAVE_cmpstrnsi
|
{
|
{
|
tree arg1 = TREE_VALUE (arglist);
|
tree arg1 = TREE_VALUE (arglist);
|
tree arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
rtx arg1_rtx, arg2_rtx, arg3_rtx;
|
rtx arg1_rtx, arg2_rtx, arg3_rtx;
|
rtx result;
|
rtx result;
|
rtx insn;
|
rtx insn;
|
|
|
int arg1_align
|
int arg1_align
|
= get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
= get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
int arg2_align
|
int arg2_align
|
= get_pointer_alignment (arg2, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
= get_pointer_alignment (arg2, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
enum machine_mode insn_mode;
|
enum machine_mode insn_mode;
|
|
|
#ifdef HAVE_cmpmemsi
|
#ifdef HAVE_cmpmemsi
|
if (HAVE_cmpmemsi)
|
if (HAVE_cmpmemsi)
|
insn_mode = insn_data[(int) CODE_FOR_cmpmemsi].operand[0].mode;
|
insn_mode = insn_data[(int) CODE_FOR_cmpmemsi].operand[0].mode;
|
else
|
else
|
#endif
|
#endif
|
#ifdef HAVE_cmpstrnsi
|
#ifdef HAVE_cmpstrnsi
|
if (HAVE_cmpstrnsi)
|
if (HAVE_cmpstrnsi)
|
insn_mode = insn_data[(int) CODE_FOR_cmpstrnsi].operand[0].mode;
|
insn_mode = insn_data[(int) CODE_FOR_cmpstrnsi].operand[0].mode;
|
else
|
else
|
#endif
|
#endif
|
return 0;
|
return 0;
|
|
|
/* If we don't have POINTER_TYPE, call the function. */
|
/* If we don't have POINTER_TYPE, call the function. */
|
if (arg1_align == 0 || arg2_align == 0)
|
if (arg1_align == 0 || arg2_align == 0)
|
return 0;
|
return 0;
|
|
|
/* Make a place to write the result of the instruction. */
|
/* Make a place to write the result of the instruction. */
|
result = target;
|
result = target;
|
if (! (result != 0
|
if (! (result != 0
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
result = gen_reg_rtx (insn_mode);
|
result = gen_reg_rtx (insn_mode);
|
|
|
arg1_rtx = get_memory_rtx (arg1, len);
|
arg1_rtx = get_memory_rtx (arg1, len);
|
arg2_rtx = get_memory_rtx (arg2, len);
|
arg2_rtx = get_memory_rtx (arg2, len);
|
arg3_rtx = expand_normal (len);
|
arg3_rtx = expand_normal (len);
|
|
|
/* Set MEM_SIZE as appropriate. */
|
/* Set MEM_SIZE as appropriate. */
|
if (GET_CODE (arg3_rtx) == CONST_INT)
|
if (GET_CODE (arg3_rtx) == CONST_INT)
|
{
|
{
|
set_mem_size (arg1_rtx, arg3_rtx);
|
set_mem_size (arg1_rtx, arg3_rtx);
|
set_mem_size (arg2_rtx, arg3_rtx);
|
set_mem_size (arg2_rtx, arg3_rtx);
|
}
|
}
|
|
|
#ifdef HAVE_cmpmemsi
|
#ifdef HAVE_cmpmemsi
|
if (HAVE_cmpmemsi)
|
if (HAVE_cmpmemsi)
|
insn = gen_cmpmemsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
insn = gen_cmpmemsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
else
|
else
|
#endif
|
#endif
|
#ifdef HAVE_cmpstrnsi
|
#ifdef HAVE_cmpstrnsi
|
if (HAVE_cmpstrnsi)
|
if (HAVE_cmpstrnsi)
|
insn = gen_cmpstrnsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
insn = gen_cmpstrnsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
else
|
else
|
#endif
|
#endif
|
gcc_unreachable ();
|
gcc_unreachable ();
|
|
|
if (insn)
|
if (insn)
|
emit_insn (insn);
|
emit_insn (insn);
|
else
|
else
|
emit_library_call_value (memcmp_libfunc, result, LCT_PURE_MAKE_BLOCK,
|
emit_library_call_value (memcmp_libfunc, result, LCT_PURE_MAKE_BLOCK,
|
TYPE_MODE (integer_type_node), 3,
|
TYPE_MODE (integer_type_node), 3,
|
XEXP (arg1_rtx, 0), Pmode,
|
XEXP (arg1_rtx, 0), Pmode,
|
XEXP (arg2_rtx, 0), Pmode,
|
XEXP (arg2_rtx, 0), Pmode,
|
convert_to_mode (TYPE_MODE (sizetype), arg3_rtx,
|
convert_to_mode (TYPE_MODE (sizetype), arg3_rtx,
|
TYPE_UNSIGNED (sizetype)),
|
TYPE_UNSIGNED (sizetype)),
|
TYPE_MODE (sizetype));
|
TYPE_MODE (sizetype));
|
|
|
/* Return the value in the proper mode for this function. */
|
/* Return the value in the proper mode for this function. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
if (GET_MODE (result) == mode)
|
if (GET_MODE (result) == mode)
|
return result;
|
return result;
|
else if (target != 0)
|
else if (target != 0)
|
{
|
{
|
convert_move (target, result, 0);
|
convert_move (target, result, 0);
|
return target;
|
return target;
|
}
|
}
|
else
|
else
|
return convert_to_mode (mode, result, 0);
|
return convert_to_mode (mode, result, 0);
|
}
|
}
|
#endif
|
#endif
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strcmp builtin. Return 0
|
/* Expand expression EXP, which is a call to the strcmp builtin. Return 0
|
if we failed the caller should emit a normal call, otherwise try to get
|
if we failed the caller should emit a normal call, otherwise try to get
|
the result in TARGET, if convenient. */
|
the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strcmp (tree exp, rtx target, enum machine_mode mode)
|
expand_builtin_strcmp (tree exp, rtx target, enum machine_mode mode)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree result = fold_builtin_strcmp (arglist);
|
tree result = fold_builtin_strcmp (arglist);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
#if defined HAVE_cmpstrsi || defined HAVE_cmpstrnsi
|
#if defined HAVE_cmpstrsi || defined HAVE_cmpstrnsi
|
if (cmpstr_optab[SImode] != CODE_FOR_nothing
|
if (cmpstr_optab[SImode] != CODE_FOR_nothing
|
|| cmpstrn_optab[SImode] != CODE_FOR_nothing)
|
|| cmpstrn_optab[SImode] != CODE_FOR_nothing)
|
{
|
{
|
rtx arg1_rtx, arg2_rtx;
|
rtx arg1_rtx, arg2_rtx;
|
rtx result, insn = NULL_RTX;
|
rtx result, insn = NULL_RTX;
|
tree fndecl, fn;
|
tree fndecl, fn;
|
|
|
tree arg1 = TREE_VALUE (arglist);
|
tree arg1 = TREE_VALUE (arglist);
|
tree arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
int arg1_align
|
int arg1_align
|
= get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
= get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
int arg2_align
|
int arg2_align
|
= get_pointer_alignment (arg2, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
= get_pointer_alignment (arg2, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
|
|
/* If we don't have POINTER_TYPE, call the function. */
|
/* If we don't have POINTER_TYPE, call the function. */
|
if (arg1_align == 0 || arg2_align == 0)
|
if (arg1_align == 0 || arg2_align == 0)
|
return 0;
|
return 0;
|
|
|
/* Stabilize the arguments in case gen_cmpstr(n)si fail. */
|
/* Stabilize the arguments in case gen_cmpstr(n)si fail. */
|
arg1 = builtin_save_expr (arg1);
|
arg1 = builtin_save_expr (arg1);
|
arg2 = builtin_save_expr (arg2);
|
arg2 = builtin_save_expr (arg2);
|
|
|
arg1_rtx = get_memory_rtx (arg1, NULL);
|
arg1_rtx = get_memory_rtx (arg1, NULL);
|
arg2_rtx = get_memory_rtx (arg2, NULL);
|
arg2_rtx = get_memory_rtx (arg2, NULL);
|
|
|
#ifdef HAVE_cmpstrsi
|
#ifdef HAVE_cmpstrsi
|
/* Try to call cmpstrsi. */
|
/* Try to call cmpstrsi. */
|
if (HAVE_cmpstrsi)
|
if (HAVE_cmpstrsi)
|
{
|
{
|
enum machine_mode insn_mode
|
enum machine_mode insn_mode
|
= insn_data[(int) CODE_FOR_cmpstrsi].operand[0].mode;
|
= insn_data[(int) CODE_FOR_cmpstrsi].operand[0].mode;
|
|
|
/* Make a place to write the result of the instruction. */
|
/* Make a place to write the result of the instruction. */
|
result = target;
|
result = target;
|
if (! (result != 0
|
if (! (result != 0
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
result = gen_reg_rtx (insn_mode);
|
result = gen_reg_rtx (insn_mode);
|
|
|
insn = gen_cmpstrsi (result, arg1_rtx, arg2_rtx,
|
insn = gen_cmpstrsi (result, arg1_rtx, arg2_rtx,
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
}
|
}
|
#endif
|
#endif
|
#ifdef HAVE_cmpstrnsi
|
#ifdef HAVE_cmpstrnsi
|
/* Try to determine at least one length and call cmpstrnsi. */
|
/* Try to determine at least one length and call cmpstrnsi. */
|
if (!insn && HAVE_cmpstrnsi)
|
if (!insn && HAVE_cmpstrnsi)
|
{
|
{
|
tree len;
|
tree len;
|
rtx arg3_rtx;
|
rtx arg3_rtx;
|
|
|
enum machine_mode insn_mode
|
enum machine_mode insn_mode
|
= insn_data[(int) CODE_FOR_cmpstrnsi].operand[0].mode;
|
= insn_data[(int) CODE_FOR_cmpstrnsi].operand[0].mode;
|
tree len1 = c_strlen (arg1, 1);
|
tree len1 = c_strlen (arg1, 1);
|
tree len2 = c_strlen (arg2, 1);
|
tree len2 = c_strlen (arg2, 1);
|
|
|
if (len1)
|
if (len1)
|
len1 = size_binop (PLUS_EXPR, ssize_int (1), len1);
|
len1 = size_binop (PLUS_EXPR, ssize_int (1), len1);
|
if (len2)
|
if (len2)
|
len2 = size_binop (PLUS_EXPR, ssize_int (1), len2);
|
len2 = size_binop (PLUS_EXPR, ssize_int (1), len2);
|
|
|
/* If we don't have a constant length for the first, use the length
|
/* If we don't have a constant length for the first, use the length
|
of the second, if we know it. We don't require a constant for
|
of the second, if we know it. We don't require a constant for
|
this case; some cost analysis could be done if both are available
|
this case; some cost analysis could be done if both are available
|
but neither is constant. For now, assume they're equally cheap,
|
but neither is constant. For now, assume they're equally cheap,
|
unless one has side effects. If both strings have constant lengths,
|
unless one has side effects. If both strings have constant lengths,
|
use the smaller. */
|
use the smaller. */
|
|
|
if (!len1)
|
if (!len1)
|
len = len2;
|
len = len2;
|
else if (!len2)
|
else if (!len2)
|
len = len1;
|
len = len1;
|
else if (TREE_SIDE_EFFECTS (len1))
|
else if (TREE_SIDE_EFFECTS (len1))
|
len = len2;
|
len = len2;
|
else if (TREE_SIDE_EFFECTS (len2))
|
else if (TREE_SIDE_EFFECTS (len2))
|
len = len1;
|
len = len1;
|
else if (TREE_CODE (len1) != INTEGER_CST)
|
else if (TREE_CODE (len1) != INTEGER_CST)
|
len = len2;
|
len = len2;
|
else if (TREE_CODE (len2) != INTEGER_CST)
|
else if (TREE_CODE (len2) != INTEGER_CST)
|
len = len1;
|
len = len1;
|
else if (tree_int_cst_lt (len1, len2))
|
else if (tree_int_cst_lt (len1, len2))
|
len = len1;
|
len = len1;
|
else
|
else
|
len = len2;
|
len = len2;
|
|
|
/* If both arguments have side effects, we cannot optimize. */
|
/* If both arguments have side effects, we cannot optimize. */
|
if (!len || TREE_SIDE_EFFECTS (len))
|
if (!len || TREE_SIDE_EFFECTS (len))
|
goto do_libcall;
|
goto do_libcall;
|
|
|
arg3_rtx = expand_normal (len);
|
arg3_rtx = expand_normal (len);
|
|
|
/* Make a place to write the result of the instruction. */
|
/* Make a place to write the result of the instruction. */
|
result = target;
|
result = target;
|
if (! (result != 0
|
if (! (result != 0
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
result = gen_reg_rtx (insn_mode);
|
result = gen_reg_rtx (insn_mode);
|
|
|
insn = gen_cmpstrnsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
insn = gen_cmpstrnsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
}
|
}
|
#endif
|
#endif
|
|
|
if (insn)
|
if (insn)
|
{
|
{
|
emit_insn (insn);
|
emit_insn (insn);
|
|
|
/* Return the value in the proper mode for this function. */
|
/* Return the value in the proper mode for this function. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
if (GET_MODE (result) == mode)
|
if (GET_MODE (result) == mode)
|
return result;
|
return result;
|
if (target == 0)
|
if (target == 0)
|
return convert_to_mode (mode, result, 0);
|
return convert_to_mode (mode, result, 0);
|
convert_move (target, result, 0);
|
convert_move (target, result, 0);
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand the library call ourselves using a stabilized argument
|
/* Expand the library call ourselves using a stabilized argument
|
list to avoid re-evaluating the function's arguments twice. */
|
list to avoid re-evaluating the function's arguments twice. */
|
#ifdef HAVE_cmpstrnsi
|
#ifdef HAVE_cmpstrnsi
|
do_libcall:
|
do_libcall:
|
#endif
|
#endif
|
arglist = build_tree_list (NULL_TREE, arg2);
|
arglist = build_tree_list (NULL_TREE, arg2);
|
arglist = tree_cons (NULL_TREE, arg1, arglist);
|
arglist = tree_cons (NULL_TREE, arg1, arglist);
|
fndecl = get_callee_fndecl (exp);
|
fndecl = get_callee_fndecl (exp);
|
fn = build_function_call_expr (fndecl, arglist);
|
fn = build_function_call_expr (fndecl, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
return expand_call (fn, target, target == const0_rtx);
|
return expand_call (fn, target, target == const0_rtx);
|
}
|
}
|
#endif
|
#endif
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strncmp builtin. Return 0
|
/* Expand expression EXP, which is a call to the strncmp builtin. Return 0
|
if we failed the caller should emit a normal call, otherwise try to get
|
if we failed the caller should emit a normal call, otherwise try to get
|
the result in TARGET, if convenient. */
|
the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strncmp (tree exp, rtx target, enum machine_mode mode)
|
expand_builtin_strncmp (tree exp, rtx target, enum machine_mode mode)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree result = fold_builtin_strncmp (arglist);
|
tree result = fold_builtin_strncmp (arglist);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* If c_strlen can determine an expression for one of the string
|
/* If c_strlen can determine an expression for one of the string
|
lengths, and it doesn't have side effects, then emit cmpstrnsi
|
lengths, and it doesn't have side effects, then emit cmpstrnsi
|
using length MIN(strlen(string)+1, arg3). */
|
using length MIN(strlen(string)+1, arg3). */
|
#ifdef HAVE_cmpstrnsi
|
#ifdef HAVE_cmpstrnsi
|
if (HAVE_cmpstrnsi)
|
if (HAVE_cmpstrnsi)
|
{
|
{
|
tree arg1 = TREE_VALUE (arglist);
|
tree arg1 = TREE_VALUE (arglist);
|
tree arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg3 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree arg3 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len, len1, len2;
|
tree len, len1, len2;
|
rtx arg1_rtx, arg2_rtx, arg3_rtx;
|
rtx arg1_rtx, arg2_rtx, arg3_rtx;
|
rtx result, insn;
|
rtx result, insn;
|
tree fndecl, fn;
|
tree fndecl, fn;
|
|
|
int arg1_align
|
int arg1_align
|
= get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
= get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
int arg2_align
|
int arg2_align
|
= get_pointer_alignment (arg2, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
= get_pointer_alignment (arg2, BIGGEST_ALIGNMENT) / BITS_PER_UNIT;
|
enum machine_mode insn_mode
|
enum machine_mode insn_mode
|
= insn_data[(int) CODE_FOR_cmpstrnsi].operand[0].mode;
|
= insn_data[(int) CODE_FOR_cmpstrnsi].operand[0].mode;
|
|
|
len1 = c_strlen (arg1, 1);
|
len1 = c_strlen (arg1, 1);
|
len2 = c_strlen (arg2, 1);
|
len2 = c_strlen (arg2, 1);
|
|
|
if (len1)
|
if (len1)
|
len1 = size_binop (PLUS_EXPR, ssize_int (1), len1);
|
len1 = size_binop (PLUS_EXPR, ssize_int (1), len1);
|
if (len2)
|
if (len2)
|
len2 = size_binop (PLUS_EXPR, ssize_int (1), len2);
|
len2 = size_binop (PLUS_EXPR, ssize_int (1), len2);
|
|
|
/* If we don't have a constant length for the first, use the length
|
/* If we don't have a constant length for the first, use the length
|
of the second, if we know it. We don't require a constant for
|
of the second, if we know it. We don't require a constant for
|
this case; some cost analysis could be done if both are available
|
this case; some cost analysis could be done if both are available
|
but neither is constant. For now, assume they're equally cheap,
|
but neither is constant. For now, assume they're equally cheap,
|
unless one has side effects. If both strings have constant lengths,
|
unless one has side effects. If both strings have constant lengths,
|
use the smaller. */
|
use the smaller. */
|
|
|
if (!len1)
|
if (!len1)
|
len = len2;
|
len = len2;
|
else if (!len2)
|
else if (!len2)
|
len = len1;
|
len = len1;
|
else if (TREE_SIDE_EFFECTS (len1))
|
else if (TREE_SIDE_EFFECTS (len1))
|
len = len2;
|
len = len2;
|
else if (TREE_SIDE_EFFECTS (len2))
|
else if (TREE_SIDE_EFFECTS (len2))
|
len = len1;
|
len = len1;
|
else if (TREE_CODE (len1) != INTEGER_CST)
|
else if (TREE_CODE (len1) != INTEGER_CST)
|
len = len2;
|
len = len2;
|
else if (TREE_CODE (len2) != INTEGER_CST)
|
else if (TREE_CODE (len2) != INTEGER_CST)
|
len = len1;
|
len = len1;
|
else if (tree_int_cst_lt (len1, len2))
|
else if (tree_int_cst_lt (len1, len2))
|
len = len1;
|
len = len1;
|
else
|
else
|
len = len2;
|
len = len2;
|
|
|
/* If both arguments have side effects, we cannot optimize. */
|
/* If both arguments have side effects, we cannot optimize. */
|
if (!len || TREE_SIDE_EFFECTS (len))
|
if (!len || TREE_SIDE_EFFECTS (len))
|
return 0;
|
return 0;
|
|
|
/* The actual new length parameter is MIN(len,arg3). */
|
/* The actual new length parameter is MIN(len,arg3). */
|
len = fold_build2 (MIN_EXPR, TREE_TYPE (len), len,
|
len = fold_build2 (MIN_EXPR, TREE_TYPE (len), len,
|
fold_convert (TREE_TYPE (len), arg3));
|
fold_convert (TREE_TYPE (len), arg3));
|
|
|
/* If we don't have POINTER_TYPE, call the function. */
|
/* If we don't have POINTER_TYPE, call the function. */
|
if (arg1_align == 0 || arg2_align == 0)
|
if (arg1_align == 0 || arg2_align == 0)
|
return 0;
|
return 0;
|
|
|
/* Make a place to write the result of the instruction. */
|
/* Make a place to write the result of the instruction. */
|
result = target;
|
result = target;
|
if (! (result != 0
|
if (! (result != 0
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REG_P (result) && GET_MODE (result) == insn_mode
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
&& REGNO (result) >= FIRST_PSEUDO_REGISTER))
|
result = gen_reg_rtx (insn_mode);
|
result = gen_reg_rtx (insn_mode);
|
|
|
/* Stabilize the arguments in case gen_cmpstrnsi fails. */
|
/* Stabilize the arguments in case gen_cmpstrnsi fails. */
|
arg1 = builtin_save_expr (arg1);
|
arg1 = builtin_save_expr (arg1);
|
arg2 = builtin_save_expr (arg2);
|
arg2 = builtin_save_expr (arg2);
|
len = builtin_save_expr (len);
|
len = builtin_save_expr (len);
|
|
|
arg1_rtx = get_memory_rtx (arg1, len);
|
arg1_rtx = get_memory_rtx (arg1, len);
|
arg2_rtx = get_memory_rtx (arg2, len);
|
arg2_rtx = get_memory_rtx (arg2, len);
|
arg3_rtx = expand_normal (len);
|
arg3_rtx = expand_normal (len);
|
insn = gen_cmpstrnsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
insn = gen_cmpstrnsi (result, arg1_rtx, arg2_rtx, arg3_rtx,
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
GEN_INT (MIN (arg1_align, arg2_align)));
|
if (insn)
|
if (insn)
|
{
|
{
|
emit_insn (insn);
|
emit_insn (insn);
|
|
|
/* Return the value in the proper mode for this function. */
|
/* Return the value in the proper mode for this function. */
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
mode = TYPE_MODE (TREE_TYPE (exp));
|
if (GET_MODE (result) == mode)
|
if (GET_MODE (result) == mode)
|
return result;
|
return result;
|
if (target == 0)
|
if (target == 0)
|
return convert_to_mode (mode, result, 0);
|
return convert_to_mode (mode, result, 0);
|
convert_move (target, result, 0);
|
convert_move (target, result, 0);
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Expand the library call ourselves using a stabilized argument
|
/* Expand the library call ourselves using a stabilized argument
|
list to avoid re-evaluating the function's arguments twice. */
|
list to avoid re-evaluating the function's arguments twice. */
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = tree_cons (NULL_TREE, arg2, arglist);
|
arglist = tree_cons (NULL_TREE, arg2, arglist);
|
arglist = tree_cons (NULL_TREE, arg1, arglist);
|
arglist = tree_cons (NULL_TREE, arg1, arglist);
|
fndecl = get_callee_fndecl (exp);
|
fndecl = get_callee_fndecl (exp);
|
fn = build_function_call_expr (fndecl, arglist);
|
fn = build_function_call_expr (fndecl, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
return expand_call (fn, target, target == const0_rtx);
|
return expand_call (fn, target, target == const0_rtx);
|
}
|
}
|
#endif
|
#endif
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strcat builtin.
|
/* Expand expression EXP, which is a call to the strcat builtin.
|
Return 0 if we failed the caller should emit a normal call,
|
Return 0 if we failed the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient. */
|
otherwise try to get the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strcat (tree fndecl, tree arglist, rtx target, enum machine_mode mode)
|
expand_builtin_strcat (tree fndecl, tree arglist, rtx target, enum machine_mode mode)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dst = TREE_VALUE (arglist),
|
tree dst = TREE_VALUE (arglist),
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
const char *p = c_getstr (src);
|
const char *p = c_getstr (src);
|
|
|
/* If the string length is zero, return the dst parameter. */
|
/* If the string length is zero, return the dst parameter. */
|
if (p && *p == '\0')
|
if (p && *p == '\0')
|
return expand_expr (dst, target, mode, EXPAND_NORMAL);
|
return expand_expr (dst, target, mode, EXPAND_NORMAL);
|
|
|
if (!optimize_size)
|
if (!optimize_size)
|
{
|
{
|
/* See if we can store by pieces into (dst + strlen(dst)). */
|
/* See if we can store by pieces into (dst + strlen(dst)). */
|
tree newsrc, newdst,
|
tree newsrc, newdst,
|
strlen_fn = implicit_built_in_decls[BUILT_IN_STRLEN];
|
strlen_fn = implicit_built_in_decls[BUILT_IN_STRLEN];
|
rtx insns;
|
rtx insns;
|
|
|
/* Stabilize the argument list. */
|
/* Stabilize the argument list. */
|
newsrc = builtin_save_expr (src);
|
newsrc = builtin_save_expr (src);
|
if (newsrc != src)
|
if (newsrc != src)
|
arglist = build_tree_list (NULL_TREE, newsrc);
|
arglist = build_tree_list (NULL_TREE, newsrc);
|
else
|
else
|
arglist = TREE_CHAIN (arglist); /* Reusing arglist if safe. */
|
arglist = TREE_CHAIN (arglist); /* Reusing arglist if safe. */
|
|
|
dst = builtin_save_expr (dst);
|
dst = builtin_save_expr (dst);
|
|
|
start_sequence ();
|
start_sequence ();
|
|
|
/* Create strlen (dst). */
|
/* Create strlen (dst). */
|
newdst =
|
newdst =
|
build_function_call_expr (strlen_fn,
|
build_function_call_expr (strlen_fn,
|
build_tree_list (NULL_TREE, dst));
|
build_tree_list (NULL_TREE, dst));
|
/* Create (dst + (cast) strlen (dst)). */
|
/* Create (dst + (cast) strlen (dst)). */
|
newdst = fold_convert (TREE_TYPE (dst), newdst);
|
newdst = fold_convert (TREE_TYPE (dst), newdst);
|
newdst = fold_build2 (PLUS_EXPR, TREE_TYPE (dst), dst, newdst);
|
newdst = fold_build2 (PLUS_EXPR, TREE_TYPE (dst), dst, newdst);
|
|
|
newdst = builtin_save_expr (newdst);
|
newdst = builtin_save_expr (newdst);
|
arglist = tree_cons (NULL_TREE, newdst, arglist);
|
arglist = tree_cons (NULL_TREE, newdst, arglist);
|
|
|
if (!expand_builtin_strcpy (fndecl, arglist, target, mode))
|
if (!expand_builtin_strcpy (fndecl, arglist, target, mode))
|
{
|
{
|
end_sequence (); /* Stop sequence. */
|
end_sequence (); /* Stop sequence. */
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Output the entire sequence. */
|
/* Output the entire sequence. */
|
insns = get_insns ();
|
insns = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
emit_insn (insns);
|
emit_insn (insns);
|
|
|
return expand_expr (dst, target, mode, EXPAND_NORMAL);
|
return expand_expr (dst, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strncat builtin.
|
/* Expand expression EXP, which is a call to the strncat builtin.
|
Return 0 if we failed the caller should emit a normal call,
|
Return 0 if we failed the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient. */
|
otherwise try to get the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strncat (tree arglist, rtx target, enum machine_mode mode)
|
expand_builtin_strncat (tree arglist, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist,
|
if (validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strncat (arglist);
|
tree result = fold_builtin_strncat (arglist);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strspn builtin.
|
/* Expand expression EXP, which is a call to the strspn builtin.
|
Return 0 if we failed the caller should emit a normal call,
|
Return 0 if we failed the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient. */
|
otherwise try to get the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strspn (tree arglist, rtx target, enum machine_mode mode)
|
expand_builtin_strspn (tree arglist, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strspn (arglist);
|
tree result = fold_builtin_strspn (arglist);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand expression EXP, which is a call to the strcspn builtin.
|
/* Expand expression EXP, which is a call to the strcspn builtin.
|
Return 0 if we failed the caller should emit a normal call,
|
Return 0 if we failed the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient. */
|
otherwise try to get the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_strcspn (tree arglist, rtx target, enum machine_mode mode)
|
expand_builtin_strcspn (tree arglist, rtx target, enum machine_mode mode)
|
{
|
{
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_strcspn (arglist);
|
tree result = fold_builtin_strcspn (arglist);
|
if (result)
|
if (result)
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
return expand_expr (result, target, mode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to __builtin_saveregs, generating the result in TARGET,
|
/* Expand a call to __builtin_saveregs, generating the result in TARGET,
|
if that's convenient. */
|
if that's convenient. */
|
|
|
rtx
|
rtx
|
expand_builtin_saveregs (void)
|
expand_builtin_saveregs (void)
|
{
|
{
|
rtx val, seq;
|
rtx val, seq;
|
|
|
/* Don't do __builtin_saveregs more than once in a function.
|
/* Don't do __builtin_saveregs more than once in a function.
|
Save the result of the first call and reuse it. */
|
Save the result of the first call and reuse it. */
|
if (saveregs_value != 0)
|
if (saveregs_value != 0)
|
return saveregs_value;
|
return saveregs_value;
|
|
|
/* When this function is called, it means that registers must be
|
/* When this function is called, it means that registers must be
|
saved on entry to this function. So we migrate the call to the
|
saved on entry to this function. So we migrate the call to the
|
first insn of this function. */
|
first insn of this function. */
|
|
|
start_sequence ();
|
start_sequence ();
|
|
|
/* Do whatever the machine needs done in this case. */
|
/* Do whatever the machine needs done in this case. */
|
val = targetm.calls.expand_builtin_saveregs ();
|
val = targetm.calls.expand_builtin_saveregs ();
|
|
|
seq = get_insns ();
|
seq = get_insns ();
|
end_sequence ();
|
end_sequence ();
|
|
|
saveregs_value = val;
|
saveregs_value = val;
|
|
|
/* Put the insns after the NOTE that starts the function. If this
|
/* Put the insns after the NOTE that starts the function. If this
|
is inside a start_sequence, make the outer-level insn chain current, so
|
is inside a start_sequence, make the outer-level insn chain current, so
|
the code is placed at the start of the function. */
|
the code is placed at the start of the function. */
|
push_topmost_sequence ();
|
push_topmost_sequence ();
|
emit_insn_after (seq, entry_of_function ());
|
emit_insn_after (seq, entry_of_function ());
|
pop_topmost_sequence ();
|
pop_topmost_sequence ();
|
|
|
return val;
|
return val;
|
}
|
}
|
|
|
/* __builtin_args_info (N) returns word N of the arg space info
|
/* __builtin_args_info (N) returns word N of the arg space info
|
for the current function. The number and meanings of words
|
for the current function. The number and meanings of words
|
is controlled by the definition of CUMULATIVE_ARGS. */
|
is controlled by the definition of CUMULATIVE_ARGS. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_args_info (tree arglist)
|
expand_builtin_args_info (tree arglist)
|
{
|
{
|
int nwords = sizeof (CUMULATIVE_ARGS) / sizeof (int);
|
int nwords = sizeof (CUMULATIVE_ARGS) / sizeof (int);
|
int *word_ptr = (int *) ¤t_function_args_info;
|
int *word_ptr = (int *) ¤t_function_args_info;
|
|
|
gcc_assert (sizeof (CUMULATIVE_ARGS) % sizeof (int) == 0);
|
gcc_assert (sizeof (CUMULATIVE_ARGS) % sizeof (int) == 0);
|
|
|
if (arglist != 0)
|
if (arglist != 0)
|
{
|
{
|
if (!host_integerp (TREE_VALUE (arglist), 0))
|
if (!host_integerp (TREE_VALUE (arglist), 0))
|
error ("argument of %<__builtin_args_info%> must be constant");
|
error ("argument of %<__builtin_args_info%> must be constant");
|
else
|
else
|
{
|
{
|
HOST_WIDE_INT wordnum = tree_low_cst (TREE_VALUE (arglist), 0);
|
HOST_WIDE_INT wordnum = tree_low_cst (TREE_VALUE (arglist), 0);
|
|
|
if (wordnum < 0 || wordnum >= nwords)
|
if (wordnum < 0 || wordnum >= nwords)
|
error ("argument of %<__builtin_args_info%> out of range");
|
error ("argument of %<__builtin_args_info%> out of range");
|
else
|
else
|
return GEN_INT (word_ptr[wordnum]);
|
return GEN_INT (word_ptr[wordnum]);
|
}
|
}
|
}
|
}
|
else
|
else
|
error ("missing argument in %<__builtin_args_info%>");
|
error ("missing argument in %<__builtin_args_info%>");
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* Expand a call to __builtin_next_arg. */
|
/* Expand a call to __builtin_next_arg. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_next_arg (void)
|
expand_builtin_next_arg (void)
|
{
|
{
|
/* Checking arguments is already done in fold_builtin_next_arg
|
/* Checking arguments is already done in fold_builtin_next_arg
|
that must be called before this function. */
|
that must be called before this function. */
|
return expand_binop (Pmode, add_optab,
|
return expand_binop (Pmode, add_optab,
|
current_function_internal_arg_pointer,
|
current_function_internal_arg_pointer,
|
current_function_arg_offset_rtx,
|
current_function_arg_offset_rtx,
|
NULL_RTX, 0, OPTAB_LIB_WIDEN);
|
NULL_RTX, 0, OPTAB_LIB_WIDEN);
|
}
|
}
|
|
|
/* Make it easier for the backends by protecting the valist argument
|
/* Make it easier for the backends by protecting the valist argument
|
from multiple evaluations. */
|
from multiple evaluations. */
|
|
|
static tree
|
static tree
|
stabilize_va_list (tree valist, int needs_lvalue)
|
stabilize_va_list (tree valist, int needs_lvalue)
|
{
|
{
|
if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
|
if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
|
{
|
{
|
if (TREE_SIDE_EFFECTS (valist))
|
if (TREE_SIDE_EFFECTS (valist))
|
valist = save_expr (valist);
|
valist = save_expr (valist);
|
|
|
/* For this case, the backends will be expecting a pointer to
|
/* For this case, the backends will be expecting a pointer to
|
TREE_TYPE (va_list_type_node), but it's possible we've
|
TREE_TYPE (va_list_type_node), but it's possible we've
|
actually been given an array (an actual va_list_type_node).
|
actually been given an array (an actual va_list_type_node).
|
So fix it. */
|
So fix it. */
|
if (TREE_CODE (TREE_TYPE (valist)) == ARRAY_TYPE)
|
if (TREE_CODE (TREE_TYPE (valist)) == ARRAY_TYPE)
|
{
|
{
|
tree p1 = build_pointer_type (TREE_TYPE (va_list_type_node));
|
tree p1 = build_pointer_type (TREE_TYPE (va_list_type_node));
|
valist = build_fold_addr_expr_with_type (valist, p1);
|
valist = build_fold_addr_expr_with_type (valist, p1);
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
tree pt;
|
tree pt;
|
|
|
if (! needs_lvalue)
|
if (! needs_lvalue)
|
{
|
{
|
if (! TREE_SIDE_EFFECTS (valist))
|
if (! TREE_SIDE_EFFECTS (valist))
|
return valist;
|
return valist;
|
|
|
pt = build_pointer_type (va_list_type_node);
|
pt = build_pointer_type (va_list_type_node);
|
valist = fold_build1 (ADDR_EXPR, pt, valist);
|
valist = fold_build1 (ADDR_EXPR, pt, valist);
|
TREE_SIDE_EFFECTS (valist) = 1;
|
TREE_SIDE_EFFECTS (valist) = 1;
|
}
|
}
|
|
|
if (TREE_SIDE_EFFECTS (valist))
|
if (TREE_SIDE_EFFECTS (valist))
|
valist = save_expr (valist);
|
valist = save_expr (valist);
|
valist = build_fold_indirect_ref (valist);
|
valist = build_fold_indirect_ref (valist);
|
}
|
}
|
|
|
return valist;
|
return valist;
|
}
|
}
|
|
|
/* The "standard" definition of va_list is void*. */
|
/* The "standard" definition of va_list is void*. */
|
|
|
tree
|
tree
|
std_build_builtin_va_list (void)
|
std_build_builtin_va_list (void)
|
{
|
{
|
return ptr_type_node;
|
return ptr_type_node;
|
}
|
}
|
|
|
/* The "standard" implementation of va_start: just assign `nextarg' to
|
/* The "standard" implementation of va_start: just assign `nextarg' to
|
the variable. */
|
the variable. */
|
|
|
void
|
void
|
std_expand_builtin_va_start (tree valist, rtx nextarg)
|
std_expand_builtin_va_start (tree valist, rtx nextarg)
|
{
|
{
|
tree t;
|
tree t;
|
|
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist,
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist,
|
make_tree (ptr_type_node, nextarg));
|
make_tree (ptr_type_node, nextarg));
|
TREE_SIDE_EFFECTS (t) = 1;
|
TREE_SIDE_EFFECTS (t) = 1;
|
|
|
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* Expand ARGLIST, from a call to __builtin_va_start. */
|
/* Expand ARGLIST, from a call to __builtin_va_start. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_va_start (tree arglist)
|
expand_builtin_va_start (tree arglist)
|
{
|
{
|
rtx nextarg;
|
rtx nextarg;
|
tree chain, valist;
|
tree chain, valist;
|
|
|
chain = TREE_CHAIN (arglist);
|
chain = TREE_CHAIN (arglist);
|
|
|
if (!chain)
|
if (!chain)
|
{
|
{
|
error ("too few arguments to function %<va_start%>");
|
error ("too few arguments to function %<va_start%>");
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
if (fold_builtin_next_arg (chain))
|
if (fold_builtin_next_arg (chain))
|
return const0_rtx;
|
return const0_rtx;
|
|
|
nextarg = expand_builtin_next_arg ();
|
nextarg = expand_builtin_next_arg ();
|
valist = stabilize_va_list (TREE_VALUE (arglist), 1);
|
valist = stabilize_va_list (TREE_VALUE (arglist), 1);
|
|
|
#ifdef EXPAND_BUILTIN_VA_START
|
#ifdef EXPAND_BUILTIN_VA_START
|
EXPAND_BUILTIN_VA_START (valist, nextarg);
|
EXPAND_BUILTIN_VA_START (valist, nextarg);
|
#else
|
#else
|
std_expand_builtin_va_start (valist, nextarg);
|
std_expand_builtin_va_start (valist, nextarg);
|
#endif
|
#endif
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* The "standard" implementation of va_arg: read the value from the
|
/* The "standard" implementation of va_arg: read the value from the
|
current (padded) address and increment by the (padded) size. */
|
current (padded) address and increment by the (padded) size. */
|
|
|
tree
|
tree
|
std_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p)
|
std_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p)
|
{
|
{
|
tree addr, t, type_size, rounded_size, valist_tmp;
|
tree addr, t, type_size, rounded_size, valist_tmp;
|
unsigned HOST_WIDE_INT align, boundary;
|
unsigned HOST_WIDE_INT align, boundary;
|
bool indirect;
|
bool indirect;
|
|
|
#ifdef ARGS_GROW_DOWNWARD
|
#ifdef ARGS_GROW_DOWNWARD
|
/* All of the alignment and movement below is for args-grow-up machines.
|
/* All of the alignment and movement below is for args-grow-up machines.
|
As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
|
As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
|
implement their own specialized gimplify_va_arg_expr routines. */
|
implement their own specialized gimplify_va_arg_expr routines. */
|
gcc_unreachable ();
|
gcc_unreachable ();
|
#endif
|
#endif
|
|
|
indirect = pass_by_reference (NULL, TYPE_MODE (type), type, false);
|
indirect = pass_by_reference (NULL, TYPE_MODE (type), type, false);
|
if (indirect)
|
if (indirect)
|
type = build_pointer_type (type);
|
type = build_pointer_type (type);
|
|
|
align = PARM_BOUNDARY / BITS_PER_UNIT;
|
align = PARM_BOUNDARY / BITS_PER_UNIT;
|
boundary = FUNCTION_ARG_BOUNDARY (TYPE_MODE (type), type) / BITS_PER_UNIT;
|
boundary = FUNCTION_ARG_BOUNDARY (TYPE_MODE (type), type) / BITS_PER_UNIT;
|
|
|
/* Hoist the valist value into a temporary for the moment. */
|
/* Hoist the valist value into a temporary for the moment. */
|
valist_tmp = get_initialized_tmp_var (valist, pre_p, NULL);
|
valist_tmp = get_initialized_tmp_var (valist, pre_p, NULL);
|
|
|
/* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
|
/* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
|
requires greater alignment, we must perform dynamic alignment. */
|
requires greater alignment, we must perform dynamic alignment. */
|
if (boundary > align
|
if (boundary > align
|
&& !integer_zerop (TYPE_SIZE (type)))
|
&& !integer_zerop (TYPE_SIZE (type)))
|
{
|
{
|
t = fold_convert (TREE_TYPE (valist), size_int (boundary - 1));
|
t = fold_convert (TREE_TYPE (valist), size_int (boundary - 1));
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp,
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp,
|
build2 (PLUS_EXPR, TREE_TYPE (valist), valist_tmp, t));
|
build2 (PLUS_EXPR, TREE_TYPE (valist), valist_tmp, t));
|
gimplify_and_add (t, pre_p);
|
gimplify_and_add (t, pre_p);
|
|
|
t = fold_convert (TREE_TYPE (valist), size_int (-boundary));
|
t = fold_convert (TREE_TYPE (valist), size_int (-boundary));
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp,
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp,
|
build2 (BIT_AND_EXPR, TREE_TYPE (valist), valist_tmp, t));
|
build2 (BIT_AND_EXPR, TREE_TYPE (valist), valist_tmp, t));
|
gimplify_and_add (t, pre_p);
|
gimplify_and_add (t, pre_p);
|
}
|
}
|
else
|
else
|
boundary = align;
|
boundary = align;
|
|
|
/* If the actual alignment is less than the alignment of the type,
|
/* If the actual alignment is less than the alignment of the type,
|
adjust the type accordingly so that we don't assume strict alignment
|
adjust the type accordingly so that we don't assume strict alignment
|
when deferencing the pointer. */
|
when deferencing the pointer. */
|
boundary *= BITS_PER_UNIT;
|
boundary *= BITS_PER_UNIT;
|
if (boundary < TYPE_ALIGN (type))
|
if (boundary < TYPE_ALIGN (type))
|
{
|
{
|
type = build_variant_type_copy (type);
|
type = build_variant_type_copy (type);
|
TYPE_ALIGN (type) = boundary;
|
TYPE_ALIGN (type) = boundary;
|
}
|
}
|
|
|
/* Compute the rounded size of the type. */
|
/* Compute the rounded size of the type. */
|
type_size = size_in_bytes (type);
|
type_size = size_in_bytes (type);
|
rounded_size = round_up (type_size, align);
|
rounded_size = round_up (type_size, align);
|
|
|
/* Reduce rounded_size so it's sharable with the postqueue. */
|
/* Reduce rounded_size so it's sharable with the postqueue. */
|
gimplify_expr (&rounded_size, pre_p, post_p, is_gimple_val, fb_rvalue);
|
gimplify_expr (&rounded_size, pre_p, post_p, is_gimple_val, fb_rvalue);
|
|
|
/* Get AP. */
|
/* Get AP. */
|
addr = valist_tmp;
|
addr = valist_tmp;
|
if (PAD_VARARGS_DOWN && !integer_zerop (rounded_size))
|
if (PAD_VARARGS_DOWN && !integer_zerop (rounded_size))
|
{
|
{
|
/* Small args are padded downward. */
|
/* Small args are padded downward. */
|
t = fold_build2 (GT_EXPR, sizetype, rounded_size, size_int (align));
|
t = fold_build2 (GT_EXPR, sizetype, rounded_size, size_int (align));
|
t = fold_build3 (COND_EXPR, sizetype, t, size_zero_node,
|
t = fold_build3 (COND_EXPR, sizetype, t, size_zero_node,
|
size_binop (MINUS_EXPR, rounded_size, type_size));
|
size_binop (MINUS_EXPR, rounded_size, type_size));
|
t = fold_convert (TREE_TYPE (addr), t);
|
t = fold_convert (TREE_TYPE (addr), t);
|
addr = fold_build2 (PLUS_EXPR, TREE_TYPE (addr), addr, t);
|
addr = fold_build2 (PLUS_EXPR, TREE_TYPE (addr), addr, t);
|
}
|
}
|
|
|
/* Compute new value for AP. */
|
/* Compute new value for AP. */
|
t = fold_convert (TREE_TYPE (valist), rounded_size);
|
t = fold_convert (TREE_TYPE (valist), rounded_size);
|
t = build2 (PLUS_EXPR, TREE_TYPE (valist), valist_tmp, t);
|
t = build2 (PLUS_EXPR, TREE_TYPE (valist), valist_tmp, t);
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist, t);
|
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist, t);
|
gimplify_and_add (t, pre_p);
|
gimplify_and_add (t, pre_p);
|
|
|
addr = fold_convert (build_pointer_type (type), addr);
|
addr = fold_convert (build_pointer_type (type), addr);
|
|
|
if (indirect)
|
if (indirect)
|
addr = build_va_arg_indirect_ref (addr);
|
addr = build_va_arg_indirect_ref (addr);
|
|
|
return build_va_arg_indirect_ref (addr);
|
return build_va_arg_indirect_ref (addr);
|
}
|
}
|
|
|
/* Build an indirect-ref expression over the given TREE, which represents a
|
/* Build an indirect-ref expression over the given TREE, which represents a
|
piece of a va_arg() expansion. */
|
piece of a va_arg() expansion. */
|
tree
|
tree
|
build_va_arg_indirect_ref (tree addr)
|
build_va_arg_indirect_ref (tree addr)
|
{
|
{
|
addr = build_fold_indirect_ref (addr);
|
addr = build_fold_indirect_ref (addr);
|
|
|
if (flag_mudflap) /* Don't instrument va_arg INDIRECT_REF. */
|
if (flag_mudflap) /* Don't instrument va_arg INDIRECT_REF. */
|
mf_mark (addr);
|
mf_mark (addr);
|
|
|
return addr;
|
return addr;
|
}
|
}
|
|
|
/* Return a dummy expression of type TYPE in order to keep going after an
|
/* Return a dummy expression of type TYPE in order to keep going after an
|
error. */
|
error. */
|
|
|
static tree
|
static tree
|
dummy_object (tree type)
|
dummy_object (tree type)
|
{
|
{
|
tree t = build_int_cst (build_pointer_type (type), 0);
|
tree t = build_int_cst (build_pointer_type (type), 0);
|
return build1 (INDIRECT_REF, type, t);
|
return build1 (INDIRECT_REF, type, t);
|
}
|
}
|
|
|
/* Gimplify __builtin_va_arg, aka VA_ARG_EXPR, which is not really a
|
/* Gimplify __builtin_va_arg, aka VA_ARG_EXPR, which is not really a
|
builtin function, but a very special sort of operator. */
|
builtin function, but a very special sort of operator. */
|
|
|
enum gimplify_status
|
enum gimplify_status
|
gimplify_va_arg_expr (tree *expr_p, tree *pre_p, tree *post_p)
|
gimplify_va_arg_expr (tree *expr_p, tree *pre_p, tree *post_p)
|
{
|
{
|
tree promoted_type, want_va_type, have_va_type;
|
tree promoted_type, want_va_type, have_va_type;
|
tree valist = TREE_OPERAND (*expr_p, 0);
|
tree valist = TREE_OPERAND (*expr_p, 0);
|
tree type = TREE_TYPE (*expr_p);
|
tree type = TREE_TYPE (*expr_p);
|
tree t;
|
tree t;
|
|
|
/* Verify that valist is of the proper type. */
|
/* Verify that valist is of the proper type. */
|
want_va_type = va_list_type_node;
|
want_va_type = va_list_type_node;
|
have_va_type = TREE_TYPE (valist);
|
have_va_type = TREE_TYPE (valist);
|
|
|
if (have_va_type == error_mark_node)
|
if (have_va_type == error_mark_node)
|
return GS_ERROR;
|
return GS_ERROR;
|
|
|
if (TREE_CODE (want_va_type) == ARRAY_TYPE)
|
if (TREE_CODE (want_va_type) == ARRAY_TYPE)
|
{
|
{
|
/* If va_list is an array type, the argument may have decayed
|
/* If va_list is an array type, the argument may have decayed
|
to a pointer type, e.g. by being passed to another function.
|
to a pointer type, e.g. by being passed to another function.
|
In that case, unwrap both types so that we can compare the
|
In that case, unwrap both types so that we can compare the
|
underlying records. */
|
underlying records. */
|
if (TREE_CODE (have_va_type) == ARRAY_TYPE
|
if (TREE_CODE (have_va_type) == ARRAY_TYPE
|
|| POINTER_TYPE_P (have_va_type))
|
|| POINTER_TYPE_P (have_va_type))
|
{
|
{
|
want_va_type = TREE_TYPE (want_va_type);
|
want_va_type = TREE_TYPE (want_va_type);
|
have_va_type = TREE_TYPE (have_va_type);
|
have_va_type = TREE_TYPE (have_va_type);
|
}
|
}
|
}
|
}
|
|
|
if (TYPE_MAIN_VARIANT (want_va_type) != TYPE_MAIN_VARIANT (have_va_type))
|
if (TYPE_MAIN_VARIANT (want_va_type) != TYPE_MAIN_VARIANT (have_va_type))
|
{
|
{
|
error ("first argument to %<va_arg%> not of type %<va_list%>");
|
error ("first argument to %<va_arg%> not of type %<va_list%>");
|
return GS_ERROR;
|
return GS_ERROR;
|
}
|
}
|
|
|
/* Generate a diagnostic for requesting data of a type that cannot
|
/* Generate a diagnostic for requesting data of a type that cannot
|
be passed through `...' due to type promotion at the call site. */
|
be passed through `...' due to type promotion at the call site. */
|
else if ((promoted_type = lang_hooks.types.type_promotes_to (type))
|
else if ((promoted_type = lang_hooks.types.type_promotes_to (type))
|
!= type)
|
!= type)
|
{
|
{
|
static bool gave_help;
|
static bool gave_help;
|
|
|
/* Unfortunately, this is merely undefined, rather than a constraint
|
/* Unfortunately, this is merely undefined, rather than a constraint
|
violation, so we cannot make this an error. If this call is never
|
violation, so we cannot make this an error. If this call is never
|
executed, the program is still strictly conforming. */
|
executed, the program is still strictly conforming. */
|
warning (0, "%qT is promoted to %qT when passed through %<...%>",
|
warning (0, "%qT is promoted to %qT when passed through %<...%>",
|
type, promoted_type);
|
type, promoted_type);
|
if (! gave_help)
|
if (! gave_help)
|
{
|
{
|
gave_help = true;
|
gave_help = true;
|
warning (0, "(so you should pass %qT not %qT to %<va_arg%>)",
|
warning (0, "(so you should pass %qT not %qT to %<va_arg%>)",
|
promoted_type, type);
|
promoted_type, type);
|
}
|
}
|
|
|
/* We can, however, treat "undefined" any way we please.
|
/* We can, however, treat "undefined" any way we please.
|
Call abort to encourage the user to fix the program. */
|
Call abort to encourage the user to fix the program. */
|
inform ("if this code is reached, the program will abort");
|
inform ("if this code is reached, the program will abort");
|
t = build_function_call_expr (implicit_built_in_decls[BUILT_IN_TRAP],
|
t = build_function_call_expr (implicit_built_in_decls[BUILT_IN_TRAP],
|
NULL);
|
NULL);
|
append_to_statement_list (t, pre_p);
|
append_to_statement_list (t, pre_p);
|
|
|
/* This is dead code, but go ahead and finish so that the
|
/* This is dead code, but go ahead and finish so that the
|
mode of the result comes out right. */
|
mode of the result comes out right. */
|
*expr_p = dummy_object (type);
|
*expr_p = dummy_object (type);
|
return GS_ALL_DONE;
|
return GS_ALL_DONE;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Make it easier for the backends by protecting the valist argument
|
/* Make it easier for the backends by protecting the valist argument
|
from multiple evaluations. */
|
from multiple evaluations. */
|
if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
|
if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
|
{
|
{
|
/* For this case, the backends will be expecting a pointer to
|
/* For this case, the backends will be expecting a pointer to
|
TREE_TYPE (va_list_type_node), but it's possible we've
|
TREE_TYPE (va_list_type_node), but it's possible we've
|
actually been given an array (an actual va_list_type_node).
|
actually been given an array (an actual va_list_type_node).
|
So fix it. */
|
So fix it. */
|
if (TREE_CODE (TREE_TYPE (valist)) == ARRAY_TYPE)
|
if (TREE_CODE (TREE_TYPE (valist)) == ARRAY_TYPE)
|
{
|
{
|
tree p1 = build_pointer_type (TREE_TYPE (va_list_type_node));
|
tree p1 = build_pointer_type (TREE_TYPE (va_list_type_node));
|
valist = build_fold_addr_expr_with_type (valist, p1);
|
valist = build_fold_addr_expr_with_type (valist, p1);
|
}
|
}
|
gimplify_expr (&valist, pre_p, post_p, is_gimple_val, fb_rvalue);
|
gimplify_expr (&valist, pre_p, post_p, is_gimple_val, fb_rvalue);
|
}
|
}
|
else
|
else
|
gimplify_expr (&valist, pre_p, post_p, is_gimple_min_lval, fb_lvalue);
|
gimplify_expr (&valist, pre_p, post_p, is_gimple_min_lval, fb_lvalue);
|
|
|
if (!targetm.gimplify_va_arg_expr)
|
if (!targetm.gimplify_va_arg_expr)
|
/* FIXME:Once most targets are converted we should merely
|
/* FIXME:Once most targets are converted we should merely
|
assert this is non-null. */
|
assert this is non-null. */
|
return GS_ALL_DONE;
|
return GS_ALL_DONE;
|
|
|
*expr_p = targetm.gimplify_va_arg_expr (valist, type, pre_p, post_p);
|
*expr_p = targetm.gimplify_va_arg_expr (valist, type, pre_p, post_p);
|
return GS_OK;
|
return GS_OK;
|
}
|
}
|
}
|
}
|
|
|
/* Expand ARGLIST, from a call to __builtin_va_end. */
|
/* Expand ARGLIST, from a call to __builtin_va_end. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_va_end (tree arglist)
|
expand_builtin_va_end (tree arglist)
|
{
|
{
|
tree valist = TREE_VALUE (arglist);
|
tree valist = TREE_VALUE (arglist);
|
|
|
/* Evaluate for side effects, if needed. I hate macros that don't
|
/* Evaluate for side effects, if needed. I hate macros that don't
|
do that. */
|
do that. */
|
if (TREE_SIDE_EFFECTS (valist))
|
if (TREE_SIDE_EFFECTS (valist))
|
expand_expr (valist, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (valist, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* Expand ARGLIST, from a call to __builtin_va_copy. We do this as a
|
/* Expand ARGLIST, from a call to __builtin_va_copy. We do this as a
|
builtin rather than just as an assignment in stdarg.h because of the
|
builtin rather than just as an assignment in stdarg.h because of the
|
nastiness of array-type va_list types. */
|
nastiness of array-type va_list types. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_va_copy (tree arglist)
|
expand_builtin_va_copy (tree arglist)
|
{
|
{
|
tree dst, src, t;
|
tree dst, src, t;
|
|
|
dst = TREE_VALUE (arglist);
|
dst = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
dst = stabilize_va_list (dst, 1);
|
dst = stabilize_va_list (dst, 1);
|
src = stabilize_va_list (src, 0);
|
src = stabilize_va_list (src, 0);
|
|
|
if (TREE_CODE (va_list_type_node) != ARRAY_TYPE)
|
if (TREE_CODE (va_list_type_node) != ARRAY_TYPE)
|
{
|
{
|
t = build2 (MODIFY_EXPR, va_list_type_node, dst, src);
|
t = build2 (MODIFY_EXPR, va_list_type_node, dst, src);
|
TREE_SIDE_EFFECTS (t) = 1;
|
TREE_SIDE_EFFECTS (t) = 1;
|
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
}
|
}
|
else
|
else
|
{
|
{
|
rtx dstb, srcb, size;
|
rtx dstb, srcb, size;
|
|
|
/* Evaluate to pointers. */
|
/* Evaluate to pointers. */
|
dstb = expand_expr (dst, NULL_RTX, Pmode, EXPAND_NORMAL);
|
dstb = expand_expr (dst, NULL_RTX, Pmode, EXPAND_NORMAL);
|
srcb = expand_expr (src, NULL_RTX, Pmode, EXPAND_NORMAL);
|
srcb = expand_expr (src, NULL_RTX, Pmode, EXPAND_NORMAL);
|
size = expand_expr (TYPE_SIZE_UNIT (va_list_type_node), NULL_RTX,
|
size = expand_expr (TYPE_SIZE_UNIT (va_list_type_node), NULL_RTX,
|
VOIDmode, EXPAND_NORMAL);
|
VOIDmode, EXPAND_NORMAL);
|
|
|
dstb = convert_memory_address (Pmode, dstb);
|
dstb = convert_memory_address (Pmode, dstb);
|
srcb = convert_memory_address (Pmode, srcb);
|
srcb = convert_memory_address (Pmode, srcb);
|
|
|
/* "Dereference" to BLKmode memories. */
|
/* "Dereference" to BLKmode memories. */
|
dstb = gen_rtx_MEM (BLKmode, dstb);
|
dstb = gen_rtx_MEM (BLKmode, dstb);
|
set_mem_alias_set (dstb, get_alias_set (TREE_TYPE (TREE_TYPE (dst))));
|
set_mem_alias_set (dstb, get_alias_set (TREE_TYPE (TREE_TYPE (dst))));
|
set_mem_align (dstb, TYPE_ALIGN (va_list_type_node));
|
set_mem_align (dstb, TYPE_ALIGN (va_list_type_node));
|
srcb = gen_rtx_MEM (BLKmode, srcb);
|
srcb = gen_rtx_MEM (BLKmode, srcb);
|
set_mem_alias_set (srcb, get_alias_set (TREE_TYPE (TREE_TYPE (src))));
|
set_mem_alias_set (srcb, get_alias_set (TREE_TYPE (TREE_TYPE (src))));
|
set_mem_align (srcb, TYPE_ALIGN (va_list_type_node));
|
set_mem_align (srcb, TYPE_ALIGN (va_list_type_node));
|
|
|
/* Copy. */
|
/* Copy. */
|
emit_block_move (dstb, srcb, size, BLOCK_OP_NORMAL);
|
emit_block_move (dstb, srcb, size, BLOCK_OP_NORMAL);
|
}
|
}
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* Expand a call to one of the builtin functions __builtin_frame_address or
|
/* Expand a call to one of the builtin functions __builtin_frame_address or
|
__builtin_return_address. */
|
__builtin_return_address. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_frame_address (tree fndecl, tree arglist)
|
expand_builtin_frame_address (tree fndecl, tree arglist)
|
{
|
{
|
/* The argument must be a nonnegative integer constant.
|
/* The argument must be a nonnegative integer constant.
|
It counts the number of frames to scan up the stack.
|
It counts the number of frames to scan up the stack.
|
The value is the return address saved in that frame. */
|
The value is the return address saved in that frame. */
|
if (arglist == 0)
|
if (arglist == 0)
|
/* Warning about missing arg was already issued. */
|
/* Warning about missing arg was already issued. */
|
return const0_rtx;
|
return const0_rtx;
|
else if (! host_integerp (TREE_VALUE (arglist), 1))
|
else if (! host_integerp (TREE_VALUE (arglist), 1))
|
{
|
{
|
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
|
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
|
error ("invalid argument to %<__builtin_frame_address%>");
|
error ("invalid argument to %<__builtin_frame_address%>");
|
else
|
else
|
error ("invalid argument to %<__builtin_return_address%>");
|
error ("invalid argument to %<__builtin_return_address%>");
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
else
|
else
|
{
|
{
|
rtx tem
|
rtx tem
|
= expand_builtin_return_addr (DECL_FUNCTION_CODE (fndecl),
|
= expand_builtin_return_addr (DECL_FUNCTION_CODE (fndecl),
|
tree_low_cst (TREE_VALUE (arglist), 1));
|
tree_low_cst (TREE_VALUE (arglist), 1));
|
|
|
/* Some ports cannot access arbitrary stack frames. */
|
/* Some ports cannot access arbitrary stack frames. */
|
if (tem == NULL)
|
if (tem == NULL)
|
{
|
{
|
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
|
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
|
warning (0, "unsupported argument to %<__builtin_frame_address%>");
|
warning (0, "unsupported argument to %<__builtin_frame_address%>");
|
else
|
else
|
warning (0, "unsupported argument to %<__builtin_return_address%>");
|
warning (0, "unsupported argument to %<__builtin_return_address%>");
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* For __builtin_frame_address, return what we've got. */
|
/* For __builtin_frame_address, return what we've got. */
|
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
|
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
|
return tem;
|
return tem;
|
|
|
if (!REG_P (tem)
|
if (!REG_P (tem)
|
&& ! CONSTANT_P (tem))
|
&& ! CONSTANT_P (tem))
|
tem = copy_to_mode_reg (Pmode, tem);
|
tem = copy_to_mode_reg (Pmode, tem);
|
return tem;
|
return tem;
|
}
|
}
|
}
|
}
|
|
|
/* Expand a call to the alloca builtin, with arguments ARGLIST. Return 0 if
|
/* Expand a call to the alloca builtin, with arguments ARGLIST. Return 0 if
|
we failed and the caller should emit a normal call, otherwise try to get
|
we failed and the caller should emit a normal call, otherwise try to get
|
the result in TARGET, if convenient. */
|
the result in TARGET, if convenient. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_alloca (tree arglist, rtx target)
|
expand_builtin_alloca (tree arglist, rtx target)
|
{
|
{
|
rtx op0;
|
rtx op0;
|
rtx result;
|
rtx result;
|
|
|
/* In -fmudflap-instrumented code, alloca() and __builtin_alloca()
|
/* In -fmudflap-instrumented code, alloca() and __builtin_alloca()
|
should always expand to function calls. These can be intercepted
|
should always expand to function calls. These can be intercepted
|
in libmudflap. */
|
in libmudflap. */
|
if (flag_mudflap)
|
if (flag_mudflap)
|
return 0;
|
return 0;
|
|
|
if (!validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Compute the argument. */
|
/* Compute the argument. */
|
op0 = expand_normal (TREE_VALUE (arglist));
|
op0 = expand_normal (TREE_VALUE (arglist));
|
|
|
/* Allocate the desired space. */
|
/* Allocate the desired space. */
|
result = allocate_dynamic_stack_space (op0, target, BITS_PER_UNIT);
|
result = allocate_dynamic_stack_space (op0, target, BITS_PER_UNIT);
|
result = convert_memory_address (ptr_mode, result);
|
result = convert_memory_address (ptr_mode, result);
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Expand a call to a unary builtin. The arguments are in ARGLIST.
|
/* Expand a call to a unary builtin. The arguments are in ARGLIST.
|
Return 0 if a normal call should be emitted rather than expanding the
|
Return 0 if a normal call should be emitted rather than expanding the
|
function in-line. If convenient, the result should be placed in TARGET.
|
function in-line. If convenient, the result should be placed in TARGET.
|
SUBTARGET may be used as the target for computing one of EXP's operands. */
|
SUBTARGET may be used as the target for computing one of EXP's operands. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_unop (enum machine_mode target_mode, tree arglist, rtx target,
|
expand_builtin_unop (enum machine_mode target_mode, tree arglist, rtx target,
|
rtx subtarget, optab op_optab)
|
rtx subtarget, optab op_optab)
|
{
|
{
|
rtx op0;
|
rtx op0;
|
if (!validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Compute the argument. */
|
/* Compute the argument. */
|
op0 = expand_expr (TREE_VALUE (arglist), subtarget, VOIDmode, 0);
|
op0 = expand_expr (TREE_VALUE (arglist), subtarget, VOIDmode, 0);
|
/* Compute op, into TARGET if possible.
|
/* Compute op, into TARGET if possible.
|
Set TARGET to wherever the result comes back. */
|
Set TARGET to wherever the result comes back. */
|
target = expand_unop (TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist))),
|
target = expand_unop (TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist))),
|
op_optab, op0, target, 1);
|
op_optab, op0, target, 1);
|
gcc_assert (target);
|
gcc_assert (target);
|
|
|
return convert_to_mode (target_mode, target, 0);
|
return convert_to_mode (target_mode, target, 0);
|
}
|
}
|
|
|
/* If the string passed to fputs is a constant and is one character
|
/* If the string passed to fputs is a constant and is one character
|
long, we attempt to transform this call into __builtin_fputc(). */
|
long, we attempt to transform this call into __builtin_fputc(). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_fputs (tree arglist, rtx target, bool unlocked)
|
expand_builtin_fputs (tree arglist, rtx target, bool unlocked)
|
{
|
{
|
/* Verify the arguments in the original call. */
|
/* Verify the arguments in the original call. */
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree result = fold_builtin_fputs (arglist, (target == const0_rtx),
|
tree result = fold_builtin_fputs (arglist, (target == const0_rtx),
|
unlocked, NULL_TREE);
|
unlocked, NULL_TREE);
|
if (result)
|
if (result)
|
return expand_expr (result, target, VOIDmode, EXPAND_NORMAL);
|
return expand_expr (result, target, VOIDmode, EXPAND_NORMAL);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to __builtin_expect. We return our argument and emit a
|
/* Expand a call to __builtin_expect. We return our argument and emit a
|
NOTE_INSN_EXPECTED_VALUE note. This is the expansion of __builtin_expect in
|
NOTE_INSN_EXPECTED_VALUE note. This is the expansion of __builtin_expect in
|
a non-jump context. */
|
a non-jump context. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_expect (tree arglist, rtx target)
|
expand_builtin_expect (tree arglist, rtx target)
|
{
|
{
|
tree exp, c;
|
tree exp, c;
|
rtx note, rtx_c;
|
rtx note, rtx_c;
|
|
|
if (arglist == NULL_TREE
|
if (arglist == NULL_TREE
|
|| TREE_CHAIN (arglist) == NULL_TREE)
|
|| TREE_CHAIN (arglist) == NULL_TREE)
|
return const0_rtx;
|
return const0_rtx;
|
exp = TREE_VALUE (arglist);
|
exp = TREE_VALUE (arglist);
|
c = TREE_VALUE (TREE_CHAIN (arglist));
|
c = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
if (TREE_CODE (c) != INTEGER_CST)
|
if (TREE_CODE (c) != INTEGER_CST)
|
{
|
{
|
error ("second argument to %<__builtin_expect%> must be a constant");
|
error ("second argument to %<__builtin_expect%> must be a constant");
|
c = integer_zero_node;
|
c = integer_zero_node;
|
}
|
}
|
|
|
target = expand_expr (exp, target, VOIDmode, EXPAND_NORMAL);
|
target = expand_expr (exp, target, VOIDmode, EXPAND_NORMAL);
|
|
|
/* Don't bother with expected value notes for integral constants. */
|
/* Don't bother with expected value notes for integral constants. */
|
if (flag_guess_branch_prob && GET_CODE (target) != CONST_INT)
|
if (flag_guess_branch_prob && GET_CODE (target) != CONST_INT)
|
{
|
{
|
/* We do need to force this into a register so that we can be
|
/* We do need to force this into a register so that we can be
|
moderately sure to be able to correctly interpret the branch
|
moderately sure to be able to correctly interpret the branch
|
condition later. */
|
condition later. */
|
target = force_reg (GET_MODE (target), target);
|
target = force_reg (GET_MODE (target), target);
|
|
|
rtx_c = expand_expr (c, NULL_RTX, GET_MODE (target), EXPAND_NORMAL);
|
rtx_c = expand_expr (c, NULL_RTX, GET_MODE (target), EXPAND_NORMAL);
|
|
|
note = emit_note (NOTE_INSN_EXPECTED_VALUE);
|
note = emit_note (NOTE_INSN_EXPECTED_VALUE);
|
NOTE_EXPECTED_VALUE (note) = gen_rtx_EQ (VOIDmode, target, rtx_c);
|
NOTE_EXPECTED_VALUE (note) = gen_rtx_EQ (VOIDmode, target, rtx_c);
|
}
|
}
|
|
|
return target;
|
return target;
|
}
|
}
|
|
|
/* Like expand_builtin_expect, except do this in a jump context. This is
|
/* Like expand_builtin_expect, except do this in a jump context. This is
|
called from do_jump if the conditional is a __builtin_expect. Return either
|
called from do_jump if the conditional is a __builtin_expect. Return either
|
a list of insns to emit the jump or NULL if we cannot optimize
|
a list of insns to emit the jump or NULL if we cannot optimize
|
__builtin_expect. We need to optimize this at jump time so that machines
|
__builtin_expect. We need to optimize this at jump time so that machines
|
like the PowerPC don't turn the test into a SCC operation, and then jump
|
like the PowerPC don't turn the test into a SCC operation, and then jump
|
based on the test being 0/1. */
|
based on the test being 0/1. */
|
|
|
rtx
|
rtx
|
expand_builtin_expect_jump (tree exp, rtx if_false_label, rtx if_true_label)
|
expand_builtin_expect_jump (tree exp, rtx if_false_label, rtx if_true_label)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arg0 = TREE_VALUE (arglist);
|
tree arg0 = TREE_VALUE (arglist);
|
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
rtx ret = NULL_RTX;
|
rtx ret = NULL_RTX;
|
|
|
/* Only handle __builtin_expect (test, 0) and
|
/* Only handle __builtin_expect (test, 0) and
|
__builtin_expect (test, 1). */
|
__builtin_expect (test, 1). */
|
if (TREE_CODE (TREE_TYPE (arg1)) == INTEGER_TYPE
|
if (TREE_CODE (TREE_TYPE (arg1)) == INTEGER_TYPE
|
&& (integer_zerop (arg1) || integer_onep (arg1)))
|
&& (integer_zerop (arg1) || integer_onep (arg1)))
|
{
|
{
|
rtx insn, drop_through_label, temp;
|
rtx insn, drop_through_label, temp;
|
|
|
/* Expand the jump insns. */
|
/* Expand the jump insns. */
|
start_sequence ();
|
start_sequence ();
|
do_jump (arg0, if_false_label, if_true_label);
|
do_jump (arg0, if_false_label, if_true_label);
|
ret = get_insns ();
|
ret = get_insns ();
|
|
|
drop_through_label = get_last_insn ();
|
drop_through_label = get_last_insn ();
|
if (drop_through_label && NOTE_P (drop_through_label))
|
if (drop_through_label && NOTE_P (drop_through_label))
|
drop_through_label = prev_nonnote_insn (drop_through_label);
|
drop_through_label = prev_nonnote_insn (drop_through_label);
|
if (drop_through_label && !LABEL_P (drop_through_label))
|
if (drop_through_label && !LABEL_P (drop_through_label))
|
drop_through_label = NULL_RTX;
|
drop_through_label = NULL_RTX;
|
end_sequence ();
|
end_sequence ();
|
|
|
if (! if_true_label)
|
if (! if_true_label)
|
if_true_label = drop_through_label;
|
if_true_label = drop_through_label;
|
if (! if_false_label)
|
if (! if_false_label)
|
if_false_label = drop_through_label;
|
if_false_label = drop_through_label;
|
|
|
/* Go through and add the expect's to each of the conditional jumps. */
|
/* Go through and add the expect's to each of the conditional jumps. */
|
insn = ret;
|
insn = ret;
|
while (insn != NULL_RTX)
|
while (insn != NULL_RTX)
|
{
|
{
|
rtx next = NEXT_INSN (insn);
|
rtx next = NEXT_INSN (insn);
|
|
|
if (JUMP_P (insn) && any_condjump_p (insn))
|
if (JUMP_P (insn) && any_condjump_p (insn))
|
{
|
{
|
rtx ifelse = SET_SRC (pc_set (insn));
|
rtx ifelse = SET_SRC (pc_set (insn));
|
rtx then_dest = XEXP (ifelse, 1);
|
rtx then_dest = XEXP (ifelse, 1);
|
rtx else_dest = XEXP (ifelse, 2);
|
rtx else_dest = XEXP (ifelse, 2);
|
int taken = -1;
|
int taken = -1;
|
|
|
/* First check if we recognize any of the labels. */
|
/* First check if we recognize any of the labels. */
|
if (GET_CODE (then_dest) == LABEL_REF
|
if (GET_CODE (then_dest) == LABEL_REF
|
&& XEXP (then_dest, 0) == if_true_label)
|
&& XEXP (then_dest, 0) == if_true_label)
|
taken = 1;
|
taken = 1;
|
else if (GET_CODE (then_dest) == LABEL_REF
|
else if (GET_CODE (then_dest) == LABEL_REF
|
&& XEXP (then_dest, 0) == if_false_label)
|
&& XEXP (then_dest, 0) == if_false_label)
|
taken = 0;
|
taken = 0;
|
else if (GET_CODE (else_dest) == LABEL_REF
|
else if (GET_CODE (else_dest) == LABEL_REF
|
&& XEXP (else_dest, 0) == if_false_label)
|
&& XEXP (else_dest, 0) == if_false_label)
|
taken = 1;
|
taken = 1;
|
else if (GET_CODE (else_dest) == LABEL_REF
|
else if (GET_CODE (else_dest) == LABEL_REF
|
&& XEXP (else_dest, 0) == if_true_label)
|
&& XEXP (else_dest, 0) == if_true_label)
|
taken = 0;
|
taken = 0;
|
/* Otherwise check where we drop through. */
|
/* Otherwise check where we drop through. */
|
else if (else_dest == pc_rtx)
|
else if (else_dest == pc_rtx)
|
{
|
{
|
if (next && NOTE_P (next))
|
if (next && NOTE_P (next))
|
next = next_nonnote_insn (next);
|
next = next_nonnote_insn (next);
|
|
|
if (next && JUMP_P (next)
|
if (next && JUMP_P (next)
|
&& any_uncondjump_p (next))
|
&& any_uncondjump_p (next))
|
temp = XEXP (SET_SRC (pc_set (next)), 0);
|
temp = XEXP (SET_SRC (pc_set (next)), 0);
|
else
|
else
|
temp = next;
|
temp = next;
|
|
|
/* TEMP is either a CODE_LABEL, NULL_RTX or something
|
/* TEMP is either a CODE_LABEL, NULL_RTX or something
|
else that can't possibly match either target label. */
|
else that can't possibly match either target label. */
|
if (temp == if_false_label)
|
if (temp == if_false_label)
|
taken = 1;
|
taken = 1;
|
else if (temp == if_true_label)
|
else if (temp == if_true_label)
|
taken = 0;
|
taken = 0;
|
}
|
}
|
else if (then_dest == pc_rtx)
|
else if (then_dest == pc_rtx)
|
{
|
{
|
if (next && NOTE_P (next))
|
if (next && NOTE_P (next))
|
next = next_nonnote_insn (next);
|
next = next_nonnote_insn (next);
|
|
|
if (next && JUMP_P (next)
|
if (next && JUMP_P (next)
|
&& any_uncondjump_p (next))
|
&& any_uncondjump_p (next))
|
temp = XEXP (SET_SRC (pc_set (next)), 0);
|
temp = XEXP (SET_SRC (pc_set (next)), 0);
|
else
|
else
|
temp = next;
|
temp = next;
|
|
|
if (temp == if_false_label)
|
if (temp == if_false_label)
|
taken = 0;
|
taken = 0;
|
else if (temp == if_true_label)
|
else if (temp == if_true_label)
|
taken = 1;
|
taken = 1;
|
}
|
}
|
|
|
if (taken != -1)
|
if (taken != -1)
|
{
|
{
|
/* If the test is expected to fail, reverse the
|
/* If the test is expected to fail, reverse the
|
probabilities. */
|
probabilities. */
|
if (integer_zerop (arg1))
|
if (integer_zerop (arg1))
|
taken = 1 - taken;
|
taken = 1 - taken;
|
predict_insn_def (insn, PRED_BUILTIN_EXPECT, taken);
|
predict_insn_def (insn, PRED_BUILTIN_EXPECT, taken);
|
}
|
}
|
}
|
}
|
|
|
insn = next;
|
insn = next;
|
}
|
}
|
}
|
}
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
void
|
void
|
expand_builtin_trap (void)
|
expand_builtin_trap (void)
|
{
|
{
|
#ifdef HAVE_trap
|
#ifdef HAVE_trap
|
if (HAVE_trap)
|
if (HAVE_trap)
|
emit_insn (gen_trap ());
|
emit_insn (gen_trap ());
|
else
|
else
|
#endif
|
#endif
|
emit_library_call (abort_libfunc, LCT_NORETURN, VOIDmode, 0);
|
emit_library_call (abort_libfunc, LCT_NORETURN, VOIDmode, 0);
|
emit_barrier ();
|
emit_barrier ();
|
}
|
}
|
|
|
/* Expand a call to fabs, fabsf or fabsl with arguments ARGLIST.
|
/* Expand a call to fabs, fabsf or fabsl with arguments ARGLIST.
|
Return 0 if a normal call should be emitted rather than expanding
|
Return 0 if a normal call should be emitted rather than expanding
|
the function inline. If convenient, the result should be placed
|
the function inline. If convenient, the result should be placed
|
in TARGET. SUBTARGET may be used as the target for computing
|
in TARGET. SUBTARGET may be used as the target for computing
|
the operand. */
|
the operand. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_fabs (tree arglist, rtx target, rtx subtarget)
|
expand_builtin_fabs (tree arglist, rtx target, rtx subtarget)
|
{
|
{
|
enum machine_mode mode;
|
enum machine_mode mode;
|
tree arg;
|
tree arg;
|
rtx op0;
|
rtx op0;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
mode = TYPE_MODE (TREE_TYPE (arg));
|
mode = TYPE_MODE (TREE_TYPE (arg));
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
op0 = expand_expr (arg, subtarget, VOIDmode, 0);
|
return expand_abs (mode, op0, target, 0, safe_from_p (target, arg, 1));
|
return expand_abs (mode, op0, target, 0, safe_from_p (target, arg, 1));
|
}
|
}
|
|
|
/* Expand a call to copysign, copysignf, or copysignl with arguments ARGLIST.
|
/* Expand a call to copysign, copysignf, or copysignl with arguments ARGLIST.
|
Return NULL is a normal call should be emitted rather than expanding the
|
Return NULL is a normal call should be emitted rather than expanding the
|
function inline. If convenient, the result should be placed in TARGET.
|
function inline. If convenient, the result should be placed in TARGET.
|
SUBTARGET may be used as the target for computing the operand. */
|
SUBTARGET may be used as the target for computing the operand. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_copysign (tree arglist, rtx target, rtx subtarget)
|
expand_builtin_copysign (tree arglist, rtx target, rtx subtarget)
|
{
|
{
|
rtx op0, op1;
|
rtx op0, op1;
|
tree arg;
|
tree arg;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
op0 = expand_expr (arg, subtarget, VOIDmode, EXPAND_NORMAL);
|
op0 = expand_expr (arg, subtarget, VOIDmode, EXPAND_NORMAL);
|
|
|
arg = TREE_VALUE (TREE_CHAIN (arglist));
|
arg = TREE_VALUE (TREE_CHAIN (arglist));
|
op1 = expand_normal (arg);
|
op1 = expand_normal (arg);
|
|
|
return expand_copysign (op0, op1, target);
|
return expand_copysign (op0, op1, target);
|
}
|
}
|
|
|
/* Create a new constant string literal and return a char* pointer to it.
|
/* Create a new constant string literal and return a char* pointer to it.
|
The STRING_CST value is the LEN characters at STR. */
|
The STRING_CST value is the LEN characters at STR. */
|
tree
|
tree
|
build_string_literal (int len, const char *str)
|
build_string_literal (int len, const char *str)
|
{
|
{
|
tree t, elem, index, type;
|
tree t, elem, index, type;
|
|
|
t = build_string (len, str);
|
t = build_string (len, str);
|
elem = build_type_variant (char_type_node, 1, 0);
|
elem = build_type_variant (char_type_node, 1, 0);
|
index = build_index_type (build_int_cst (NULL_TREE, len - 1));
|
index = build_index_type (build_int_cst (NULL_TREE, len - 1));
|
type = build_array_type (elem, index);
|
type = build_array_type (elem, index);
|
TREE_TYPE (t) = type;
|
TREE_TYPE (t) = type;
|
TREE_CONSTANT (t) = 1;
|
TREE_CONSTANT (t) = 1;
|
TREE_INVARIANT (t) = 1;
|
TREE_INVARIANT (t) = 1;
|
TREE_READONLY (t) = 1;
|
TREE_READONLY (t) = 1;
|
TREE_STATIC (t) = 1;
|
TREE_STATIC (t) = 1;
|
|
|
type = build_pointer_type (type);
|
type = build_pointer_type (type);
|
t = build1 (ADDR_EXPR, type, t);
|
t = build1 (ADDR_EXPR, type, t);
|
|
|
type = build_pointer_type (elem);
|
type = build_pointer_type (elem);
|
t = build1 (NOP_EXPR, type, t);
|
t = build1 (NOP_EXPR, type, t);
|
return t;
|
return t;
|
}
|
}
|
|
|
/* Expand EXP, a call to printf or printf_unlocked.
|
/* Expand EXP, a call to printf or printf_unlocked.
|
Return 0 if a normal call should be emitted rather than transforming
|
Return 0 if a normal call should be emitted rather than transforming
|
the function inline. If convenient, the result should be placed in
|
the function inline. If convenient, the result should be placed in
|
TARGET with mode MODE. UNLOCKED indicates this is a printf_unlocked
|
TARGET with mode MODE. UNLOCKED indicates this is a printf_unlocked
|
call. */
|
call. */
|
static rtx
|
static rtx
|
expand_builtin_printf (tree exp, rtx target, enum machine_mode mode,
|
expand_builtin_printf (tree exp, rtx target, enum machine_mode mode,
|
bool unlocked)
|
bool unlocked)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
/* If we're using an unlocked function, assume the other unlocked
|
/* If we're using an unlocked function, assume the other unlocked
|
functions exist explicitly. */
|
functions exist explicitly. */
|
tree const fn_putchar = unlocked ? built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED]
|
tree const fn_putchar = unlocked ? built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED]
|
: implicit_built_in_decls[BUILT_IN_PUTCHAR];
|
: implicit_built_in_decls[BUILT_IN_PUTCHAR];
|
tree const fn_puts = unlocked ? built_in_decls[BUILT_IN_PUTS_UNLOCKED]
|
tree const fn_puts = unlocked ? built_in_decls[BUILT_IN_PUTS_UNLOCKED]
|
: implicit_built_in_decls[BUILT_IN_PUTS];
|
: implicit_built_in_decls[BUILT_IN_PUTS];
|
const char *fmt_str;
|
const char *fmt_str;
|
tree fn, fmt, arg;
|
tree fn, fmt, arg;
|
|
|
/* If the return value is used, don't do the transformation. */
|
/* If the return value is used, don't do the transformation. */
|
if (target != const0_rtx)
|
if (target != const0_rtx)
|
return 0;
|
return 0;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return 0;
|
return 0;
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "%s\n", call __builtin_puts(arg). */
|
/* If the format specifier was "%s\n", call __builtin_puts(arg). */
|
if (strcmp (fmt_str, target_percent_s_newline) == 0)
|
if (strcmp (fmt_str, target_percent_s_newline) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
fn = fn_puts;
|
fn = fn_puts;
|
}
|
}
|
/* If the format specifier was "%c", call __builtin_putchar(arg). */
|
/* If the format specifier was "%c", call __builtin_putchar(arg). */
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
fn = fn_putchar;
|
fn = fn_putchar;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* We can't handle anything else with % args or %% ... yet. */
|
/* We can't handle anything else with % args or %% ... yet. */
|
if (strchr (fmt_str, target_percent))
|
if (strchr (fmt_str, target_percent))
|
return 0;
|
return 0;
|
|
|
if (arglist)
|
if (arglist)
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "", printf does nothing. */
|
/* If the format specifier was "", printf does nothing. */
|
if (fmt_str[0] == '\0')
|
if (fmt_str[0] == '\0')
|
return const0_rtx;
|
return const0_rtx;
|
/* If the format specifier has length of 1, call putchar. */
|
/* If the format specifier has length of 1, call putchar. */
|
if (fmt_str[1] == '\0')
|
if (fmt_str[1] == '\0')
|
{
|
{
|
/* Given printf("c"), (where c is any one character,)
|
/* Given printf("c"), (where c is any one character,)
|
convert "c"[0] to an int and pass that to the replacement
|
convert "c"[0] to an int and pass that to the replacement
|
function. */
|
function. */
|
arg = build_int_cst (NULL_TREE, fmt_str[0]);
|
arg = build_int_cst (NULL_TREE, fmt_str[0]);
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
fn = fn_putchar;
|
fn = fn_putchar;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* If the format specifier was "string\n", call puts("string"). */
|
/* If the format specifier was "string\n", call puts("string"). */
|
size_t len = strlen (fmt_str);
|
size_t len = strlen (fmt_str);
|
if ((unsigned char)fmt_str[len - 1] == target_newline)
|
if ((unsigned char)fmt_str[len - 1] == target_newline)
|
{
|
{
|
/* Create a NUL-terminated string that's one char shorter
|
/* Create a NUL-terminated string that's one char shorter
|
than the original, stripping off the trailing '\n'. */
|
than the original, stripping off the trailing '\n'. */
|
char *newstr = alloca (len);
|
char *newstr = alloca (len);
|
memcpy (newstr, fmt_str, len - 1);
|
memcpy (newstr, fmt_str, len - 1);
|
newstr[len - 1] = 0;
|
newstr[len - 1] = 0;
|
|
|
arg = build_string_literal (len, newstr);
|
arg = build_string_literal (len, newstr);
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
fn = fn_puts;
|
fn = fn_puts;
|
}
|
}
|
else
|
else
|
/* We'd like to arrange to call fputs(string,stdout) here,
|
/* We'd like to arrange to call fputs(string,stdout) here,
|
but we need stdout and don't have a way to get it yet. */
|
but we need stdout and don't have a way to get it yet. */
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
fn = build_function_call_expr (fn, arglist);
|
fn = build_function_call_expr (fn, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* Expand EXP, a call to fprintf or fprintf_unlocked.
|
/* Expand EXP, a call to fprintf or fprintf_unlocked.
|
Return 0 if a normal call should be emitted rather than transforming
|
Return 0 if a normal call should be emitted rather than transforming
|
the function inline. If convenient, the result should be placed in
|
the function inline. If convenient, the result should be placed in
|
TARGET with mode MODE. UNLOCKED indicates this is a fprintf_unlocked
|
TARGET with mode MODE. UNLOCKED indicates this is a fprintf_unlocked
|
call. */
|
call. */
|
static rtx
|
static rtx
|
expand_builtin_fprintf (tree exp, rtx target, enum machine_mode mode,
|
expand_builtin_fprintf (tree exp, rtx target, enum machine_mode mode,
|
bool unlocked)
|
bool unlocked)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
/* If we're using an unlocked function, assume the other unlocked
|
/* If we're using an unlocked function, assume the other unlocked
|
functions exist explicitly. */
|
functions exist explicitly. */
|
tree const fn_fputc = unlocked ? built_in_decls[BUILT_IN_FPUTC_UNLOCKED]
|
tree const fn_fputc = unlocked ? built_in_decls[BUILT_IN_FPUTC_UNLOCKED]
|
: implicit_built_in_decls[BUILT_IN_FPUTC];
|
: implicit_built_in_decls[BUILT_IN_FPUTC];
|
tree const fn_fputs = unlocked ? built_in_decls[BUILT_IN_FPUTS_UNLOCKED]
|
tree const fn_fputs = unlocked ? built_in_decls[BUILT_IN_FPUTS_UNLOCKED]
|
: implicit_built_in_decls[BUILT_IN_FPUTS];
|
: implicit_built_in_decls[BUILT_IN_FPUTS];
|
const char *fmt_str;
|
const char *fmt_str;
|
tree fn, fmt, fp, arg;
|
tree fn, fmt, fp, arg;
|
|
|
/* If the return value is used, don't do the transformation. */
|
/* If the return value is used, don't do the transformation. */
|
if (target != const0_rtx)
|
if (target != const0_rtx)
|
return 0;
|
return 0;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fp = TREE_VALUE (arglist);
|
fp = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fp)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fp)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return 0;
|
return 0;
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "%s", call __builtin_fputs(arg,fp). */
|
/* If the format specifier was "%s", call __builtin_fputs(arg,fp). */
|
if (strcmp (fmt_str, target_percent_s) == 0)
|
if (strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
fn = fn_fputs;
|
fn = fn_fputs;
|
}
|
}
|
/* If the format specifier was "%c", call __builtin_fputc(arg,fp). */
|
/* If the format specifier was "%c", call __builtin_fputc(arg,fp). */
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
fn = fn_fputc;
|
fn = fn_fputc;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* We can't handle anything else with % args or %% ... yet. */
|
/* We can't handle anything else with % args or %% ... yet. */
|
if (strchr (fmt_str, target_percent))
|
if (strchr (fmt_str, target_percent))
|
return 0;
|
return 0;
|
|
|
if (arglist)
|
if (arglist)
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "", fprintf does nothing. */
|
/* If the format specifier was "", fprintf does nothing. */
|
if (fmt_str[0] == '\0')
|
if (fmt_str[0] == '\0')
|
{
|
{
|
/* Evaluate and ignore FILE* argument for side-effects. */
|
/* Evaluate and ignore FILE* argument for side-effects. */
|
expand_expr (fp, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (fp, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* When "string" doesn't contain %, replace all cases of
|
/* When "string" doesn't contain %, replace all cases of
|
fprintf(stream,string) with fputs(string,stream). The fputs
|
fprintf(stream,string) with fputs(string,stream). The fputs
|
builtin will take care of special cases like length == 1. */
|
builtin will take care of special cases like length == 1. */
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
fn = fn_fputs;
|
fn = fn_fputs;
|
}
|
}
|
|
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
fn = build_function_call_expr (fn, arglist);
|
fn = build_function_call_expr (fn, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* Expand a call to sprintf with argument list ARGLIST. Return 0 if
|
/* Expand a call to sprintf with argument list ARGLIST. Return 0 if
|
a normal call should be emitted rather than expanding the function
|
a normal call should be emitted rather than expanding the function
|
inline. If convenient, the result should be placed in TARGET with
|
inline. If convenient, the result should be placed in TARGET with
|
mode MODE. */
|
mode MODE. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_sprintf (tree arglist, rtx target, enum machine_mode mode)
|
expand_builtin_sprintf (tree arglist, rtx target, enum machine_mode mode)
|
{
|
{
|
tree orig_arglist, dest, fmt;
|
tree orig_arglist, dest, fmt;
|
const char *fmt_str;
|
const char *fmt_str;
|
|
|
orig_arglist = arglist;
|
orig_arglist = arglist;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (dest)))
|
if (! POINTER_TYPE_P (TREE_TYPE (dest)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return 0;
|
return 0;
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* If the format doesn't contain % args or %%, use strcpy. */
|
/* If the format doesn't contain % args or %%, use strcpy. */
|
if (strchr (fmt_str, target_percent) == 0)
|
if (strchr (fmt_str, target_percent) == 0)
|
{
|
{
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
tree exp;
|
tree exp;
|
|
|
if (arglist || ! fn)
|
if (arglist || ! fn)
|
return 0;
|
return 0;
|
expand_expr (build_function_call_expr (fn, orig_arglist),
|
expand_expr (build_function_call_expr (fn, orig_arglist),
|
const0_rtx, VOIDmode, EXPAND_NORMAL);
|
const0_rtx, VOIDmode, EXPAND_NORMAL);
|
if (target == const0_rtx)
|
if (target == const0_rtx)
|
return const0_rtx;
|
return const0_rtx;
|
exp = build_int_cst (NULL_TREE, strlen (fmt_str));
|
exp = build_int_cst (NULL_TREE, strlen (fmt_str));
|
return expand_expr (exp, target, mode, EXPAND_NORMAL);
|
return expand_expr (exp, target, mode, EXPAND_NORMAL);
|
}
|
}
|
/* If the format is "%s", use strcpy if the result isn't used. */
|
/* If the format is "%s", use strcpy if the result isn't used. */
|
else if (strcmp (fmt_str, target_percent_s) == 0)
|
else if (strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
tree fn, arg, len;
|
tree fn, arg, len;
|
fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
|
|
if (! fn)
|
if (! fn)
|
return 0;
|
return 0;
|
|
|
if (! arglist || TREE_CHAIN (arglist))
|
if (! arglist || TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (arg)))
|
if (! POINTER_TYPE_P (TREE_TYPE (arg)))
|
return 0;
|
return 0;
|
|
|
if (target != const0_rtx)
|
if (target != const0_rtx)
|
{
|
{
|
len = c_strlen (arg, 1);
|
len = c_strlen (arg, 1);
|
if (! len || TREE_CODE (len) != INTEGER_CST)
|
if (! len || TREE_CODE (len) != INTEGER_CST)
|
return 0;
|
return 0;
|
}
|
}
|
else
|
else
|
len = NULL_TREE;
|
len = NULL_TREE;
|
|
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
expand_expr (build_function_call_expr (fn, arglist),
|
expand_expr (build_function_call_expr (fn, arglist),
|
const0_rtx, VOIDmode, EXPAND_NORMAL);
|
const0_rtx, VOIDmode, EXPAND_NORMAL);
|
|
|
if (target == const0_rtx)
|
if (target == const0_rtx)
|
return const0_rtx;
|
return const0_rtx;
|
return expand_expr (len, target, mode, EXPAND_NORMAL);
|
return expand_expr (len, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Expand a call to either the entry or exit function profiler. */
|
/* Expand a call to either the entry or exit function profiler. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_profile_func (bool exitp)
|
expand_builtin_profile_func (bool exitp)
|
{
|
{
|
rtx this, which;
|
rtx this, which;
|
|
|
this = DECL_RTL (current_function_decl);
|
this = DECL_RTL (current_function_decl);
|
gcc_assert (MEM_P (this));
|
gcc_assert (MEM_P (this));
|
this = XEXP (this, 0);
|
this = XEXP (this, 0);
|
|
|
if (exitp)
|
if (exitp)
|
which = profile_function_exit_libfunc;
|
which = profile_function_exit_libfunc;
|
else
|
else
|
which = profile_function_entry_libfunc;
|
which = profile_function_entry_libfunc;
|
|
|
emit_library_call (which, LCT_NORMAL, VOIDmode, 2, this, Pmode,
|
emit_library_call (which, LCT_NORMAL, VOIDmode, 2, this, Pmode,
|
expand_builtin_return_addr (BUILT_IN_RETURN_ADDRESS,
|
expand_builtin_return_addr (BUILT_IN_RETURN_ADDRESS,
|
0),
|
0),
|
Pmode);
|
Pmode);
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
/* Given a trampoline address, make sure it satisfies TRAMPOLINE_ALIGNMENT. */
|
/* Given a trampoline address, make sure it satisfies TRAMPOLINE_ALIGNMENT. */
|
|
|
static rtx
|
static rtx
|
round_trampoline_addr (rtx tramp)
|
round_trampoline_addr (rtx tramp)
|
{
|
{
|
rtx temp, addend, mask;
|
rtx temp, addend, mask;
|
|
|
/* If we don't need too much alignment, we'll have been guaranteed
|
/* If we don't need too much alignment, we'll have been guaranteed
|
proper alignment by get_trampoline_type. */
|
proper alignment by get_trampoline_type. */
|
if (TRAMPOLINE_ALIGNMENT <= STACK_BOUNDARY)
|
if (TRAMPOLINE_ALIGNMENT <= STACK_BOUNDARY)
|
return tramp;
|
return tramp;
|
|
|
/* Round address up to desired boundary. */
|
/* Round address up to desired boundary. */
|
temp = gen_reg_rtx (Pmode);
|
temp = gen_reg_rtx (Pmode);
|
addend = GEN_INT (TRAMPOLINE_ALIGNMENT / BITS_PER_UNIT - 1);
|
addend = GEN_INT (TRAMPOLINE_ALIGNMENT / BITS_PER_UNIT - 1);
|
mask = GEN_INT (-TRAMPOLINE_ALIGNMENT / BITS_PER_UNIT);
|
mask = GEN_INT (-TRAMPOLINE_ALIGNMENT / BITS_PER_UNIT);
|
|
|
temp = expand_simple_binop (Pmode, PLUS, tramp, addend,
|
temp = expand_simple_binop (Pmode, PLUS, tramp, addend,
|
temp, 0, OPTAB_LIB_WIDEN);
|
temp, 0, OPTAB_LIB_WIDEN);
|
tramp = expand_simple_binop (Pmode, AND, temp, mask,
|
tramp = expand_simple_binop (Pmode, AND, temp, mask,
|
temp, 0, OPTAB_LIB_WIDEN);
|
temp, 0, OPTAB_LIB_WIDEN);
|
|
|
return tramp;
|
return tramp;
|
}
|
}
|
|
|
static rtx
|
static rtx
|
expand_builtin_init_trampoline (tree arglist)
|
expand_builtin_init_trampoline (tree arglist)
|
{
|
{
|
tree t_tramp, t_func, t_chain;
|
tree t_tramp, t_func, t_chain;
|
rtx r_tramp, r_func, r_chain;
|
rtx r_tramp, r_func, r_chain;
|
#ifdef TRAMPOLINE_TEMPLATE
|
#ifdef TRAMPOLINE_TEMPLATE
|
rtx blktramp;
|
rtx blktramp;
|
#endif
|
#endif
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE,
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE,
|
POINTER_TYPE, VOID_TYPE))
|
POINTER_TYPE, VOID_TYPE))
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
t_tramp = TREE_VALUE (arglist);
|
t_tramp = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
t_func = TREE_VALUE (arglist);
|
t_func = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
t_chain = TREE_VALUE (arglist);
|
t_chain = TREE_VALUE (arglist);
|
|
|
r_tramp = expand_normal (t_tramp);
|
r_tramp = expand_normal (t_tramp);
|
r_func = expand_normal (t_func);
|
r_func = expand_normal (t_func);
|
r_chain = expand_normal (t_chain);
|
r_chain = expand_normal (t_chain);
|
|
|
/* Generate insns to initialize the trampoline. */
|
/* Generate insns to initialize the trampoline. */
|
r_tramp = round_trampoline_addr (r_tramp);
|
r_tramp = round_trampoline_addr (r_tramp);
|
#ifdef TRAMPOLINE_TEMPLATE
|
#ifdef TRAMPOLINE_TEMPLATE
|
blktramp = gen_rtx_MEM (BLKmode, r_tramp);
|
blktramp = gen_rtx_MEM (BLKmode, r_tramp);
|
set_mem_align (blktramp, TRAMPOLINE_ALIGNMENT);
|
set_mem_align (blktramp, TRAMPOLINE_ALIGNMENT);
|
emit_block_move (blktramp, assemble_trampoline_template (),
|
emit_block_move (blktramp, assemble_trampoline_template (),
|
GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL);
|
GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL);
|
#endif
|
#endif
|
trampolines_created = 1;
|
trampolines_created = 1;
|
INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
|
INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
|
|
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
static rtx
|
static rtx
|
expand_builtin_adjust_trampoline (tree arglist)
|
expand_builtin_adjust_trampoline (tree arglist)
|
{
|
{
|
rtx tramp;
|
rtx tramp;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
tramp = expand_normal (TREE_VALUE (arglist));
|
tramp = expand_normal (TREE_VALUE (arglist));
|
tramp = round_trampoline_addr (tramp);
|
tramp = round_trampoline_addr (tramp);
|
#ifdef TRAMPOLINE_ADJUST_ADDRESS
|
#ifdef TRAMPOLINE_ADJUST_ADDRESS
|
TRAMPOLINE_ADJUST_ADDRESS (tramp);
|
TRAMPOLINE_ADJUST_ADDRESS (tramp);
|
#endif
|
#endif
|
|
|
return tramp;
|
return tramp;
|
}
|
}
|
|
|
/* Expand a call to the built-in signbit, signbitf or signbitl function.
|
/* Expand a call to the built-in signbit, signbitf or signbitl function.
|
Return NULL_RTX if a normal call should be emitted rather than expanding
|
Return NULL_RTX if a normal call should be emitted rather than expanding
|
the function in-line. EXP is the expression that is a call to the builtin
|
the function in-line. EXP is the expression that is a call to the builtin
|
function; if convenient, the result should be placed in TARGET. */
|
function; if convenient, the result should be placed in TARGET. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_signbit (tree exp, rtx target)
|
expand_builtin_signbit (tree exp, rtx target)
|
{
|
{
|
const struct real_format *fmt;
|
const struct real_format *fmt;
|
enum machine_mode fmode, imode, rmode;
|
enum machine_mode fmode, imode, rmode;
|
HOST_WIDE_INT hi, lo;
|
HOST_WIDE_INT hi, lo;
|
tree arg, arglist;
|
tree arg, arglist;
|
int word, bitpos;
|
int word, bitpos;
|
rtx temp;
|
rtx temp;
|
|
|
arglist = TREE_OPERAND (exp, 1);
|
arglist = TREE_OPERAND (exp, 1);
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
fmode = TYPE_MODE (TREE_TYPE (arg));
|
fmode = TYPE_MODE (TREE_TYPE (arg));
|
rmode = TYPE_MODE (TREE_TYPE (exp));
|
rmode = TYPE_MODE (TREE_TYPE (exp));
|
fmt = REAL_MODE_FORMAT (fmode);
|
fmt = REAL_MODE_FORMAT (fmode);
|
|
|
/* For floating point formats without a sign bit, implement signbit
|
/* For floating point formats without a sign bit, implement signbit
|
as "ARG < 0.0". */
|
as "ARG < 0.0". */
|
bitpos = fmt->signbit_ro;
|
bitpos = fmt->signbit_ro;
|
if (bitpos < 0)
|
if (bitpos < 0)
|
{
|
{
|
/* But we can't do this if the format supports signed zero. */
|
/* But we can't do this if the format supports signed zero. */
|
if (fmt->has_signed_zero && HONOR_SIGNED_ZEROS (fmode))
|
if (fmt->has_signed_zero && HONOR_SIGNED_ZEROS (fmode))
|
return 0;
|
return 0;
|
|
|
arg = fold_build2 (LT_EXPR, TREE_TYPE (exp), arg,
|
arg = fold_build2 (LT_EXPR, TREE_TYPE (exp), arg,
|
build_real (TREE_TYPE (arg), dconst0));
|
build_real (TREE_TYPE (arg), dconst0));
|
return expand_expr (arg, target, VOIDmode, EXPAND_NORMAL);
|
return expand_expr (arg, target, VOIDmode, EXPAND_NORMAL);
|
}
|
}
|
|
|
temp = expand_normal (arg);
|
temp = expand_normal (arg);
|
if (GET_MODE_SIZE (fmode) <= UNITS_PER_WORD)
|
if (GET_MODE_SIZE (fmode) <= UNITS_PER_WORD)
|
{
|
{
|
imode = int_mode_for_mode (fmode);
|
imode = int_mode_for_mode (fmode);
|
if (imode == BLKmode)
|
if (imode == BLKmode)
|
return 0;
|
return 0;
|
temp = gen_lowpart (imode, temp);
|
temp = gen_lowpart (imode, temp);
|
}
|
}
|
else
|
else
|
{
|
{
|
imode = word_mode;
|
imode = word_mode;
|
/* Handle targets with different FP word orders. */
|
/* Handle targets with different FP word orders. */
|
if (FLOAT_WORDS_BIG_ENDIAN)
|
if (FLOAT_WORDS_BIG_ENDIAN)
|
word = (GET_MODE_BITSIZE (fmode) - bitpos) / BITS_PER_WORD;
|
word = (GET_MODE_BITSIZE (fmode) - bitpos) / BITS_PER_WORD;
|
else
|
else
|
word = bitpos / BITS_PER_WORD;
|
word = bitpos / BITS_PER_WORD;
|
temp = operand_subword_force (temp, word, fmode);
|
temp = operand_subword_force (temp, word, fmode);
|
bitpos = bitpos % BITS_PER_WORD;
|
bitpos = bitpos % BITS_PER_WORD;
|
}
|
}
|
|
|
/* Force the intermediate word_mode (or narrower) result into a
|
/* Force the intermediate word_mode (or narrower) result into a
|
register. This avoids attempting to create paradoxical SUBREGs
|
register. This avoids attempting to create paradoxical SUBREGs
|
of floating point modes below. */
|
of floating point modes below. */
|
temp = force_reg (imode, temp);
|
temp = force_reg (imode, temp);
|
|
|
/* If the bitpos is within the "result mode" lowpart, the operation
|
/* If the bitpos is within the "result mode" lowpart, the operation
|
can be implement with a single bitwise AND. Otherwise, we need
|
can be implement with a single bitwise AND. Otherwise, we need
|
a right shift and an AND. */
|
a right shift and an AND. */
|
|
|
if (bitpos < GET_MODE_BITSIZE (rmode))
|
if (bitpos < GET_MODE_BITSIZE (rmode))
|
{
|
{
|
if (bitpos < HOST_BITS_PER_WIDE_INT)
|
if (bitpos < HOST_BITS_PER_WIDE_INT)
|
{
|
{
|
hi = 0;
|
hi = 0;
|
lo = (HOST_WIDE_INT) 1 << bitpos;
|
lo = (HOST_WIDE_INT) 1 << bitpos;
|
}
|
}
|
else
|
else
|
{
|
{
|
hi = (HOST_WIDE_INT) 1 << (bitpos - HOST_BITS_PER_WIDE_INT);
|
hi = (HOST_WIDE_INT) 1 << (bitpos - HOST_BITS_PER_WIDE_INT);
|
lo = 0;
|
lo = 0;
|
}
|
}
|
|
|
if (imode != rmode)
|
if (imode != rmode)
|
temp = gen_lowpart (rmode, temp);
|
temp = gen_lowpart (rmode, temp);
|
temp = expand_binop (rmode, and_optab, temp,
|
temp = expand_binop (rmode, and_optab, temp,
|
immed_double_const (lo, hi, rmode),
|
immed_double_const (lo, hi, rmode),
|
NULL_RTX, 1, OPTAB_LIB_WIDEN);
|
NULL_RTX, 1, OPTAB_LIB_WIDEN);
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Perform a logical right shift to place the signbit in the least
|
/* Perform a logical right shift to place the signbit in the least
|
significant bit, then truncate the result to the desired mode
|
significant bit, then truncate the result to the desired mode
|
and mask just this bit. */
|
and mask just this bit. */
|
temp = expand_shift (RSHIFT_EXPR, imode, temp,
|
temp = expand_shift (RSHIFT_EXPR, imode, temp,
|
build_int_cst (NULL_TREE, bitpos), NULL_RTX, 1);
|
build_int_cst (NULL_TREE, bitpos), NULL_RTX, 1);
|
temp = gen_lowpart (rmode, temp);
|
temp = gen_lowpart (rmode, temp);
|
temp = expand_binop (rmode, and_optab, temp, const1_rtx,
|
temp = expand_binop (rmode, and_optab, temp, const1_rtx,
|
NULL_RTX, 1, OPTAB_LIB_WIDEN);
|
NULL_RTX, 1, OPTAB_LIB_WIDEN);
|
}
|
}
|
|
|
return temp;
|
return temp;
|
}
|
}
|
|
|
/* Expand fork or exec calls. TARGET is the desired target of the
|
/* Expand fork or exec calls. TARGET is the desired target of the
|
call. ARGLIST is the list of arguments of the call. FN is the
|
call. ARGLIST is the list of arguments of the call. FN is the
|
identificator of the actual function. IGNORE is nonzero if the
|
identificator of the actual function. IGNORE is nonzero if the
|
value is to be ignored. */
|
value is to be ignored. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_fork_or_exec (tree fn, tree arglist, rtx target, int ignore)
|
expand_builtin_fork_or_exec (tree fn, tree arglist, rtx target, int ignore)
|
{
|
{
|
tree id, decl;
|
tree id, decl;
|
tree call;
|
tree call;
|
|
|
/* If we are not profiling, just call the function. */
|
/* If we are not profiling, just call the function. */
|
if (!profile_arc_flag)
|
if (!profile_arc_flag)
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
/* Otherwise call the wrapper. This should be equivalent for the rest of
|
/* Otherwise call the wrapper. This should be equivalent for the rest of
|
compiler, so the code does not diverge, and the wrapper may run the
|
compiler, so the code does not diverge, and the wrapper may run the
|
code necessary for keeping the profiling sane. */
|
code necessary for keeping the profiling sane. */
|
|
|
switch (DECL_FUNCTION_CODE (fn))
|
switch (DECL_FUNCTION_CODE (fn))
|
{
|
{
|
case BUILT_IN_FORK:
|
case BUILT_IN_FORK:
|
id = get_identifier ("__gcov_fork");
|
id = get_identifier ("__gcov_fork");
|
break;
|
break;
|
|
|
case BUILT_IN_EXECL:
|
case BUILT_IN_EXECL:
|
id = get_identifier ("__gcov_execl");
|
id = get_identifier ("__gcov_execl");
|
break;
|
break;
|
|
|
case BUILT_IN_EXECV:
|
case BUILT_IN_EXECV:
|
id = get_identifier ("__gcov_execv");
|
id = get_identifier ("__gcov_execv");
|
break;
|
break;
|
|
|
case BUILT_IN_EXECLP:
|
case BUILT_IN_EXECLP:
|
id = get_identifier ("__gcov_execlp");
|
id = get_identifier ("__gcov_execlp");
|
break;
|
break;
|
|
|
case BUILT_IN_EXECLE:
|
case BUILT_IN_EXECLE:
|
id = get_identifier ("__gcov_execle");
|
id = get_identifier ("__gcov_execle");
|
break;
|
break;
|
|
|
case BUILT_IN_EXECVP:
|
case BUILT_IN_EXECVP:
|
id = get_identifier ("__gcov_execvp");
|
id = get_identifier ("__gcov_execvp");
|
break;
|
break;
|
|
|
case BUILT_IN_EXECVE:
|
case BUILT_IN_EXECVE:
|
id = get_identifier ("__gcov_execve");
|
id = get_identifier ("__gcov_execve");
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
decl = build_decl (FUNCTION_DECL, id, TREE_TYPE (fn));
|
decl = build_decl (FUNCTION_DECL, id, TREE_TYPE (fn));
|
DECL_EXTERNAL (decl) = 1;
|
DECL_EXTERNAL (decl) = 1;
|
TREE_PUBLIC (decl) = 1;
|
TREE_PUBLIC (decl) = 1;
|
DECL_ARTIFICIAL (decl) = 1;
|
DECL_ARTIFICIAL (decl) = 1;
|
TREE_NOTHROW (decl) = 1;
|
TREE_NOTHROW (decl) = 1;
|
DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
|
DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
|
DECL_VISIBILITY_SPECIFIED (decl) = 1;
|
DECL_VISIBILITY_SPECIFIED (decl) = 1;
|
call = build_function_call_expr (decl, arglist);
|
call = build_function_call_expr (decl, arglist);
|
|
|
return expand_call (call, target, ignore);
|
return expand_call (call, target, ignore);
|
}
|
}
|
|
|
|
|
/* Reconstitute a mode for a __sync intrinsic operation. Since the type of
|
/* Reconstitute a mode for a __sync intrinsic operation. Since the type of
|
the pointer in these functions is void*, the tree optimizers may remove
|
the pointer in these functions is void*, the tree optimizers may remove
|
casts. The mode computed in expand_builtin isn't reliable either, due
|
casts. The mode computed in expand_builtin isn't reliable either, due
|
to __sync_bool_compare_and_swap.
|
to __sync_bool_compare_and_swap.
|
|
|
FCODE_DIFF should be fcode - base, where base is the FOO_1 code for the
|
FCODE_DIFF should be fcode - base, where base is the FOO_1 code for the
|
group of builtins. This gives us log2 of the mode size. */
|
group of builtins. This gives us log2 of the mode size. */
|
|
|
static inline enum machine_mode
|
static inline enum machine_mode
|
get_builtin_sync_mode (int fcode_diff)
|
get_builtin_sync_mode (int fcode_diff)
|
{
|
{
|
/* The size is not negotiable, so ask not to get BLKmode in return
|
/* The size is not negotiable, so ask not to get BLKmode in return
|
if the target indicates that a smaller size would be better. */
|
if the target indicates that a smaller size would be better. */
|
return mode_for_size (BITS_PER_UNIT << fcode_diff, MODE_INT, 0);
|
return mode_for_size (BITS_PER_UNIT << fcode_diff, MODE_INT, 0);
|
}
|
}
|
|
|
/* Expand the memory expression LOC and return the appropriate memory operand
|
/* Expand the memory expression LOC and return the appropriate memory operand
|
for the builtin_sync operations. */
|
for the builtin_sync operations. */
|
|
|
static rtx
|
static rtx
|
get_builtin_sync_mem (tree loc, enum machine_mode mode)
|
get_builtin_sync_mem (tree loc, enum machine_mode mode)
|
{
|
{
|
rtx addr, mem;
|
rtx addr, mem;
|
|
|
addr = expand_expr (loc, NULL, Pmode, EXPAND_SUM);
|
addr = expand_expr (loc, NULL, Pmode, EXPAND_SUM);
|
|
|
/* Note that we explicitly do not want any alias information for this
|
/* Note that we explicitly do not want any alias information for this
|
memory, so that we kill all other live memories. Otherwise we don't
|
memory, so that we kill all other live memories. Otherwise we don't
|
satisfy the full barrier semantics of the intrinsic. */
|
satisfy the full barrier semantics of the intrinsic. */
|
mem = validize_mem (gen_rtx_MEM (mode, addr));
|
mem = validize_mem (gen_rtx_MEM (mode, addr));
|
|
|
set_mem_align (mem, get_pointer_alignment (loc, BIGGEST_ALIGNMENT));
|
set_mem_align (mem, get_pointer_alignment (loc, BIGGEST_ALIGNMENT));
|
set_mem_alias_set (mem, ALIAS_SET_MEMORY_BARRIER);
|
set_mem_alias_set (mem, ALIAS_SET_MEMORY_BARRIER);
|
MEM_VOLATILE_P (mem) = 1;
|
MEM_VOLATILE_P (mem) = 1;
|
|
|
return mem;
|
return mem;
|
}
|
}
|
|
|
/* Expand the __sync_xxx_and_fetch and __sync_fetch_and_xxx intrinsics.
|
/* Expand the __sync_xxx_and_fetch and __sync_fetch_and_xxx intrinsics.
|
ARGLIST is the operands list to the function. CODE is the rtx code
|
ARGLIST is the operands list to the function. CODE is the rtx code
|
that corresponds to the arithmetic or logical operation from the name;
|
that corresponds to the arithmetic or logical operation from the name;
|
an exception here is that NOT actually means NAND. TARGET is an optional
|
an exception here is that NOT actually means NAND. TARGET is an optional
|
place for us to store the results; AFTER is true if this is the
|
place for us to store the results; AFTER is true if this is the
|
fetch_and_xxx form. IGNORE is true if we don't actually care about
|
fetch_and_xxx form. IGNORE is true if we don't actually care about
|
the result of the operation at all. */
|
the result of the operation at all. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_sync_operation (enum machine_mode mode, tree arglist,
|
expand_builtin_sync_operation (enum machine_mode mode, tree arglist,
|
enum rtx_code code, bool after,
|
enum rtx_code code, bool after,
|
rtx target, bool ignore)
|
rtx target, bool ignore)
|
{
|
{
|
rtx val, mem;
|
rtx val, mem;
|
enum machine_mode old_mode;
|
enum machine_mode old_mode;
|
|
|
/* Expand the operands. */
|
/* Expand the operands. */
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
|
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
old_mode = GET_MODE (val);
|
old_mode = GET_MODE (val);
|
if (old_mode == VOIDmode)
|
if (old_mode == VOIDmode)
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
val = convert_modes (mode, old_mode, val, 1);
|
val = convert_modes (mode, old_mode, val, 1);
|
|
|
if (ignore)
|
if (ignore)
|
return expand_sync_operation (mem, val, code);
|
return expand_sync_operation (mem, val, code);
|
else
|
else
|
return expand_sync_fetch_operation (mem, val, code, after, target);
|
return expand_sync_fetch_operation (mem, val, code, after, target);
|
}
|
}
|
|
|
/* Expand the __sync_val_compare_and_swap and __sync_bool_compare_and_swap
|
/* Expand the __sync_val_compare_and_swap and __sync_bool_compare_and_swap
|
intrinsics. ARGLIST is the operands list to the function. IS_BOOL is
|
intrinsics. ARGLIST is the operands list to the function. IS_BOOL is
|
true if this is the boolean form. TARGET is a place for us to store the
|
true if this is the boolean form. TARGET is a place for us to store the
|
results; this is NOT optional if IS_BOOL is true. */
|
results; this is NOT optional if IS_BOOL is true. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_compare_and_swap (enum machine_mode mode, tree arglist,
|
expand_builtin_compare_and_swap (enum machine_mode mode, tree arglist,
|
bool is_bool, rtx target)
|
bool is_bool, rtx target)
|
{
|
{
|
rtx old_val, new_val, mem;
|
rtx old_val, new_val, mem;
|
enum machine_mode old_mode;
|
enum machine_mode old_mode;
|
|
|
/* Expand the operands. */
|
/* Expand the operands. */
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
|
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
old_val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
old_val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
old_mode = GET_MODE (old_val);
|
old_mode = GET_MODE (old_val);
|
if (old_mode == VOIDmode)
|
if (old_mode == VOIDmode)
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
old_val = convert_modes (mode, old_mode, old_val, 1);
|
old_val = convert_modes (mode, old_mode, old_val, 1);
|
|
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
new_val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
new_val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
old_mode = GET_MODE (new_val);
|
old_mode = GET_MODE (new_val);
|
if (old_mode == VOIDmode)
|
if (old_mode == VOIDmode)
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
new_val = convert_modes (mode, old_mode, new_val, 1);
|
new_val = convert_modes (mode, old_mode, new_val, 1);
|
|
|
if (is_bool)
|
if (is_bool)
|
return expand_bool_compare_and_swap (mem, old_val, new_val, target);
|
return expand_bool_compare_and_swap (mem, old_val, new_val, target);
|
else
|
else
|
return expand_val_compare_and_swap (mem, old_val, new_val, target);
|
return expand_val_compare_and_swap (mem, old_val, new_val, target);
|
}
|
}
|
|
|
/* Expand the __sync_lock_test_and_set intrinsic. Note that the most
|
/* Expand the __sync_lock_test_and_set intrinsic. Note that the most
|
general form is actually an atomic exchange, and some targets only
|
general form is actually an atomic exchange, and some targets only
|
support a reduced form with the second argument being a constant 1.
|
support a reduced form with the second argument being a constant 1.
|
ARGLIST is the operands list to the function; TARGET is an optional
|
ARGLIST is the operands list to the function; TARGET is an optional
|
place for us to store the results. */
|
place for us to store the results. */
|
|
|
static rtx
|
static rtx
|
expand_builtin_lock_test_and_set (enum machine_mode mode, tree arglist,
|
expand_builtin_lock_test_and_set (enum machine_mode mode, tree arglist,
|
rtx target)
|
rtx target)
|
{
|
{
|
rtx val, mem;
|
rtx val, mem;
|
enum machine_mode old_mode;
|
enum machine_mode old_mode;
|
|
|
/* Expand the operands. */
|
/* Expand the operands. */
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
|
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL);
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
/* If VAL is promoted to a wider mode, convert it back to MODE. Take care
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
of CONST_INTs, where we know the old_mode only from the call argument. */
|
old_mode = GET_MODE (val);
|
old_mode = GET_MODE (val);
|
if (old_mode == VOIDmode)
|
if (old_mode == VOIDmode)
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
old_mode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist)));
|
val = convert_modes (mode, old_mode, val, 1);
|
val = convert_modes (mode, old_mode, val, 1);
|
|
|
return expand_sync_lock_test_and_set (mem, val, target);
|
return expand_sync_lock_test_and_set (mem, val, target);
|
}
|
}
|
|
|
/* Expand the __sync_synchronize intrinsic. */
|
/* Expand the __sync_synchronize intrinsic. */
|
|
|
static void
|
static void
|
expand_builtin_synchronize (void)
|
expand_builtin_synchronize (void)
|
{
|
{
|
tree x;
|
tree x;
|
|
|
#ifdef HAVE_memory_barrier
|
#ifdef HAVE_memory_barrier
|
if (HAVE_memory_barrier)
|
if (HAVE_memory_barrier)
|
{
|
{
|
emit_insn (gen_memory_barrier ());
|
emit_insn (gen_memory_barrier ());
|
return;
|
return;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* If no explicit memory barrier instruction is available, create an
|
/* If no explicit memory barrier instruction is available, create an
|
empty asm stmt with a memory clobber. */
|
empty asm stmt with a memory clobber. */
|
x = build4 (ASM_EXPR, void_type_node, build_string (0, ""), NULL, NULL,
|
x = build4 (ASM_EXPR, void_type_node, build_string (0, ""), NULL, NULL,
|
tree_cons (NULL, build_string (6, "memory"), NULL));
|
tree_cons (NULL, build_string (6, "memory"), NULL));
|
ASM_VOLATILE_P (x) = 1;
|
ASM_VOLATILE_P (x) = 1;
|
expand_asm_expr (x);
|
expand_asm_expr (x);
|
}
|
}
|
|
|
/* Expand the __sync_lock_release intrinsic. ARGLIST is the operands list
|
/* Expand the __sync_lock_release intrinsic. ARGLIST is the operands list
|
to the function. */
|
to the function. */
|
|
|
static void
|
static void
|
expand_builtin_lock_release (enum machine_mode mode, tree arglist)
|
expand_builtin_lock_release (enum machine_mode mode, tree arglist)
|
{
|
{
|
enum insn_code icode;
|
enum insn_code icode;
|
rtx mem, insn;
|
rtx mem, insn;
|
rtx val = const0_rtx;
|
rtx val = const0_rtx;
|
|
|
/* Expand the operands. */
|
/* Expand the operands. */
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
mem = get_builtin_sync_mem (TREE_VALUE (arglist), mode);
|
|
|
/* If there is an explicit operation in the md file, use it. */
|
/* If there is an explicit operation in the md file, use it. */
|
icode = sync_lock_release[mode];
|
icode = sync_lock_release[mode];
|
if (icode != CODE_FOR_nothing)
|
if (icode != CODE_FOR_nothing)
|
{
|
{
|
if (!insn_data[icode].operand[1].predicate (val, mode))
|
if (!insn_data[icode].operand[1].predicate (val, mode))
|
val = force_reg (mode, val);
|
val = force_reg (mode, val);
|
|
|
insn = GEN_FCN (icode) (mem, val);
|
insn = GEN_FCN (icode) (mem, val);
|
if (insn)
|
if (insn)
|
{
|
{
|
emit_insn (insn);
|
emit_insn (insn);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
/* Otherwise we can implement this operation by emitting a barrier
|
/* Otherwise we can implement this operation by emitting a barrier
|
followed by a store of zero. */
|
followed by a store of zero. */
|
expand_builtin_synchronize ();
|
expand_builtin_synchronize ();
|
emit_move_insn (mem, val);
|
emit_move_insn (mem, val);
|
}
|
}
|
|
|
/* Expand an expression EXP that calls a built-in function,
|
/* Expand an expression EXP that calls a built-in function,
|
with result going to TARGET if that's convenient
|
with result going to TARGET if that's convenient
|
(and in mode MODE if that's convenient).
|
(and in mode MODE if that's convenient).
|
SUBTARGET may be used as the target for computing one of EXP's operands.
|
SUBTARGET may be used as the target for computing one of EXP's operands.
|
IGNORE is nonzero if the value is to be ignored. */
|
IGNORE is nonzero if the value is to be ignored. */
|
|
|
rtx
|
rtx
|
expand_builtin (tree exp, rtx target, rtx subtarget, enum machine_mode mode,
|
expand_builtin (tree exp, rtx target, rtx subtarget, enum machine_mode mode,
|
int ignore)
|
int ignore)
|
{
|
{
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
|
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
|
enum machine_mode target_mode = TYPE_MODE (TREE_TYPE (exp));
|
enum machine_mode target_mode = TYPE_MODE (TREE_TYPE (exp));
|
|
|
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
|
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
|
return targetm.expand_builtin (exp, target, subtarget, mode, ignore);
|
return targetm.expand_builtin (exp, target, subtarget, mode, ignore);
|
|
|
/* When not optimizing, generate calls to library functions for a certain
|
/* When not optimizing, generate calls to library functions for a certain
|
set of builtins. */
|
set of builtins. */
|
if (!optimize
|
if (!optimize
|
&& !called_as_built_in (fndecl)
|
&& !called_as_built_in (fndecl)
|
&& DECL_ASSEMBLER_NAME_SET_P (fndecl)
|
&& DECL_ASSEMBLER_NAME_SET_P (fndecl)
|
&& fcode != BUILT_IN_ALLOCA)
|
&& fcode != BUILT_IN_ALLOCA)
|
return expand_call (exp, target, ignore);
|
return expand_call (exp, target, ignore);
|
|
|
/* The built-in function expanders test for target == const0_rtx
|
/* The built-in function expanders test for target == const0_rtx
|
to determine whether the function's result will be ignored. */
|
to determine whether the function's result will be ignored. */
|
if (ignore)
|
if (ignore)
|
target = const0_rtx;
|
target = const0_rtx;
|
|
|
/* If the result of a pure or const built-in function is ignored, and
|
/* If the result of a pure or const built-in function is ignored, and
|
none of its arguments are volatile, we can avoid expanding the
|
none of its arguments are volatile, we can avoid expanding the
|
built-in call and just evaluate the arguments for side-effects. */
|
built-in call and just evaluate the arguments for side-effects. */
|
if (target == const0_rtx
|
if (target == const0_rtx
|
&& (DECL_IS_PURE (fndecl) || TREE_READONLY (fndecl)))
|
&& (DECL_IS_PURE (fndecl) || TREE_READONLY (fndecl)))
|
{
|
{
|
bool volatilep = false;
|
bool volatilep = false;
|
tree arg;
|
tree arg;
|
|
|
for (arg = arglist; arg; arg = TREE_CHAIN (arg))
|
for (arg = arglist; arg; arg = TREE_CHAIN (arg))
|
if (TREE_THIS_VOLATILE (TREE_VALUE (arg)))
|
if (TREE_THIS_VOLATILE (TREE_VALUE (arg)))
|
{
|
{
|
volatilep = true;
|
volatilep = true;
|
break;
|
break;
|
}
|
}
|
|
|
if (! volatilep)
|
if (! volatilep)
|
{
|
{
|
for (arg = arglist; arg; arg = TREE_CHAIN (arg))
|
for (arg = arglist; arg; arg = TREE_CHAIN (arg))
|
expand_expr (TREE_VALUE (arg), const0_rtx,
|
expand_expr (TREE_VALUE (arg), const0_rtx,
|
VOIDmode, EXPAND_NORMAL);
|
VOIDmode, EXPAND_NORMAL);
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
}
|
}
|
|
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_FABS):
|
CASE_FLT_FN (BUILT_IN_FABS):
|
target = expand_builtin_fabs (arglist, target, subtarget);
|
target = expand_builtin_fabs (arglist, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_COPYSIGN):
|
CASE_FLT_FN (BUILT_IN_COPYSIGN):
|
target = expand_builtin_copysign (arglist, target, subtarget);
|
target = expand_builtin_copysign (arglist, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
/* Just do a normal library call if we were unable to fold
|
/* Just do a normal library call if we were unable to fold
|
the values. */
|
the values. */
|
CASE_FLT_FN (BUILT_IN_CABS):
|
CASE_FLT_FN (BUILT_IN_CABS):
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_EXP):
|
CASE_FLT_FN (BUILT_IN_EXP):
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
CASE_FLT_FN (BUILT_IN_EXPM1):
|
CASE_FLT_FN (BUILT_IN_EXPM1):
|
CASE_FLT_FN (BUILT_IN_LOGB):
|
CASE_FLT_FN (BUILT_IN_LOGB):
|
CASE_FLT_FN (BUILT_IN_ILOGB):
|
CASE_FLT_FN (BUILT_IN_ILOGB):
|
CASE_FLT_FN (BUILT_IN_LOG):
|
CASE_FLT_FN (BUILT_IN_LOG):
|
CASE_FLT_FN (BUILT_IN_LOG10):
|
CASE_FLT_FN (BUILT_IN_LOG10):
|
CASE_FLT_FN (BUILT_IN_LOG2):
|
CASE_FLT_FN (BUILT_IN_LOG2):
|
CASE_FLT_FN (BUILT_IN_LOG1P):
|
CASE_FLT_FN (BUILT_IN_LOG1P):
|
CASE_FLT_FN (BUILT_IN_TAN):
|
CASE_FLT_FN (BUILT_IN_TAN):
|
CASE_FLT_FN (BUILT_IN_ASIN):
|
CASE_FLT_FN (BUILT_IN_ASIN):
|
CASE_FLT_FN (BUILT_IN_ACOS):
|
CASE_FLT_FN (BUILT_IN_ACOS):
|
CASE_FLT_FN (BUILT_IN_ATAN):
|
CASE_FLT_FN (BUILT_IN_ATAN):
|
/* Treat these like sqrt only if unsafe math optimizations are allowed,
|
/* Treat these like sqrt only if unsafe math optimizations are allowed,
|
because of possible accuracy problems. */
|
because of possible accuracy problems. */
|
if (! flag_unsafe_math_optimizations)
|
if (! flag_unsafe_math_optimizations)
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
CASE_FLT_FN (BUILT_IN_LRINT):
|
CASE_FLT_FN (BUILT_IN_LRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
target = expand_builtin_mathfn (exp, target, subtarget);
|
target = expand_builtin_mathfn (exp, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
target = expand_builtin_int_roundingfn (exp, target, subtarget);
|
target = expand_builtin_int_roundingfn (exp, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_POW):
|
CASE_FLT_FN (BUILT_IN_POW):
|
target = expand_builtin_pow (exp, target, subtarget);
|
target = expand_builtin_pow (exp, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_POWI):
|
CASE_FLT_FN (BUILT_IN_POWI):
|
target = expand_builtin_powi (exp, target, subtarget);
|
target = expand_builtin_powi (exp, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_ATAN2):
|
CASE_FLT_FN (BUILT_IN_ATAN2):
|
CASE_FLT_FN (BUILT_IN_LDEXP):
|
CASE_FLT_FN (BUILT_IN_LDEXP):
|
CASE_FLT_FN (BUILT_IN_FMOD):
|
CASE_FLT_FN (BUILT_IN_FMOD):
|
CASE_FLT_FN (BUILT_IN_DREM):
|
CASE_FLT_FN (BUILT_IN_DREM):
|
if (! flag_unsafe_math_optimizations)
|
if (! flag_unsafe_math_optimizations)
|
break;
|
break;
|
target = expand_builtin_mathfn_2 (exp, target, subtarget);
|
target = expand_builtin_mathfn_2 (exp, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_COS):
|
CASE_FLT_FN (BUILT_IN_COS):
|
if (! flag_unsafe_math_optimizations)
|
if (! flag_unsafe_math_optimizations)
|
break;
|
break;
|
target = expand_builtin_mathfn_3 (exp, target, subtarget);
|
target = expand_builtin_mathfn_3 (exp, target, subtarget);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_SINCOS):
|
CASE_FLT_FN (BUILT_IN_SINCOS):
|
if (! flag_unsafe_math_optimizations)
|
if (! flag_unsafe_math_optimizations)
|
break;
|
break;
|
target = expand_builtin_sincos (exp);
|
target = expand_builtin_sincos (exp);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_APPLY_ARGS:
|
case BUILT_IN_APPLY_ARGS:
|
return expand_builtin_apply_args ();
|
return expand_builtin_apply_args ();
|
|
|
/* __builtin_apply (FUNCTION, ARGUMENTS, ARGSIZE) invokes
|
/* __builtin_apply (FUNCTION, ARGUMENTS, ARGSIZE) invokes
|
FUNCTION with a copy of the parameters described by
|
FUNCTION with a copy of the parameters described by
|
ARGUMENTS, and ARGSIZE. It returns a block of memory
|
ARGUMENTS, and ARGSIZE. It returns a block of memory
|
allocated on the stack into which is stored all the registers
|
allocated on the stack into which is stored all the registers
|
that might possibly be used for returning the result of a
|
that might possibly be used for returning the result of a
|
function. ARGUMENTS is the value returned by
|
function. ARGUMENTS is the value returned by
|
__builtin_apply_args. ARGSIZE is the number of bytes of
|
__builtin_apply_args. ARGSIZE is the number of bytes of
|
arguments that must be copied. ??? How should this value be
|
arguments that must be copied. ??? How should this value be
|
computed? We'll also need a safe worst case value for varargs
|
computed? We'll also need a safe worst case value for varargs
|
functions. */
|
functions. */
|
case BUILT_IN_APPLY:
|
case BUILT_IN_APPLY:
|
if (!validate_arglist (arglist, POINTER_TYPE,
|
if (!validate_arglist (arglist, POINTER_TYPE,
|
POINTER_TYPE, INTEGER_TYPE, VOID_TYPE)
|
POINTER_TYPE, INTEGER_TYPE, VOID_TYPE)
|
&& !validate_arglist (arglist, REFERENCE_TYPE,
|
&& !validate_arglist (arglist, REFERENCE_TYPE,
|
POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return const0_rtx;
|
return const0_rtx;
|
else
|
else
|
{
|
{
|
int i;
|
int i;
|
tree t;
|
tree t;
|
rtx ops[3];
|
rtx ops[3];
|
|
|
for (t = arglist, i = 0; t; t = TREE_CHAIN (t), i++)
|
for (t = arglist, i = 0; t; t = TREE_CHAIN (t), i++)
|
ops[i] = expand_normal (TREE_VALUE (t));
|
ops[i] = expand_normal (TREE_VALUE (t));
|
|
|
return expand_builtin_apply (ops[0], ops[1], ops[2]);
|
return expand_builtin_apply (ops[0], ops[1], ops[2]);
|
}
|
}
|
|
|
/* __builtin_return (RESULT) causes the function to return the
|
/* __builtin_return (RESULT) causes the function to return the
|
value described by RESULT. RESULT is address of the block of
|
value described by RESULT. RESULT is address of the block of
|
memory returned by __builtin_apply. */
|
memory returned by __builtin_apply. */
|
case BUILT_IN_RETURN:
|
case BUILT_IN_RETURN:
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
expand_builtin_return (expand_normal (TREE_VALUE (arglist)));
|
expand_builtin_return (expand_normal (TREE_VALUE (arglist)));
|
return const0_rtx;
|
return const0_rtx;
|
|
|
case BUILT_IN_SAVEREGS:
|
case BUILT_IN_SAVEREGS:
|
return expand_builtin_saveregs ();
|
return expand_builtin_saveregs ();
|
|
|
case BUILT_IN_ARGS_INFO:
|
case BUILT_IN_ARGS_INFO:
|
return expand_builtin_args_info (arglist);
|
return expand_builtin_args_info (arglist);
|
|
|
/* Return the address of the first anonymous stack arg. */
|
/* Return the address of the first anonymous stack arg. */
|
case BUILT_IN_NEXT_ARG:
|
case BUILT_IN_NEXT_ARG:
|
if (fold_builtin_next_arg (arglist))
|
if (fold_builtin_next_arg (arglist))
|
return const0_rtx;
|
return const0_rtx;
|
return expand_builtin_next_arg ();
|
return expand_builtin_next_arg ();
|
|
|
case BUILT_IN_CLASSIFY_TYPE:
|
case BUILT_IN_CLASSIFY_TYPE:
|
return expand_builtin_classify_type (arglist);
|
return expand_builtin_classify_type (arglist);
|
|
|
case BUILT_IN_CONSTANT_P:
|
case BUILT_IN_CONSTANT_P:
|
return const0_rtx;
|
return const0_rtx;
|
|
|
case BUILT_IN_FRAME_ADDRESS:
|
case BUILT_IN_FRAME_ADDRESS:
|
case BUILT_IN_RETURN_ADDRESS:
|
case BUILT_IN_RETURN_ADDRESS:
|
return expand_builtin_frame_address (fndecl, arglist);
|
return expand_builtin_frame_address (fndecl, arglist);
|
|
|
/* Returns the address of the area where the structure is returned.
|
/* Returns the address of the area where the structure is returned.
|
0 otherwise. */
|
0 otherwise. */
|
case BUILT_IN_AGGREGATE_INCOMING_ADDRESS:
|
case BUILT_IN_AGGREGATE_INCOMING_ADDRESS:
|
if (arglist != 0
|
if (arglist != 0
|
|| ! AGGREGATE_TYPE_P (TREE_TYPE (TREE_TYPE (current_function_decl)))
|
|| ! AGGREGATE_TYPE_P (TREE_TYPE (TREE_TYPE (current_function_decl)))
|
|| !MEM_P (DECL_RTL (DECL_RESULT (current_function_decl))))
|
|| !MEM_P (DECL_RTL (DECL_RESULT (current_function_decl))))
|
return const0_rtx;
|
return const0_rtx;
|
else
|
else
|
return XEXP (DECL_RTL (DECL_RESULT (current_function_decl)), 0);
|
return XEXP (DECL_RTL (DECL_RESULT (current_function_decl)), 0);
|
|
|
case BUILT_IN_ALLOCA:
|
case BUILT_IN_ALLOCA:
|
target = expand_builtin_alloca (arglist, target);
|
target = expand_builtin_alloca (arglist, target);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STACK_SAVE:
|
case BUILT_IN_STACK_SAVE:
|
return expand_stack_save ();
|
return expand_stack_save ();
|
|
|
case BUILT_IN_STACK_RESTORE:
|
case BUILT_IN_STACK_RESTORE:
|
expand_stack_restore (TREE_VALUE (arglist));
|
expand_stack_restore (TREE_VALUE (arglist));
|
return const0_rtx;
|
return const0_rtx;
|
|
|
CASE_INT_FN (BUILT_IN_FFS):
|
CASE_INT_FN (BUILT_IN_FFS):
|
case BUILT_IN_FFSIMAX:
|
case BUILT_IN_FFSIMAX:
|
target = expand_builtin_unop (target_mode, arglist, target,
|
target = expand_builtin_unop (target_mode, arglist, target,
|
subtarget, ffs_optab);
|
subtarget, ffs_optab);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_CLZ):
|
CASE_INT_FN (BUILT_IN_CLZ):
|
case BUILT_IN_CLZIMAX:
|
case BUILT_IN_CLZIMAX:
|
target = expand_builtin_unop (target_mode, arglist, target,
|
target = expand_builtin_unop (target_mode, arglist, target,
|
subtarget, clz_optab);
|
subtarget, clz_optab);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_CTZ):
|
CASE_INT_FN (BUILT_IN_CTZ):
|
case BUILT_IN_CTZIMAX:
|
case BUILT_IN_CTZIMAX:
|
target = expand_builtin_unop (target_mode, arglist, target,
|
target = expand_builtin_unop (target_mode, arglist, target,
|
subtarget, ctz_optab);
|
subtarget, ctz_optab);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_POPCOUNT):
|
CASE_INT_FN (BUILT_IN_POPCOUNT):
|
case BUILT_IN_POPCOUNTIMAX:
|
case BUILT_IN_POPCOUNTIMAX:
|
target = expand_builtin_unop (target_mode, arglist, target,
|
target = expand_builtin_unop (target_mode, arglist, target,
|
subtarget, popcount_optab);
|
subtarget, popcount_optab);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_PARITY):
|
CASE_INT_FN (BUILT_IN_PARITY):
|
case BUILT_IN_PARITYIMAX:
|
case BUILT_IN_PARITYIMAX:
|
target = expand_builtin_unop (target_mode, arglist, target,
|
target = expand_builtin_unop (target_mode, arglist, target,
|
subtarget, parity_optab);
|
subtarget, parity_optab);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRLEN:
|
case BUILT_IN_STRLEN:
|
target = expand_builtin_strlen (arglist, target, target_mode);
|
target = expand_builtin_strlen (arglist, target, target_mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRCPY:
|
case BUILT_IN_STRCPY:
|
target = expand_builtin_strcpy (fndecl, arglist, target, mode);
|
target = expand_builtin_strcpy (fndecl, arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRNCPY:
|
case BUILT_IN_STRNCPY:
|
target = expand_builtin_strncpy (exp, target, mode);
|
target = expand_builtin_strncpy (exp, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STPCPY:
|
case BUILT_IN_STPCPY:
|
target = expand_builtin_stpcpy (exp, target, mode);
|
target = expand_builtin_stpcpy (exp, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRCAT:
|
case BUILT_IN_STRCAT:
|
target = expand_builtin_strcat (fndecl, arglist, target, mode);
|
target = expand_builtin_strcat (fndecl, arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRNCAT:
|
case BUILT_IN_STRNCAT:
|
target = expand_builtin_strncat (arglist, target, mode);
|
target = expand_builtin_strncat (arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRSPN:
|
case BUILT_IN_STRSPN:
|
target = expand_builtin_strspn (arglist, target, mode);
|
target = expand_builtin_strspn (arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRCSPN:
|
case BUILT_IN_STRCSPN:
|
target = expand_builtin_strcspn (arglist, target, mode);
|
target = expand_builtin_strcspn (arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRSTR:
|
case BUILT_IN_STRSTR:
|
target = expand_builtin_strstr (arglist, TREE_TYPE (exp), target, mode);
|
target = expand_builtin_strstr (arglist, TREE_TYPE (exp), target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRPBRK:
|
case BUILT_IN_STRPBRK:
|
target = expand_builtin_strpbrk (arglist, TREE_TYPE (exp), target, mode);
|
target = expand_builtin_strpbrk (arglist, TREE_TYPE (exp), target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_INDEX:
|
case BUILT_IN_INDEX:
|
case BUILT_IN_STRCHR:
|
case BUILT_IN_STRCHR:
|
target = expand_builtin_strchr (arglist, TREE_TYPE (exp), target, mode);
|
target = expand_builtin_strchr (arglist, TREE_TYPE (exp), target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_RINDEX:
|
case BUILT_IN_RINDEX:
|
case BUILT_IN_STRRCHR:
|
case BUILT_IN_STRRCHR:
|
target = expand_builtin_strrchr (arglist, TREE_TYPE (exp), target, mode);
|
target = expand_builtin_strrchr (arglist, TREE_TYPE (exp), target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_MEMCPY:
|
case BUILT_IN_MEMCPY:
|
target = expand_builtin_memcpy (exp, target, mode);
|
target = expand_builtin_memcpy (exp, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_MEMPCPY:
|
case BUILT_IN_MEMPCPY:
|
target = expand_builtin_mempcpy (arglist, TREE_TYPE (exp), target, mode, /*endp=*/ 1);
|
target = expand_builtin_mempcpy (arglist, TREE_TYPE (exp), target, mode, /*endp=*/ 1);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_MEMMOVE:
|
case BUILT_IN_MEMMOVE:
|
target = expand_builtin_memmove (arglist, TREE_TYPE (exp), target,
|
target = expand_builtin_memmove (arglist, TREE_TYPE (exp), target,
|
mode, exp);
|
mode, exp);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_BCOPY:
|
case BUILT_IN_BCOPY:
|
target = expand_builtin_bcopy (exp);
|
target = expand_builtin_bcopy (exp);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_MEMSET:
|
case BUILT_IN_MEMSET:
|
target = expand_builtin_memset (arglist, target, mode, exp);
|
target = expand_builtin_memset (arglist, target, mode, exp);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_BZERO:
|
case BUILT_IN_BZERO:
|
target = expand_builtin_bzero (exp);
|
target = expand_builtin_bzero (exp);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRCMP:
|
case BUILT_IN_STRCMP:
|
target = expand_builtin_strcmp (exp, target, mode);
|
target = expand_builtin_strcmp (exp, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRNCMP:
|
case BUILT_IN_STRNCMP:
|
target = expand_builtin_strncmp (exp, target, mode);
|
target = expand_builtin_strncmp (exp, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_BCMP:
|
case BUILT_IN_BCMP:
|
case BUILT_IN_MEMCMP:
|
case BUILT_IN_MEMCMP:
|
target = expand_builtin_memcmp (exp, arglist, target, mode);
|
target = expand_builtin_memcmp (exp, arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_SETJMP:
|
case BUILT_IN_SETJMP:
|
/* This should have been lowered to the builtins below. */
|
/* This should have been lowered to the builtins below. */
|
gcc_unreachable ();
|
gcc_unreachable ();
|
|
|
case BUILT_IN_SETJMP_SETUP:
|
case BUILT_IN_SETJMP_SETUP:
|
/* __builtin_setjmp_setup is passed a pointer to an array of five words
|
/* __builtin_setjmp_setup is passed a pointer to an array of five words
|
and the receiver label. */
|
and the receiver label. */
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
rtx buf_addr = expand_expr (TREE_VALUE (arglist), subtarget,
|
rtx buf_addr = expand_expr (TREE_VALUE (arglist), subtarget,
|
VOIDmode, EXPAND_NORMAL);
|
VOIDmode, EXPAND_NORMAL);
|
tree label = TREE_OPERAND (TREE_VALUE (TREE_CHAIN (arglist)), 0);
|
tree label = TREE_OPERAND (TREE_VALUE (TREE_CHAIN (arglist)), 0);
|
rtx label_r = label_rtx (label);
|
rtx label_r = label_rtx (label);
|
|
|
/* This is copied from the handling of non-local gotos. */
|
/* This is copied from the handling of non-local gotos. */
|
expand_builtin_setjmp_setup (buf_addr, label_r);
|
expand_builtin_setjmp_setup (buf_addr, label_r);
|
nonlocal_goto_handler_labels
|
nonlocal_goto_handler_labels
|
= gen_rtx_EXPR_LIST (VOIDmode, label_r,
|
= gen_rtx_EXPR_LIST (VOIDmode, label_r,
|
nonlocal_goto_handler_labels);
|
nonlocal_goto_handler_labels);
|
/* ??? Do not let expand_label treat us as such since we would
|
/* ??? Do not let expand_label treat us as such since we would
|
not want to be both on the list of non-local labels and on
|
not want to be both on the list of non-local labels and on
|
the list of forced labels. */
|
the list of forced labels. */
|
FORCED_LABEL (label) = 0;
|
FORCED_LABEL (label) = 0;
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
break;
|
break;
|
|
|
case BUILT_IN_SETJMP_DISPATCHER:
|
case BUILT_IN_SETJMP_DISPATCHER:
|
/* __builtin_setjmp_dispatcher is passed the dispatcher label. */
|
/* __builtin_setjmp_dispatcher is passed the dispatcher label. */
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree label = TREE_OPERAND (TREE_VALUE (arglist), 0);
|
tree label = TREE_OPERAND (TREE_VALUE (arglist), 0);
|
rtx label_r = label_rtx (label);
|
rtx label_r = label_rtx (label);
|
|
|
/* Remove the dispatcher label from the list of non-local labels
|
/* Remove the dispatcher label from the list of non-local labels
|
since the receiver labels have been added to it above. */
|
since the receiver labels have been added to it above. */
|
remove_node_from_expr_list (label_r, &nonlocal_goto_handler_labels);
|
remove_node_from_expr_list (label_r, &nonlocal_goto_handler_labels);
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
break;
|
break;
|
|
|
case BUILT_IN_SETJMP_RECEIVER:
|
case BUILT_IN_SETJMP_RECEIVER:
|
/* __builtin_setjmp_receiver is passed the receiver label. */
|
/* __builtin_setjmp_receiver is passed the receiver label. */
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
tree label = TREE_OPERAND (TREE_VALUE (arglist), 0);
|
tree label = TREE_OPERAND (TREE_VALUE (arglist), 0);
|
rtx label_r = label_rtx (label);
|
rtx label_r = label_rtx (label);
|
|
|
expand_builtin_setjmp_receiver (label_r);
|
expand_builtin_setjmp_receiver (label_r);
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
break;
|
break;
|
|
|
/* __builtin_longjmp is passed a pointer to an array of five words.
|
/* __builtin_longjmp is passed a pointer to an array of five words.
|
It's similar to the C library longjmp function but works with
|
It's similar to the C library longjmp function but works with
|
__builtin_setjmp above. */
|
__builtin_setjmp above. */
|
case BUILT_IN_LONGJMP:
|
case BUILT_IN_LONGJMP:
|
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
{
|
{
|
rtx buf_addr = expand_expr (TREE_VALUE (arglist), subtarget,
|
rtx buf_addr = expand_expr (TREE_VALUE (arglist), subtarget,
|
VOIDmode, EXPAND_NORMAL);
|
VOIDmode, EXPAND_NORMAL);
|
rtx value = expand_normal (TREE_VALUE (TREE_CHAIN (arglist)));
|
rtx value = expand_normal (TREE_VALUE (TREE_CHAIN (arglist)));
|
|
|
if (value != const1_rtx)
|
if (value != const1_rtx)
|
{
|
{
|
error ("%<__builtin_longjmp%> second argument must be 1");
|
error ("%<__builtin_longjmp%> second argument must be 1");
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
expand_builtin_longjmp (buf_addr, value);
|
expand_builtin_longjmp (buf_addr, value);
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
break;
|
break;
|
|
|
case BUILT_IN_NONLOCAL_GOTO:
|
case BUILT_IN_NONLOCAL_GOTO:
|
target = expand_builtin_nonlocal_goto (arglist);
|
target = expand_builtin_nonlocal_goto (arglist);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
/* This updates the setjmp buffer that is its argument with the value
|
/* This updates the setjmp buffer that is its argument with the value
|
of the current stack pointer. */
|
of the current stack pointer. */
|
case BUILT_IN_UPDATE_SETJMP_BUF:
|
case BUILT_IN_UPDATE_SETJMP_BUF:
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
{
|
{
|
rtx buf_addr
|
rtx buf_addr
|
= expand_normal (TREE_VALUE (arglist));
|
= expand_normal (TREE_VALUE (arglist));
|
|
|
expand_builtin_update_setjmp_buf (buf_addr);
|
expand_builtin_update_setjmp_buf (buf_addr);
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
break;
|
break;
|
|
|
case BUILT_IN_TRAP:
|
case BUILT_IN_TRAP:
|
expand_builtin_trap ();
|
expand_builtin_trap ();
|
return const0_rtx;
|
return const0_rtx;
|
|
|
case BUILT_IN_PRINTF:
|
case BUILT_IN_PRINTF:
|
target = expand_builtin_printf (exp, target, mode, false);
|
target = expand_builtin_printf (exp, target, mode, false);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_PRINTF_UNLOCKED:
|
case BUILT_IN_PRINTF_UNLOCKED:
|
target = expand_builtin_printf (exp, target, mode, true);
|
target = expand_builtin_printf (exp, target, mode, true);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FPUTS:
|
case BUILT_IN_FPUTS:
|
target = expand_builtin_fputs (arglist, target, false);
|
target = expand_builtin_fputs (arglist, target, false);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
case BUILT_IN_FPUTS_UNLOCKED:
|
case BUILT_IN_FPUTS_UNLOCKED:
|
target = expand_builtin_fputs (arglist, target, true);
|
target = expand_builtin_fputs (arglist, target, true);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FPRINTF:
|
case BUILT_IN_FPRINTF:
|
target = expand_builtin_fprintf (exp, target, mode, false);
|
target = expand_builtin_fprintf (exp, target, mode, false);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FPRINTF_UNLOCKED:
|
case BUILT_IN_FPRINTF_UNLOCKED:
|
target = expand_builtin_fprintf (exp, target, mode, true);
|
target = expand_builtin_fprintf (exp, target, mode, true);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_SPRINTF:
|
case BUILT_IN_SPRINTF:
|
target = expand_builtin_sprintf (arglist, target, mode);
|
target = expand_builtin_sprintf (arglist, target, mode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_SIGNBIT):
|
CASE_FLT_FN (BUILT_IN_SIGNBIT):
|
target = expand_builtin_signbit (exp, target);
|
target = expand_builtin_signbit (exp, target);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
/* Various hooks for the DWARF 2 __throw routine. */
|
/* Various hooks for the DWARF 2 __throw routine. */
|
case BUILT_IN_UNWIND_INIT:
|
case BUILT_IN_UNWIND_INIT:
|
expand_builtin_unwind_init ();
|
expand_builtin_unwind_init ();
|
return const0_rtx;
|
return const0_rtx;
|
case BUILT_IN_DWARF_CFA:
|
case BUILT_IN_DWARF_CFA:
|
return virtual_cfa_rtx;
|
return virtual_cfa_rtx;
|
#ifdef DWARF2_UNWIND_INFO
|
#ifdef DWARF2_UNWIND_INFO
|
case BUILT_IN_DWARF_SP_COLUMN:
|
case BUILT_IN_DWARF_SP_COLUMN:
|
return expand_builtin_dwarf_sp_column ();
|
return expand_builtin_dwarf_sp_column ();
|
case BUILT_IN_INIT_DWARF_REG_SIZES:
|
case BUILT_IN_INIT_DWARF_REG_SIZES:
|
expand_builtin_init_dwarf_reg_sizes (TREE_VALUE (arglist));
|
expand_builtin_init_dwarf_reg_sizes (TREE_VALUE (arglist));
|
return const0_rtx;
|
return const0_rtx;
|
#endif
|
#endif
|
case BUILT_IN_FROB_RETURN_ADDR:
|
case BUILT_IN_FROB_RETURN_ADDR:
|
return expand_builtin_frob_return_addr (TREE_VALUE (arglist));
|
return expand_builtin_frob_return_addr (TREE_VALUE (arglist));
|
case BUILT_IN_EXTRACT_RETURN_ADDR:
|
case BUILT_IN_EXTRACT_RETURN_ADDR:
|
return expand_builtin_extract_return_addr (TREE_VALUE (arglist));
|
return expand_builtin_extract_return_addr (TREE_VALUE (arglist));
|
case BUILT_IN_EH_RETURN:
|
case BUILT_IN_EH_RETURN:
|
expand_builtin_eh_return (TREE_VALUE (arglist),
|
expand_builtin_eh_return (TREE_VALUE (arglist),
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
return const0_rtx;
|
return const0_rtx;
|
#ifdef EH_RETURN_DATA_REGNO
|
#ifdef EH_RETURN_DATA_REGNO
|
case BUILT_IN_EH_RETURN_DATA_REGNO:
|
case BUILT_IN_EH_RETURN_DATA_REGNO:
|
return expand_builtin_eh_return_data_regno (arglist);
|
return expand_builtin_eh_return_data_regno (arglist);
|
#endif
|
#endif
|
case BUILT_IN_EXTEND_POINTER:
|
case BUILT_IN_EXTEND_POINTER:
|
return expand_builtin_extend_pointer (TREE_VALUE (arglist));
|
return expand_builtin_extend_pointer (TREE_VALUE (arglist));
|
|
|
case BUILT_IN_VA_START:
|
case BUILT_IN_VA_START:
|
case BUILT_IN_STDARG_START:
|
case BUILT_IN_STDARG_START:
|
return expand_builtin_va_start (arglist);
|
return expand_builtin_va_start (arglist);
|
case BUILT_IN_VA_END:
|
case BUILT_IN_VA_END:
|
return expand_builtin_va_end (arglist);
|
return expand_builtin_va_end (arglist);
|
case BUILT_IN_VA_COPY:
|
case BUILT_IN_VA_COPY:
|
return expand_builtin_va_copy (arglist);
|
return expand_builtin_va_copy (arglist);
|
case BUILT_IN_EXPECT:
|
case BUILT_IN_EXPECT:
|
return expand_builtin_expect (arglist, target);
|
return expand_builtin_expect (arglist, target);
|
case BUILT_IN_PREFETCH:
|
case BUILT_IN_PREFETCH:
|
expand_builtin_prefetch (arglist);
|
expand_builtin_prefetch (arglist);
|
return const0_rtx;
|
return const0_rtx;
|
|
|
case BUILT_IN_PROFILE_FUNC_ENTER:
|
case BUILT_IN_PROFILE_FUNC_ENTER:
|
return expand_builtin_profile_func (false);
|
return expand_builtin_profile_func (false);
|
case BUILT_IN_PROFILE_FUNC_EXIT:
|
case BUILT_IN_PROFILE_FUNC_EXIT:
|
return expand_builtin_profile_func (true);
|
return expand_builtin_profile_func (true);
|
|
|
case BUILT_IN_INIT_TRAMPOLINE:
|
case BUILT_IN_INIT_TRAMPOLINE:
|
return expand_builtin_init_trampoline (arglist);
|
return expand_builtin_init_trampoline (arglist);
|
case BUILT_IN_ADJUST_TRAMPOLINE:
|
case BUILT_IN_ADJUST_TRAMPOLINE:
|
return expand_builtin_adjust_trampoline (arglist);
|
return expand_builtin_adjust_trampoline (arglist);
|
|
|
case BUILT_IN_FORK:
|
case BUILT_IN_FORK:
|
case BUILT_IN_EXECL:
|
case BUILT_IN_EXECL:
|
case BUILT_IN_EXECV:
|
case BUILT_IN_EXECV:
|
case BUILT_IN_EXECLP:
|
case BUILT_IN_EXECLP:
|
case BUILT_IN_EXECLE:
|
case BUILT_IN_EXECLE:
|
case BUILT_IN_EXECVP:
|
case BUILT_IN_EXECVP:
|
case BUILT_IN_EXECVE:
|
case BUILT_IN_EXECVE:
|
target = expand_builtin_fork_or_exec (fndecl, arglist, target, ignore);
|
target = expand_builtin_fork_or_exec (fndecl, arglist, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FETCH_AND_ADD_1:
|
case BUILT_IN_FETCH_AND_ADD_1:
|
case BUILT_IN_FETCH_AND_ADD_2:
|
case BUILT_IN_FETCH_AND_ADD_2:
|
case BUILT_IN_FETCH_AND_ADD_4:
|
case BUILT_IN_FETCH_AND_ADD_4:
|
case BUILT_IN_FETCH_AND_ADD_8:
|
case BUILT_IN_FETCH_AND_ADD_8:
|
case BUILT_IN_FETCH_AND_ADD_16:
|
case BUILT_IN_FETCH_AND_ADD_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_ADD_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_ADD_1);
|
target = expand_builtin_sync_operation (mode, arglist, PLUS,
|
target = expand_builtin_sync_operation (mode, arglist, PLUS,
|
false, target, ignore);
|
false, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FETCH_AND_SUB_1:
|
case BUILT_IN_FETCH_AND_SUB_1:
|
case BUILT_IN_FETCH_AND_SUB_2:
|
case BUILT_IN_FETCH_AND_SUB_2:
|
case BUILT_IN_FETCH_AND_SUB_4:
|
case BUILT_IN_FETCH_AND_SUB_4:
|
case BUILT_IN_FETCH_AND_SUB_8:
|
case BUILT_IN_FETCH_AND_SUB_8:
|
case BUILT_IN_FETCH_AND_SUB_16:
|
case BUILT_IN_FETCH_AND_SUB_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_SUB_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_SUB_1);
|
target = expand_builtin_sync_operation (mode, arglist, MINUS,
|
target = expand_builtin_sync_operation (mode, arglist, MINUS,
|
false, target, ignore);
|
false, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FETCH_AND_OR_1:
|
case BUILT_IN_FETCH_AND_OR_1:
|
case BUILT_IN_FETCH_AND_OR_2:
|
case BUILT_IN_FETCH_AND_OR_2:
|
case BUILT_IN_FETCH_AND_OR_4:
|
case BUILT_IN_FETCH_AND_OR_4:
|
case BUILT_IN_FETCH_AND_OR_8:
|
case BUILT_IN_FETCH_AND_OR_8:
|
case BUILT_IN_FETCH_AND_OR_16:
|
case BUILT_IN_FETCH_AND_OR_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_OR_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_OR_1);
|
target = expand_builtin_sync_operation (mode, arglist, IOR,
|
target = expand_builtin_sync_operation (mode, arglist, IOR,
|
false, target, ignore);
|
false, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FETCH_AND_AND_1:
|
case BUILT_IN_FETCH_AND_AND_1:
|
case BUILT_IN_FETCH_AND_AND_2:
|
case BUILT_IN_FETCH_AND_AND_2:
|
case BUILT_IN_FETCH_AND_AND_4:
|
case BUILT_IN_FETCH_AND_AND_4:
|
case BUILT_IN_FETCH_AND_AND_8:
|
case BUILT_IN_FETCH_AND_AND_8:
|
case BUILT_IN_FETCH_AND_AND_16:
|
case BUILT_IN_FETCH_AND_AND_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_AND_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_AND_1);
|
target = expand_builtin_sync_operation (mode, arglist, AND,
|
target = expand_builtin_sync_operation (mode, arglist, AND,
|
false, target, ignore);
|
false, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FETCH_AND_XOR_1:
|
case BUILT_IN_FETCH_AND_XOR_1:
|
case BUILT_IN_FETCH_AND_XOR_2:
|
case BUILT_IN_FETCH_AND_XOR_2:
|
case BUILT_IN_FETCH_AND_XOR_4:
|
case BUILT_IN_FETCH_AND_XOR_4:
|
case BUILT_IN_FETCH_AND_XOR_8:
|
case BUILT_IN_FETCH_AND_XOR_8:
|
case BUILT_IN_FETCH_AND_XOR_16:
|
case BUILT_IN_FETCH_AND_XOR_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_XOR_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_XOR_1);
|
target = expand_builtin_sync_operation (mode, arglist, XOR,
|
target = expand_builtin_sync_operation (mode, arglist, XOR,
|
false, target, ignore);
|
false, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_FETCH_AND_NAND_1:
|
case BUILT_IN_FETCH_AND_NAND_1:
|
case BUILT_IN_FETCH_AND_NAND_2:
|
case BUILT_IN_FETCH_AND_NAND_2:
|
case BUILT_IN_FETCH_AND_NAND_4:
|
case BUILT_IN_FETCH_AND_NAND_4:
|
case BUILT_IN_FETCH_AND_NAND_8:
|
case BUILT_IN_FETCH_AND_NAND_8:
|
case BUILT_IN_FETCH_AND_NAND_16:
|
case BUILT_IN_FETCH_AND_NAND_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_NAND_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_FETCH_AND_NAND_1);
|
target = expand_builtin_sync_operation (mode, arglist, NOT,
|
target = expand_builtin_sync_operation (mode, arglist, NOT,
|
false, target, ignore);
|
false, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_ADD_AND_FETCH_1:
|
case BUILT_IN_ADD_AND_FETCH_1:
|
case BUILT_IN_ADD_AND_FETCH_2:
|
case BUILT_IN_ADD_AND_FETCH_2:
|
case BUILT_IN_ADD_AND_FETCH_4:
|
case BUILT_IN_ADD_AND_FETCH_4:
|
case BUILT_IN_ADD_AND_FETCH_8:
|
case BUILT_IN_ADD_AND_FETCH_8:
|
case BUILT_IN_ADD_AND_FETCH_16:
|
case BUILT_IN_ADD_AND_FETCH_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_ADD_AND_FETCH_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_ADD_AND_FETCH_1);
|
target = expand_builtin_sync_operation (mode, arglist, PLUS,
|
target = expand_builtin_sync_operation (mode, arglist, PLUS,
|
true, target, ignore);
|
true, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_SUB_AND_FETCH_1:
|
case BUILT_IN_SUB_AND_FETCH_1:
|
case BUILT_IN_SUB_AND_FETCH_2:
|
case BUILT_IN_SUB_AND_FETCH_2:
|
case BUILT_IN_SUB_AND_FETCH_4:
|
case BUILT_IN_SUB_AND_FETCH_4:
|
case BUILT_IN_SUB_AND_FETCH_8:
|
case BUILT_IN_SUB_AND_FETCH_8:
|
case BUILT_IN_SUB_AND_FETCH_16:
|
case BUILT_IN_SUB_AND_FETCH_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_SUB_AND_FETCH_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_SUB_AND_FETCH_1);
|
target = expand_builtin_sync_operation (mode, arglist, MINUS,
|
target = expand_builtin_sync_operation (mode, arglist, MINUS,
|
true, target, ignore);
|
true, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_OR_AND_FETCH_1:
|
case BUILT_IN_OR_AND_FETCH_1:
|
case BUILT_IN_OR_AND_FETCH_2:
|
case BUILT_IN_OR_AND_FETCH_2:
|
case BUILT_IN_OR_AND_FETCH_4:
|
case BUILT_IN_OR_AND_FETCH_4:
|
case BUILT_IN_OR_AND_FETCH_8:
|
case BUILT_IN_OR_AND_FETCH_8:
|
case BUILT_IN_OR_AND_FETCH_16:
|
case BUILT_IN_OR_AND_FETCH_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_OR_AND_FETCH_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_OR_AND_FETCH_1);
|
target = expand_builtin_sync_operation (mode, arglist, IOR,
|
target = expand_builtin_sync_operation (mode, arglist, IOR,
|
true, target, ignore);
|
true, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_AND_AND_FETCH_1:
|
case BUILT_IN_AND_AND_FETCH_1:
|
case BUILT_IN_AND_AND_FETCH_2:
|
case BUILT_IN_AND_AND_FETCH_2:
|
case BUILT_IN_AND_AND_FETCH_4:
|
case BUILT_IN_AND_AND_FETCH_4:
|
case BUILT_IN_AND_AND_FETCH_8:
|
case BUILT_IN_AND_AND_FETCH_8:
|
case BUILT_IN_AND_AND_FETCH_16:
|
case BUILT_IN_AND_AND_FETCH_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_AND_AND_FETCH_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_AND_AND_FETCH_1);
|
target = expand_builtin_sync_operation (mode, arglist, AND,
|
target = expand_builtin_sync_operation (mode, arglist, AND,
|
true, target, ignore);
|
true, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_XOR_AND_FETCH_1:
|
case BUILT_IN_XOR_AND_FETCH_1:
|
case BUILT_IN_XOR_AND_FETCH_2:
|
case BUILT_IN_XOR_AND_FETCH_2:
|
case BUILT_IN_XOR_AND_FETCH_4:
|
case BUILT_IN_XOR_AND_FETCH_4:
|
case BUILT_IN_XOR_AND_FETCH_8:
|
case BUILT_IN_XOR_AND_FETCH_8:
|
case BUILT_IN_XOR_AND_FETCH_16:
|
case BUILT_IN_XOR_AND_FETCH_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_XOR_AND_FETCH_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_XOR_AND_FETCH_1);
|
target = expand_builtin_sync_operation (mode, arglist, XOR,
|
target = expand_builtin_sync_operation (mode, arglist, XOR,
|
true, target, ignore);
|
true, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_NAND_AND_FETCH_1:
|
case BUILT_IN_NAND_AND_FETCH_1:
|
case BUILT_IN_NAND_AND_FETCH_2:
|
case BUILT_IN_NAND_AND_FETCH_2:
|
case BUILT_IN_NAND_AND_FETCH_4:
|
case BUILT_IN_NAND_AND_FETCH_4:
|
case BUILT_IN_NAND_AND_FETCH_8:
|
case BUILT_IN_NAND_AND_FETCH_8:
|
case BUILT_IN_NAND_AND_FETCH_16:
|
case BUILT_IN_NAND_AND_FETCH_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_NAND_AND_FETCH_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_NAND_AND_FETCH_1);
|
target = expand_builtin_sync_operation (mode, arglist, NOT,
|
target = expand_builtin_sync_operation (mode, arglist, NOT,
|
true, target, ignore);
|
true, target, ignore);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_1:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_1:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_2:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_2:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_4:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_4:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_8:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_8:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_16:
|
case BUILT_IN_BOOL_COMPARE_AND_SWAP_16:
|
if (mode == VOIDmode)
|
if (mode == VOIDmode)
|
mode = TYPE_MODE (boolean_type_node);
|
mode = TYPE_MODE (boolean_type_node);
|
if (!target || !register_operand (target, mode))
|
if (!target || !register_operand (target, mode))
|
target = gen_reg_rtx (mode);
|
target = gen_reg_rtx (mode);
|
|
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_BOOL_COMPARE_AND_SWAP_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_BOOL_COMPARE_AND_SWAP_1);
|
target = expand_builtin_compare_and_swap (mode, arglist, true, target);
|
target = expand_builtin_compare_and_swap (mode, arglist, true, target);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_1:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_1:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_2:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_2:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_4:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_4:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_8:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_8:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_16:
|
case BUILT_IN_VAL_COMPARE_AND_SWAP_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_VAL_COMPARE_AND_SWAP_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_VAL_COMPARE_AND_SWAP_1);
|
target = expand_builtin_compare_and_swap (mode, arglist, false, target);
|
target = expand_builtin_compare_and_swap (mode, arglist, false, target);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_LOCK_TEST_AND_SET_1:
|
case BUILT_IN_LOCK_TEST_AND_SET_1:
|
case BUILT_IN_LOCK_TEST_AND_SET_2:
|
case BUILT_IN_LOCK_TEST_AND_SET_2:
|
case BUILT_IN_LOCK_TEST_AND_SET_4:
|
case BUILT_IN_LOCK_TEST_AND_SET_4:
|
case BUILT_IN_LOCK_TEST_AND_SET_8:
|
case BUILT_IN_LOCK_TEST_AND_SET_8:
|
case BUILT_IN_LOCK_TEST_AND_SET_16:
|
case BUILT_IN_LOCK_TEST_AND_SET_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_LOCK_TEST_AND_SET_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_LOCK_TEST_AND_SET_1);
|
target = expand_builtin_lock_test_and_set (mode, arglist, target);
|
target = expand_builtin_lock_test_and_set (mode, arglist, target);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_LOCK_RELEASE_1:
|
case BUILT_IN_LOCK_RELEASE_1:
|
case BUILT_IN_LOCK_RELEASE_2:
|
case BUILT_IN_LOCK_RELEASE_2:
|
case BUILT_IN_LOCK_RELEASE_4:
|
case BUILT_IN_LOCK_RELEASE_4:
|
case BUILT_IN_LOCK_RELEASE_8:
|
case BUILT_IN_LOCK_RELEASE_8:
|
case BUILT_IN_LOCK_RELEASE_16:
|
case BUILT_IN_LOCK_RELEASE_16:
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_LOCK_RELEASE_1);
|
mode = get_builtin_sync_mode (fcode - BUILT_IN_LOCK_RELEASE_1);
|
expand_builtin_lock_release (mode, arglist);
|
expand_builtin_lock_release (mode, arglist);
|
return const0_rtx;
|
return const0_rtx;
|
|
|
case BUILT_IN_SYNCHRONIZE:
|
case BUILT_IN_SYNCHRONIZE:
|
expand_builtin_synchronize ();
|
expand_builtin_synchronize ();
|
return const0_rtx;
|
return const0_rtx;
|
|
|
case BUILT_IN_OBJECT_SIZE:
|
case BUILT_IN_OBJECT_SIZE:
|
return expand_builtin_object_size (exp);
|
return expand_builtin_object_size (exp);
|
|
|
case BUILT_IN_MEMCPY_CHK:
|
case BUILT_IN_MEMCPY_CHK:
|
case BUILT_IN_MEMPCPY_CHK:
|
case BUILT_IN_MEMPCPY_CHK:
|
case BUILT_IN_MEMMOVE_CHK:
|
case BUILT_IN_MEMMOVE_CHK:
|
case BUILT_IN_MEMSET_CHK:
|
case BUILT_IN_MEMSET_CHK:
|
target = expand_builtin_memory_chk (exp, target, mode, fcode);
|
target = expand_builtin_memory_chk (exp, target, mode, fcode);
|
if (target)
|
if (target)
|
return target;
|
return target;
|
break;
|
break;
|
|
|
case BUILT_IN_STRCPY_CHK:
|
case BUILT_IN_STRCPY_CHK:
|
case BUILT_IN_STPCPY_CHK:
|
case BUILT_IN_STPCPY_CHK:
|
case BUILT_IN_STRNCPY_CHK:
|
case BUILT_IN_STRNCPY_CHK:
|
case BUILT_IN_STRCAT_CHK:
|
case BUILT_IN_STRCAT_CHK:
|
case BUILT_IN_SNPRINTF_CHK:
|
case BUILT_IN_SNPRINTF_CHK:
|
case BUILT_IN_VSNPRINTF_CHK:
|
case BUILT_IN_VSNPRINTF_CHK:
|
maybe_emit_chk_warning (exp, fcode);
|
maybe_emit_chk_warning (exp, fcode);
|
break;
|
break;
|
|
|
case BUILT_IN_SPRINTF_CHK:
|
case BUILT_IN_SPRINTF_CHK:
|
case BUILT_IN_VSPRINTF_CHK:
|
case BUILT_IN_VSPRINTF_CHK:
|
maybe_emit_sprintf_chk_warning (exp, fcode);
|
maybe_emit_sprintf_chk_warning (exp, fcode);
|
break;
|
break;
|
|
|
default: /* just do library call, if unknown builtin */
|
default: /* just do library call, if unknown builtin */
|
break;
|
break;
|
}
|
}
|
|
|
/* The switch statement above can drop through to cause the function
|
/* The switch statement above can drop through to cause the function
|
to be called normally. */
|
to be called normally. */
|
return expand_call (exp, target, ignore);
|
return expand_call (exp, target, ignore);
|
}
|
}
|
|
|
/* Determine whether a tree node represents a call to a built-in
|
/* Determine whether a tree node represents a call to a built-in
|
function. If the tree T is a call to a built-in function with
|
function. If the tree T is a call to a built-in function with
|
the right number of arguments of the appropriate types, return
|
the right number of arguments of the appropriate types, return
|
the DECL_FUNCTION_CODE of the call, e.g. BUILT_IN_SQRT.
|
the DECL_FUNCTION_CODE of the call, e.g. BUILT_IN_SQRT.
|
Otherwise the return value is END_BUILTINS. */
|
Otherwise the return value is END_BUILTINS. */
|
|
|
enum built_in_function
|
enum built_in_function
|
builtin_mathfn_code (tree t)
|
builtin_mathfn_code (tree t)
|
{
|
{
|
tree fndecl, arglist, parmlist;
|
tree fndecl, arglist, parmlist;
|
tree argtype, parmtype;
|
tree argtype, parmtype;
|
|
|
if (TREE_CODE (t) != CALL_EXPR
|
if (TREE_CODE (t) != CALL_EXPR
|
|| TREE_CODE (TREE_OPERAND (t, 0)) != ADDR_EXPR)
|
|| TREE_CODE (TREE_OPERAND (t, 0)) != ADDR_EXPR)
|
return END_BUILTINS;
|
return END_BUILTINS;
|
|
|
fndecl = get_callee_fndecl (t);
|
fndecl = get_callee_fndecl (t);
|
if (fndecl == NULL_TREE
|
if (fndecl == NULL_TREE
|
|| TREE_CODE (fndecl) != FUNCTION_DECL
|
|| TREE_CODE (fndecl) != FUNCTION_DECL
|
|| ! DECL_BUILT_IN (fndecl)
|
|| ! DECL_BUILT_IN (fndecl)
|
|| DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
|
|| DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
|
return END_BUILTINS;
|
return END_BUILTINS;
|
|
|
arglist = TREE_OPERAND (t, 1);
|
arglist = TREE_OPERAND (t, 1);
|
parmlist = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
|
parmlist = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
|
for (; parmlist; parmlist = TREE_CHAIN (parmlist))
|
for (; parmlist; parmlist = TREE_CHAIN (parmlist))
|
{
|
{
|
/* If a function doesn't take a variable number of arguments,
|
/* If a function doesn't take a variable number of arguments,
|
the last element in the list will have type `void'. */
|
the last element in the list will have type `void'. */
|
parmtype = TREE_VALUE (parmlist);
|
parmtype = TREE_VALUE (parmlist);
|
if (VOID_TYPE_P (parmtype))
|
if (VOID_TYPE_P (parmtype))
|
{
|
{
|
if (arglist)
|
if (arglist)
|
return END_BUILTINS;
|
return END_BUILTINS;
|
return DECL_FUNCTION_CODE (fndecl);
|
return DECL_FUNCTION_CODE (fndecl);
|
}
|
}
|
|
|
if (! arglist)
|
if (! arglist)
|
return END_BUILTINS;
|
return END_BUILTINS;
|
|
|
argtype = TREE_TYPE (TREE_VALUE (arglist));
|
argtype = TREE_TYPE (TREE_VALUE (arglist));
|
|
|
if (SCALAR_FLOAT_TYPE_P (parmtype))
|
if (SCALAR_FLOAT_TYPE_P (parmtype))
|
{
|
{
|
if (! SCALAR_FLOAT_TYPE_P (argtype))
|
if (! SCALAR_FLOAT_TYPE_P (argtype))
|
return END_BUILTINS;
|
return END_BUILTINS;
|
}
|
}
|
else if (COMPLEX_FLOAT_TYPE_P (parmtype))
|
else if (COMPLEX_FLOAT_TYPE_P (parmtype))
|
{
|
{
|
if (! COMPLEX_FLOAT_TYPE_P (argtype))
|
if (! COMPLEX_FLOAT_TYPE_P (argtype))
|
return END_BUILTINS;
|
return END_BUILTINS;
|
}
|
}
|
else if (POINTER_TYPE_P (parmtype))
|
else if (POINTER_TYPE_P (parmtype))
|
{
|
{
|
if (! POINTER_TYPE_P (argtype))
|
if (! POINTER_TYPE_P (argtype))
|
return END_BUILTINS;
|
return END_BUILTINS;
|
}
|
}
|
else if (INTEGRAL_TYPE_P (parmtype))
|
else if (INTEGRAL_TYPE_P (parmtype))
|
{
|
{
|
if (! INTEGRAL_TYPE_P (argtype))
|
if (! INTEGRAL_TYPE_P (argtype))
|
return END_BUILTINS;
|
return END_BUILTINS;
|
}
|
}
|
else
|
else
|
return END_BUILTINS;
|
return END_BUILTINS;
|
|
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
}
|
}
|
|
|
/* Variable-length argument list. */
|
/* Variable-length argument list. */
|
return DECL_FUNCTION_CODE (fndecl);
|
return DECL_FUNCTION_CODE (fndecl);
|
}
|
}
|
|
|
/* Fold a call to __builtin_constant_p, if we know it will evaluate to a
|
/* Fold a call to __builtin_constant_p, if we know it will evaluate to a
|
constant. ARGLIST is the argument list of the call. */
|
constant. ARGLIST is the argument list of the call. */
|
|
|
static tree
|
static tree
|
fold_builtin_constant_p (tree arglist)
|
fold_builtin_constant_p (tree arglist)
|
{
|
{
|
if (arglist == 0)
|
if (arglist == 0)
|
return 0;
|
return 0;
|
|
|
arglist = TREE_VALUE (arglist);
|
arglist = TREE_VALUE (arglist);
|
|
|
/* We return 1 for a numeric type that's known to be a constant
|
/* We return 1 for a numeric type that's known to be a constant
|
value at compile-time or for an aggregate type that's a
|
value at compile-time or for an aggregate type that's a
|
literal constant. */
|
literal constant. */
|
STRIP_NOPS (arglist);
|
STRIP_NOPS (arglist);
|
|
|
/* If we know this is a constant, emit the constant of one. */
|
/* If we know this is a constant, emit the constant of one. */
|
if (CONSTANT_CLASS_P (arglist)
|
if (CONSTANT_CLASS_P (arglist)
|
|| (TREE_CODE (arglist) == CONSTRUCTOR
|
|| (TREE_CODE (arglist) == CONSTRUCTOR
|
&& TREE_CONSTANT (arglist)))
|
&& TREE_CONSTANT (arglist)))
|
return integer_one_node;
|
return integer_one_node;
|
if (TREE_CODE (arglist) == ADDR_EXPR)
|
if (TREE_CODE (arglist) == ADDR_EXPR)
|
{
|
{
|
tree op = TREE_OPERAND (arglist, 0);
|
tree op = TREE_OPERAND (arglist, 0);
|
if (TREE_CODE (op) == STRING_CST
|
if (TREE_CODE (op) == STRING_CST
|
|| (TREE_CODE (op) == ARRAY_REF
|
|| (TREE_CODE (op) == ARRAY_REF
|
&& integer_zerop (TREE_OPERAND (op, 1))
|
&& integer_zerop (TREE_OPERAND (op, 1))
|
&& TREE_CODE (TREE_OPERAND (op, 0)) == STRING_CST))
|
&& TREE_CODE (TREE_OPERAND (op, 0)) == STRING_CST))
|
return integer_one_node;
|
return integer_one_node;
|
}
|
}
|
|
|
/* If this expression has side effects, show we don't know it to be a
|
/* If this expression has side effects, show we don't know it to be a
|
constant. Likewise if it's a pointer or aggregate type since in
|
constant. Likewise if it's a pointer or aggregate type since in
|
those case we only want literals, since those are only optimized
|
those case we only want literals, since those are only optimized
|
when generating RTL, not later.
|
when generating RTL, not later.
|
And finally, if we are compiling an initializer, not code, we
|
And finally, if we are compiling an initializer, not code, we
|
need to return a definite result now; there's not going to be any
|
need to return a definite result now; there's not going to be any
|
more optimization done. */
|
more optimization done. */
|
if (TREE_SIDE_EFFECTS (arglist)
|
if (TREE_SIDE_EFFECTS (arglist)
|
|| AGGREGATE_TYPE_P (TREE_TYPE (arglist))
|
|| AGGREGATE_TYPE_P (TREE_TYPE (arglist))
|
|| POINTER_TYPE_P (TREE_TYPE (arglist))
|
|| POINTER_TYPE_P (TREE_TYPE (arglist))
|
|| cfun == 0
|
|| cfun == 0
|
|| folding_initializer)
|
|| folding_initializer)
|
return integer_zero_node;
|
return integer_zero_node;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Fold a call to __builtin_expect, if we expect that a comparison against
|
/* Fold a call to __builtin_expect, if we expect that a comparison against
|
the argument will fold to a constant. In practice, this means a true
|
the argument will fold to a constant. In practice, this means a true
|
constant or the address of a non-weak symbol. ARGLIST is the argument
|
constant or the address of a non-weak symbol. ARGLIST is the argument
|
list of the call. */
|
list of the call. */
|
|
|
static tree
|
static tree
|
fold_builtin_expect (tree arglist)
|
fold_builtin_expect (tree arglist)
|
{
|
{
|
tree arg, inner;
|
tree arg, inner;
|
|
|
if (arglist == 0)
|
if (arglist == 0)
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
|
|
/* If the argument isn't invariant, then there's nothing we can do. */
|
/* If the argument isn't invariant, then there's nothing we can do. */
|
if (!TREE_INVARIANT (arg))
|
if (!TREE_INVARIANT (arg))
|
return 0;
|
return 0;
|
|
|
/* If we're looking at an address of a weak decl, then do not fold. */
|
/* If we're looking at an address of a weak decl, then do not fold. */
|
inner = arg;
|
inner = arg;
|
STRIP_NOPS (inner);
|
STRIP_NOPS (inner);
|
if (TREE_CODE (inner) == ADDR_EXPR)
|
if (TREE_CODE (inner) == ADDR_EXPR)
|
{
|
{
|
do
|
do
|
{
|
{
|
inner = TREE_OPERAND (inner, 0);
|
inner = TREE_OPERAND (inner, 0);
|
}
|
}
|
while (TREE_CODE (inner) == COMPONENT_REF
|
while (TREE_CODE (inner) == COMPONENT_REF
|
|| TREE_CODE (inner) == ARRAY_REF);
|
|| TREE_CODE (inner) == ARRAY_REF);
|
if (DECL_P (inner) && DECL_WEAK (inner))
|
if (DECL_P (inner) && DECL_WEAK (inner))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Otherwise, ARG already has the proper type for the return value. */
|
/* Otherwise, ARG already has the proper type for the return value. */
|
return arg;
|
return arg;
|
}
|
}
|
|
|
/* Fold a call to __builtin_classify_type. */
|
/* Fold a call to __builtin_classify_type. */
|
|
|
static tree
|
static tree
|
fold_builtin_classify_type (tree arglist)
|
fold_builtin_classify_type (tree arglist)
|
{
|
{
|
if (arglist == 0)
|
if (arglist == 0)
|
return build_int_cst (NULL_TREE, no_type_class);
|
return build_int_cst (NULL_TREE, no_type_class);
|
|
|
return build_int_cst (NULL_TREE,
|
return build_int_cst (NULL_TREE,
|
type_to_class (TREE_TYPE (TREE_VALUE (arglist))));
|
type_to_class (TREE_TYPE (TREE_VALUE (arglist))));
|
}
|
}
|
|
|
/* Fold a call to __builtin_strlen. */
|
/* Fold a call to __builtin_strlen. */
|
|
|
static tree
|
static tree
|
fold_builtin_strlen (tree arglist)
|
fold_builtin_strlen (tree arglist)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
else
|
else
|
{
|
{
|
tree len = c_strlen (TREE_VALUE (arglist), 0);
|
tree len = c_strlen (TREE_VALUE (arglist), 0);
|
|
|
if (len)
|
if (len)
|
{
|
{
|
/* Convert from the internal "sizetype" type to "size_t". */
|
/* Convert from the internal "sizetype" type to "size_t". */
|
if (size_type_node)
|
if (size_type_node)
|
len = fold_convert (size_type_node, len);
|
len = fold_convert (size_type_node, len);
|
return len;
|
return len;
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to __builtin_inf or __builtin_huge_val. */
|
/* Fold a call to __builtin_inf or __builtin_huge_val. */
|
|
|
static tree
|
static tree
|
fold_builtin_inf (tree type, int warn)
|
fold_builtin_inf (tree type, int warn)
|
{
|
{
|
REAL_VALUE_TYPE real;
|
REAL_VALUE_TYPE real;
|
|
|
/* __builtin_inff is intended to be usable to define INFINITY on all
|
/* __builtin_inff is intended to be usable to define INFINITY on all
|
targets. If an infinity is not available, INFINITY expands "to a
|
targets. If an infinity is not available, INFINITY expands "to a
|
positive constant of type float that overflows at translation
|
positive constant of type float that overflows at translation
|
time", footnote "In this case, using INFINITY will violate the
|
time", footnote "In this case, using INFINITY will violate the
|
constraint in 6.4.4 and thus require a diagnostic." (C99 7.12#4).
|
constraint in 6.4.4 and thus require a diagnostic." (C99 7.12#4).
|
Thus we pedwarn to ensure this constraint violation is
|
Thus we pedwarn to ensure this constraint violation is
|
diagnosed. */
|
diagnosed. */
|
if (!MODE_HAS_INFINITIES (TYPE_MODE (type)) && warn)
|
if (!MODE_HAS_INFINITIES (TYPE_MODE (type)) && warn)
|
pedwarn ("target format does not support infinity");
|
pedwarn ("target format does not support infinity");
|
|
|
real_inf (&real);
|
real_inf (&real);
|
return build_real (type, real);
|
return build_real (type, real);
|
}
|
}
|
|
|
/* Fold a call to __builtin_nan or __builtin_nans. */
|
/* Fold a call to __builtin_nan or __builtin_nans. */
|
|
|
static tree
|
static tree
|
fold_builtin_nan (tree arglist, tree type, int quiet)
|
fold_builtin_nan (tree arglist, tree type, int quiet)
|
{
|
{
|
REAL_VALUE_TYPE real;
|
REAL_VALUE_TYPE real;
|
const char *str;
|
const char *str;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
str = c_getstr (TREE_VALUE (arglist));
|
str = c_getstr (TREE_VALUE (arglist));
|
if (!str)
|
if (!str)
|
return 0;
|
return 0;
|
|
|
if (!real_nan (&real, str, quiet, TYPE_MODE (type)))
|
if (!real_nan (&real, str, quiet, TYPE_MODE (type)))
|
return 0;
|
return 0;
|
|
|
return build_real (type, real);
|
return build_real (type, real);
|
}
|
}
|
|
|
/* Return true if the floating point expression T has an integer value.
|
/* Return true if the floating point expression T has an integer value.
|
We also allow +Inf, -Inf and NaN to be considered integer values. */
|
We also allow +Inf, -Inf and NaN to be considered integer values. */
|
|
|
static bool
|
static bool
|
integer_valued_real_p (tree t)
|
integer_valued_real_p (tree t)
|
{
|
{
|
switch (TREE_CODE (t))
|
switch (TREE_CODE (t))
|
{
|
{
|
case FLOAT_EXPR:
|
case FLOAT_EXPR:
|
return true;
|
return true;
|
|
|
case ABS_EXPR:
|
case ABS_EXPR:
|
case SAVE_EXPR:
|
case SAVE_EXPR:
|
case NON_LVALUE_EXPR:
|
case NON_LVALUE_EXPR:
|
return integer_valued_real_p (TREE_OPERAND (t, 0));
|
return integer_valued_real_p (TREE_OPERAND (t, 0));
|
|
|
case COMPOUND_EXPR:
|
case COMPOUND_EXPR:
|
case MODIFY_EXPR:
|
case MODIFY_EXPR:
|
case BIND_EXPR:
|
case BIND_EXPR:
|
return integer_valued_real_p (TREE_OPERAND (t, 1));
|
return integer_valued_real_p (TREE_OPERAND (t, 1));
|
|
|
case PLUS_EXPR:
|
case PLUS_EXPR:
|
case MINUS_EXPR:
|
case MINUS_EXPR:
|
case MULT_EXPR:
|
case MULT_EXPR:
|
case MIN_EXPR:
|
case MIN_EXPR:
|
case MAX_EXPR:
|
case MAX_EXPR:
|
return integer_valued_real_p (TREE_OPERAND (t, 0))
|
return integer_valued_real_p (TREE_OPERAND (t, 0))
|
&& integer_valued_real_p (TREE_OPERAND (t, 1));
|
&& integer_valued_real_p (TREE_OPERAND (t, 1));
|
|
|
case COND_EXPR:
|
case COND_EXPR:
|
return integer_valued_real_p (TREE_OPERAND (t, 1))
|
return integer_valued_real_p (TREE_OPERAND (t, 1))
|
&& integer_valued_real_p (TREE_OPERAND (t, 2));
|
&& integer_valued_real_p (TREE_OPERAND (t, 2));
|
|
|
case REAL_CST:
|
case REAL_CST:
|
if (! TREE_CONSTANT_OVERFLOW (t))
|
if (! TREE_CONSTANT_OVERFLOW (t))
|
{
|
{
|
REAL_VALUE_TYPE c, cint;
|
REAL_VALUE_TYPE c, cint;
|
|
|
c = TREE_REAL_CST (t);
|
c = TREE_REAL_CST (t);
|
real_trunc (&cint, TYPE_MODE (TREE_TYPE (t)), &c);
|
real_trunc (&cint, TYPE_MODE (TREE_TYPE (t)), &c);
|
return real_identical (&c, &cint);
|
return real_identical (&c, &cint);
|
}
|
}
|
break;
|
break;
|
|
|
case NOP_EXPR:
|
case NOP_EXPR:
|
{
|
{
|
tree type = TREE_TYPE (TREE_OPERAND (t, 0));
|
tree type = TREE_TYPE (TREE_OPERAND (t, 0));
|
if (TREE_CODE (type) == INTEGER_TYPE)
|
if (TREE_CODE (type) == INTEGER_TYPE)
|
return true;
|
return true;
|
if (TREE_CODE (type) == REAL_TYPE)
|
if (TREE_CODE (type) == REAL_TYPE)
|
return integer_valued_real_p (TREE_OPERAND (t, 0));
|
return integer_valued_real_p (TREE_OPERAND (t, 0));
|
break;
|
break;
|
}
|
}
|
|
|
case CALL_EXPR:
|
case CALL_EXPR:
|
switch (builtin_mathfn_code (t))
|
switch (builtin_mathfn_code (t))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
return true;
|
return true;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
break;
|
break;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
return false;
|
return false;
|
}
|
}
|
|
|
/* EXP is assumed to be builtin call where truncation can be propagated
|
/* EXP is assumed to be builtin call where truncation can be propagated
|
across (for instance floor((double)f) == (double)floorf (f).
|
across (for instance floor((double)f) == (double)floorf (f).
|
Do the transformation. */
|
Do the transformation. */
|
|
|
static tree
|
static tree
|
fold_trunc_transparent_mathfn (tree fndecl, tree arglist)
|
fold_trunc_transparent_mathfn (tree fndecl, tree arglist)
|
{
|
{
|
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
|
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
/* Integer rounding functions are idempotent. */
|
/* Integer rounding functions are idempotent. */
|
if (fcode == builtin_mathfn_code (arg))
|
if (fcode == builtin_mathfn_code (arg))
|
return arg;
|
return arg;
|
|
|
/* If argument is already integer valued, and we don't need to worry
|
/* If argument is already integer valued, and we don't need to worry
|
about setting errno, there's no need to perform rounding. */
|
about setting errno, there's no need to perform rounding. */
|
if (! flag_errno_math && integer_valued_real_p (arg))
|
if (! flag_errno_math && integer_valued_real_p (arg))
|
return arg;
|
return arg;
|
|
|
if (optimize)
|
if (optimize)
|
{
|
{
|
tree arg0 = strip_float_extensions (arg);
|
tree arg0 = strip_float_extensions (arg);
|
tree ftype = TREE_TYPE (TREE_TYPE (fndecl));
|
tree ftype = TREE_TYPE (TREE_TYPE (fndecl));
|
tree newtype = TREE_TYPE (arg0);
|
tree newtype = TREE_TYPE (arg0);
|
tree decl;
|
tree decl;
|
|
|
if (TYPE_PRECISION (newtype) < TYPE_PRECISION (ftype)
|
if (TYPE_PRECISION (newtype) < TYPE_PRECISION (ftype)
|
&& (decl = mathfn_built_in (newtype, fcode)))
|
&& (decl = mathfn_built_in (newtype, fcode)))
|
{
|
{
|
arglist =
|
arglist =
|
build_tree_list (NULL_TREE, fold_convert (newtype, arg0));
|
build_tree_list (NULL_TREE, fold_convert (newtype, arg0));
|
return fold_convert (ftype,
|
return fold_convert (ftype,
|
build_function_call_expr (decl, arglist));
|
build_function_call_expr (decl, arglist));
|
}
|
}
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* EXP is assumed to be builtin call which can narrow the FP type of
|
/* EXP is assumed to be builtin call which can narrow the FP type of
|
the argument, for instance lround((double)f) -> lroundf (f). */
|
the argument, for instance lround((double)f) -> lroundf (f). */
|
|
|
static tree
|
static tree
|
fold_fixed_mathfn (tree fndecl, tree arglist)
|
fold_fixed_mathfn (tree fndecl, tree arglist)
|
{
|
{
|
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
|
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
|
|
/* If argument is already integer valued, and we don't need to worry
|
/* If argument is already integer valued, and we don't need to worry
|
about setting errno, there's no need to perform rounding. */
|
about setting errno, there's no need to perform rounding. */
|
if (! flag_errno_math && integer_valued_real_p (arg))
|
if (! flag_errno_math && integer_valued_real_p (arg))
|
return fold_build1 (FIX_TRUNC_EXPR, TREE_TYPE (TREE_TYPE (fndecl)), arg);
|
return fold_build1 (FIX_TRUNC_EXPR, TREE_TYPE (TREE_TYPE (fndecl)), arg);
|
|
|
if (optimize)
|
if (optimize)
|
{
|
{
|
tree ftype = TREE_TYPE (arg);
|
tree ftype = TREE_TYPE (arg);
|
tree arg0 = strip_float_extensions (arg);
|
tree arg0 = strip_float_extensions (arg);
|
tree newtype = TREE_TYPE (arg0);
|
tree newtype = TREE_TYPE (arg0);
|
tree decl;
|
tree decl;
|
|
|
if (TYPE_PRECISION (newtype) < TYPE_PRECISION (ftype)
|
if (TYPE_PRECISION (newtype) < TYPE_PRECISION (ftype)
|
&& (decl = mathfn_built_in (newtype, fcode)))
|
&& (decl = mathfn_built_in (newtype, fcode)))
|
{
|
{
|
arglist =
|
arglist =
|
build_tree_list (NULL_TREE, fold_convert (newtype, arg0));
|
build_tree_list (NULL_TREE, fold_convert (newtype, arg0));
|
return build_function_call_expr (decl, arglist);
|
return build_function_call_expr (decl, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Canonicalize llround (x) to lround (x) on LP64 targets where
|
/* Canonicalize llround (x) to lround (x) on LP64 targets where
|
sizeof (long long) == sizeof (long). */
|
sizeof (long long) == sizeof (long). */
|
if (TYPE_PRECISION (long_long_integer_type_node)
|
if (TYPE_PRECISION (long_long_integer_type_node)
|
== TYPE_PRECISION (long_integer_type_node))
|
== TYPE_PRECISION (long_integer_type_node))
|
{
|
{
|
tree newfn = NULL_TREE;
|
tree newfn = NULL_TREE;
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LCEIL);
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LCEIL);
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LFLOOR);
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LFLOOR);
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LLROUND):
|
CASE_FLT_FN (BUILT_IN_LLROUND):
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LROUND);
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LROUND);
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LRINT);
|
newfn = mathfn_built_in (TREE_TYPE (arg), BUILT_IN_LRINT);
|
break;
|
break;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
if (newfn)
|
if (newfn)
|
{
|
{
|
tree newcall = build_function_call_expr (newfn, arglist);
|
tree newcall = build_function_call_expr (newfn, arglist);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), newcall);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), newcall);
|
}
|
}
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Fold function call to builtin cabs, cabsf or cabsl. ARGLIST
|
/* Fold function call to builtin cabs, cabsf or cabsl. ARGLIST
|
is the argument list, TYPE is the return type and FNDECL is the
|
is the argument list, TYPE is the return type and FNDECL is the
|
original function DECL. Return NULL_TREE if no if no simplification
|
original function DECL. Return NULL_TREE if no if no simplification
|
can be made. */
|
can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_cabs (tree arglist, tree type, tree fndecl)
|
fold_builtin_cabs (tree arglist, tree type, tree fndecl)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (!arglist || TREE_CHAIN (arglist))
|
if (!arglist || TREE_CHAIN (arglist))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (arg)) != COMPLEX_TYPE
|
if (TREE_CODE (TREE_TYPE (arg)) != COMPLEX_TYPE
|
|| TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) != REAL_TYPE)
|
|| TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) != REAL_TYPE)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Evaluate cabs of a constant at compile-time. */
|
/* Evaluate cabs of a constant at compile-time. */
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& TREE_CODE (arg) == COMPLEX_CST
|
&& TREE_CODE (arg) == COMPLEX_CST
|
&& TREE_CODE (TREE_REALPART (arg)) == REAL_CST
|
&& TREE_CODE (TREE_REALPART (arg)) == REAL_CST
|
&& TREE_CODE (TREE_IMAGPART (arg)) == REAL_CST
|
&& TREE_CODE (TREE_IMAGPART (arg)) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (TREE_REALPART (arg))
|
&& ! TREE_CONSTANT_OVERFLOW (TREE_REALPART (arg))
|
&& ! TREE_CONSTANT_OVERFLOW (TREE_IMAGPART (arg)))
|
&& ! TREE_CONSTANT_OVERFLOW (TREE_IMAGPART (arg)))
|
{
|
{
|
REAL_VALUE_TYPE r, i;
|
REAL_VALUE_TYPE r, i;
|
|
|
r = TREE_REAL_CST (TREE_REALPART (arg));
|
r = TREE_REAL_CST (TREE_REALPART (arg));
|
i = TREE_REAL_CST (TREE_IMAGPART (arg));
|
i = TREE_REAL_CST (TREE_IMAGPART (arg));
|
|
|
real_arithmetic (&r, MULT_EXPR, &r, &r);
|
real_arithmetic (&r, MULT_EXPR, &r, &r);
|
real_arithmetic (&i, MULT_EXPR, &i, &i);
|
real_arithmetic (&i, MULT_EXPR, &i, &i);
|
real_arithmetic (&r, PLUS_EXPR, &r, &i);
|
real_arithmetic (&r, PLUS_EXPR, &r, &i);
|
if (real_sqrt (&r, TYPE_MODE (type), &r)
|
if (real_sqrt (&r, TYPE_MODE (type), &r)
|
|| ! flag_trapping_math)
|
|| ! flag_trapping_math)
|
return build_real (type, r);
|
return build_real (type, r);
|
}
|
}
|
|
|
/* If either part is zero, cabs is fabs of the other. */
|
/* If either part is zero, cabs is fabs of the other. */
|
if (TREE_CODE (arg) == COMPLEX_EXPR
|
if (TREE_CODE (arg) == COMPLEX_EXPR
|
&& real_zerop (TREE_OPERAND (arg, 0)))
|
&& real_zerop (TREE_OPERAND (arg, 0)))
|
return fold_build1 (ABS_EXPR, type, TREE_OPERAND (arg, 1));
|
return fold_build1 (ABS_EXPR, type, TREE_OPERAND (arg, 1));
|
if (TREE_CODE (arg) == COMPLEX_EXPR
|
if (TREE_CODE (arg) == COMPLEX_EXPR
|
&& real_zerop (TREE_OPERAND (arg, 1)))
|
&& real_zerop (TREE_OPERAND (arg, 1)))
|
return fold_build1 (ABS_EXPR, type, TREE_OPERAND (arg, 0));
|
return fold_build1 (ABS_EXPR, type, TREE_OPERAND (arg, 0));
|
|
|
/* Optimize cabs(-z) and cabs(conj(z)) as cabs(z). */
|
/* Optimize cabs(-z) and cabs(conj(z)) as cabs(z). */
|
if (TREE_CODE (arg) == NEGATE_EXPR
|
if (TREE_CODE (arg) == NEGATE_EXPR
|
|| TREE_CODE (arg) == CONJ_EXPR)
|
|| TREE_CODE (arg) == CONJ_EXPR)
|
{
|
{
|
tree arglist = build_tree_list (NULL_TREE, TREE_OPERAND (arg, 0));
|
tree arglist = build_tree_list (NULL_TREE, TREE_OPERAND (arg, 0));
|
return build_function_call_expr (fndecl, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
}
|
}
|
|
|
/* Don't do this when optimizing for size. */
|
/* Don't do this when optimizing for size. */
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& optimize && !optimize_size)
|
&& optimize && !optimize_size)
|
{
|
{
|
tree sqrtfn = mathfn_built_in (type, BUILT_IN_SQRT);
|
tree sqrtfn = mathfn_built_in (type, BUILT_IN_SQRT);
|
|
|
if (sqrtfn != NULL_TREE)
|
if (sqrtfn != NULL_TREE)
|
{
|
{
|
tree rpart, ipart, result, arglist;
|
tree rpart, ipart, result, arglist;
|
|
|
arg = builtin_save_expr (arg);
|
arg = builtin_save_expr (arg);
|
|
|
rpart = fold_build1 (REALPART_EXPR, type, arg);
|
rpart = fold_build1 (REALPART_EXPR, type, arg);
|
ipart = fold_build1 (IMAGPART_EXPR, type, arg);
|
ipart = fold_build1 (IMAGPART_EXPR, type, arg);
|
|
|
rpart = builtin_save_expr (rpart);
|
rpart = builtin_save_expr (rpart);
|
ipart = builtin_save_expr (ipart);
|
ipart = builtin_save_expr (ipart);
|
|
|
result = fold_build2 (PLUS_EXPR, type,
|
result = fold_build2 (PLUS_EXPR, type,
|
fold_build2 (MULT_EXPR, type,
|
fold_build2 (MULT_EXPR, type,
|
rpart, rpart),
|
rpart, rpart),
|
fold_build2 (MULT_EXPR, type,
|
fold_build2 (MULT_EXPR, type,
|
ipart, ipart));
|
ipart, ipart));
|
|
|
arglist = build_tree_list (NULL_TREE, result);
|
arglist = build_tree_list (NULL_TREE, result);
|
return build_function_call_expr (sqrtfn, arglist);
|
return build_function_call_expr (sqrtfn, arglist);
|
}
|
}
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold a builtin function call to sqrt, sqrtf, or sqrtl. Return
|
/* Fold a builtin function call to sqrt, sqrtf, or sqrtl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_sqrt (tree arglist, tree type)
|
fold_builtin_sqrt (tree arglist, tree type)
|
{
|
{
|
|
|
enum built_in_function fcode;
|
enum built_in_function fcode;
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize sqrt of constant value. */
|
/* Optimize sqrt of constant value. */
|
if (TREE_CODE (arg) == REAL_CST
|
if (TREE_CODE (arg) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg))
|
&& ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE r, x;
|
REAL_VALUE_TYPE r, x;
|
|
|
x = TREE_REAL_CST (arg);
|
x = TREE_REAL_CST (arg);
|
if (real_sqrt (&r, TYPE_MODE (type), &x)
|
if (real_sqrt (&r, TYPE_MODE (type), &x)
|
|| (!flag_trapping_math && !flag_errno_math))
|
|| (!flag_trapping_math && !flag_errno_math))
|
return build_real (type, r);
|
return build_real (type, r);
|
}
|
}
|
|
|
/* Optimize sqrt(expN(x)) = expN(x*0.5). */
|
/* Optimize sqrt(expN(x)) = expN(x*0.5). */
|
fcode = builtin_mathfn_code (arg);
|
fcode = builtin_mathfn_code (arg);
|
if (flag_unsafe_math_optimizations && BUILTIN_EXPONENT_P (fcode))
|
if (flag_unsafe_math_optimizations && BUILTIN_EXPONENT_P (fcode))
|
{
|
{
|
tree expfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
tree expfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
arg = fold_build2 (MULT_EXPR, type,
|
arg = fold_build2 (MULT_EXPR, type,
|
TREE_VALUE (TREE_OPERAND (arg, 1)),
|
TREE_VALUE (TREE_OPERAND (arg, 1)),
|
build_real (type, dconsthalf));
|
build_real (type, dconsthalf));
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
return build_function_call_expr (expfn, arglist);
|
return build_function_call_expr (expfn, arglist);
|
}
|
}
|
|
|
/* Optimize sqrt(Nroot(x)) -> pow(x,1/(2*N)). */
|
/* Optimize sqrt(Nroot(x)) -> pow(x,1/(2*N)). */
|
if (flag_unsafe_math_optimizations && BUILTIN_ROOT_P (fcode))
|
if (flag_unsafe_math_optimizations && BUILTIN_ROOT_P (fcode))
|
{
|
{
|
tree powfn = mathfn_built_in (type, BUILT_IN_POW);
|
tree powfn = mathfn_built_in (type, BUILT_IN_POW);
|
|
|
if (powfn)
|
if (powfn)
|
{
|
{
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree tree_root;
|
tree tree_root;
|
/* The inner root was either sqrt or cbrt. */
|
/* The inner root was either sqrt or cbrt. */
|
REAL_VALUE_TYPE dconstroot =
|
REAL_VALUE_TYPE dconstroot =
|
BUILTIN_SQRT_P (fcode) ? dconsthalf : dconstthird;
|
BUILTIN_SQRT_P (fcode) ? dconsthalf : dconstthird;
|
|
|
/* Adjust for the outer root. */
|
/* Adjust for the outer root. */
|
SET_REAL_EXP (&dconstroot, REAL_EXP (&dconstroot) - 1);
|
SET_REAL_EXP (&dconstroot, REAL_EXP (&dconstroot) - 1);
|
dconstroot = real_value_truncate (TYPE_MODE (type), dconstroot);
|
dconstroot = real_value_truncate (TYPE_MODE (type), dconstroot);
|
tree_root = build_real (type, dconstroot);
|
tree_root = build_real (type, dconstroot);
|
arglist = tree_cons (NULL_TREE, arg0,
|
arglist = tree_cons (NULL_TREE, arg0,
|
build_tree_list (NULL_TREE, tree_root));
|
build_tree_list (NULL_TREE, tree_root));
|
return build_function_call_expr (powfn, arglist);
|
return build_function_call_expr (powfn, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Optimize sqrt(pow(x,y)) = pow(|x|,y*0.5). */
|
/* Optimize sqrt(pow(x,y)) = pow(|x|,y*0.5). */
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& (fcode == BUILT_IN_POW
|
&& (fcode == BUILT_IN_POW
|
|| fcode == BUILT_IN_POWF
|
|| fcode == BUILT_IN_POWF
|
|| fcode == BUILT_IN_POWL))
|
|| fcode == BUILT_IN_POWL))
|
{
|
{
|
tree powfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
tree powfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg1 = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg, 1)));
|
tree arg1 = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg, 1)));
|
tree narg1;
|
tree narg1;
|
if (!tree_expr_nonnegative_p (arg0))
|
if (!tree_expr_nonnegative_p (arg0))
|
arg0 = build1 (ABS_EXPR, type, arg0);
|
arg0 = build1 (ABS_EXPR, type, arg0);
|
narg1 = fold_build2 (MULT_EXPR, type, arg1,
|
narg1 = fold_build2 (MULT_EXPR, type, arg1,
|
build_real (type, dconsthalf));
|
build_real (type, dconsthalf));
|
arglist = tree_cons (NULL_TREE, arg0,
|
arglist = tree_cons (NULL_TREE, arg0,
|
build_tree_list (NULL_TREE, narg1));
|
build_tree_list (NULL_TREE, narg1));
|
return build_function_call_expr (powfn, arglist);
|
return build_function_call_expr (powfn, arglist);
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold a builtin function call to cbrt, cbrtf, or cbrtl. Return
|
/* Fold a builtin function call to cbrt, cbrtf, or cbrtl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
static tree
|
static tree
|
fold_builtin_cbrt (tree arglist, tree type)
|
fold_builtin_cbrt (tree arglist, tree type)
|
{
|
{
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
const enum built_in_function fcode = builtin_mathfn_code (arg);
|
const enum built_in_function fcode = builtin_mathfn_code (arg);
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize cbrt of constant value. */
|
/* Optimize cbrt of constant value. */
|
if (real_zerop (arg) || real_onep (arg) || real_minus_onep (arg))
|
if (real_zerop (arg) || real_onep (arg) || real_minus_onep (arg))
|
return arg;
|
return arg;
|
|
|
if (flag_unsafe_math_optimizations)
|
if (flag_unsafe_math_optimizations)
|
{
|
{
|
/* Optimize cbrt(expN(x)) -> expN(x/3). */
|
/* Optimize cbrt(expN(x)) -> expN(x/3). */
|
if (BUILTIN_EXPONENT_P (fcode))
|
if (BUILTIN_EXPONENT_P (fcode))
|
{
|
{
|
tree expfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
tree expfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
const REAL_VALUE_TYPE third_trunc =
|
const REAL_VALUE_TYPE third_trunc =
|
real_value_truncate (TYPE_MODE (type), dconstthird);
|
real_value_truncate (TYPE_MODE (type), dconstthird);
|
arg = fold_build2 (MULT_EXPR, type,
|
arg = fold_build2 (MULT_EXPR, type,
|
TREE_VALUE (TREE_OPERAND (arg, 1)),
|
TREE_VALUE (TREE_OPERAND (arg, 1)),
|
build_real (type, third_trunc));
|
build_real (type, third_trunc));
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
return build_function_call_expr (expfn, arglist);
|
return build_function_call_expr (expfn, arglist);
|
}
|
}
|
|
|
/* Optimize cbrt(sqrt(x)) -> pow(x,1/6). */
|
/* Optimize cbrt(sqrt(x)) -> pow(x,1/6). */
|
if (BUILTIN_SQRT_P (fcode))
|
if (BUILTIN_SQRT_P (fcode))
|
{
|
{
|
tree powfn = mathfn_built_in (type, BUILT_IN_POW);
|
tree powfn = mathfn_built_in (type, BUILT_IN_POW);
|
|
|
if (powfn)
|
if (powfn)
|
{
|
{
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree tree_root;
|
tree tree_root;
|
REAL_VALUE_TYPE dconstroot = dconstthird;
|
REAL_VALUE_TYPE dconstroot = dconstthird;
|
|
|
SET_REAL_EXP (&dconstroot, REAL_EXP (&dconstroot) - 1);
|
SET_REAL_EXP (&dconstroot, REAL_EXP (&dconstroot) - 1);
|
dconstroot = real_value_truncate (TYPE_MODE (type), dconstroot);
|
dconstroot = real_value_truncate (TYPE_MODE (type), dconstroot);
|
tree_root = build_real (type, dconstroot);
|
tree_root = build_real (type, dconstroot);
|
arglist = tree_cons (NULL_TREE, arg0,
|
arglist = tree_cons (NULL_TREE, arg0,
|
build_tree_list (NULL_TREE, tree_root));
|
build_tree_list (NULL_TREE, tree_root));
|
return build_function_call_expr (powfn, arglist);
|
return build_function_call_expr (powfn, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Optimize cbrt(cbrt(x)) -> pow(x,1/9) iff x is nonnegative. */
|
/* Optimize cbrt(cbrt(x)) -> pow(x,1/9) iff x is nonnegative. */
|
if (BUILTIN_CBRT_P (fcode))
|
if (BUILTIN_CBRT_P (fcode))
|
{
|
{
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg0 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
if (tree_expr_nonnegative_p (arg0))
|
if (tree_expr_nonnegative_p (arg0))
|
{
|
{
|
tree powfn = mathfn_built_in (type, BUILT_IN_POW);
|
tree powfn = mathfn_built_in (type, BUILT_IN_POW);
|
|
|
if (powfn)
|
if (powfn)
|
{
|
{
|
tree tree_root;
|
tree tree_root;
|
REAL_VALUE_TYPE dconstroot;
|
REAL_VALUE_TYPE dconstroot;
|
|
|
real_arithmetic (&dconstroot, MULT_EXPR, &dconstthird, &dconstthird);
|
real_arithmetic (&dconstroot, MULT_EXPR, &dconstthird, &dconstthird);
|
dconstroot = real_value_truncate (TYPE_MODE (type), dconstroot);
|
dconstroot = real_value_truncate (TYPE_MODE (type), dconstroot);
|
tree_root = build_real (type, dconstroot);
|
tree_root = build_real (type, dconstroot);
|
arglist = tree_cons (NULL_TREE, arg0,
|
arglist = tree_cons (NULL_TREE, arg0,
|
build_tree_list (NULL_TREE, tree_root));
|
build_tree_list (NULL_TREE, tree_root));
|
return build_function_call_expr (powfn, arglist);
|
return build_function_call_expr (powfn, arglist);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Optimize cbrt(pow(x,y)) -> pow(x,y/3) iff x is nonnegative. */
|
/* Optimize cbrt(pow(x,y)) -> pow(x,y/3) iff x is nonnegative. */
|
if (fcode == BUILT_IN_POW || fcode == BUILT_IN_POWF
|
if (fcode == BUILT_IN_POW || fcode == BUILT_IN_POWF
|
|| fcode == BUILT_IN_POWL)
|
|| fcode == BUILT_IN_POWL)
|
{
|
{
|
tree arg00 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg00 = TREE_VALUE (TREE_OPERAND (arg, 1));
|
tree arg01 = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg, 1)));
|
tree arg01 = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg, 1)));
|
if (tree_expr_nonnegative_p (arg00))
|
if (tree_expr_nonnegative_p (arg00))
|
{
|
{
|
tree powfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
tree powfn = TREE_OPERAND (TREE_OPERAND (arg, 0), 0);
|
const REAL_VALUE_TYPE dconstroot
|
const REAL_VALUE_TYPE dconstroot
|
= real_value_truncate (TYPE_MODE (type), dconstthird);
|
= real_value_truncate (TYPE_MODE (type), dconstthird);
|
tree narg01 = fold_build2 (MULT_EXPR, type, arg01,
|
tree narg01 = fold_build2 (MULT_EXPR, type, arg01,
|
build_real (type, dconstroot));
|
build_real (type, dconstroot));
|
arglist = tree_cons (NULL_TREE, arg00,
|
arglist = tree_cons (NULL_TREE, arg00,
|
build_tree_list (NULL_TREE, narg01));
|
build_tree_list (NULL_TREE, narg01));
|
return build_function_call_expr (powfn, arglist);
|
return build_function_call_expr (powfn, arglist);
|
}
|
}
|
}
|
}
|
}
|
}
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold function call to builtin sin, sinf, or sinl. Return
|
/* Fold function call to builtin sin, sinf, or sinl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
static tree
|
static tree
|
fold_builtin_sin (tree arglist)
|
fold_builtin_sin (tree arglist)
|
{
|
{
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize sin (0.0) = 0.0. */
|
/* Optimize sin (0.0) = 0.0. */
|
if (real_zerop (arg))
|
if (real_zerop (arg))
|
return arg;
|
return arg;
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold function call to builtin cos, cosf, or cosl. Return
|
/* Fold function call to builtin cos, cosf, or cosl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
static tree
|
static tree
|
fold_builtin_cos (tree arglist, tree type, tree fndecl)
|
fold_builtin_cos (tree arglist, tree type, tree fndecl)
|
{
|
{
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize cos (0.0) = 1.0. */
|
/* Optimize cos (0.0) = 1.0. */
|
if (real_zerop (arg))
|
if (real_zerop (arg))
|
return build_real (type, dconst1);
|
return build_real (type, dconst1);
|
|
|
/* Optimize cos(-x) into cos (x). */
|
/* Optimize cos(-x) into cos (x). */
|
if (TREE_CODE (arg) == NEGATE_EXPR)
|
if (TREE_CODE (arg) == NEGATE_EXPR)
|
{
|
{
|
tree args = build_tree_list (NULL_TREE,
|
tree args = build_tree_list (NULL_TREE,
|
TREE_OPERAND (arg, 0));
|
TREE_OPERAND (arg, 0));
|
return build_function_call_expr (fndecl, args);
|
return build_function_call_expr (fndecl, args);
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold function call to builtin tan, tanf, or tanl. Return
|
/* Fold function call to builtin tan, tanf, or tanl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
static tree
|
static tree
|
fold_builtin_tan (tree arglist)
|
fold_builtin_tan (tree arglist)
|
{
|
{
|
enum built_in_function fcode;
|
enum built_in_function fcode;
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize tan(0.0) = 0.0. */
|
/* Optimize tan(0.0) = 0.0. */
|
if (real_zerop (arg))
|
if (real_zerop (arg))
|
return arg;
|
return arg;
|
|
|
/* Optimize tan(atan(x)) = x. */
|
/* Optimize tan(atan(x)) = x. */
|
fcode = builtin_mathfn_code (arg);
|
fcode = builtin_mathfn_code (arg);
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& (fcode == BUILT_IN_ATAN
|
&& (fcode == BUILT_IN_ATAN
|
|| fcode == BUILT_IN_ATANF
|
|| fcode == BUILT_IN_ATANF
|
|| fcode == BUILT_IN_ATANL))
|
|| fcode == BUILT_IN_ATANL))
|
return TREE_VALUE (TREE_OPERAND (arg, 1));
|
return TREE_VALUE (TREE_OPERAND (arg, 1));
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold function call to builtin atan, atanf, or atanl. Return
|
/* Fold function call to builtin atan, atanf, or atanl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_atan (tree arglist, tree type)
|
fold_builtin_atan (tree arglist, tree type)
|
{
|
{
|
|
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize atan(0.0) = 0.0. */
|
/* Optimize atan(0.0) = 0.0. */
|
if (real_zerop (arg))
|
if (real_zerop (arg))
|
return arg;
|
return arg;
|
|
|
/* Optimize atan(1.0) = pi/4. */
|
/* Optimize atan(1.0) = pi/4. */
|
if (real_onep (arg))
|
if (real_onep (arg))
|
{
|
{
|
REAL_VALUE_TYPE cst;
|
REAL_VALUE_TYPE cst;
|
|
|
real_convert (&cst, TYPE_MODE (type), &dconstpi);
|
real_convert (&cst, TYPE_MODE (type), &dconstpi);
|
SET_REAL_EXP (&cst, REAL_EXP (&cst) - 2);
|
SET_REAL_EXP (&cst, REAL_EXP (&cst) - 2);
|
return build_real (type, cst);
|
return build_real (type, cst);
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold function call to builtin trunc, truncf or truncl. Return
|
/* Fold function call to builtin trunc, truncf or truncl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_trunc (tree fndecl, tree arglist)
|
fold_builtin_trunc (tree fndecl, tree arglist)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Optimize trunc of constant value. */
|
/* Optimize trunc of constant value. */
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE r, x;
|
REAL_VALUE_TYPE r, x;
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
|
|
x = TREE_REAL_CST (arg);
|
x = TREE_REAL_CST (arg);
|
real_trunc (&r, TYPE_MODE (type), &x);
|
real_trunc (&r, TYPE_MODE (type), &x);
|
return build_real (type, r);
|
return build_real (type, r);
|
}
|
}
|
|
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
}
|
}
|
|
|
/* Fold function call to builtin floor, floorf or floorl. Return
|
/* Fold function call to builtin floor, floorf or floorl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_floor (tree fndecl, tree arglist)
|
fold_builtin_floor (tree fndecl, tree arglist)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Optimize floor of constant value. */
|
/* Optimize floor of constant value. */
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE x;
|
REAL_VALUE_TYPE x;
|
|
|
x = TREE_REAL_CST (arg);
|
x = TREE_REAL_CST (arg);
|
if (! REAL_VALUE_ISNAN (x) || ! flag_errno_math)
|
if (! REAL_VALUE_ISNAN (x) || ! flag_errno_math)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
REAL_VALUE_TYPE r;
|
REAL_VALUE_TYPE r;
|
|
|
real_floor (&r, TYPE_MODE (type), &x);
|
real_floor (&r, TYPE_MODE (type), &x);
|
return build_real (type, r);
|
return build_real (type, r);
|
}
|
}
|
}
|
}
|
|
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
}
|
}
|
|
|
/* Fold function call to builtin ceil, ceilf or ceill. Return
|
/* Fold function call to builtin ceil, ceilf or ceill. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_ceil (tree fndecl, tree arglist)
|
fold_builtin_ceil (tree fndecl, tree arglist)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Optimize ceil of constant value. */
|
/* Optimize ceil of constant value. */
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE x;
|
REAL_VALUE_TYPE x;
|
|
|
x = TREE_REAL_CST (arg);
|
x = TREE_REAL_CST (arg);
|
if (! REAL_VALUE_ISNAN (x) || ! flag_errno_math)
|
if (! REAL_VALUE_ISNAN (x) || ! flag_errno_math)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
REAL_VALUE_TYPE r;
|
REAL_VALUE_TYPE r;
|
|
|
real_ceil (&r, TYPE_MODE (type), &x);
|
real_ceil (&r, TYPE_MODE (type), &x);
|
return build_real (type, r);
|
return build_real (type, r);
|
}
|
}
|
}
|
}
|
|
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
}
|
}
|
|
|
/* Fold function call to builtin round, roundf or roundl. Return
|
/* Fold function call to builtin round, roundf or roundl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_round (tree fndecl, tree arglist)
|
fold_builtin_round (tree fndecl, tree arglist)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Optimize round of constant value. */
|
/* Optimize round of constant value. */
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE x;
|
REAL_VALUE_TYPE x;
|
|
|
x = TREE_REAL_CST (arg);
|
x = TREE_REAL_CST (arg);
|
if (! REAL_VALUE_ISNAN (x) || ! flag_errno_math)
|
if (! REAL_VALUE_ISNAN (x) || ! flag_errno_math)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
REAL_VALUE_TYPE r;
|
REAL_VALUE_TYPE r;
|
|
|
real_round (&r, TYPE_MODE (type), &x);
|
real_round (&r, TYPE_MODE (type), &x);
|
return build_real (type, r);
|
return build_real (type, r);
|
}
|
}
|
}
|
}
|
|
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
}
|
}
|
|
|
/* Fold function call to builtin lround, lroundf or lroundl (or the
|
/* Fold function call to builtin lround, lroundf or lroundl (or the
|
corresponding long long versions) and other rounding functions.
|
corresponding long long versions) and other rounding functions.
|
Return NULL_TREE if no simplification can be made. */
|
Return NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_int_roundingfn (tree fndecl, tree arglist)
|
fold_builtin_int_roundingfn (tree fndecl, tree arglist)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
/* Optimize lround of constant value. */
|
/* Optimize lround of constant value. */
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
if (TREE_CODE (arg) == REAL_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
const REAL_VALUE_TYPE x = TREE_REAL_CST (arg);
|
const REAL_VALUE_TYPE x = TREE_REAL_CST (arg);
|
|
|
if (! REAL_VALUE_ISNAN (x) && ! REAL_VALUE_ISINF (x))
|
if (! REAL_VALUE_ISNAN (x) && ! REAL_VALUE_ISINF (x))
|
{
|
{
|
tree itype = TREE_TYPE (TREE_TYPE (fndecl));
|
tree itype = TREE_TYPE (TREE_TYPE (fndecl));
|
tree ftype = TREE_TYPE (arg), result;
|
tree ftype = TREE_TYPE (arg), result;
|
HOST_WIDE_INT hi, lo;
|
HOST_WIDE_INT hi, lo;
|
REAL_VALUE_TYPE r;
|
REAL_VALUE_TYPE r;
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
real_floor (&r, TYPE_MODE (ftype), &x);
|
real_floor (&r, TYPE_MODE (ftype), &x);
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
real_ceil (&r, TYPE_MODE (ftype), &x);
|
real_ceil (&r, TYPE_MODE (ftype), &x);
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_LROUND):
|
CASE_FLT_FN (BUILT_IN_LROUND):
|
CASE_FLT_FN (BUILT_IN_LLROUND):
|
CASE_FLT_FN (BUILT_IN_LLROUND):
|
real_round (&r, TYPE_MODE (ftype), &x);
|
real_round (&r, TYPE_MODE (ftype), &x);
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
REAL_VALUE_TO_INT (&lo, &hi, r);
|
REAL_VALUE_TO_INT (&lo, &hi, r);
|
result = build_int_cst_wide (NULL_TREE, lo, hi);
|
result = build_int_cst_wide (NULL_TREE, lo, hi);
|
if (int_fits_type_p (result, itype))
|
if (int_fits_type_p (result, itype))
|
return fold_convert (itype, result);
|
return fold_convert (itype, result);
|
}
|
}
|
}
|
}
|
|
|
return fold_fixed_mathfn (fndecl, arglist);
|
return fold_fixed_mathfn (fndecl, arglist);
|
}
|
}
|
|
|
/* Fold function call to builtin ffs, clz, ctz, popcount and parity
|
/* Fold function call to builtin ffs, clz, ctz, popcount and parity
|
and their long and long long variants (i.e. ffsl and ffsll).
|
and their long and long long variants (i.e. ffsl and ffsll).
|
Return NULL_TREE if no simplification can be made. */
|
Return NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_bitop (tree fndecl, tree arglist)
|
fold_builtin_bitop (tree fndecl, tree arglist)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize for constant argument. */
|
/* Optimize for constant argument. */
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (TREE_CODE (arg) == INTEGER_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
if (TREE_CODE (arg) == INTEGER_CST && ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
HOST_WIDE_INT hi, width, result;
|
HOST_WIDE_INT hi, width, result;
|
unsigned HOST_WIDE_INT lo;
|
unsigned HOST_WIDE_INT lo;
|
tree type;
|
tree type;
|
|
|
type = TREE_TYPE (arg);
|
type = TREE_TYPE (arg);
|
width = TYPE_PRECISION (type);
|
width = TYPE_PRECISION (type);
|
lo = TREE_INT_CST_LOW (arg);
|
lo = TREE_INT_CST_LOW (arg);
|
|
|
/* Clear all the bits that are beyond the type's precision. */
|
/* Clear all the bits that are beyond the type's precision. */
|
if (width > HOST_BITS_PER_WIDE_INT)
|
if (width > HOST_BITS_PER_WIDE_INT)
|
{
|
{
|
hi = TREE_INT_CST_HIGH (arg);
|
hi = TREE_INT_CST_HIGH (arg);
|
if (width < 2 * HOST_BITS_PER_WIDE_INT)
|
if (width < 2 * HOST_BITS_PER_WIDE_INT)
|
hi &= ~((HOST_WIDE_INT) (-1) >> (width - HOST_BITS_PER_WIDE_INT));
|
hi &= ~((HOST_WIDE_INT) (-1) >> (width - HOST_BITS_PER_WIDE_INT));
|
}
|
}
|
else
|
else
|
{
|
{
|
hi = 0;
|
hi = 0;
|
if (width < HOST_BITS_PER_WIDE_INT)
|
if (width < HOST_BITS_PER_WIDE_INT)
|
lo &= ~((unsigned HOST_WIDE_INT) (-1) << width);
|
lo &= ~((unsigned HOST_WIDE_INT) (-1) << width);
|
}
|
}
|
|
|
switch (DECL_FUNCTION_CODE (fndecl))
|
switch (DECL_FUNCTION_CODE (fndecl))
|
{
|
{
|
CASE_INT_FN (BUILT_IN_FFS):
|
CASE_INT_FN (BUILT_IN_FFS):
|
if (lo != 0)
|
if (lo != 0)
|
result = exact_log2 (lo & -lo) + 1;
|
result = exact_log2 (lo & -lo) + 1;
|
else if (hi != 0)
|
else if (hi != 0)
|
result = HOST_BITS_PER_WIDE_INT + exact_log2 (hi & -hi) + 1;
|
result = HOST_BITS_PER_WIDE_INT + exact_log2 (hi & -hi) + 1;
|
else
|
else
|
result = 0;
|
result = 0;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_CLZ):
|
CASE_INT_FN (BUILT_IN_CLZ):
|
if (hi != 0)
|
if (hi != 0)
|
result = width - floor_log2 (hi) - 1 - HOST_BITS_PER_WIDE_INT;
|
result = width - floor_log2 (hi) - 1 - HOST_BITS_PER_WIDE_INT;
|
else if (lo != 0)
|
else if (lo != 0)
|
result = width - floor_log2 (lo) - 1;
|
result = width - floor_log2 (lo) - 1;
|
else if (! CLZ_DEFINED_VALUE_AT_ZERO (TYPE_MODE (type), result))
|
else if (! CLZ_DEFINED_VALUE_AT_ZERO (TYPE_MODE (type), result))
|
result = width;
|
result = width;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_CTZ):
|
CASE_INT_FN (BUILT_IN_CTZ):
|
if (lo != 0)
|
if (lo != 0)
|
result = exact_log2 (lo & -lo);
|
result = exact_log2 (lo & -lo);
|
else if (hi != 0)
|
else if (hi != 0)
|
result = HOST_BITS_PER_WIDE_INT + exact_log2 (hi & -hi);
|
result = HOST_BITS_PER_WIDE_INT + exact_log2 (hi & -hi);
|
else if (! CTZ_DEFINED_VALUE_AT_ZERO (TYPE_MODE (type), result))
|
else if (! CTZ_DEFINED_VALUE_AT_ZERO (TYPE_MODE (type), result))
|
result = width;
|
result = width;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_POPCOUNT):
|
CASE_INT_FN (BUILT_IN_POPCOUNT):
|
result = 0;
|
result = 0;
|
while (lo)
|
while (lo)
|
result++, lo &= lo - 1;
|
result++, lo &= lo - 1;
|
while (hi)
|
while (hi)
|
result++, hi &= hi - 1;
|
result++, hi &= hi - 1;
|
break;
|
break;
|
|
|
CASE_INT_FN (BUILT_IN_PARITY):
|
CASE_INT_FN (BUILT_IN_PARITY):
|
result = 0;
|
result = 0;
|
while (lo)
|
while (lo)
|
result++, lo &= lo - 1;
|
result++, lo &= lo - 1;
|
while (hi)
|
while (hi)
|
result++, hi &= hi - 1;
|
result++, hi &= hi - 1;
|
result &= 1;
|
result &= 1;
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), result);
|
return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), result);
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Return true if EXPR is the real constant contained in VALUE. */
|
/* Return true if EXPR is the real constant contained in VALUE. */
|
|
|
static bool
|
static bool
|
real_dconstp (tree expr, const REAL_VALUE_TYPE *value)
|
real_dconstp (tree expr, const REAL_VALUE_TYPE *value)
|
{
|
{
|
STRIP_NOPS (expr);
|
STRIP_NOPS (expr);
|
|
|
return ((TREE_CODE (expr) == REAL_CST
|
return ((TREE_CODE (expr) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (expr)
|
&& ! TREE_CONSTANT_OVERFLOW (expr)
|
&& REAL_VALUES_EQUAL (TREE_REAL_CST (expr), *value))
|
&& REAL_VALUES_EQUAL (TREE_REAL_CST (expr), *value))
|
|| (TREE_CODE (expr) == COMPLEX_CST
|
|| (TREE_CODE (expr) == COMPLEX_CST
|
&& real_dconstp (TREE_REALPART (expr), value)
|
&& real_dconstp (TREE_REALPART (expr), value)
|
&& real_zerop (TREE_IMAGPART (expr))));
|
&& real_zerop (TREE_IMAGPART (expr))));
|
}
|
}
|
|
|
/* A subroutine of fold_builtin to fold the various logarithmic
|
/* A subroutine of fold_builtin to fold the various logarithmic
|
functions. EXP is the CALL_EXPR of a call to a builtin logN
|
functions. EXP is the CALL_EXPR of a call to a builtin logN
|
function. VALUE is the base of the logN function. */
|
function. VALUE is the base of the logN function. */
|
|
|
static tree
|
static tree
|
fold_builtin_logarithm (tree fndecl, tree arglist,
|
fold_builtin_logarithm (tree fndecl, tree arglist,
|
const REAL_VALUE_TYPE *value)
|
const REAL_VALUE_TYPE *value)
|
{
|
{
|
if (validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
const enum built_in_function fcode = builtin_mathfn_code (arg);
|
const enum built_in_function fcode = builtin_mathfn_code (arg);
|
|
|
/* Optimize logN(1.0) = 0.0. */
|
/* Optimize logN(1.0) = 0.0. */
|
if (real_onep (arg))
|
if (real_onep (arg))
|
return build_real (type, dconst0);
|
return build_real (type, dconst0);
|
|
|
/* Optimize logN(N) = 1.0. If N can't be truncated to MODE
|
/* Optimize logN(N) = 1.0. If N can't be truncated to MODE
|
exactly, then only do this if flag_unsafe_math_optimizations. */
|
exactly, then only do this if flag_unsafe_math_optimizations. */
|
if (exact_real_truncate (TYPE_MODE (type), value)
|
if (exact_real_truncate (TYPE_MODE (type), value)
|
|| flag_unsafe_math_optimizations)
|
|| flag_unsafe_math_optimizations)
|
{
|
{
|
const REAL_VALUE_TYPE value_truncate =
|
const REAL_VALUE_TYPE value_truncate =
|
real_value_truncate (TYPE_MODE (type), *value);
|
real_value_truncate (TYPE_MODE (type), *value);
|
if (real_dconstp (arg, &value_truncate))
|
if (real_dconstp (arg, &value_truncate))
|
return build_real (type, dconst1);
|
return build_real (type, dconst1);
|
}
|
}
|
|
|
/* Special case, optimize logN(expN(x)) = x. */
|
/* Special case, optimize logN(expN(x)) = x. */
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& ((value == &dconste
|
&& ((value == &dconste
|
&& (fcode == BUILT_IN_EXP
|
&& (fcode == BUILT_IN_EXP
|
|| fcode == BUILT_IN_EXPF
|
|| fcode == BUILT_IN_EXPF
|
|| fcode == BUILT_IN_EXPL))
|
|| fcode == BUILT_IN_EXPL))
|
|| (value == &dconst2
|
|| (value == &dconst2
|
&& (fcode == BUILT_IN_EXP2
|
&& (fcode == BUILT_IN_EXP2
|
|| fcode == BUILT_IN_EXP2F
|
|| fcode == BUILT_IN_EXP2F
|
|| fcode == BUILT_IN_EXP2L))
|
|| fcode == BUILT_IN_EXP2L))
|
|| (value == &dconst10 && (BUILTIN_EXP10_P (fcode)))))
|
|| (value == &dconst10 && (BUILTIN_EXP10_P (fcode)))))
|
return fold_convert (type, TREE_VALUE (TREE_OPERAND (arg, 1)));
|
return fold_convert (type, TREE_VALUE (TREE_OPERAND (arg, 1)));
|
|
|
/* Optimize logN(func()) for various exponential functions. We
|
/* Optimize logN(func()) for various exponential functions. We
|
want to determine the value "x" and the power "exponent" in
|
want to determine the value "x" and the power "exponent" in
|
order to transform logN(x**exponent) into exponent*logN(x). */
|
order to transform logN(x**exponent) into exponent*logN(x). */
|
if (flag_unsafe_math_optimizations)
|
if (flag_unsafe_math_optimizations)
|
{
|
{
|
tree exponent = 0, x = 0;
|
tree exponent = 0, x = 0;
|
|
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
CASE_FLT_FN (BUILT_IN_EXP):
|
CASE_FLT_FN (BUILT_IN_EXP):
|
/* Prepare to do logN(exp(exponent) -> exponent*logN(e). */
|
/* Prepare to do logN(exp(exponent) -> exponent*logN(e). */
|
x = build_real (type,
|
x = build_real (type,
|
real_value_truncate (TYPE_MODE (type), dconste));
|
real_value_truncate (TYPE_MODE (type), dconste));
|
exponent = TREE_VALUE (TREE_OPERAND (arg, 1));
|
exponent = TREE_VALUE (TREE_OPERAND (arg, 1));
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
/* Prepare to do logN(exp2(exponent) -> exponent*logN(2). */
|
/* Prepare to do logN(exp2(exponent) -> exponent*logN(2). */
|
x = build_real (type, dconst2);
|
x = build_real (type, dconst2);
|
exponent = TREE_VALUE (TREE_OPERAND (arg, 1));
|
exponent = TREE_VALUE (TREE_OPERAND (arg, 1));
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
/* Prepare to do logN(exp10(exponent) -> exponent*logN(10). */
|
/* Prepare to do logN(exp10(exponent) -> exponent*logN(10). */
|
x = build_real (type, dconst10);
|
x = build_real (type, dconst10);
|
exponent = TREE_VALUE (TREE_OPERAND (arg, 1));
|
exponent = TREE_VALUE (TREE_OPERAND (arg, 1));
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
/* Prepare to do logN(sqrt(x) -> 0.5*logN(x). */
|
/* Prepare to do logN(sqrt(x) -> 0.5*logN(x). */
|
x = TREE_VALUE (TREE_OPERAND (arg, 1));
|
x = TREE_VALUE (TREE_OPERAND (arg, 1));
|
exponent = build_real (type, dconsthalf);
|
exponent = build_real (type, dconsthalf);
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_CBRT):
|
CASE_FLT_FN (BUILT_IN_CBRT):
|
/* Prepare to do logN(cbrt(x) -> (1/3)*logN(x). */
|
/* Prepare to do logN(cbrt(x) -> (1/3)*logN(x). */
|
x = TREE_VALUE (TREE_OPERAND (arg, 1));
|
x = TREE_VALUE (TREE_OPERAND (arg, 1));
|
exponent = build_real (type, real_value_truncate (TYPE_MODE (type),
|
exponent = build_real (type, real_value_truncate (TYPE_MODE (type),
|
dconstthird));
|
dconstthird));
|
break;
|
break;
|
CASE_FLT_FN (BUILT_IN_POW):
|
CASE_FLT_FN (BUILT_IN_POW):
|
/* Prepare to do logN(pow(x,exponent) -> exponent*logN(x). */
|
/* Prepare to do logN(pow(x,exponent) -> exponent*logN(x). */
|
x = TREE_VALUE (TREE_OPERAND (arg, 1));
|
x = TREE_VALUE (TREE_OPERAND (arg, 1));
|
exponent = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg, 1)));
|
exponent = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg, 1)));
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
/* Now perform the optimization. */
|
/* Now perform the optimization. */
|
if (x && exponent)
|
if (x && exponent)
|
{
|
{
|
tree logfn;
|
tree logfn;
|
arglist = build_tree_list (NULL_TREE, x);
|
arglist = build_tree_list (NULL_TREE, x);
|
logfn = build_function_call_expr (fndecl, arglist);
|
logfn = build_function_call_expr (fndecl, arglist);
|
return fold_build2 (MULT_EXPR, type, exponent, logfn);
|
return fold_build2 (MULT_EXPR, type, exponent, logfn);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Fold a builtin function call to pow, powf, or powl. Return
|
/* Fold a builtin function call to pow, powf, or powl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
static tree
|
static tree
|
fold_builtin_pow (tree fndecl, tree arglist, tree type)
|
fold_builtin_pow (tree fndecl, tree arglist, tree type)
|
{
|
{
|
tree arg0 = TREE_VALUE (arglist);
|
tree arg0 = TREE_VALUE (arglist);
|
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize pow(1.0,y) = 1.0. */
|
/* Optimize pow(1.0,y) = 1.0. */
|
if (real_onep (arg0))
|
if (real_onep (arg0))
|
return omit_one_operand (type, build_real (type, dconst1), arg1);
|
return omit_one_operand (type, build_real (type, dconst1), arg1);
|
|
|
if (TREE_CODE (arg1) == REAL_CST
|
if (TREE_CODE (arg1) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg1))
|
&& ! TREE_CONSTANT_OVERFLOW (arg1))
|
{
|
{
|
REAL_VALUE_TYPE cint;
|
REAL_VALUE_TYPE cint;
|
REAL_VALUE_TYPE c;
|
REAL_VALUE_TYPE c;
|
HOST_WIDE_INT n;
|
HOST_WIDE_INT n;
|
|
|
c = TREE_REAL_CST (arg1);
|
c = TREE_REAL_CST (arg1);
|
|
|
/* Optimize pow(x,0.0) = 1.0. */
|
/* Optimize pow(x,0.0) = 1.0. */
|
if (REAL_VALUES_EQUAL (c, dconst0))
|
if (REAL_VALUES_EQUAL (c, dconst0))
|
return omit_one_operand (type, build_real (type, dconst1),
|
return omit_one_operand (type, build_real (type, dconst1),
|
arg0);
|
arg0);
|
|
|
/* Optimize pow(x,1.0) = x. */
|
/* Optimize pow(x,1.0) = x. */
|
if (REAL_VALUES_EQUAL (c, dconst1))
|
if (REAL_VALUES_EQUAL (c, dconst1))
|
return arg0;
|
return arg0;
|
|
|
/* Optimize pow(x,-1.0) = 1.0/x. */
|
/* Optimize pow(x,-1.0) = 1.0/x. */
|
if (REAL_VALUES_EQUAL (c, dconstm1))
|
if (REAL_VALUES_EQUAL (c, dconstm1))
|
return fold_build2 (RDIV_EXPR, type,
|
return fold_build2 (RDIV_EXPR, type,
|
build_real (type, dconst1), arg0);
|
build_real (type, dconst1), arg0);
|
|
|
/* Optimize pow(x,0.5) = sqrt(x). */
|
/* Optimize pow(x,0.5) = sqrt(x). */
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& REAL_VALUES_EQUAL (c, dconsthalf))
|
&& REAL_VALUES_EQUAL (c, dconsthalf))
|
{
|
{
|
tree sqrtfn = mathfn_built_in (type, BUILT_IN_SQRT);
|
tree sqrtfn = mathfn_built_in (type, BUILT_IN_SQRT);
|
|
|
if (sqrtfn != NULL_TREE)
|
if (sqrtfn != NULL_TREE)
|
{
|
{
|
tree arglist = build_tree_list (NULL_TREE, arg0);
|
tree arglist = build_tree_list (NULL_TREE, arg0);
|
return build_function_call_expr (sqrtfn, arglist);
|
return build_function_call_expr (sqrtfn, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Check for an integer exponent. */
|
/* Check for an integer exponent. */
|
n = real_to_integer (&c);
|
n = real_to_integer (&c);
|
real_from_integer (&cint, VOIDmode, n, n < 0 ? -1 : 0, 0);
|
real_from_integer (&cint, VOIDmode, n, n < 0 ? -1 : 0, 0);
|
if (real_identical (&c, &cint))
|
if (real_identical (&c, &cint))
|
{
|
{
|
/* Attempt to evaluate pow at compile-time. */
|
/* Attempt to evaluate pow at compile-time. */
|
if (TREE_CODE (arg0) == REAL_CST
|
if (TREE_CODE (arg0) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg0))
|
&& ! TREE_CONSTANT_OVERFLOW (arg0))
|
{
|
{
|
REAL_VALUE_TYPE x;
|
REAL_VALUE_TYPE x;
|
bool inexact;
|
bool inexact;
|
|
|
x = TREE_REAL_CST (arg0);
|
x = TREE_REAL_CST (arg0);
|
inexact = real_powi (&x, TYPE_MODE (type), &x, n);
|
inexact = real_powi (&x, TYPE_MODE (type), &x, n);
|
if (flag_unsafe_math_optimizations || !inexact)
|
if (flag_unsafe_math_optimizations || !inexact)
|
return build_real (type, x);
|
return build_real (type, x);
|
}
|
}
|
|
|
/* Strip sign ops from even integer powers. */
|
/* Strip sign ops from even integer powers. */
|
if ((n & 1) == 0 && flag_unsafe_math_optimizations)
|
if ((n & 1) == 0 && flag_unsafe_math_optimizations)
|
{
|
{
|
tree narg0 = fold_strip_sign_ops (arg0);
|
tree narg0 = fold_strip_sign_ops (arg0);
|
if (narg0)
|
if (narg0)
|
{
|
{
|
arglist = build_tree_list (NULL_TREE, arg1);
|
arglist = build_tree_list (NULL_TREE, arg1);
|
arglist = tree_cons (NULL_TREE, narg0, arglist);
|
arglist = tree_cons (NULL_TREE, narg0, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (flag_unsafe_math_optimizations)
|
if (flag_unsafe_math_optimizations)
|
{
|
{
|
const enum built_in_function fcode = builtin_mathfn_code (arg0);
|
const enum built_in_function fcode = builtin_mathfn_code (arg0);
|
|
|
/* Optimize pow(expN(x),y) = expN(x*y). */
|
/* Optimize pow(expN(x),y) = expN(x*y). */
|
if (BUILTIN_EXPONENT_P (fcode))
|
if (BUILTIN_EXPONENT_P (fcode))
|
{
|
{
|
tree expfn = TREE_OPERAND (TREE_OPERAND (arg0, 0), 0);
|
tree expfn = TREE_OPERAND (TREE_OPERAND (arg0, 0), 0);
|
tree arg = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
tree arg = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
arg = fold_build2 (MULT_EXPR, type, arg, arg1);
|
arg = fold_build2 (MULT_EXPR, type, arg, arg1);
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
return build_function_call_expr (expfn, arglist);
|
return build_function_call_expr (expfn, arglist);
|
}
|
}
|
|
|
/* Optimize pow(sqrt(x),y) = pow(x,y*0.5). */
|
/* Optimize pow(sqrt(x),y) = pow(x,y*0.5). */
|
if (BUILTIN_SQRT_P (fcode))
|
if (BUILTIN_SQRT_P (fcode))
|
{
|
{
|
tree narg0 = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
tree narg0 = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
tree narg1 = fold_build2 (MULT_EXPR, type, arg1,
|
tree narg1 = fold_build2 (MULT_EXPR, type, arg1,
|
build_real (type, dconsthalf));
|
build_real (type, dconsthalf));
|
|
|
arglist = tree_cons (NULL_TREE, narg0,
|
arglist = tree_cons (NULL_TREE, narg0,
|
build_tree_list (NULL_TREE, narg1));
|
build_tree_list (NULL_TREE, narg1));
|
return build_function_call_expr (fndecl, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
}
|
}
|
|
|
/* Optimize pow(cbrt(x),y) = pow(x,y/3) iff x is nonnegative. */
|
/* Optimize pow(cbrt(x),y) = pow(x,y/3) iff x is nonnegative. */
|
if (BUILTIN_CBRT_P (fcode))
|
if (BUILTIN_CBRT_P (fcode))
|
{
|
{
|
tree arg = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
tree arg = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
if (tree_expr_nonnegative_p (arg))
|
if (tree_expr_nonnegative_p (arg))
|
{
|
{
|
const REAL_VALUE_TYPE dconstroot
|
const REAL_VALUE_TYPE dconstroot
|
= real_value_truncate (TYPE_MODE (type), dconstthird);
|
= real_value_truncate (TYPE_MODE (type), dconstthird);
|
tree narg1 = fold_build2 (MULT_EXPR, type, arg1,
|
tree narg1 = fold_build2 (MULT_EXPR, type, arg1,
|
build_real (type, dconstroot));
|
build_real (type, dconstroot));
|
arglist = tree_cons (NULL_TREE, arg,
|
arglist = tree_cons (NULL_TREE, arg,
|
build_tree_list (NULL_TREE, narg1));
|
build_tree_list (NULL_TREE, narg1));
|
return build_function_call_expr (fndecl, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Optimize pow(pow(x,y),z) = pow(x,y*z). */
|
/* Optimize pow(pow(x,y),z) = pow(x,y*z). */
|
if (fcode == BUILT_IN_POW || fcode == BUILT_IN_POWF
|
if (fcode == BUILT_IN_POW || fcode == BUILT_IN_POWF
|
|| fcode == BUILT_IN_POWL)
|
|| fcode == BUILT_IN_POWL)
|
{
|
{
|
tree arg00 = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
tree arg00 = TREE_VALUE (TREE_OPERAND (arg0, 1));
|
tree arg01 = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg0, 1)));
|
tree arg01 = TREE_VALUE (TREE_CHAIN (TREE_OPERAND (arg0, 1)));
|
tree narg1 = fold_build2 (MULT_EXPR, type, arg01, arg1);
|
tree narg1 = fold_build2 (MULT_EXPR, type, arg01, arg1);
|
arglist = tree_cons (NULL_TREE, arg00,
|
arglist = tree_cons (NULL_TREE, arg00,
|
build_tree_list (NULL_TREE, narg1));
|
build_tree_list (NULL_TREE, narg1));
|
return build_function_call_expr (fndecl, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
}
|
}
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold a builtin function call to powi, powif, or powil. Return
|
/* Fold a builtin function call to powi, powif, or powil. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
static tree
|
static tree
|
fold_builtin_powi (tree fndecl ATTRIBUTE_UNUSED, tree arglist, tree type)
|
fold_builtin_powi (tree fndecl ATTRIBUTE_UNUSED, tree arglist, tree type)
|
{
|
{
|
tree arg0 = TREE_VALUE (arglist);
|
tree arg0 = TREE_VALUE (arglist);
|
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Optimize pow(1.0,y) = 1.0. */
|
/* Optimize pow(1.0,y) = 1.0. */
|
if (real_onep (arg0))
|
if (real_onep (arg0))
|
return omit_one_operand (type, build_real (type, dconst1), arg1);
|
return omit_one_operand (type, build_real (type, dconst1), arg1);
|
|
|
if (host_integerp (arg1, 0))
|
if (host_integerp (arg1, 0))
|
{
|
{
|
HOST_WIDE_INT c = TREE_INT_CST_LOW (arg1);
|
HOST_WIDE_INT c = TREE_INT_CST_LOW (arg1);
|
|
|
/* Evaluate powi at compile-time. */
|
/* Evaluate powi at compile-time. */
|
if (TREE_CODE (arg0) == REAL_CST
|
if (TREE_CODE (arg0) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg0))
|
&& ! TREE_CONSTANT_OVERFLOW (arg0))
|
{
|
{
|
REAL_VALUE_TYPE x;
|
REAL_VALUE_TYPE x;
|
x = TREE_REAL_CST (arg0);
|
x = TREE_REAL_CST (arg0);
|
real_powi (&x, TYPE_MODE (type), &x, c);
|
real_powi (&x, TYPE_MODE (type), &x, c);
|
return build_real (type, x);
|
return build_real (type, x);
|
}
|
}
|
|
|
/* Optimize pow(x,0) = 1.0. */
|
/* Optimize pow(x,0) = 1.0. */
|
if (c == 0)
|
if (c == 0)
|
return omit_one_operand (type, build_real (type, dconst1),
|
return omit_one_operand (type, build_real (type, dconst1),
|
arg0);
|
arg0);
|
|
|
/* Optimize pow(x,1) = x. */
|
/* Optimize pow(x,1) = x. */
|
if (c == 1)
|
if (c == 1)
|
return arg0;
|
return arg0;
|
|
|
/* Optimize pow(x,-1) = 1.0/x. */
|
/* Optimize pow(x,-1) = 1.0/x. */
|
if (c == -1)
|
if (c == -1)
|
return fold_build2 (RDIV_EXPR, type,
|
return fold_build2 (RDIV_EXPR, type,
|
build_real (type, dconst1), arg0);
|
build_real (type, dconst1), arg0);
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* A subroutine of fold_builtin to fold the various exponent
|
/* A subroutine of fold_builtin to fold the various exponent
|
functions. EXP is the CALL_EXPR of a call to a builtin function.
|
functions. EXP is the CALL_EXPR of a call to a builtin function.
|
VALUE is the value which will be raised to a power. */
|
VALUE is the value which will be raised to a power. */
|
|
|
static tree
|
static tree
|
fold_builtin_exponent (tree fndecl, tree arglist,
|
fold_builtin_exponent (tree fndecl, tree arglist,
|
const REAL_VALUE_TYPE *value)
|
const REAL_VALUE_TYPE *value)
|
{
|
{
|
if (validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
/* Optimize exp*(0.0) = 1.0. */
|
/* Optimize exp*(0.0) = 1.0. */
|
if (real_zerop (arg))
|
if (real_zerop (arg))
|
return build_real (type, dconst1);
|
return build_real (type, dconst1);
|
|
|
/* Optimize expN(1.0) = N. */
|
/* Optimize expN(1.0) = N. */
|
if (real_onep (arg))
|
if (real_onep (arg))
|
{
|
{
|
REAL_VALUE_TYPE cst;
|
REAL_VALUE_TYPE cst;
|
|
|
real_convert (&cst, TYPE_MODE (type), value);
|
real_convert (&cst, TYPE_MODE (type), value);
|
return build_real (type, cst);
|
return build_real (type, cst);
|
}
|
}
|
|
|
/* Attempt to evaluate expN(integer) at compile-time. */
|
/* Attempt to evaluate expN(integer) at compile-time. */
|
if (flag_unsafe_math_optimizations
|
if (flag_unsafe_math_optimizations
|
&& TREE_CODE (arg) == REAL_CST
|
&& TREE_CODE (arg) == REAL_CST
|
&& ! TREE_CONSTANT_OVERFLOW (arg))
|
&& ! TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE cint;
|
REAL_VALUE_TYPE cint;
|
REAL_VALUE_TYPE c;
|
REAL_VALUE_TYPE c;
|
HOST_WIDE_INT n;
|
HOST_WIDE_INT n;
|
|
|
c = TREE_REAL_CST (arg);
|
c = TREE_REAL_CST (arg);
|
n = real_to_integer (&c);
|
n = real_to_integer (&c);
|
real_from_integer (&cint, VOIDmode, n,
|
real_from_integer (&cint, VOIDmode, n,
|
n < 0 ? -1 : 0, 0);
|
n < 0 ? -1 : 0, 0);
|
if (real_identical (&c, &cint))
|
if (real_identical (&c, &cint))
|
{
|
{
|
REAL_VALUE_TYPE x;
|
REAL_VALUE_TYPE x;
|
|
|
real_powi (&x, TYPE_MODE (type), value, n);
|
real_powi (&x, TYPE_MODE (type), value, n);
|
return build_real (type, x);
|
return build_real (type, x);
|
}
|
}
|
}
|
}
|
|
|
/* Optimize expN(logN(x)) = x. */
|
/* Optimize expN(logN(x)) = x. */
|
if (flag_unsafe_math_optimizations)
|
if (flag_unsafe_math_optimizations)
|
{
|
{
|
const enum built_in_function fcode = builtin_mathfn_code (arg);
|
const enum built_in_function fcode = builtin_mathfn_code (arg);
|
|
|
if ((value == &dconste
|
if ((value == &dconste
|
&& (fcode == BUILT_IN_LOG
|
&& (fcode == BUILT_IN_LOG
|
|| fcode == BUILT_IN_LOGF
|
|| fcode == BUILT_IN_LOGF
|
|| fcode == BUILT_IN_LOGL))
|
|| fcode == BUILT_IN_LOGL))
|
|| (value == &dconst2
|
|| (value == &dconst2
|
&& (fcode == BUILT_IN_LOG2
|
&& (fcode == BUILT_IN_LOG2
|
|| fcode == BUILT_IN_LOG2F
|
|| fcode == BUILT_IN_LOG2F
|
|| fcode == BUILT_IN_LOG2L))
|
|| fcode == BUILT_IN_LOG2L))
|
|| (value == &dconst10
|
|| (value == &dconst10
|
&& (fcode == BUILT_IN_LOG10
|
&& (fcode == BUILT_IN_LOG10
|
|| fcode == BUILT_IN_LOG10F
|
|| fcode == BUILT_IN_LOG10F
|
|| fcode == BUILT_IN_LOG10L)))
|
|| fcode == BUILT_IN_LOG10L)))
|
return fold_convert (type, TREE_VALUE (TREE_OPERAND (arg, 1)));
|
return fold_convert (type, TREE_VALUE (TREE_OPERAND (arg, 1)));
|
}
|
}
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Return true if VAR is a VAR_DECL or a component thereof. */
|
/* Return true if VAR is a VAR_DECL or a component thereof. */
|
|
|
static bool
|
static bool
|
var_decl_component_p (tree var)
|
var_decl_component_p (tree var)
|
{
|
{
|
tree inner = var;
|
tree inner = var;
|
while (handled_component_p (inner))
|
while (handled_component_p (inner))
|
inner = TREE_OPERAND (inner, 0);
|
inner = TREE_OPERAND (inner, 0);
|
return SSA_VAR_P (inner);
|
return SSA_VAR_P (inner);
|
}
|
}
|
|
|
/* Fold function call to builtin memset. Return
|
/* Fold function call to builtin memset. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_memset (tree arglist, tree type, bool ignore)
|
fold_builtin_memset (tree arglist, tree type, bool ignore)
|
{
|
{
|
tree dest, c, len, var, ret;
|
tree dest, c, len, var, ret;
|
unsigned HOST_WIDE_INT length, cval;
|
unsigned HOST_WIDE_INT length, cval;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
c = TREE_VALUE (TREE_CHAIN (arglist));
|
c = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
if (! host_integerp (len, 1))
|
if (! host_integerp (len, 1))
|
return 0;
|
return 0;
|
|
|
/* If the LEN parameter is zero, return DEST. */
|
/* If the LEN parameter is zero, return DEST. */
|
if (integer_zerop (len))
|
if (integer_zerop (len))
|
return omit_one_operand (type, dest, c);
|
return omit_one_operand (type, dest, c);
|
|
|
if (! host_integerp (c, 1) || TREE_SIDE_EFFECTS (dest))
|
if (! host_integerp (c, 1) || TREE_SIDE_EFFECTS (dest))
|
return 0;
|
return 0;
|
|
|
var = dest;
|
var = dest;
|
STRIP_NOPS (var);
|
STRIP_NOPS (var);
|
if (TREE_CODE (var) != ADDR_EXPR)
|
if (TREE_CODE (var) != ADDR_EXPR)
|
return 0;
|
return 0;
|
|
|
var = TREE_OPERAND (var, 0);
|
var = TREE_OPERAND (var, 0);
|
if (TREE_THIS_VOLATILE (var))
|
if (TREE_THIS_VOLATILE (var))
|
return 0;
|
return 0;
|
|
|
if (!INTEGRAL_TYPE_P (TREE_TYPE (var))
|
if (!INTEGRAL_TYPE_P (TREE_TYPE (var))
|
&& !POINTER_TYPE_P (TREE_TYPE (var)))
|
&& !POINTER_TYPE_P (TREE_TYPE (var)))
|
return 0;
|
return 0;
|
|
|
if (! var_decl_component_p (var))
|
if (! var_decl_component_p (var))
|
return 0;
|
return 0;
|
|
|
length = tree_low_cst (len, 1);
|
length = tree_low_cst (len, 1);
|
if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (var))) != length
|
if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (var))) != length
|
|| get_pointer_alignment (dest, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
|
|| get_pointer_alignment (dest, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
|
< (int) length)
|
< (int) length)
|
return 0;
|
return 0;
|
|
|
if (length > HOST_BITS_PER_WIDE_INT / BITS_PER_UNIT)
|
if (length > HOST_BITS_PER_WIDE_INT / BITS_PER_UNIT)
|
return 0;
|
return 0;
|
|
|
if (integer_zerop (c))
|
if (integer_zerop (c))
|
cval = 0;
|
cval = 0;
|
else
|
else
|
{
|
{
|
if (CHAR_BIT != 8 || BITS_PER_UNIT != 8 || HOST_BITS_PER_WIDE_INT > 64)
|
if (CHAR_BIT != 8 || BITS_PER_UNIT != 8 || HOST_BITS_PER_WIDE_INT > 64)
|
return 0;
|
return 0;
|
|
|
cval = tree_low_cst (c, 1);
|
cval = tree_low_cst (c, 1);
|
cval &= 0xff;
|
cval &= 0xff;
|
cval |= cval << 8;
|
cval |= cval << 8;
|
cval |= cval << 16;
|
cval |= cval << 16;
|
cval |= (cval << 31) << 1;
|
cval |= (cval << 31) << 1;
|
}
|
}
|
|
|
ret = build_int_cst_type (TREE_TYPE (var), cval);
|
ret = build_int_cst_type (TREE_TYPE (var), cval);
|
ret = build2 (MODIFY_EXPR, TREE_TYPE (var), var, ret);
|
ret = build2 (MODIFY_EXPR, TREE_TYPE (var), var, ret);
|
if (ignore)
|
if (ignore)
|
return ret;
|
return ret;
|
|
|
return omit_one_operand (type, dest, ret);
|
return omit_one_operand (type, dest, ret);
|
}
|
}
|
|
|
/* Fold function call to builtin memset. Return
|
/* Fold function call to builtin memset. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_bzero (tree arglist, bool ignore)
|
fold_builtin_bzero (tree arglist, bool ignore)
|
{
|
{
|
tree dest, size, newarglist;
|
tree dest, size, newarglist;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
if (!ignore)
|
if (!ignore)
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
size = TREE_VALUE (TREE_CHAIN (arglist));
|
size = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
/* New argument list transforming bzero(ptr x, int y) to
|
/* New argument list transforming bzero(ptr x, int y) to
|
memset(ptr x, int 0, size_t y). This is done this way
|
memset(ptr x, int 0, size_t y). This is done this way
|
so that if it isn't expanded inline, we fallback to
|
so that if it isn't expanded inline, we fallback to
|
calling bzero instead of memset. */
|
calling bzero instead of memset. */
|
|
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = tree_cons (NULL_TREE, integer_zero_node, newarglist);
|
newarglist = tree_cons (NULL_TREE, integer_zero_node, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
return fold_builtin_memset (newarglist, void_type_node, ignore);
|
return fold_builtin_memset (newarglist, void_type_node, ignore);
|
}
|
}
|
|
|
/* Fold function call to builtin mem{{,p}cpy,move}. Return
|
/* Fold function call to builtin mem{{,p}cpy,move}. Return
|
NULL_TREE if no simplification can be made.
|
NULL_TREE if no simplification can be made.
|
If ENDP is 0, return DEST (like memcpy).
|
If ENDP is 0, return DEST (like memcpy).
|
If ENDP is 1, return DEST+LEN (like mempcpy).
|
If ENDP is 1, return DEST+LEN (like mempcpy).
|
If ENDP is 2, return DEST+LEN-1 (like stpcpy).
|
If ENDP is 2, return DEST+LEN-1 (like stpcpy).
|
If ENDP is 3, return DEST, additionally *SRC and *DEST may overlap
|
If ENDP is 3, return DEST, additionally *SRC and *DEST may overlap
|
(memmove). */
|
(memmove). */
|
|
|
static tree
|
static tree
|
fold_builtin_memory_op (tree arglist, tree type, bool ignore, int endp)
|
fold_builtin_memory_op (tree arglist, tree type, bool ignore, int endp)
|
{
|
{
|
tree dest, src, len, destvar, srcvar, expr;
|
tree dest, src, len, destvar, srcvar, expr;
|
unsigned HOST_WIDE_INT length;
|
unsigned HOST_WIDE_INT length;
|
|
|
if (! validate_arglist (arglist,
|
if (! validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* If the LEN parameter is zero, return DEST. */
|
/* If the LEN parameter is zero, return DEST. */
|
if (integer_zerop (len))
|
if (integer_zerop (len))
|
return omit_one_operand (type, dest, src);
|
return omit_one_operand (type, dest, src);
|
|
|
/* If SRC and DEST are the same (and not volatile), return
|
/* If SRC and DEST are the same (and not volatile), return
|
DEST{,+LEN,+LEN-1}. */
|
DEST{,+LEN,+LEN-1}. */
|
if (operand_equal_p (src, dest, 0))
|
if (operand_equal_p (src, dest, 0))
|
expr = len;
|
expr = len;
|
else
|
else
|
{
|
{
|
if (! host_integerp (len, 1))
|
if (! host_integerp (len, 1))
|
return 0;
|
return 0;
|
|
|
if (TREE_SIDE_EFFECTS (dest) || TREE_SIDE_EFFECTS (src))
|
if (TREE_SIDE_EFFECTS (dest) || TREE_SIDE_EFFECTS (src))
|
return 0;
|
return 0;
|
|
|
destvar = dest;
|
destvar = dest;
|
STRIP_NOPS (destvar);
|
STRIP_NOPS (destvar);
|
if (TREE_CODE (destvar) != ADDR_EXPR)
|
if (TREE_CODE (destvar) != ADDR_EXPR)
|
return 0;
|
return 0;
|
|
|
destvar = TREE_OPERAND (destvar, 0);
|
destvar = TREE_OPERAND (destvar, 0);
|
if (TREE_THIS_VOLATILE (destvar))
|
if (TREE_THIS_VOLATILE (destvar))
|
return 0;
|
return 0;
|
|
|
if (!INTEGRAL_TYPE_P (TREE_TYPE (destvar))
|
if (!INTEGRAL_TYPE_P (TREE_TYPE (destvar))
|
&& !POINTER_TYPE_P (TREE_TYPE (destvar))
|
&& !POINTER_TYPE_P (TREE_TYPE (destvar))
|
&& !SCALAR_FLOAT_TYPE_P (TREE_TYPE (destvar)))
|
&& !SCALAR_FLOAT_TYPE_P (TREE_TYPE (destvar)))
|
return 0;
|
return 0;
|
|
|
if (! var_decl_component_p (destvar))
|
if (! var_decl_component_p (destvar))
|
return 0;
|
return 0;
|
|
|
srcvar = src;
|
srcvar = src;
|
STRIP_NOPS (srcvar);
|
STRIP_NOPS (srcvar);
|
if (TREE_CODE (srcvar) != ADDR_EXPR)
|
if (TREE_CODE (srcvar) != ADDR_EXPR)
|
return 0;
|
return 0;
|
|
|
srcvar = TREE_OPERAND (srcvar, 0);
|
srcvar = TREE_OPERAND (srcvar, 0);
|
if (TREE_THIS_VOLATILE (srcvar))
|
if (TREE_THIS_VOLATILE (srcvar))
|
return 0;
|
return 0;
|
|
|
if (!INTEGRAL_TYPE_P (TREE_TYPE (srcvar))
|
if (!INTEGRAL_TYPE_P (TREE_TYPE (srcvar))
|
&& !POINTER_TYPE_P (TREE_TYPE (srcvar))
|
&& !POINTER_TYPE_P (TREE_TYPE (srcvar))
|
&& !SCALAR_FLOAT_TYPE_P (TREE_TYPE (srcvar)))
|
&& !SCALAR_FLOAT_TYPE_P (TREE_TYPE (srcvar)))
|
return 0;
|
return 0;
|
|
|
if (! var_decl_component_p (srcvar))
|
if (! var_decl_component_p (srcvar))
|
return 0;
|
return 0;
|
|
|
length = tree_low_cst (len, 1);
|
length = tree_low_cst (len, 1);
|
if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (destvar))) != length
|
if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (destvar))) != length
|
|| get_pointer_alignment (dest, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
|
|| get_pointer_alignment (dest, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
|
< (int) length
|
< (int) length
|
|| GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (srcvar))) != length
|
|| GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (srcvar))) != length
|
|| get_pointer_alignment (src, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
|
|| get_pointer_alignment (src, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
|
< (int) length)
|
< (int) length)
|
return 0;
|
return 0;
|
|
|
if ((INTEGRAL_TYPE_P (TREE_TYPE (srcvar))
|
if ((INTEGRAL_TYPE_P (TREE_TYPE (srcvar))
|
|| POINTER_TYPE_P (TREE_TYPE (srcvar)))
|
|| POINTER_TYPE_P (TREE_TYPE (srcvar)))
|
&& (INTEGRAL_TYPE_P (TREE_TYPE (destvar))
|
&& (INTEGRAL_TYPE_P (TREE_TYPE (destvar))
|
|| POINTER_TYPE_P (TREE_TYPE (destvar))))
|
|| POINTER_TYPE_P (TREE_TYPE (destvar))))
|
expr = fold_convert (TREE_TYPE (destvar), srcvar);
|
expr = fold_convert (TREE_TYPE (destvar), srcvar);
|
else
|
else
|
expr = fold_build1 (VIEW_CONVERT_EXPR, TREE_TYPE (destvar), srcvar);
|
expr = fold_build1 (VIEW_CONVERT_EXPR, TREE_TYPE (destvar), srcvar);
|
expr = build2 (MODIFY_EXPR, TREE_TYPE (destvar), destvar, expr);
|
expr = build2 (MODIFY_EXPR, TREE_TYPE (destvar), destvar, expr);
|
}
|
}
|
|
|
if (ignore)
|
if (ignore)
|
return expr;
|
return expr;
|
|
|
if (endp == 0 || endp == 3)
|
if (endp == 0 || endp == 3)
|
return omit_one_operand (type, dest, expr);
|
return omit_one_operand (type, dest, expr);
|
|
|
if (expr == len)
|
if (expr == len)
|
expr = 0;
|
expr = 0;
|
|
|
if (endp == 2)
|
if (endp == 2)
|
len = fold_build2 (MINUS_EXPR, TREE_TYPE (len), len,
|
len = fold_build2 (MINUS_EXPR, TREE_TYPE (len), len,
|
ssize_int (1));
|
ssize_int (1));
|
|
|
len = fold_convert (TREE_TYPE (dest), len);
|
len = fold_convert (TREE_TYPE (dest), len);
|
dest = fold_build2 (PLUS_EXPR, TREE_TYPE (dest), dest, len);
|
dest = fold_build2 (PLUS_EXPR, TREE_TYPE (dest), dest, len);
|
dest = fold_convert (type, dest);
|
dest = fold_convert (type, dest);
|
if (expr)
|
if (expr)
|
dest = omit_one_operand (type, dest, expr);
|
dest = omit_one_operand (type, dest, expr);
|
return dest;
|
return dest;
|
}
|
}
|
|
|
/* Fold function call to builtin bcopy. Return NULL_TREE if no
|
/* Fold function call to builtin bcopy. Return NULL_TREE if no
|
simplification can be made. */
|
simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_bcopy (tree arglist, bool ignore)
|
fold_builtin_bcopy (tree arglist, bool ignore)
|
{
|
{
|
tree src, dest, size, newarglist;
|
tree src, dest, size, newarglist;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
if (! ignore)
|
if (! ignore)
|
return 0;
|
return 0;
|
|
|
src = TREE_VALUE (arglist);
|
src = TREE_VALUE (arglist);
|
dest = TREE_VALUE (TREE_CHAIN (arglist));
|
dest = TREE_VALUE (TREE_CHAIN (arglist));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* New argument list transforming bcopy(ptr x, ptr y, int z) to
|
/* New argument list transforming bcopy(ptr x, ptr y, int z) to
|
memmove(ptr y, ptr x, size_t z). This is done this way
|
memmove(ptr y, ptr x, size_t z). This is done this way
|
so that if it isn't expanded inline, we fallback to
|
so that if it isn't expanded inline, we fallback to
|
calling bcopy instead of memmove. */
|
calling bcopy instead of memmove. */
|
|
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = build_tree_list (NULL_TREE, fold_convert (sizetype, size));
|
newarglist = tree_cons (NULL_TREE, src, newarglist);
|
newarglist = tree_cons (NULL_TREE, src, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
newarglist = tree_cons (NULL_TREE, dest, newarglist);
|
|
|
return fold_builtin_memory_op (newarglist, void_type_node, true, /*endp=*/3);
|
return fold_builtin_memory_op (newarglist, void_type_node, true, /*endp=*/3);
|
}
|
}
|
|
|
/* Fold function call to builtin strcpy. If LEN is not NULL, it represents
|
/* Fold function call to builtin strcpy. If LEN is not NULL, it represents
|
the length of the string to be copied. Return NULL_TREE if no
|
the length of the string to be copied. Return NULL_TREE if no
|
simplification can be made. */
|
simplification can be made. */
|
|
|
tree
|
tree
|
fold_builtin_strcpy (tree fndecl, tree arglist, tree len)
|
fold_builtin_strcpy (tree fndecl, tree arglist, tree len)
|
{
|
{
|
tree dest, src, fn;
|
tree dest, src, fn;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
/* If SRC and DEST are the same (and not volatile), return DEST. */
|
/* If SRC and DEST are the same (and not volatile), return DEST. */
|
if (operand_equal_p (src, dest, 0))
|
if (operand_equal_p (src, dest, 0))
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), dest);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), dest);
|
|
|
if (optimize_size)
|
if (optimize_size)
|
return 0;
|
return 0;
|
|
|
fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
if (!len)
|
if (!len)
|
{
|
{
|
len = c_strlen (src, 1);
|
len = c_strlen (src, 1);
|
if (! len || TREE_SIDE_EFFECTS (len))
|
if (! len || TREE_SIDE_EFFECTS (len))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
len = size_binop (PLUS_EXPR, len, ssize_int (1));
|
len = size_binop (PLUS_EXPR, len, ssize_int (1));
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)),
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)),
|
build_function_call_expr (fn, arglist));
|
build_function_call_expr (fn, arglist));
|
}
|
}
|
|
|
/* Fold function call to builtin strncpy. If SLEN is not NULL, it represents
|
/* Fold function call to builtin strncpy. If SLEN is not NULL, it represents
|
the length of the source string. Return NULL_TREE if no simplification
|
the length of the source string. Return NULL_TREE if no simplification
|
can be made. */
|
can be made. */
|
|
|
tree
|
tree
|
fold_builtin_strncpy (tree fndecl, tree arglist, tree slen)
|
fold_builtin_strncpy (tree fndecl, tree arglist, tree slen)
|
{
|
{
|
tree dest, src, len, fn;
|
tree dest, src, len, fn;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* If the LEN parameter is zero, return DEST. */
|
/* If the LEN parameter is zero, return DEST. */
|
if (integer_zerop (len))
|
if (integer_zerop (len))
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, src);
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, src);
|
|
|
/* We can't compare slen with len as constants below if len is not a
|
/* We can't compare slen with len as constants below if len is not a
|
constant. */
|
constant. */
|
if (len == 0 || TREE_CODE (len) != INTEGER_CST)
|
if (len == 0 || TREE_CODE (len) != INTEGER_CST)
|
return 0;
|
return 0;
|
|
|
if (!slen)
|
if (!slen)
|
slen = c_strlen (src, 1);
|
slen = c_strlen (src, 1);
|
|
|
/* Now, we must be passed a constant src ptr parameter. */
|
/* Now, we must be passed a constant src ptr parameter. */
|
if (slen == 0 || TREE_CODE (slen) != INTEGER_CST)
|
if (slen == 0 || TREE_CODE (slen) != INTEGER_CST)
|
return 0;
|
return 0;
|
|
|
slen = size_binop (PLUS_EXPR, slen, ssize_int (1));
|
slen = size_binop (PLUS_EXPR, slen, ssize_int (1));
|
|
|
/* We do not support simplification of this case, though we do
|
/* We do not support simplification of this case, though we do
|
support it when expanding trees into RTL. */
|
support it when expanding trees into RTL. */
|
/* FIXME: generate a call to __builtin_memset. */
|
/* FIXME: generate a call to __builtin_memset. */
|
if (tree_int_cst_lt (slen, len))
|
if (tree_int_cst_lt (slen, len))
|
return 0;
|
return 0;
|
|
|
/* OK transform into builtin memcpy. */
|
/* OK transform into builtin memcpy. */
|
fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)),
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)),
|
build_function_call_expr (fn, arglist));
|
build_function_call_expr (fn, arglist));
|
}
|
}
|
|
|
/* Fold function call to builtin memcmp. Return
|
/* Fold function call to builtin memcmp. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_memcmp (tree arglist)
|
fold_builtin_memcmp (tree arglist)
|
{
|
{
|
tree arg1, arg2, len;
|
tree arg1, arg2, len;
|
const char *p1, *p2;
|
const char *p1, *p2;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg1 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (arglist);
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* If the LEN parameter is zero, return zero. */
|
/* If the LEN parameter is zero, return zero. */
|
if (integer_zerop (len))
|
if (integer_zerop (len))
|
return omit_two_operands (integer_type_node, integer_zero_node,
|
return omit_two_operands (integer_type_node, integer_zero_node,
|
arg1, arg2);
|
arg1, arg2);
|
|
|
/* If ARG1 and ARG2 are the same (and not volatile), return zero. */
|
/* If ARG1 and ARG2 are the same (and not volatile), return zero. */
|
if (operand_equal_p (arg1, arg2, 0))
|
if (operand_equal_p (arg1, arg2, 0))
|
return omit_one_operand (integer_type_node, integer_zero_node, len);
|
return omit_one_operand (integer_type_node, integer_zero_node, len);
|
|
|
p1 = c_getstr (arg1);
|
p1 = c_getstr (arg1);
|
p2 = c_getstr (arg2);
|
p2 = c_getstr (arg2);
|
|
|
/* If all arguments are constant, and the value of len is not greater
|
/* If all arguments are constant, and the value of len is not greater
|
than the lengths of arg1 and arg2, evaluate at compile-time. */
|
than the lengths of arg1 and arg2, evaluate at compile-time. */
|
if (host_integerp (len, 1) && p1 && p2
|
if (host_integerp (len, 1) && p1 && p2
|
&& compare_tree_int (len, strlen (p1) + 1) <= 0
|
&& compare_tree_int (len, strlen (p1) + 1) <= 0
|
&& compare_tree_int (len, strlen (p2) + 1) <= 0)
|
&& compare_tree_int (len, strlen (p2) + 1) <= 0)
|
{
|
{
|
const int r = memcmp (p1, p2, tree_low_cst (len, 1));
|
const int r = memcmp (p1, p2, tree_low_cst (len, 1));
|
|
|
if (r > 0)
|
if (r > 0)
|
return integer_one_node;
|
return integer_one_node;
|
else if (r < 0)
|
else if (r < 0)
|
return integer_minus_one_node;
|
return integer_minus_one_node;
|
else
|
else
|
return integer_zero_node;
|
return integer_zero_node;
|
}
|
}
|
|
|
/* If len parameter is one, return an expression corresponding to
|
/* If len parameter is one, return an expression corresponding to
|
(*(const unsigned char*)arg1 - (const unsigned char*)arg2). */
|
(*(const unsigned char*)arg1 - (const unsigned char*)arg2). */
|
if (host_integerp (len, 1) && tree_low_cst (len, 1) == 1)
|
if (host_integerp (len, 1) && tree_low_cst (len, 1) == 1)
|
{
|
{
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_ptr_node
|
tree cst_uchar_ptr_node
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
|
|
tree ind1 = fold_convert (integer_type_node,
|
tree ind1 = fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg1)));
|
arg1)));
|
tree ind2 = fold_convert (integer_type_node,
|
tree ind2 = fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg2)));
|
arg2)));
|
return fold_build2 (MINUS_EXPR, integer_type_node, ind1, ind2);
|
return fold_build2 (MINUS_EXPR, integer_type_node, ind1, ind2);
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Fold function call to builtin strcmp. Return
|
/* Fold function call to builtin strcmp. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_strcmp (tree arglist)
|
fold_builtin_strcmp (tree arglist)
|
{
|
{
|
tree arg1, arg2;
|
tree arg1, arg2;
|
const char *p1, *p2;
|
const char *p1, *p2;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg1 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (arglist);
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
/* If ARG1 and ARG2 are the same (and not volatile), return zero. */
|
/* If ARG1 and ARG2 are the same (and not volatile), return zero. */
|
if (operand_equal_p (arg1, arg2, 0))
|
if (operand_equal_p (arg1, arg2, 0))
|
return integer_zero_node;
|
return integer_zero_node;
|
|
|
p1 = c_getstr (arg1);
|
p1 = c_getstr (arg1);
|
p2 = c_getstr (arg2);
|
p2 = c_getstr (arg2);
|
|
|
if (p1 && p2)
|
if (p1 && p2)
|
{
|
{
|
const int i = strcmp (p1, p2);
|
const int i = strcmp (p1, p2);
|
if (i < 0)
|
if (i < 0)
|
return integer_minus_one_node;
|
return integer_minus_one_node;
|
else if (i > 0)
|
else if (i > 0)
|
return integer_one_node;
|
return integer_one_node;
|
else
|
else
|
return integer_zero_node;
|
return integer_zero_node;
|
}
|
}
|
|
|
/* If the second arg is "", return *(const unsigned char*)arg1. */
|
/* If the second arg is "", return *(const unsigned char*)arg1. */
|
if (p2 && *p2 == '\0')
|
if (p2 && *p2 == '\0')
|
{
|
{
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_ptr_node
|
tree cst_uchar_ptr_node
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
|
|
return fold_convert (integer_type_node,
|
return fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg1)));
|
arg1)));
|
}
|
}
|
|
|
/* If the first arg is "", return -*(const unsigned char*)arg2. */
|
/* If the first arg is "", return -*(const unsigned char*)arg2. */
|
if (p1 && *p1 == '\0')
|
if (p1 && *p1 == '\0')
|
{
|
{
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_ptr_node
|
tree cst_uchar_ptr_node
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
|
|
tree temp = fold_convert (integer_type_node,
|
tree temp = fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg2)));
|
arg2)));
|
return fold_build1 (NEGATE_EXPR, integer_type_node, temp);
|
return fold_build1 (NEGATE_EXPR, integer_type_node, temp);
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Fold function call to builtin strncmp. Return
|
/* Fold function call to builtin strncmp. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_strncmp (tree arglist)
|
fold_builtin_strncmp (tree arglist)
|
{
|
{
|
tree arg1, arg2, len;
|
tree arg1, arg2, len;
|
const char *p1, *p2;
|
const char *p1, *p2;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg1 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (arglist);
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* If the LEN parameter is zero, return zero. */
|
/* If the LEN parameter is zero, return zero. */
|
if (integer_zerop (len))
|
if (integer_zerop (len))
|
return omit_two_operands (integer_type_node, integer_zero_node,
|
return omit_two_operands (integer_type_node, integer_zero_node,
|
arg1, arg2);
|
arg1, arg2);
|
|
|
/* If ARG1 and ARG2 are the same (and not volatile), return zero. */
|
/* If ARG1 and ARG2 are the same (and not volatile), return zero. */
|
if (operand_equal_p (arg1, arg2, 0))
|
if (operand_equal_p (arg1, arg2, 0))
|
return omit_one_operand (integer_type_node, integer_zero_node, len);
|
return omit_one_operand (integer_type_node, integer_zero_node, len);
|
|
|
p1 = c_getstr (arg1);
|
p1 = c_getstr (arg1);
|
p2 = c_getstr (arg2);
|
p2 = c_getstr (arg2);
|
|
|
if (host_integerp (len, 1) && p1 && p2)
|
if (host_integerp (len, 1) && p1 && p2)
|
{
|
{
|
const int i = strncmp (p1, p2, tree_low_cst (len, 1));
|
const int i = strncmp (p1, p2, tree_low_cst (len, 1));
|
if (i > 0)
|
if (i > 0)
|
return integer_one_node;
|
return integer_one_node;
|
else if (i < 0)
|
else if (i < 0)
|
return integer_minus_one_node;
|
return integer_minus_one_node;
|
else
|
else
|
return integer_zero_node;
|
return integer_zero_node;
|
}
|
}
|
|
|
/* If the second arg is "", and the length is greater than zero,
|
/* If the second arg is "", and the length is greater than zero,
|
return *(const unsigned char*)arg1. */
|
return *(const unsigned char*)arg1. */
|
if (p2 && *p2 == '\0'
|
if (p2 && *p2 == '\0'
|
&& TREE_CODE (len) == INTEGER_CST
|
&& TREE_CODE (len) == INTEGER_CST
|
&& tree_int_cst_sgn (len) == 1)
|
&& tree_int_cst_sgn (len) == 1)
|
{
|
{
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_ptr_node
|
tree cst_uchar_ptr_node
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
|
|
return fold_convert (integer_type_node,
|
return fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg1)));
|
arg1)));
|
}
|
}
|
|
|
/* If the first arg is "", and the length is greater than zero,
|
/* If the first arg is "", and the length is greater than zero,
|
return -*(const unsigned char*)arg2. */
|
return -*(const unsigned char*)arg2. */
|
if (p1 && *p1 == '\0'
|
if (p1 && *p1 == '\0'
|
&& TREE_CODE (len) == INTEGER_CST
|
&& TREE_CODE (len) == INTEGER_CST
|
&& tree_int_cst_sgn (len) == 1)
|
&& tree_int_cst_sgn (len) == 1)
|
{
|
{
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_ptr_node
|
tree cst_uchar_ptr_node
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
|
|
tree temp = fold_convert (integer_type_node,
|
tree temp = fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg2)));
|
arg2)));
|
return fold_build1 (NEGATE_EXPR, integer_type_node, temp);
|
return fold_build1 (NEGATE_EXPR, integer_type_node, temp);
|
}
|
}
|
|
|
/* If len parameter is one, return an expression corresponding to
|
/* If len parameter is one, return an expression corresponding to
|
(*(const unsigned char*)arg1 - (const unsigned char*)arg2). */
|
(*(const unsigned char*)arg1 - (const unsigned char*)arg2). */
|
if (host_integerp (len, 1) && tree_low_cst (len, 1) == 1)
|
if (host_integerp (len, 1) && tree_low_cst (len, 1) == 1)
|
{
|
{
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_node = build_type_variant (unsigned_char_type_node, 1, 0);
|
tree cst_uchar_ptr_node
|
tree cst_uchar_ptr_node
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
= build_pointer_type_for_mode (cst_uchar_node, ptr_mode, true);
|
|
|
tree ind1 = fold_convert (integer_type_node,
|
tree ind1 = fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg1)));
|
arg1)));
|
tree ind2 = fold_convert (integer_type_node,
|
tree ind2 = fold_convert (integer_type_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
build1 (INDIRECT_REF, cst_uchar_node,
|
fold_convert (cst_uchar_ptr_node,
|
fold_convert (cst_uchar_ptr_node,
|
arg2)));
|
arg2)));
|
return fold_build2 (MINUS_EXPR, integer_type_node, ind1, ind2);
|
return fold_build2 (MINUS_EXPR, integer_type_node, ind1, ind2);
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Fold function call to builtin signbit, signbitf or signbitl. Return
|
/* Fold function call to builtin signbit, signbitf or signbitl. Return
|
NULL_TREE if no simplification can be made. */
|
NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_signbit (tree fndecl, tree arglist)
|
fold_builtin_signbit (tree fndecl, tree arglist)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree arg, temp;
|
tree arg, temp;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
|
|
/* If ARG is a compile-time constant, determine the result. */
|
/* If ARG is a compile-time constant, determine the result. */
|
if (TREE_CODE (arg) == REAL_CST
|
if (TREE_CODE (arg) == REAL_CST
|
&& !TREE_CONSTANT_OVERFLOW (arg))
|
&& !TREE_CONSTANT_OVERFLOW (arg))
|
{
|
{
|
REAL_VALUE_TYPE c;
|
REAL_VALUE_TYPE c;
|
|
|
c = TREE_REAL_CST (arg);
|
c = TREE_REAL_CST (arg);
|
temp = REAL_VALUE_NEGATIVE (c) ? integer_one_node : integer_zero_node;
|
temp = REAL_VALUE_NEGATIVE (c) ? integer_one_node : integer_zero_node;
|
return fold_convert (type, temp);
|
return fold_convert (type, temp);
|
}
|
}
|
|
|
/* If ARG is non-negative, the result is always zero. */
|
/* If ARG is non-negative, the result is always zero. */
|
if (tree_expr_nonnegative_p (arg))
|
if (tree_expr_nonnegative_p (arg))
|
return omit_one_operand (type, integer_zero_node, arg);
|
return omit_one_operand (type, integer_zero_node, arg);
|
|
|
/* If ARG's format doesn't have signed zeros, return "arg < 0.0". */
|
/* If ARG's format doesn't have signed zeros, return "arg < 0.0". */
|
if (!HONOR_SIGNED_ZEROS (TYPE_MODE (TREE_TYPE (arg))))
|
if (!HONOR_SIGNED_ZEROS (TYPE_MODE (TREE_TYPE (arg))))
|
return fold_build2 (LT_EXPR, type, arg,
|
return fold_build2 (LT_EXPR, type, arg,
|
build_real (TREE_TYPE (arg), dconst0));
|
build_real (TREE_TYPE (arg), dconst0));
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold function call to builtin copysign, copysignf or copysignl.
|
/* Fold function call to builtin copysign, copysignf or copysignl.
|
Return NULL_TREE if no simplification can be made. */
|
Return NULL_TREE if no simplification can be made. */
|
|
|
static tree
|
static tree
|
fold_builtin_copysign (tree fndecl, tree arglist, tree type)
|
fold_builtin_copysign (tree fndecl, tree arglist, tree type)
|
{
|
{
|
tree arg1, arg2, tem;
|
tree arg1, arg2, tem;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
arg1 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (arglist);
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg2 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
/* copysign(X,X) is X. */
|
/* copysign(X,X) is X. */
|
if (operand_equal_p (arg1, arg2, 0))
|
if (operand_equal_p (arg1, arg2, 0))
|
return fold_convert (type, arg1);
|
return fold_convert (type, arg1);
|
|
|
/* If ARG1 and ARG2 are compile-time constants, determine the result. */
|
/* If ARG1 and ARG2 are compile-time constants, determine the result. */
|
if (TREE_CODE (arg1) == REAL_CST
|
if (TREE_CODE (arg1) == REAL_CST
|
&& TREE_CODE (arg2) == REAL_CST
|
&& TREE_CODE (arg2) == REAL_CST
|
&& !TREE_CONSTANT_OVERFLOW (arg1)
|
&& !TREE_CONSTANT_OVERFLOW (arg1)
|
&& !TREE_CONSTANT_OVERFLOW (arg2))
|
&& !TREE_CONSTANT_OVERFLOW (arg2))
|
{
|
{
|
REAL_VALUE_TYPE c1, c2;
|
REAL_VALUE_TYPE c1, c2;
|
|
|
c1 = TREE_REAL_CST (arg1);
|
c1 = TREE_REAL_CST (arg1);
|
c2 = TREE_REAL_CST (arg2);
|
c2 = TREE_REAL_CST (arg2);
|
/* c1.sign := c2.sign. */
|
/* c1.sign := c2.sign. */
|
real_copysign (&c1, &c2);
|
real_copysign (&c1, &c2);
|
return build_real (type, c1);
|
return build_real (type, c1);
|
}
|
}
|
|
|
/* copysign(X, Y) is fabs(X) when Y is always non-negative.
|
/* copysign(X, Y) is fabs(X) when Y is always non-negative.
|
Remember to evaluate Y for side-effects. */
|
Remember to evaluate Y for side-effects. */
|
if (tree_expr_nonnegative_p (arg2))
|
if (tree_expr_nonnegative_p (arg2))
|
return omit_one_operand (type,
|
return omit_one_operand (type,
|
fold_build1 (ABS_EXPR, type, arg1),
|
fold_build1 (ABS_EXPR, type, arg1),
|
arg2);
|
arg2);
|
|
|
/* Strip sign changing operations for the first argument. */
|
/* Strip sign changing operations for the first argument. */
|
tem = fold_strip_sign_ops (arg1);
|
tem = fold_strip_sign_ops (arg1);
|
if (tem)
|
if (tem)
|
{
|
{
|
arglist = tree_cons (NULL_TREE, tem, TREE_CHAIN (arglist));
|
arglist = tree_cons (NULL_TREE, tem, TREE_CHAIN (arglist));
|
return build_function_call_expr (fndecl, arglist);
|
return build_function_call_expr (fndecl, arglist);
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
|
|
/* Fold a call to builtin isascii. */
|
/* Fold a call to builtin isascii. */
|
|
|
static tree
|
static tree
|
fold_builtin_isascii (tree arglist)
|
fold_builtin_isascii (tree arglist)
|
{
|
{
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
/* Transform isascii(c) -> ((c & ~0x7f) == 0). */
|
/* Transform isascii(c) -> ((c & ~0x7f) == 0). */
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
arg = build2 (BIT_AND_EXPR, integer_type_node, arg,
|
arg = build2 (BIT_AND_EXPR, integer_type_node, arg,
|
build_int_cst (NULL_TREE,
|
build_int_cst (NULL_TREE,
|
~ (unsigned HOST_WIDE_INT) 0x7f));
|
~ (unsigned HOST_WIDE_INT) 0x7f));
|
arg = fold_build2 (EQ_EXPR, integer_type_node,
|
arg = fold_build2 (EQ_EXPR, integer_type_node,
|
arg, integer_zero_node);
|
arg, integer_zero_node);
|
|
|
if (in_gimple_form && !TREE_CONSTANT (arg))
|
if (in_gimple_form && !TREE_CONSTANT (arg))
|
return NULL_TREE;
|
return NULL_TREE;
|
else
|
else
|
return arg;
|
return arg;
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to builtin toascii. */
|
/* Fold a call to builtin toascii. */
|
|
|
static tree
|
static tree
|
fold_builtin_toascii (tree arglist)
|
fold_builtin_toascii (tree arglist)
|
{
|
{
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
/* Transform toascii(c) -> (c & 0x7f). */
|
/* Transform toascii(c) -> (c & 0x7f). */
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
return fold_build2 (BIT_AND_EXPR, integer_type_node, arg,
|
return fold_build2 (BIT_AND_EXPR, integer_type_node, arg,
|
build_int_cst (NULL_TREE, 0x7f));
|
build_int_cst (NULL_TREE, 0x7f));
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to builtin isdigit. */
|
/* Fold a call to builtin isdigit. */
|
|
|
static tree
|
static tree
|
fold_builtin_isdigit (tree arglist)
|
fold_builtin_isdigit (tree arglist)
|
{
|
{
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (! validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
/* Transform isdigit(c) -> (unsigned)(c) - '0' <= 9. */
|
/* Transform isdigit(c) -> (unsigned)(c) - '0' <= 9. */
|
/* According to the C standard, isdigit is unaffected by locale.
|
/* According to the C standard, isdigit is unaffected by locale.
|
However, it definitely is affected by the target character set. */
|
However, it definitely is affected by the target character set. */
|
tree arg;
|
tree arg;
|
unsigned HOST_WIDE_INT target_digit0
|
unsigned HOST_WIDE_INT target_digit0
|
= lang_hooks.to_target_charset ('0');
|
= lang_hooks.to_target_charset ('0');
|
|
|
if (target_digit0 == 0)
|
if (target_digit0 == 0)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
arg = fold_convert (unsigned_type_node, TREE_VALUE (arglist));
|
arg = fold_convert (unsigned_type_node, TREE_VALUE (arglist));
|
arg = build2 (MINUS_EXPR, unsigned_type_node, arg,
|
arg = build2 (MINUS_EXPR, unsigned_type_node, arg,
|
build_int_cst (unsigned_type_node, target_digit0));
|
build_int_cst (unsigned_type_node, target_digit0));
|
arg = fold_build2 (LE_EXPR, integer_type_node, arg,
|
arg = fold_build2 (LE_EXPR, integer_type_node, arg,
|
build_int_cst (unsigned_type_node, 9));
|
build_int_cst (unsigned_type_node, 9));
|
if (in_gimple_form && !TREE_CONSTANT (arg))
|
if (in_gimple_form && !TREE_CONSTANT (arg))
|
return NULL_TREE;
|
return NULL_TREE;
|
else
|
else
|
return arg;
|
return arg;
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to fabs, fabsf or fabsl. */
|
/* Fold a call to fabs, fabsf or fabsl. */
|
|
|
static tree
|
static tree
|
fold_builtin_fabs (tree arglist, tree type)
|
fold_builtin_fabs (tree arglist, tree type)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
arg = fold_convert (type, arg);
|
arg = fold_convert (type, arg);
|
if (TREE_CODE (arg) == REAL_CST)
|
if (TREE_CODE (arg) == REAL_CST)
|
return fold_abs_const (arg, type);
|
return fold_abs_const (arg, type);
|
return fold_build1 (ABS_EXPR, type, arg);
|
return fold_build1 (ABS_EXPR, type, arg);
|
}
|
}
|
|
|
/* Fold a call to abs, labs, llabs or imaxabs. */
|
/* Fold a call to abs, labs, llabs or imaxabs. */
|
|
|
static tree
|
static tree
|
fold_builtin_abs (tree arglist, tree type)
|
fold_builtin_abs (tree arglist, tree type)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (!validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
arg = fold_convert (type, arg);
|
arg = fold_convert (type, arg);
|
if (TREE_CODE (arg) == INTEGER_CST)
|
if (TREE_CODE (arg) == INTEGER_CST)
|
return fold_abs_const (arg, type);
|
return fold_abs_const (arg, type);
|
return fold_build1 (ABS_EXPR, type, arg);
|
return fold_build1 (ABS_EXPR, type, arg);
|
}
|
}
|
|
|
/* Fold a call to __builtin_isnan(), __builtin_isinf, __builtin_finite.
|
/* Fold a call to __builtin_isnan(), __builtin_isinf, __builtin_finite.
|
EXP is the CALL_EXPR for the call. */
|
EXP is the CALL_EXPR for the call. */
|
|
|
static tree
|
static tree
|
fold_builtin_classify (tree fndecl, tree arglist, int builtin_index)
|
fold_builtin_classify (tree fndecl, tree arglist, int builtin_index)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree arg;
|
tree arg;
|
REAL_VALUE_TYPE r;
|
REAL_VALUE_TYPE r;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
|
{
|
{
|
/* Check that we have exactly one argument. */
|
/* Check that we have exactly one argument. */
|
if (arglist == 0)
|
if (arglist == 0)
|
{
|
{
|
error ("too few arguments to function %qs",
|
error ("too few arguments to function %qs",
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
return error_mark_node;
|
return error_mark_node;
|
}
|
}
|
else if (TREE_CHAIN (arglist) != 0)
|
else if (TREE_CHAIN (arglist) != 0)
|
{
|
{
|
error ("too many arguments to function %qs",
|
error ("too many arguments to function %qs",
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
return error_mark_node;
|
return error_mark_node;
|
}
|
}
|
else
|
else
|
{
|
{
|
error ("non-floating-point argument to function %qs",
|
error ("non-floating-point argument to function %qs",
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
return error_mark_node;
|
return error_mark_node;
|
}
|
}
|
}
|
}
|
|
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
switch (builtin_index)
|
switch (builtin_index)
|
{
|
{
|
case BUILT_IN_ISINF:
|
case BUILT_IN_ISINF:
|
if (!MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
|
if (!MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
|
return omit_one_operand (type, integer_zero_node, arg);
|
return omit_one_operand (type, integer_zero_node, arg);
|
|
|
if (TREE_CODE (arg) == REAL_CST)
|
if (TREE_CODE (arg) == REAL_CST)
|
{
|
{
|
r = TREE_REAL_CST (arg);
|
r = TREE_REAL_CST (arg);
|
if (real_isinf (&r))
|
if (real_isinf (&r))
|
return real_compare (GT_EXPR, &r, &dconst0)
|
return real_compare (GT_EXPR, &r, &dconst0)
|
? integer_one_node : integer_minus_one_node;
|
? integer_one_node : integer_minus_one_node;
|
else
|
else
|
return integer_zero_node;
|
return integer_zero_node;
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
case BUILT_IN_FINITE:
|
case BUILT_IN_FINITE:
|
if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg)))
|
if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg)))
|
&& !MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
|
&& !MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
|
return omit_one_operand (type, integer_zero_node, arg);
|
return omit_one_operand (type, integer_zero_node, arg);
|
|
|
if (TREE_CODE (arg) == REAL_CST)
|
if (TREE_CODE (arg) == REAL_CST)
|
{
|
{
|
r = TREE_REAL_CST (arg);
|
r = TREE_REAL_CST (arg);
|
return real_isinf (&r) || real_isnan (&r)
|
return real_isinf (&r) || real_isnan (&r)
|
? integer_zero_node : integer_one_node;
|
? integer_zero_node : integer_one_node;
|
}
|
}
|
|
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
case BUILT_IN_ISNAN:
|
case BUILT_IN_ISNAN:
|
if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg))))
|
if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg))))
|
return omit_one_operand (type, integer_zero_node, arg);
|
return omit_one_operand (type, integer_zero_node, arg);
|
|
|
if (TREE_CODE (arg) == REAL_CST)
|
if (TREE_CODE (arg) == REAL_CST)
|
{
|
{
|
r = TREE_REAL_CST (arg);
|
r = TREE_REAL_CST (arg);
|
return real_isnan (&r) ? integer_one_node : integer_zero_node;
|
return real_isnan (&r) ? integer_one_node : integer_zero_node;
|
}
|
}
|
|
|
arg = builtin_save_expr (arg);
|
arg = builtin_save_expr (arg);
|
return fold_build2 (UNORDERED_EXPR, type, arg, arg);
|
return fold_build2 (UNORDERED_EXPR, type, arg, arg);
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to an unordered comparison function such as
|
/* Fold a call to an unordered comparison function such as
|
__builtin_isgreater(). FNDECL is the FUNCTION_DECL for the function
|
__builtin_isgreater(). FNDECL is the FUNCTION_DECL for the function
|
being called and ARGLIST is the argument list for the call.
|
being called and ARGLIST is the argument list for the call.
|
UNORDERED_CODE and ORDERED_CODE are comparison codes that give
|
UNORDERED_CODE and ORDERED_CODE are comparison codes that give
|
the opposite of the desired result. UNORDERED_CODE is used
|
the opposite of the desired result. UNORDERED_CODE is used
|
for modes that can hold NaNs and ORDERED_CODE is used for
|
for modes that can hold NaNs and ORDERED_CODE is used for
|
the rest. */
|
the rest. */
|
|
|
static tree
|
static tree
|
fold_builtin_unordered_cmp (tree fndecl, tree arglist,
|
fold_builtin_unordered_cmp (tree fndecl, tree arglist,
|
enum tree_code unordered_code,
|
enum tree_code unordered_code,
|
enum tree_code ordered_code)
|
enum tree_code ordered_code)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
enum tree_code code;
|
enum tree_code code;
|
tree arg0, arg1;
|
tree arg0, arg1;
|
tree type0, type1;
|
tree type0, type1;
|
enum tree_code code0, code1;
|
enum tree_code code0, code1;
|
tree cmp_type = NULL_TREE;
|
tree cmp_type = NULL_TREE;
|
|
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
|
{
|
{
|
/* Check that we have exactly two arguments. */
|
/* Check that we have exactly two arguments. */
|
if (arglist == 0 || TREE_CHAIN (arglist) == 0)
|
if (arglist == 0 || TREE_CHAIN (arglist) == 0)
|
{
|
{
|
error ("too few arguments to function %qs",
|
error ("too few arguments to function %qs",
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
return error_mark_node;
|
return error_mark_node;
|
}
|
}
|
else if (TREE_CHAIN (TREE_CHAIN (arglist)) != 0)
|
else if (TREE_CHAIN (TREE_CHAIN (arglist)) != 0)
|
{
|
{
|
error ("too many arguments to function %qs",
|
error ("too many arguments to function %qs",
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
return error_mark_node;
|
return error_mark_node;
|
}
|
}
|
}
|
}
|
|
|
arg0 = TREE_VALUE (arglist);
|
arg0 = TREE_VALUE (arglist);
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
arg1 = TREE_VALUE (TREE_CHAIN (arglist));
|
|
|
type0 = TREE_TYPE (arg0);
|
type0 = TREE_TYPE (arg0);
|
type1 = TREE_TYPE (arg1);
|
type1 = TREE_TYPE (arg1);
|
|
|
code0 = TREE_CODE (type0);
|
code0 = TREE_CODE (type0);
|
code1 = TREE_CODE (type1);
|
code1 = TREE_CODE (type1);
|
|
|
if (code0 == REAL_TYPE && code1 == REAL_TYPE)
|
if (code0 == REAL_TYPE && code1 == REAL_TYPE)
|
/* Choose the wider of two real types. */
|
/* Choose the wider of two real types. */
|
cmp_type = TYPE_PRECISION (type0) >= TYPE_PRECISION (type1)
|
cmp_type = TYPE_PRECISION (type0) >= TYPE_PRECISION (type1)
|
? type0 : type1;
|
? type0 : type1;
|
else if (code0 == REAL_TYPE && code1 == INTEGER_TYPE)
|
else if (code0 == REAL_TYPE && code1 == INTEGER_TYPE)
|
cmp_type = type0;
|
cmp_type = type0;
|
else if (code0 == INTEGER_TYPE && code1 == REAL_TYPE)
|
else if (code0 == INTEGER_TYPE && code1 == REAL_TYPE)
|
cmp_type = type1;
|
cmp_type = type1;
|
else
|
else
|
{
|
{
|
error ("non-floating-point argument to function %qs",
|
error ("non-floating-point argument to function %qs",
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
|
return error_mark_node;
|
return error_mark_node;
|
}
|
}
|
|
|
arg0 = fold_convert (cmp_type, arg0);
|
arg0 = fold_convert (cmp_type, arg0);
|
arg1 = fold_convert (cmp_type, arg1);
|
arg1 = fold_convert (cmp_type, arg1);
|
|
|
if (unordered_code == UNORDERED_EXPR)
|
if (unordered_code == UNORDERED_EXPR)
|
{
|
{
|
if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg0))))
|
if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg0))))
|
return omit_two_operands (type, integer_zero_node, arg0, arg1);
|
return omit_two_operands (type, integer_zero_node, arg0, arg1);
|
return fold_build2 (UNORDERED_EXPR, type, arg0, arg1);
|
return fold_build2 (UNORDERED_EXPR, type, arg0, arg1);
|
}
|
}
|
|
|
code = MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg0))) ? unordered_code
|
code = MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg0))) ? unordered_code
|
: ordered_code;
|
: ordered_code;
|
return fold_build1 (TRUTH_NOT_EXPR, type,
|
return fold_build1 (TRUTH_NOT_EXPR, type,
|
fold_build2 (code, type, arg0, arg1));
|
fold_build2 (code, type, arg0, arg1));
|
}
|
}
|
|
|
/* Used by constant folding to simplify calls to builtin functions. EXP is
|
/* Used by constant folding to simplify calls to builtin functions. EXP is
|
the CALL_EXPR of a call to a builtin function. IGNORE is true if the
|
the CALL_EXPR of a call to a builtin function. IGNORE is true if the
|
result of the function call is ignored. This function returns NULL_TREE
|
result of the function call is ignored. This function returns NULL_TREE
|
if no simplification was possible. */
|
if no simplification was possible. */
|
|
|
static tree
|
static tree
|
fold_builtin_1 (tree fndecl, tree arglist, bool ignore)
|
fold_builtin_1 (tree fndecl, tree arglist, bool ignore)
|
{
|
{
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
tree type = TREE_TYPE (TREE_TYPE (fndecl));
|
enum built_in_function fcode;
|
enum built_in_function fcode;
|
|
|
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
|
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
|
return targetm.fold_builtin (fndecl, arglist, ignore);
|
return targetm.fold_builtin (fndecl, arglist, ignore);
|
|
|
fcode = DECL_FUNCTION_CODE (fndecl);
|
fcode = DECL_FUNCTION_CODE (fndecl);
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
case BUILT_IN_FPUTS:
|
case BUILT_IN_FPUTS:
|
return fold_builtin_fputs (arglist, ignore, false, NULL_TREE);
|
return fold_builtin_fputs (arglist, ignore, false, NULL_TREE);
|
|
|
case BUILT_IN_FPUTS_UNLOCKED:
|
case BUILT_IN_FPUTS_UNLOCKED:
|
return fold_builtin_fputs (arglist, ignore, true, NULL_TREE);
|
return fold_builtin_fputs (arglist, ignore, true, NULL_TREE);
|
|
|
case BUILT_IN_STRSTR:
|
case BUILT_IN_STRSTR:
|
return fold_builtin_strstr (arglist, type);
|
return fold_builtin_strstr (arglist, type);
|
|
|
case BUILT_IN_STRCAT:
|
case BUILT_IN_STRCAT:
|
return fold_builtin_strcat (arglist);
|
return fold_builtin_strcat (arglist);
|
|
|
case BUILT_IN_STRNCAT:
|
case BUILT_IN_STRNCAT:
|
return fold_builtin_strncat (arglist);
|
return fold_builtin_strncat (arglist);
|
|
|
case BUILT_IN_STRSPN:
|
case BUILT_IN_STRSPN:
|
return fold_builtin_strspn (arglist);
|
return fold_builtin_strspn (arglist);
|
|
|
case BUILT_IN_STRCSPN:
|
case BUILT_IN_STRCSPN:
|
return fold_builtin_strcspn (arglist);
|
return fold_builtin_strcspn (arglist);
|
|
|
case BUILT_IN_STRCHR:
|
case BUILT_IN_STRCHR:
|
case BUILT_IN_INDEX:
|
case BUILT_IN_INDEX:
|
return fold_builtin_strchr (arglist, type);
|
return fold_builtin_strchr (arglist, type);
|
|
|
case BUILT_IN_STRRCHR:
|
case BUILT_IN_STRRCHR:
|
case BUILT_IN_RINDEX:
|
case BUILT_IN_RINDEX:
|
return fold_builtin_strrchr (arglist, type);
|
return fold_builtin_strrchr (arglist, type);
|
|
|
case BUILT_IN_STRCPY:
|
case BUILT_IN_STRCPY:
|
return fold_builtin_strcpy (fndecl, arglist, NULL_TREE);
|
return fold_builtin_strcpy (fndecl, arglist, NULL_TREE);
|
|
|
case BUILT_IN_STRNCPY:
|
case BUILT_IN_STRNCPY:
|
return fold_builtin_strncpy (fndecl, arglist, NULL_TREE);
|
return fold_builtin_strncpy (fndecl, arglist, NULL_TREE);
|
|
|
case BUILT_IN_STRCMP:
|
case BUILT_IN_STRCMP:
|
return fold_builtin_strcmp (arglist);
|
return fold_builtin_strcmp (arglist);
|
|
|
case BUILT_IN_STRNCMP:
|
case BUILT_IN_STRNCMP:
|
return fold_builtin_strncmp (arglist);
|
return fold_builtin_strncmp (arglist);
|
|
|
case BUILT_IN_STRPBRK:
|
case BUILT_IN_STRPBRK:
|
return fold_builtin_strpbrk (arglist, type);
|
return fold_builtin_strpbrk (arglist, type);
|
|
|
case BUILT_IN_BCMP:
|
case BUILT_IN_BCMP:
|
case BUILT_IN_MEMCMP:
|
case BUILT_IN_MEMCMP:
|
return fold_builtin_memcmp (arglist);
|
return fold_builtin_memcmp (arglist);
|
|
|
case BUILT_IN_SPRINTF:
|
case BUILT_IN_SPRINTF:
|
return fold_builtin_sprintf (arglist, ignore);
|
return fold_builtin_sprintf (arglist, ignore);
|
|
|
case BUILT_IN_CONSTANT_P:
|
case BUILT_IN_CONSTANT_P:
|
{
|
{
|
tree val;
|
tree val;
|
|
|
val = fold_builtin_constant_p (arglist);
|
val = fold_builtin_constant_p (arglist);
|
/* Gimplification will pull the CALL_EXPR for the builtin out of
|
/* Gimplification will pull the CALL_EXPR for the builtin out of
|
an if condition. When not optimizing, we'll not CSE it back.
|
an if condition. When not optimizing, we'll not CSE it back.
|
To avoid link error types of regressions, return false now. */
|
To avoid link error types of regressions, return false now. */
|
if (!val && !optimize)
|
if (!val && !optimize)
|
val = integer_zero_node;
|
val = integer_zero_node;
|
|
|
return val;
|
return val;
|
}
|
}
|
|
|
case BUILT_IN_EXPECT:
|
case BUILT_IN_EXPECT:
|
return fold_builtin_expect (arglist);
|
return fold_builtin_expect (arglist);
|
|
|
case BUILT_IN_CLASSIFY_TYPE:
|
case BUILT_IN_CLASSIFY_TYPE:
|
return fold_builtin_classify_type (arglist);
|
return fold_builtin_classify_type (arglist);
|
|
|
case BUILT_IN_STRLEN:
|
case BUILT_IN_STRLEN:
|
return fold_builtin_strlen (arglist);
|
return fold_builtin_strlen (arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_FABS):
|
CASE_FLT_FN (BUILT_IN_FABS):
|
return fold_builtin_fabs (arglist, type);
|
return fold_builtin_fabs (arglist, type);
|
|
|
case BUILT_IN_ABS:
|
case BUILT_IN_ABS:
|
case BUILT_IN_LABS:
|
case BUILT_IN_LABS:
|
case BUILT_IN_LLABS:
|
case BUILT_IN_LLABS:
|
case BUILT_IN_IMAXABS:
|
case BUILT_IN_IMAXABS:
|
return fold_builtin_abs (arglist, type);
|
return fold_builtin_abs (arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_CONJ):
|
CASE_FLT_FN (BUILT_IN_CONJ):
|
if (validate_arglist (arglist, COMPLEX_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, COMPLEX_TYPE, VOID_TYPE))
|
return fold_build1 (CONJ_EXPR, type, TREE_VALUE (arglist));
|
return fold_build1 (CONJ_EXPR, type, TREE_VALUE (arglist));
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_CREAL):
|
CASE_FLT_FN (BUILT_IN_CREAL):
|
if (validate_arglist (arglist, COMPLEX_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, COMPLEX_TYPE, VOID_TYPE))
|
return non_lvalue (fold_build1 (REALPART_EXPR, type,
|
return non_lvalue (fold_build1 (REALPART_EXPR, type,
|
TREE_VALUE (arglist)));
|
TREE_VALUE (arglist)));
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_CIMAG):
|
CASE_FLT_FN (BUILT_IN_CIMAG):
|
if (validate_arglist (arglist, COMPLEX_TYPE, VOID_TYPE))
|
if (validate_arglist (arglist, COMPLEX_TYPE, VOID_TYPE))
|
return non_lvalue (fold_build1 (IMAGPART_EXPR, type,
|
return non_lvalue (fold_build1 (IMAGPART_EXPR, type,
|
TREE_VALUE (arglist)));
|
TREE_VALUE (arglist)));
|
break;
|
break;
|
|
|
CASE_FLT_FN (BUILT_IN_CABS):
|
CASE_FLT_FN (BUILT_IN_CABS):
|
return fold_builtin_cabs (arglist, type, fndecl);
|
return fold_builtin_cabs (arglist, type, fndecl);
|
|
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
CASE_FLT_FN (BUILT_IN_SQRT):
|
return fold_builtin_sqrt (arglist, type);
|
return fold_builtin_sqrt (arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_CBRT):
|
CASE_FLT_FN (BUILT_IN_CBRT):
|
return fold_builtin_cbrt (arglist, type);
|
return fold_builtin_cbrt (arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_SIN):
|
CASE_FLT_FN (BUILT_IN_SIN):
|
return fold_builtin_sin (arglist);
|
return fold_builtin_sin (arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_COS):
|
CASE_FLT_FN (BUILT_IN_COS):
|
return fold_builtin_cos (arglist, type, fndecl);
|
return fold_builtin_cos (arglist, type, fndecl);
|
|
|
CASE_FLT_FN (BUILT_IN_EXP):
|
CASE_FLT_FN (BUILT_IN_EXP):
|
return fold_builtin_exponent (fndecl, arglist, &dconste);
|
return fold_builtin_exponent (fndecl, arglist, &dconste);
|
|
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
CASE_FLT_FN (BUILT_IN_EXP2):
|
return fold_builtin_exponent (fndecl, arglist, &dconst2);
|
return fold_builtin_exponent (fndecl, arglist, &dconst2);
|
|
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_EXP10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
CASE_FLT_FN (BUILT_IN_POW10):
|
return fold_builtin_exponent (fndecl, arglist, &dconst10);
|
return fold_builtin_exponent (fndecl, arglist, &dconst10);
|
|
|
CASE_FLT_FN (BUILT_IN_LOG):
|
CASE_FLT_FN (BUILT_IN_LOG):
|
return fold_builtin_logarithm (fndecl, arglist, &dconste);
|
return fold_builtin_logarithm (fndecl, arglist, &dconste);
|
|
|
CASE_FLT_FN (BUILT_IN_LOG2):
|
CASE_FLT_FN (BUILT_IN_LOG2):
|
return fold_builtin_logarithm (fndecl, arglist, &dconst2);
|
return fold_builtin_logarithm (fndecl, arglist, &dconst2);
|
|
|
CASE_FLT_FN (BUILT_IN_LOG10):
|
CASE_FLT_FN (BUILT_IN_LOG10):
|
return fold_builtin_logarithm (fndecl, arglist, &dconst10);
|
return fold_builtin_logarithm (fndecl, arglist, &dconst10);
|
|
|
CASE_FLT_FN (BUILT_IN_TAN):
|
CASE_FLT_FN (BUILT_IN_TAN):
|
return fold_builtin_tan (arglist);
|
return fold_builtin_tan (arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_ATAN):
|
CASE_FLT_FN (BUILT_IN_ATAN):
|
return fold_builtin_atan (arglist, type);
|
return fold_builtin_atan (arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_POW):
|
CASE_FLT_FN (BUILT_IN_POW):
|
return fold_builtin_pow (fndecl, arglist, type);
|
return fold_builtin_pow (fndecl, arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_POWI):
|
CASE_FLT_FN (BUILT_IN_POWI):
|
return fold_builtin_powi (fndecl, arglist, type);
|
return fold_builtin_powi (fndecl, arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_INF):
|
CASE_FLT_FN (BUILT_IN_INF):
|
case BUILT_IN_INFD32:
|
case BUILT_IN_INFD32:
|
case BUILT_IN_INFD64:
|
case BUILT_IN_INFD64:
|
case BUILT_IN_INFD128:
|
case BUILT_IN_INFD128:
|
return fold_builtin_inf (type, true);
|
return fold_builtin_inf (type, true);
|
|
|
CASE_FLT_FN (BUILT_IN_HUGE_VAL):
|
CASE_FLT_FN (BUILT_IN_HUGE_VAL):
|
return fold_builtin_inf (type, false);
|
return fold_builtin_inf (type, false);
|
|
|
CASE_FLT_FN (BUILT_IN_NAN):
|
CASE_FLT_FN (BUILT_IN_NAN):
|
case BUILT_IN_NAND32:
|
case BUILT_IN_NAND32:
|
case BUILT_IN_NAND64:
|
case BUILT_IN_NAND64:
|
case BUILT_IN_NAND128:
|
case BUILT_IN_NAND128:
|
return fold_builtin_nan (arglist, type, true);
|
return fold_builtin_nan (arglist, type, true);
|
|
|
CASE_FLT_FN (BUILT_IN_NANS):
|
CASE_FLT_FN (BUILT_IN_NANS):
|
return fold_builtin_nan (arglist, type, false);
|
return fold_builtin_nan (arglist, type, false);
|
|
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
CASE_FLT_FN (BUILT_IN_FLOOR):
|
return fold_builtin_floor (fndecl, arglist);
|
return fold_builtin_floor (fndecl, arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
CASE_FLT_FN (BUILT_IN_CEIL):
|
return fold_builtin_ceil (fndecl, arglist);
|
return fold_builtin_ceil (fndecl, arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
CASE_FLT_FN (BUILT_IN_TRUNC):
|
return fold_builtin_trunc (fndecl, arglist);
|
return fold_builtin_trunc (fndecl, arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
CASE_FLT_FN (BUILT_IN_ROUND):
|
return fold_builtin_round (fndecl, arglist);
|
return fold_builtin_round (fndecl, arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_NEARBYINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
CASE_FLT_FN (BUILT_IN_RINT):
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
return fold_trunc_transparent_mathfn (fndecl, arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LLCEIL):
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
CASE_FLT_FN (BUILT_IN_LLFLOOR):
|
CASE_FLT_FN (BUILT_IN_LROUND):
|
CASE_FLT_FN (BUILT_IN_LROUND):
|
CASE_FLT_FN (BUILT_IN_LLROUND):
|
CASE_FLT_FN (BUILT_IN_LLROUND):
|
return fold_builtin_int_roundingfn (fndecl, arglist);
|
return fold_builtin_int_roundingfn (fndecl, arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_LRINT):
|
CASE_FLT_FN (BUILT_IN_LRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
CASE_FLT_FN (BUILT_IN_LLRINT):
|
return fold_fixed_mathfn (fndecl, arglist);
|
return fold_fixed_mathfn (fndecl, arglist);
|
|
|
CASE_INT_FN (BUILT_IN_FFS):
|
CASE_INT_FN (BUILT_IN_FFS):
|
CASE_INT_FN (BUILT_IN_CLZ):
|
CASE_INT_FN (BUILT_IN_CLZ):
|
CASE_INT_FN (BUILT_IN_CTZ):
|
CASE_INT_FN (BUILT_IN_CTZ):
|
CASE_INT_FN (BUILT_IN_POPCOUNT):
|
CASE_INT_FN (BUILT_IN_POPCOUNT):
|
CASE_INT_FN (BUILT_IN_PARITY):
|
CASE_INT_FN (BUILT_IN_PARITY):
|
return fold_builtin_bitop (fndecl, arglist);
|
return fold_builtin_bitop (fndecl, arglist);
|
|
|
case BUILT_IN_MEMSET:
|
case BUILT_IN_MEMSET:
|
return fold_builtin_memset (arglist, type, ignore);
|
return fold_builtin_memset (arglist, type, ignore);
|
|
|
case BUILT_IN_MEMCPY:
|
case BUILT_IN_MEMCPY:
|
return fold_builtin_memory_op (arglist, type, ignore, /*endp=*/0);
|
return fold_builtin_memory_op (arglist, type, ignore, /*endp=*/0);
|
|
|
case BUILT_IN_MEMPCPY:
|
case BUILT_IN_MEMPCPY:
|
return fold_builtin_memory_op (arglist, type, ignore, /*endp=*/1);
|
return fold_builtin_memory_op (arglist, type, ignore, /*endp=*/1);
|
|
|
case BUILT_IN_MEMMOVE:
|
case BUILT_IN_MEMMOVE:
|
return fold_builtin_memory_op (arglist, type, ignore, /*endp=*/3);
|
return fold_builtin_memory_op (arglist, type, ignore, /*endp=*/3);
|
|
|
case BUILT_IN_BZERO:
|
case BUILT_IN_BZERO:
|
return fold_builtin_bzero (arglist, ignore);
|
return fold_builtin_bzero (arglist, ignore);
|
|
|
case BUILT_IN_BCOPY:
|
case BUILT_IN_BCOPY:
|
return fold_builtin_bcopy (arglist, ignore);
|
return fold_builtin_bcopy (arglist, ignore);
|
|
|
CASE_FLT_FN (BUILT_IN_SIGNBIT):
|
CASE_FLT_FN (BUILT_IN_SIGNBIT):
|
return fold_builtin_signbit (fndecl, arglist);
|
return fold_builtin_signbit (fndecl, arglist);
|
|
|
case BUILT_IN_ISASCII:
|
case BUILT_IN_ISASCII:
|
return fold_builtin_isascii (arglist);
|
return fold_builtin_isascii (arglist);
|
|
|
case BUILT_IN_TOASCII:
|
case BUILT_IN_TOASCII:
|
return fold_builtin_toascii (arglist);
|
return fold_builtin_toascii (arglist);
|
|
|
case BUILT_IN_ISDIGIT:
|
case BUILT_IN_ISDIGIT:
|
return fold_builtin_isdigit (arglist);
|
return fold_builtin_isdigit (arglist);
|
|
|
CASE_FLT_FN (BUILT_IN_COPYSIGN):
|
CASE_FLT_FN (BUILT_IN_COPYSIGN):
|
return fold_builtin_copysign (fndecl, arglist, type);
|
return fold_builtin_copysign (fndecl, arglist, type);
|
|
|
CASE_FLT_FN (BUILT_IN_FINITE):
|
CASE_FLT_FN (BUILT_IN_FINITE):
|
case BUILT_IN_FINITED32:
|
case BUILT_IN_FINITED32:
|
case BUILT_IN_FINITED64:
|
case BUILT_IN_FINITED64:
|
case BUILT_IN_FINITED128:
|
case BUILT_IN_FINITED128:
|
return fold_builtin_classify (fndecl, arglist, BUILT_IN_FINITE);
|
return fold_builtin_classify (fndecl, arglist, BUILT_IN_FINITE);
|
|
|
CASE_FLT_FN (BUILT_IN_ISINF):
|
CASE_FLT_FN (BUILT_IN_ISINF):
|
case BUILT_IN_ISINFD32:
|
case BUILT_IN_ISINFD32:
|
case BUILT_IN_ISINFD64:
|
case BUILT_IN_ISINFD64:
|
case BUILT_IN_ISINFD128:
|
case BUILT_IN_ISINFD128:
|
return fold_builtin_classify (fndecl, arglist, BUILT_IN_ISINF);
|
return fold_builtin_classify (fndecl, arglist, BUILT_IN_ISINF);
|
|
|
CASE_FLT_FN (BUILT_IN_ISNAN):
|
CASE_FLT_FN (BUILT_IN_ISNAN):
|
case BUILT_IN_ISNAND32:
|
case BUILT_IN_ISNAND32:
|
case BUILT_IN_ISNAND64:
|
case BUILT_IN_ISNAND64:
|
case BUILT_IN_ISNAND128:
|
case BUILT_IN_ISNAND128:
|
return fold_builtin_classify (fndecl, arglist, BUILT_IN_ISNAN);
|
return fold_builtin_classify (fndecl, arglist, BUILT_IN_ISNAN);
|
|
|
case BUILT_IN_ISGREATER:
|
case BUILT_IN_ISGREATER:
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNLE_EXPR, LE_EXPR);
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNLE_EXPR, LE_EXPR);
|
case BUILT_IN_ISGREATEREQUAL:
|
case BUILT_IN_ISGREATEREQUAL:
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNLT_EXPR, LT_EXPR);
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNLT_EXPR, LT_EXPR);
|
case BUILT_IN_ISLESS:
|
case BUILT_IN_ISLESS:
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNGE_EXPR, GE_EXPR);
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNGE_EXPR, GE_EXPR);
|
case BUILT_IN_ISLESSEQUAL:
|
case BUILT_IN_ISLESSEQUAL:
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNGT_EXPR, GT_EXPR);
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNGT_EXPR, GT_EXPR);
|
case BUILT_IN_ISLESSGREATER:
|
case BUILT_IN_ISLESSGREATER:
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNEQ_EXPR, EQ_EXPR);
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNEQ_EXPR, EQ_EXPR);
|
case BUILT_IN_ISUNORDERED:
|
case BUILT_IN_ISUNORDERED:
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNORDERED_EXPR,
|
return fold_builtin_unordered_cmp (fndecl, arglist, UNORDERED_EXPR,
|
NOP_EXPR);
|
NOP_EXPR);
|
|
|
/* We do the folding for va_start in the expander. */
|
/* We do the folding for va_start in the expander. */
|
case BUILT_IN_VA_START:
|
case BUILT_IN_VA_START:
|
break;
|
break;
|
|
|
case BUILT_IN_OBJECT_SIZE:
|
case BUILT_IN_OBJECT_SIZE:
|
return fold_builtin_object_size (arglist);
|
return fold_builtin_object_size (arglist);
|
case BUILT_IN_MEMCPY_CHK:
|
case BUILT_IN_MEMCPY_CHK:
|
case BUILT_IN_MEMPCPY_CHK:
|
case BUILT_IN_MEMPCPY_CHK:
|
case BUILT_IN_MEMMOVE_CHK:
|
case BUILT_IN_MEMMOVE_CHK:
|
case BUILT_IN_MEMSET_CHK:
|
case BUILT_IN_MEMSET_CHK:
|
return fold_builtin_memory_chk (fndecl, arglist, NULL_TREE, ignore,
|
return fold_builtin_memory_chk (fndecl, arglist, NULL_TREE, ignore,
|
DECL_FUNCTION_CODE (fndecl));
|
DECL_FUNCTION_CODE (fndecl));
|
case BUILT_IN_STRCPY_CHK:
|
case BUILT_IN_STRCPY_CHK:
|
case BUILT_IN_STPCPY_CHK:
|
case BUILT_IN_STPCPY_CHK:
|
return fold_builtin_stxcpy_chk (fndecl, arglist, NULL_TREE, ignore,
|
return fold_builtin_stxcpy_chk (fndecl, arglist, NULL_TREE, ignore,
|
DECL_FUNCTION_CODE (fndecl));
|
DECL_FUNCTION_CODE (fndecl));
|
case BUILT_IN_STRNCPY_CHK:
|
case BUILT_IN_STRNCPY_CHK:
|
return fold_builtin_strncpy_chk (arglist, NULL_TREE);
|
return fold_builtin_strncpy_chk (arglist, NULL_TREE);
|
case BUILT_IN_STRCAT_CHK:
|
case BUILT_IN_STRCAT_CHK:
|
return fold_builtin_strcat_chk (fndecl, arglist);
|
return fold_builtin_strcat_chk (fndecl, arglist);
|
case BUILT_IN_STRNCAT_CHK:
|
case BUILT_IN_STRNCAT_CHK:
|
return fold_builtin_strncat_chk (fndecl, arglist);
|
return fold_builtin_strncat_chk (fndecl, arglist);
|
case BUILT_IN_SPRINTF_CHK:
|
case BUILT_IN_SPRINTF_CHK:
|
case BUILT_IN_VSPRINTF_CHK:
|
case BUILT_IN_VSPRINTF_CHK:
|
return fold_builtin_sprintf_chk (arglist, DECL_FUNCTION_CODE (fndecl));
|
return fold_builtin_sprintf_chk (arglist, DECL_FUNCTION_CODE (fndecl));
|
case BUILT_IN_SNPRINTF_CHK:
|
case BUILT_IN_SNPRINTF_CHK:
|
case BUILT_IN_VSNPRINTF_CHK:
|
case BUILT_IN_VSNPRINTF_CHK:
|
return fold_builtin_snprintf_chk (arglist, NULL_TREE,
|
return fold_builtin_snprintf_chk (arglist, NULL_TREE,
|
DECL_FUNCTION_CODE (fndecl));
|
DECL_FUNCTION_CODE (fndecl));
|
|
|
case BUILT_IN_PRINTF:
|
case BUILT_IN_PRINTF:
|
case BUILT_IN_PRINTF_UNLOCKED:
|
case BUILT_IN_PRINTF_UNLOCKED:
|
case BUILT_IN_VPRINTF:
|
case BUILT_IN_VPRINTF:
|
case BUILT_IN_PRINTF_CHK:
|
case BUILT_IN_PRINTF_CHK:
|
case BUILT_IN_VPRINTF_CHK:
|
case BUILT_IN_VPRINTF_CHK:
|
return fold_builtin_printf (fndecl, arglist, ignore,
|
return fold_builtin_printf (fndecl, arglist, ignore,
|
DECL_FUNCTION_CODE (fndecl));
|
DECL_FUNCTION_CODE (fndecl));
|
|
|
case BUILT_IN_FPRINTF:
|
case BUILT_IN_FPRINTF:
|
case BUILT_IN_FPRINTF_UNLOCKED:
|
case BUILT_IN_FPRINTF_UNLOCKED:
|
case BUILT_IN_VFPRINTF:
|
case BUILT_IN_VFPRINTF:
|
case BUILT_IN_FPRINTF_CHK:
|
case BUILT_IN_FPRINTF_CHK:
|
case BUILT_IN_VFPRINTF_CHK:
|
case BUILT_IN_VFPRINTF_CHK:
|
return fold_builtin_fprintf (fndecl, arglist, ignore,
|
return fold_builtin_fprintf (fndecl, arglist, ignore,
|
DECL_FUNCTION_CODE (fndecl));
|
DECL_FUNCTION_CODE (fndecl));
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* A wrapper function for builtin folding that prevents warnings for
|
/* A wrapper function for builtin folding that prevents warnings for
|
"statement without effect" and the like, caused by removing the
|
"statement without effect" and the like, caused by removing the
|
call node earlier than the warning is generated. */
|
call node earlier than the warning is generated. */
|
|
|
tree
|
tree
|
fold_builtin (tree fndecl, tree arglist, bool ignore)
|
fold_builtin (tree fndecl, tree arglist, bool ignore)
|
{
|
{
|
tree exp = fold_builtin_1 (fndecl, arglist, ignore);
|
tree exp = fold_builtin_1 (fndecl, arglist, ignore);
|
if (exp)
|
if (exp)
|
{
|
{
|
exp = build1 (NOP_EXPR, TREE_TYPE (exp), exp);
|
exp = build1 (NOP_EXPR, TREE_TYPE (exp), exp);
|
TREE_NO_WARNING (exp) = 1;
|
TREE_NO_WARNING (exp) = 1;
|
}
|
}
|
|
|
return exp;
|
return exp;
|
}
|
}
|
|
|
/* Conveniently construct a function call expression. */
|
/* Conveniently construct a function call expression. */
|
|
|
tree
|
tree
|
build_function_call_expr (tree fn, tree arglist)
|
build_function_call_expr (tree fn, tree arglist)
|
{
|
{
|
tree call_expr;
|
tree call_expr;
|
|
|
call_expr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (fn)), fn);
|
call_expr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (fn)), fn);
|
return fold_build3 (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
|
return fold_build3 (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
|
call_expr, arglist, NULL_TREE);
|
call_expr, arglist, NULL_TREE);
|
}
|
}
|
|
|
/* This function validates the types of a function call argument list
|
/* This function validates the types of a function call argument list
|
represented as a tree chain of parameters against a specified list
|
represented as a tree chain of parameters against a specified list
|
of tree_codes. If the last specifier is a 0, that represents an
|
of tree_codes. If the last specifier is a 0, that represents an
|
ellipses, otherwise the last specifier must be a VOID_TYPE. */
|
ellipses, otherwise the last specifier must be a VOID_TYPE. */
|
|
|
static int
|
static int
|
validate_arglist (tree arglist, ...)
|
validate_arglist (tree arglist, ...)
|
{
|
{
|
enum tree_code code;
|
enum tree_code code;
|
int res = 0;
|
int res = 0;
|
va_list ap;
|
va_list ap;
|
|
|
va_start (ap, arglist);
|
va_start (ap, arglist);
|
|
|
do
|
do
|
{
|
{
|
code = va_arg (ap, enum tree_code);
|
code = va_arg (ap, enum tree_code);
|
switch (code)
|
switch (code)
|
{
|
{
|
case 0:
|
case 0:
|
/* This signifies an ellipses, any further arguments are all ok. */
|
/* This signifies an ellipses, any further arguments are all ok. */
|
res = 1;
|
res = 1;
|
goto end;
|
goto end;
|
case VOID_TYPE:
|
case VOID_TYPE:
|
/* This signifies an endlink, if no arguments remain, return
|
/* This signifies an endlink, if no arguments remain, return
|
true, otherwise return false. */
|
true, otherwise return false. */
|
res = arglist == 0;
|
res = arglist == 0;
|
goto end;
|
goto end;
|
default:
|
default:
|
/* If no parameters remain or the parameter's code does not
|
/* If no parameters remain or the parameter's code does not
|
match the specified code, return false. Otherwise continue
|
match the specified code, return false. Otherwise continue
|
checking any remaining arguments. */
|
checking any remaining arguments. */
|
if (arglist == 0)
|
if (arglist == 0)
|
goto end;
|
goto end;
|
if (code == POINTER_TYPE)
|
if (code == POINTER_TYPE)
|
{
|
{
|
if (! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist))))
|
if (! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist))))
|
goto end;
|
goto end;
|
}
|
}
|
else if (code != TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))))
|
else if (code != TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))))
|
goto end;
|
goto end;
|
break;
|
break;
|
}
|
}
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
}
|
}
|
while (1);
|
while (1);
|
|
|
/* We need gotos here since we can only have one VA_CLOSE in a
|
/* We need gotos here since we can only have one VA_CLOSE in a
|
function. */
|
function. */
|
end: ;
|
end: ;
|
va_end (ap);
|
va_end (ap);
|
|
|
return res;
|
return res;
|
}
|
}
|
|
|
/* Default target-specific builtin expander that does nothing. */
|
/* Default target-specific builtin expander that does nothing. */
|
|
|
rtx
|
rtx
|
default_expand_builtin (tree exp ATTRIBUTE_UNUSED,
|
default_expand_builtin (tree exp ATTRIBUTE_UNUSED,
|
rtx target ATTRIBUTE_UNUSED,
|
rtx target ATTRIBUTE_UNUSED,
|
rtx subtarget ATTRIBUTE_UNUSED,
|
rtx subtarget ATTRIBUTE_UNUSED,
|
enum machine_mode mode ATTRIBUTE_UNUSED,
|
enum machine_mode mode ATTRIBUTE_UNUSED,
|
int ignore ATTRIBUTE_UNUSED)
|
int ignore ATTRIBUTE_UNUSED)
|
{
|
{
|
return NULL_RTX;
|
return NULL_RTX;
|
}
|
}
|
|
|
/* Returns true is EXP represents data that would potentially reside
|
/* Returns true is EXP represents data that would potentially reside
|
in a readonly section. */
|
in a readonly section. */
|
|
|
static bool
|
static bool
|
readonly_data_expr (tree exp)
|
readonly_data_expr (tree exp)
|
{
|
{
|
STRIP_NOPS (exp);
|
STRIP_NOPS (exp);
|
|
|
if (TREE_CODE (exp) != ADDR_EXPR)
|
if (TREE_CODE (exp) != ADDR_EXPR)
|
return false;
|
return false;
|
|
|
exp = get_base_address (TREE_OPERAND (exp, 0));
|
exp = get_base_address (TREE_OPERAND (exp, 0));
|
if (!exp)
|
if (!exp)
|
return false;
|
return false;
|
|
|
/* Make sure we call decl_readonly_section only for trees it
|
/* Make sure we call decl_readonly_section only for trees it
|
can handle (since it returns true for everything it doesn't
|
can handle (since it returns true for everything it doesn't
|
understand). */
|
understand). */
|
if (TREE_CODE (exp) == STRING_CST
|
if (TREE_CODE (exp) == STRING_CST
|
|| TREE_CODE (exp) == CONSTRUCTOR
|
|| TREE_CODE (exp) == CONSTRUCTOR
|
|| (TREE_CODE (exp) == VAR_DECL && TREE_STATIC (exp)))
|
|| (TREE_CODE (exp) == VAR_DECL && TREE_STATIC (exp)))
|
return decl_readonly_section (exp, 0);
|
return decl_readonly_section (exp, 0);
|
else
|
else
|
return false;
|
return false;
|
}
|
}
|
|
|
/* Simplify a call to the strstr builtin.
|
/* Simplify a call to the strstr builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strstr (tree arglist, tree type)
|
fold_builtin_strstr (tree arglist, tree type)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree fn;
|
tree fn;
|
const char *p1, *p2;
|
const char *p1, *p2;
|
|
|
p2 = c_getstr (s2);
|
p2 = c_getstr (s2);
|
if (p2 == NULL)
|
if (p2 == NULL)
|
return 0;
|
return 0;
|
|
|
p1 = c_getstr (s1);
|
p1 = c_getstr (s1);
|
if (p1 != NULL)
|
if (p1 != NULL)
|
{
|
{
|
const char *r = strstr (p1, p2);
|
const char *r = strstr (p1, p2);
|
tree tem;
|
tree tem;
|
|
|
if (r == NULL)
|
if (r == NULL)
|
return build_int_cst (TREE_TYPE (s1), 0);
|
return build_int_cst (TREE_TYPE (s1), 0);
|
|
|
/* Return an offset into the constant string argument. */
|
/* Return an offset into the constant string argument. */
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
return fold_convert (type, tem);
|
return fold_convert (type, tem);
|
}
|
}
|
|
|
/* The argument is const char *, and the result is char *, so we need
|
/* The argument is const char *, and the result is char *, so we need
|
a type conversion here to avoid a warning. */
|
a type conversion here to avoid a warning. */
|
if (p2[0] == '\0')
|
if (p2[0] == '\0')
|
return fold_convert (type, s1);
|
return fold_convert (type, s1);
|
|
|
if (p2[1] != '\0')
|
if (p2[1] != '\0')
|
return 0;
|
return 0;
|
|
|
fn = implicit_built_in_decls[BUILT_IN_STRCHR];
|
fn = implicit_built_in_decls[BUILT_IN_STRCHR];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
/* New argument list transforming strstr(s1, s2) to
|
/* New argument list transforming strstr(s1, s2) to
|
strchr(s1, s2[0]). */
|
strchr(s1, s2[0]). */
|
arglist = build_tree_list (NULL_TREE,
|
arglist = build_tree_list (NULL_TREE,
|
build_int_cst (NULL_TREE, p2[0]));
|
build_int_cst (NULL_TREE, p2[0]));
|
arglist = tree_cons (NULL_TREE, s1, arglist);
|
arglist = tree_cons (NULL_TREE, s1, arglist);
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strchr builtin.
|
/* Simplify a call to the strchr builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strchr (tree arglist, tree type)
|
fold_builtin_strchr (tree arglist, tree type)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
const char *p1;
|
const char *p1;
|
|
|
if (TREE_CODE (s2) != INTEGER_CST)
|
if (TREE_CODE (s2) != INTEGER_CST)
|
return 0;
|
return 0;
|
|
|
p1 = c_getstr (s1);
|
p1 = c_getstr (s1);
|
if (p1 != NULL)
|
if (p1 != NULL)
|
{
|
{
|
char c;
|
char c;
|
const char *r;
|
const char *r;
|
tree tem;
|
tree tem;
|
|
|
if (target_char_cast (s2, &c))
|
if (target_char_cast (s2, &c))
|
return 0;
|
return 0;
|
|
|
r = strchr (p1, c);
|
r = strchr (p1, c);
|
|
|
if (r == NULL)
|
if (r == NULL)
|
return build_int_cst (TREE_TYPE (s1), 0);
|
return build_int_cst (TREE_TYPE (s1), 0);
|
|
|
/* Return an offset into the constant string argument. */
|
/* Return an offset into the constant string argument. */
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
return fold_convert (type, tem);
|
return fold_convert (type, tem);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strrchr builtin.
|
/* Simplify a call to the strrchr builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strrchr (tree arglist, tree type)
|
fold_builtin_strrchr (tree arglist, tree type)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree fn;
|
tree fn;
|
const char *p1;
|
const char *p1;
|
|
|
if (TREE_CODE (s2) != INTEGER_CST)
|
if (TREE_CODE (s2) != INTEGER_CST)
|
return 0;
|
return 0;
|
|
|
p1 = c_getstr (s1);
|
p1 = c_getstr (s1);
|
if (p1 != NULL)
|
if (p1 != NULL)
|
{
|
{
|
char c;
|
char c;
|
const char *r;
|
const char *r;
|
tree tem;
|
tree tem;
|
|
|
if (target_char_cast (s2, &c))
|
if (target_char_cast (s2, &c))
|
return 0;
|
return 0;
|
|
|
r = strrchr (p1, c);
|
r = strrchr (p1, c);
|
|
|
if (r == NULL)
|
if (r == NULL)
|
return build_int_cst (TREE_TYPE (s1), 0);
|
return build_int_cst (TREE_TYPE (s1), 0);
|
|
|
/* Return an offset into the constant string argument. */
|
/* Return an offset into the constant string argument. */
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
return fold_convert (type, tem);
|
return fold_convert (type, tem);
|
}
|
}
|
|
|
if (! integer_zerop (s2))
|
if (! integer_zerop (s2))
|
return 0;
|
return 0;
|
|
|
fn = implicit_built_in_decls[BUILT_IN_STRCHR];
|
fn = implicit_built_in_decls[BUILT_IN_STRCHR];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
/* Transform strrchr(s1, '\0') to strchr(s1, '\0'). */
|
/* Transform strrchr(s1, '\0') to strchr(s1, '\0'). */
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strpbrk builtin.
|
/* Simplify a call to the strpbrk builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strpbrk (tree arglist, tree type)
|
fold_builtin_strpbrk (tree arglist, tree type)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree fn;
|
tree fn;
|
const char *p1, *p2;
|
const char *p1, *p2;
|
|
|
p2 = c_getstr (s2);
|
p2 = c_getstr (s2);
|
if (p2 == NULL)
|
if (p2 == NULL)
|
return 0;
|
return 0;
|
|
|
p1 = c_getstr (s1);
|
p1 = c_getstr (s1);
|
if (p1 != NULL)
|
if (p1 != NULL)
|
{
|
{
|
const char *r = strpbrk (p1, p2);
|
const char *r = strpbrk (p1, p2);
|
tree tem;
|
tree tem;
|
|
|
if (r == NULL)
|
if (r == NULL)
|
return build_int_cst (TREE_TYPE (s1), 0);
|
return build_int_cst (TREE_TYPE (s1), 0);
|
|
|
/* Return an offset into the constant string argument. */
|
/* Return an offset into the constant string argument. */
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
tem = fold_build2 (PLUS_EXPR, TREE_TYPE (s1),
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
s1, build_int_cst (TREE_TYPE (s1), r - p1));
|
return fold_convert (type, tem);
|
return fold_convert (type, tem);
|
}
|
}
|
|
|
if (p2[0] == '\0')
|
if (p2[0] == '\0')
|
/* strpbrk(x, "") == NULL.
|
/* strpbrk(x, "") == NULL.
|
Evaluate and ignore s1 in case it had side-effects. */
|
Evaluate and ignore s1 in case it had side-effects. */
|
return omit_one_operand (TREE_TYPE (s1), integer_zero_node, s1);
|
return omit_one_operand (TREE_TYPE (s1), integer_zero_node, s1);
|
|
|
if (p2[1] != '\0')
|
if (p2[1] != '\0')
|
return 0; /* Really call strpbrk. */
|
return 0; /* Really call strpbrk. */
|
|
|
fn = implicit_built_in_decls[BUILT_IN_STRCHR];
|
fn = implicit_built_in_decls[BUILT_IN_STRCHR];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
/* New argument list transforming strpbrk(s1, s2) to
|
/* New argument list transforming strpbrk(s1, s2) to
|
strchr(s1, s2[0]). */
|
strchr(s1, s2[0]). */
|
arglist = build_tree_list (NULL_TREE,
|
arglist = build_tree_list (NULL_TREE,
|
build_int_cst (NULL_TREE, p2[0]));
|
build_int_cst (NULL_TREE, p2[0]));
|
arglist = tree_cons (NULL_TREE, s1, arglist);
|
arglist = tree_cons (NULL_TREE, s1, arglist);
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strcat builtin.
|
/* Simplify a call to the strcat builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strcat (tree arglist)
|
fold_builtin_strcat (tree arglist)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dst = TREE_VALUE (arglist),
|
tree dst = TREE_VALUE (arglist),
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
const char *p = c_getstr (src);
|
const char *p = c_getstr (src);
|
|
|
/* If the string length is zero, return the dst parameter. */
|
/* If the string length is zero, return the dst parameter. */
|
if (p && *p == '\0')
|
if (p && *p == '\0')
|
return dst;
|
return dst;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strncat builtin.
|
/* Simplify a call to the strncat builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strncat (tree arglist)
|
fold_builtin_strncat (tree arglist)
|
{
|
{
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree dst = TREE_VALUE (arglist);
|
tree dst = TREE_VALUE (arglist);
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree src = TREE_VALUE (TREE_CHAIN (arglist));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
const char *p = c_getstr (src);
|
const char *p = c_getstr (src);
|
|
|
/* If the requested length is zero, or the src parameter string
|
/* If the requested length is zero, or the src parameter string
|
length is zero, return the dst parameter. */
|
length is zero, return the dst parameter. */
|
if (integer_zerop (len) || (p && *p == '\0'))
|
if (integer_zerop (len) || (p && *p == '\0'))
|
return omit_two_operands (TREE_TYPE (dst), dst, src, len);
|
return omit_two_operands (TREE_TYPE (dst), dst, src, len);
|
|
|
/* If the requested len is greater than or equal to the string
|
/* If the requested len is greater than or equal to the string
|
length, call strcat. */
|
length, call strcat. */
|
if (TREE_CODE (len) == INTEGER_CST && p
|
if (TREE_CODE (len) == INTEGER_CST && p
|
&& compare_tree_int (len, strlen (p)) >= 0)
|
&& compare_tree_int (len, strlen (p)) >= 0)
|
{
|
{
|
tree newarglist
|
tree newarglist
|
= tree_cons (NULL_TREE, dst, build_tree_list (NULL_TREE, src));
|
= tree_cons (NULL_TREE, dst, build_tree_list (NULL_TREE, src));
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCAT];
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCAT];
|
|
|
/* If the replacement _DECL isn't initialized, don't do the
|
/* If the replacement _DECL isn't initialized, don't do the
|
transformation. */
|
transformation. */
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, newarglist);
|
return build_function_call_expr (fn, newarglist);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strspn builtin.
|
/* Simplify a call to the strspn builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strspn (tree arglist)
|
fold_builtin_strspn (tree arglist)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
const char *p1 = c_getstr (s1), *p2 = c_getstr (s2);
|
const char *p1 = c_getstr (s1), *p2 = c_getstr (s2);
|
|
|
/* If both arguments are constants, evaluate at compile-time. */
|
/* If both arguments are constants, evaluate at compile-time. */
|
if (p1 && p2)
|
if (p1 && p2)
|
{
|
{
|
const size_t r = strspn (p1, p2);
|
const size_t r = strspn (p1, p2);
|
return size_int (r);
|
return size_int (r);
|
}
|
}
|
|
|
/* If either argument is "", return 0. */
|
/* If either argument is "", return 0. */
|
if ((p1 && *p1 == '\0') || (p2 && *p2 == '\0'))
|
if ((p1 && *p1 == '\0') || (p2 && *p2 == '\0'))
|
/* Evaluate and ignore both arguments in case either one has
|
/* Evaluate and ignore both arguments in case either one has
|
side-effects. */
|
side-effects. */
|
return omit_two_operands (integer_type_node, integer_zero_node,
|
return omit_two_operands (integer_type_node, integer_zero_node,
|
s1, s2);
|
s1, s2);
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Simplify a call to the strcspn builtin.
|
/* Simplify a call to the strcspn builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree.
|
simplified form of the call as a tree.
|
|
|
The simplified form may be a constant or other expression which
|
The simplified form may be a constant or other expression which
|
computes the same value, but in a more efficient manner (including
|
computes the same value, but in a more efficient manner (including
|
calls to other builtin functions).
|
calls to other builtin functions).
|
|
|
The call may contain arguments which need to be evaluated, but
|
The call may contain arguments which need to be evaluated, but
|
which are not useful to determine the result of the call. In
|
which are not useful to determine the result of the call. In
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
this case we return a chain of COMPOUND_EXPRs. The LHS of each
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPR will be an argument which must be evaluated.
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPRs are chained through their RHS. The RHS of the last
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
COMPOUND_EXPR in the chain will contain the tree for the simplified
|
form of the builtin function call. */
|
form of the builtin function call. */
|
|
|
static tree
|
static tree
|
fold_builtin_strcspn (tree arglist)
|
fold_builtin_strcspn (tree arglist)
|
{
|
{
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
|
const char *p1 = c_getstr (s1), *p2 = c_getstr (s2);
|
const char *p1 = c_getstr (s1), *p2 = c_getstr (s2);
|
|
|
/* If both arguments are constants, evaluate at compile-time. */
|
/* If both arguments are constants, evaluate at compile-time. */
|
if (p1 && p2)
|
if (p1 && p2)
|
{
|
{
|
const size_t r = strcspn (p1, p2);
|
const size_t r = strcspn (p1, p2);
|
return size_int (r);
|
return size_int (r);
|
}
|
}
|
|
|
/* If the first argument is "", return 0. */
|
/* If the first argument is "", return 0. */
|
if (p1 && *p1 == '\0')
|
if (p1 && *p1 == '\0')
|
{
|
{
|
/* Evaluate and ignore argument s2 in case it has
|
/* Evaluate and ignore argument s2 in case it has
|
side-effects. */
|
side-effects. */
|
return omit_one_operand (integer_type_node,
|
return omit_one_operand (integer_type_node,
|
integer_zero_node, s2);
|
integer_zero_node, s2);
|
}
|
}
|
|
|
/* If the second argument is "", return __builtin_strlen(s1). */
|
/* If the second argument is "", return __builtin_strlen(s1). */
|
if (p2 && *p2 == '\0')
|
if (p2 && *p2 == '\0')
|
{
|
{
|
tree newarglist = build_tree_list (NULL_TREE, s1),
|
tree newarglist = build_tree_list (NULL_TREE, s1),
|
fn = implicit_built_in_decls[BUILT_IN_STRLEN];
|
fn = implicit_built_in_decls[BUILT_IN_STRLEN];
|
|
|
/* If the replacement _DECL isn't initialized, don't do the
|
/* If the replacement _DECL isn't initialized, don't do the
|
transformation. */
|
transformation. */
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, newarglist);
|
return build_function_call_expr (fn, newarglist);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to the fputs builtin. IGNORE is true if the value returned
|
/* Fold a call to the fputs builtin. IGNORE is true if the value returned
|
by the builtin will be ignored. UNLOCKED is true is true if this
|
by the builtin will be ignored. UNLOCKED is true is true if this
|
actually a call to fputs_unlocked. If LEN in non-NULL, it represents
|
actually a call to fputs_unlocked. If LEN in non-NULL, it represents
|
the known length of the string. Return NULL_TREE if no simplification
|
the known length of the string. Return NULL_TREE if no simplification
|
was possible. */
|
was possible. */
|
|
|
tree
|
tree
|
fold_builtin_fputs (tree arglist, bool ignore, bool unlocked, tree len)
|
fold_builtin_fputs (tree arglist, bool ignore, bool unlocked, tree len)
|
{
|
{
|
tree fn;
|
tree fn;
|
/* If we're using an unlocked function, assume the other unlocked
|
/* If we're using an unlocked function, assume the other unlocked
|
functions exist explicitly. */
|
functions exist explicitly. */
|
tree const fn_fputc = unlocked ? built_in_decls[BUILT_IN_FPUTC_UNLOCKED]
|
tree const fn_fputc = unlocked ? built_in_decls[BUILT_IN_FPUTC_UNLOCKED]
|
: implicit_built_in_decls[BUILT_IN_FPUTC];
|
: implicit_built_in_decls[BUILT_IN_FPUTC];
|
tree const fn_fwrite = unlocked ? built_in_decls[BUILT_IN_FWRITE_UNLOCKED]
|
tree const fn_fwrite = unlocked ? built_in_decls[BUILT_IN_FWRITE_UNLOCKED]
|
: implicit_built_in_decls[BUILT_IN_FWRITE];
|
: implicit_built_in_decls[BUILT_IN_FWRITE];
|
|
|
/* If the return value is used, don't do the transformation. */
|
/* If the return value is used, don't do the transformation. */
|
if (!ignore)
|
if (!ignore)
|
return 0;
|
return 0;
|
|
|
/* Verify the arguments in the original call. */
|
/* Verify the arguments in the original call. */
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
if (! len)
|
if (! len)
|
len = c_strlen (TREE_VALUE (arglist), 0);
|
len = c_strlen (TREE_VALUE (arglist), 0);
|
|
|
/* Get the length of the string passed to fputs. If the length
|
/* Get the length of the string passed to fputs. If the length
|
can't be determined, punt. */
|
can't be determined, punt. */
|
if (!len
|
if (!len
|
|| TREE_CODE (len) != INTEGER_CST)
|
|| TREE_CODE (len) != INTEGER_CST)
|
return 0;
|
return 0;
|
|
|
switch (compare_tree_int (len, 1))
|
switch (compare_tree_int (len, 1))
|
{
|
{
|
case -1: /* length is 0, delete the call entirely . */
|
case -1: /* length is 0, delete the call entirely . */
|
return omit_one_operand (integer_type_node, integer_zero_node,
|
return omit_one_operand (integer_type_node, integer_zero_node,
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
|
|
case 0: /* length is 1, call fputc. */
|
case 0: /* length is 1, call fputc. */
|
{
|
{
|
const char *p = c_getstr (TREE_VALUE (arglist));
|
const char *p = c_getstr (TREE_VALUE (arglist));
|
|
|
if (p != NULL)
|
if (p != NULL)
|
{
|
{
|
/* New argument list transforming fputs(string, stream) to
|
/* New argument list transforming fputs(string, stream) to
|
fputc(string[0], stream). */
|
fputc(string[0], stream). */
|
arglist = build_tree_list (NULL_TREE,
|
arglist = build_tree_list (NULL_TREE,
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
arglist = tree_cons (NULL_TREE,
|
arglist = tree_cons (NULL_TREE,
|
build_int_cst (NULL_TREE, p[0]),
|
build_int_cst (NULL_TREE, p[0]),
|
arglist);
|
arglist);
|
fn = fn_fputc;
|
fn = fn_fputc;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
/* FALLTHROUGH */
|
/* FALLTHROUGH */
|
case 1: /* length is greater than 1, call fwrite. */
|
case 1: /* length is greater than 1, call fwrite. */
|
{
|
{
|
tree string_arg;
|
tree string_arg;
|
|
|
/* If optimizing for size keep fputs. */
|
/* If optimizing for size keep fputs. */
|
if (optimize_size)
|
if (optimize_size)
|
return 0;
|
return 0;
|
string_arg = TREE_VALUE (arglist);
|
string_arg = TREE_VALUE (arglist);
|
/* New argument list transforming fputs(string, stream) to
|
/* New argument list transforming fputs(string, stream) to
|
fwrite(string, 1, len, stream). */
|
fwrite(string, 1, len, stream). */
|
arglist = build_tree_list (NULL_TREE,
|
arglist = build_tree_list (NULL_TREE,
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
TREE_VALUE (TREE_CHAIN (arglist)));
|
arglist = tree_cons (NULL_TREE, len, arglist);
|
arglist = tree_cons (NULL_TREE, len, arglist);
|
arglist = tree_cons (NULL_TREE, size_one_node, arglist);
|
arglist = tree_cons (NULL_TREE, size_one_node, arglist);
|
arglist = tree_cons (NULL_TREE, string_arg, arglist);
|
arglist = tree_cons (NULL_TREE, string_arg, arglist);
|
fn = fn_fwrite;
|
fn = fn_fwrite;
|
break;
|
break;
|
}
|
}
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
/* If the replacement _DECL isn't initialized, don't do the
|
/* If the replacement _DECL isn't initialized, don't do the
|
transformation. */
|
transformation. */
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
/* These optimizations are only performed when the result is ignored,
|
/* These optimizations are only performed when the result is ignored,
|
hence there's no need to cast the result to integer_type_node. */
|
hence there's no need to cast the result to integer_type_node. */
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold the new_arg's arguments (ARGLIST). Returns true if there was an error
|
/* Fold the new_arg's arguments (ARGLIST). Returns true if there was an error
|
produced. False otherwise. This is done so that we don't output the error
|
produced. False otherwise. This is done so that we don't output the error
|
or warning twice or three times. */
|
or warning twice or three times. */
|
bool
|
bool
|
fold_builtin_next_arg (tree arglist)
|
fold_builtin_next_arg (tree arglist)
|
{
|
{
|
tree fntype = TREE_TYPE (current_function_decl);
|
tree fntype = TREE_TYPE (current_function_decl);
|
|
|
if (TYPE_ARG_TYPES (fntype) == 0
|
if (TYPE_ARG_TYPES (fntype) == 0
|
|| (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
|
|| (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
|
== void_type_node))
|
== void_type_node))
|
{
|
{
|
error ("%<va_start%> used in function with fixed args");
|
error ("%<va_start%> used in function with fixed args");
|
return true;
|
return true;
|
}
|
}
|
else if (!arglist)
|
else if (!arglist)
|
{
|
{
|
/* Evidently an out of date version of <stdarg.h>; can't validate
|
/* Evidently an out of date version of <stdarg.h>; can't validate
|
va_start's second argument, but can still work as intended. */
|
va_start's second argument, but can still work as intended. */
|
warning (0, "%<__builtin_next_arg%> called without an argument");
|
warning (0, "%<__builtin_next_arg%> called without an argument");
|
return true;
|
return true;
|
}
|
}
|
/* We use __builtin_va_start (ap, 0, 0) or __builtin_next_arg (0, 0)
|
/* We use __builtin_va_start (ap, 0, 0) or __builtin_next_arg (0, 0)
|
when we checked the arguments and if needed issued a warning. */
|
when we checked the arguments and if needed issued a warning. */
|
else if (!TREE_CHAIN (arglist)
|
else if (!TREE_CHAIN (arglist)
|
|| !integer_zerop (TREE_VALUE (arglist))
|
|| !integer_zerop (TREE_VALUE (arglist))
|
|| !integer_zerop (TREE_VALUE (TREE_CHAIN (arglist)))
|
|| !integer_zerop (TREE_VALUE (TREE_CHAIN (arglist)))
|
|| TREE_CHAIN (TREE_CHAIN (arglist)))
|
|| TREE_CHAIN (TREE_CHAIN (arglist)))
|
{
|
{
|
tree last_parm = tree_last (DECL_ARGUMENTS (current_function_decl));
|
tree last_parm = tree_last (DECL_ARGUMENTS (current_function_decl));
|
tree arg = TREE_VALUE (arglist);
|
tree arg = TREE_VALUE (arglist);
|
|
|
if (TREE_CHAIN (arglist))
|
if (TREE_CHAIN (arglist))
|
{
|
{
|
error ("%<va_start%> used with too many arguments");
|
error ("%<va_start%> used with too many arguments");
|
return true;
|
return true;
|
}
|
}
|
|
|
/* Strip off all nops for the sake of the comparison. This
|
/* Strip off all nops for the sake of the comparison. This
|
is not quite the same as STRIP_NOPS. It does more.
|
is not quite the same as STRIP_NOPS. It does more.
|
We must also strip off INDIRECT_EXPR for C++ reference
|
We must also strip off INDIRECT_EXPR for C++ reference
|
parameters. */
|
parameters. */
|
while (TREE_CODE (arg) == NOP_EXPR
|
while (TREE_CODE (arg) == NOP_EXPR
|
|| TREE_CODE (arg) == CONVERT_EXPR
|
|| TREE_CODE (arg) == CONVERT_EXPR
|
|| TREE_CODE (arg) == NON_LVALUE_EXPR
|
|| TREE_CODE (arg) == NON_LVALUE_EXPR
|
|| TREE_CODE (arg) == INDIRECT_REF)
|
|| TREE_CODE (arg) == INDIRECT_REF)
|
arg = TREE_OPERAND (arg, 0);
|
arg = TREE_OPERAND (arg, 0);
|
if (arg != last_parm)
|
if (arg != last_parm)
|
{
|
{
|
/* FIXME: Sometimes with the tree optimizers we can get the
|
/* FIXME: Sometimes with the tree optimizers we can get the
|
not the last argument even though the user used the last
|
not the last argument even though the user used the last
|
argument. We just warn and set the arg to be the last
|
argument. We just warn and set the arg to be the last
|
argument so that we will get wrong-code because of
|
argument so that we will get wrong-code because of
|
it. */
|
it. */
|
warning (0, "second parameter of %<va_start%> not last named argument");
|
warning (0, "second parameter of %<va_start%> not last named argument");
|
}
|
}
|
/* We want to verify the second parameter just once before the tree
|
/* We want to verify the second parameter just once before the tree
|
optimizers are run and then avoid keeping it in the tree,
|
optimizers are run and then avoid keeping it in the tree,
|
as otherwise we could warn even for correct code like:
|
as otherwise we could warn even for correct code like:
|
void foo (int i, ...)
|
void foo (int i, ...)
|
{ va_list ap; i++; va_start (ap, i); va_end (ap); } */
|
{ va_list ap; i++; va_start (ap, i); va_end (ap); } */
|
TREE_VALUE (arglist) = integer_zero_node;
|
TREE_VALUE (arglist) = integer_zero_node;
|
TREE_CHAIN (arglist) = build_tree_list (NULL, integer_zero_node);
|
TREE_CHAIN (arglist) = build_tree_list (NULL, integer_zero_node);
|
}
|
}
|
return false;
|
return false;
|
}
|
}
|
|
|
|
|
/* Simplify a call to the sprintf builtin.
|
/* Simplify a call to the sprintf builtin.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree. If IGNORED is true, it means that
|
simplified form of the call as a tree. If IGNORED is true, it means that
|
the caller does not use the returned value of the function. */
|
the caller does not use the returned value of the function. */
|
|
|
static tree
|
static tree
|
fold_builtin_sprintf (tree arglist, int ignored)
|
fold_builtin_sprintf (tree arglist, int ignored)
|
{
|
{
|
tree call, retval, dest, fmt;
|
tree call, retval, dest, fmt;
|
const char *fmt_str = NULL;
|
const char *fmt_str = NULL;
|
|
|
/* Verify the required arguments in the original call. We deal with two
|
/* Verify the required arguments in the original call. We deal with two
|
types of sprintf() calls: 'sprintf (str, fmt)' and
|
types of sprintf() calls: 'sprintf (str, fmt)' and
|
'sprintf (dest, "%s", orig)'. */
|
'sprintf (dest, "%s", orig)'. */
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE)
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE)
|
&& !validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, POINTER_TYPE,
|
&& !validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, POINTER_TYPE,
|
VOID_TYPE))
|
VOID_TYPE))
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Get the destination string and the format specifier. */
|
/* Get the destination string and the format specifier. */
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (TREE_CHAIN (arglist));
|
fmt = TREE_VALUE (TREE_CHAIN (arglist));
|
arglist = TREE_CHAIN (TREE_CHAIN (arglist));
|
arglist = TREE_CHAIN (TREE_CHAIN (arglist));
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
call = NULL_TREE;
|
call = NULL_TREE;
|
retval = NULL_TREE;
|
retval = NULL_TREE;
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* If the format doesn't contain % args or %%, use strcpy. */
|
/* If the format doesn't contain % args or %%, use strcpy. */
|
if (strchr (fmt_str, target_percent) == NULL)
|
if (strchr (fmt_str, target_percent) == NULL)
|
{
|
{
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
|
|
if (!fn)
|
if (!fn)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Don't optimize sprintf (buf, "abc", ptr++). */
|
/* Don't optimize sprintf (buf, "abc", ptr++). */
|
if (arglist)
|
if (arglist)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Convert sprintf (str, fmt) into strcpy (str, fmt) when
|
/* Convert sprintf (str, fmt) into strcpy (str, fmt) when
|
'format' is known to contain no % formats. */
|
'format' is known to contain no % formats. */
|
arglist = build_tree_list (NULL_TREE, fmt);
|
arglist = build_tree_list (NULL_TREE, fmt);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
call = build_function_call_expr (fn, arglist);
|
call = build_function_call_expr (fn, arglist);
|
if (!ignored)
|
if (!ignored)
|
retval = build_int_cst (NULL_TREE, strlen (fmt_str));
|
retval = build_int_cst (NULL_TREE, strlen (fmt_str));
|
}
|
}
|
|
|
/* If the format is "%s", use strcpy if the result isn't used. */
|
/* If the format is "%s", use strcpy if the result isn't used. */
|
else if (fmt_str && strcmp (fmt_str, target_percent_s) == 0)
|
else if (fmt_str && strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
tree fn, orig;
|
tree fn, orig;
|
fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
fn = implicit_built_in_decls[BUILT_IN_STRCPY];
|
|
|
if (!fn)
|
if (!fn)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Don't crash on sprintf (str1, "%s"). */
|
/* Don't crash on sprintf (str1, "%s"). */
|
if (!arglist)
|
if (!arglist)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
/* Convert sprintf (str1, "%s", str2) into strcpy (str1, str2). */
|
/* Convert sprintf (str1, "%s", str2) into strcpy (str1, str2). */
|
orig = TREE_VALUE (arglist);
|
orig = TREE_VALUE (arglist);
|
arglist = build_tree_list (NULL_TREE, orig);
|
arglist = build_tree_list (NULL_TREE, orig);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
if (!ignored)
|
if (!ignored)
|
{
|
{
|
retval = c_strlen (orig, 1);
|
retval = c_strlen (orig, 1);
|
if (!retval || TREE_CODE (retval) != INTEGER_CST)
|
if (!retval || TREE_CODE (retval) != INTEGER_CST)
|
return NULL_TREE;
|
return NULL_TREE;
|
}
|
}
|
call = build_function_call_expr (fn, arglist);
|
call = build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
if (call && retval)
|
if (call && retval)
|
{
|
{
|
retval = fold_convert
|
retval = fold_convert
|
(TREE_TYPE (TREE_TYPE (implicit_built_in_decls[BUILT_IN_SPRINTF])),
|
(TREE_TYPE (TREE_TYPE (implicit_built_in_decls[BUILT_IN_SPRINTF])),
|
retval);
|
retval);
|
return build2 (COMPOUND_EXPR, TREE_TYPE (retval), call, retval);
|
return build2 (COMPOUND_EXPR, TREE_TYPE (retval), call, retval);
|
}
|
}
|
else
|
else
|
return call;
|
return call;
|
}
|
}
|
|
|
/* Expand a call to __builtin_object_size. */
|
/* Expand a call to __builtin_object_size. */
|
|
|
rtx
|
rtx
|
expand_builtin_object_size (tree exp)
|
expand_builtin_object_size (tree exp)
|
{
|
{
|
tree ost;
|
tree ost;
|
int object_size_type;
|
int object_size_type;
|
tree fndecl = get_callee_fndecl (exp);
|
tree fndecl = get_callee_fndecl (exp);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
location_t locus = EXPR_LOCATION (exp);
|
location_t locus = EXPR_LOCATION (exp);
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
{
|
{
|
error ("%Hfirst argument of %D must be a pointer, second integer constant",
|
error ("%Hfirst argument of %D must be a pointer, second integer constant",
|
&locus, fndecl);
|
&locus, fndecl);
|
expand_builtin_trap ();
|
expand_builtin_trap ();
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
ost = TREE_VALUE (TREE_CHAIN (arglist));
|
ost = TREE_VALUE (TREE_CHAIN (arglist));
|
STRIP_NOPS (ost);
|
STRIP_NOPS (ost);
|
|
|
if (TREE_CODE (ost) != INTEGER_CST
|
if (TREE_CODE (ost) != INTEGER_CST
|
|| tree_int_cst_sgn (ost) < 0
|
|| tree_int_cst_sgn (ost) < 0
|
|| compare_tree_int (ost, 3) > 0)
|
|| compare_tree_int (ost, 3) > 0)
|
{
|
{
|
error ("%Hlast argument of %D is not integer constant between 0 and 3",
|
error ("%Hlast argument of %D is not integer constant between 0 and 3",
|
&locus, fndecl);
|
&locus, fndecl);
|
expand_builtin_trap ();
|
expand_builtin_trap ();
|
return const0_rtx;
|
return const0_rtx;
|
}
|
}
|
|
|
object_size_type = tree_low_cst (ost, 0);
|
object_size_type = tree_low_cst (ost, 0);
|
|
|
return object_size_type < 2 ? constm1_rtx : const0_rtx;
|
return object_size_type < 2 ? constm1_rtx : const0_rtx;
|
}
|
}
|
|
|
/* Expand EXP, a call to the __mem{cpy,pcpy,move,set}_chk builtin.
|
/* Expand EXP, a call to the __mem{cpy,pcpy,move,set}_chk builtin.
|
FCODE is the BUILT_IN_* to use.
|
FCODE is the BUILT_IN_* to use.
|
Return 0 if we failed; the caller should emit a normal call,
|
Return 0 if we failed; the caller should emit a normal call,
|
otherwise try to get the result in TARGET, if convenient (and in
|
otherwise try to get the result in TARGET, if convenient (and in
|
mode MODE if that's convenient). */
|
mode MODE if that's convenient). */
|
|
|
static rtx
|
static rtx
|
expand_builtin_memory_chk (tree exp, rtx target, enum machine_mode mode,
|
expand_builtin_memory_chk (tree exp, rtx target, enum machine_mode mode,
|
enum built_in_function fcode)
|
enum built_in_function fcode)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree dest, src, len, size;
|
tree dest, src, len, size;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE,
|
POINTER_TYPE,
|
fcode == BUILT_IN_MEMSET_CHK
|
fcode == BUILT_IN_MEMSET_CHK
|
? INTEGER_TYPE : POINTER_TYPE,
|
? INTEGER_TYPE : POINTER_TYPE,
|
INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
if (host_integerp (len, 1) || integer_all_onesp (size))
|
if (host_integerp (len, 1) || integer_all_onesp (size))
|
{
|
{
|
tree fn;
|
tree fn;
|
|
|
if (! integer_all_onesp (size) && tree_int_cst_lt (size, len))
|
if (! integer_all_onesp (size) && tree_int_cst_lt (size, len))
|
{
|
{
|
location_t locus = EXPR_LOCATION (exp);
|
location_t locus = EXPR_LOCATION (exp);
|
warning (0, "%Hcall to %D will always overflow destination buffer",
|
warning (0, "%Hcall to %D will always overflow destination buffer",
|
&locus, get_callee_fndecl (exp));
|
&locus, get_callee_fndecl (exp));
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
fn = NULL_TREE;
|
fn = NULL_TREE;
|
/* If __builtin_mem{cpy,pcpy,move,set}_chk is used, assume
|
/* If __builtin_mem{cpy,pcpy,move,set}_chk is used, assume
|
mem{cpy,pcpy,move,set} is available. */
|
mem{cpy,pcpy,move,set} is available. */
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
case BUILT_IN_MEMCPY_CHK:
|
case BUILT_IN_MEMCPY_CHK:
|
fn = built_in_decls[BUILT_IN_MEMCPY];
|
fn = built_in_decls[BUILT_IN_MEMCPY];
|
break;
|
break;
|
case BUILT_IN_MEMPCPY_CHK:
|
case BUILT_IN_MEMPCPY_CHK:
|
fn = built_in_decls[BUILT_IN_MEMPCPY];
|
fn = built_in_decls[BUILT_IN_MEMPCPY];
|
break;
|
break;
|
case BUILT_IN_MEMMOVE_CHK:
|
case BUILT_IN_MEMMOVE_CHK:
|
fn = built_in_decls[BUILT_IN_MEMMOVE];
|
fn = built_in_decls[BUILT_IN_MEMMOVE];
|
break;
|
break;
|
case BUILT_IN_MEMSET_CHK:
|
case BUILT_IN_MEMSET_CHK:
|
fn = built_in_decls[BUILT_IN_MEMSET];
|
fn = built_in_decls[BUILT_IN_MEMSET];
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
if (! fn)
|
if (! fn)
|
return 0;
|
return 0;
|
|
|
fn = build_function_call_expr (fn, arglist);
|
fn = build_function_call_expr (fn, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
}
|
}
|
else if (fcode == BUILT_IN_MEMSET_CHK)
|
else if (fcode == BUILT_IN_MEMSET_CHK)
|
return 0;
|
return 0;
|
else
|
else
|
{
|
{
|
unsigned int dest_align
|
unsigned int dest_align
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
|
|
|
/* If DEST is not a pointer type, call the normal function. */
|
/* If DEST is not a pointer type, call the normal function. */
|
if (dest_align == 0)
|
if (dest_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If SRC and DEST are the same (and not volatile), do nothing. */
|
/* If SRC and DEST are the same (and not volatile), do nothing. */
|
if (operand_equal_p (src, dest, 0))
|
if (operand_equal_p (src, dest, 0))
|
{
|
{
|
tree expr;
|
tree expr;
|
|
|
if (fcode != BUILT_IN_MEMPCPY_CHK)
|
if (fcode != BUILT_IN_MEMPCPY_CHK)
|
{
|
{
|
/* Evaluate and ignore LEN in case it has side-effects. */
|
/* Evaluate and ignore LEN in case it has side-effects. */
|
expand_expr (len, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
expand_expr (len, const0_rtx, VOIDmode, EXPAND_NORMAL);
|
return expand_expr (dest, target, mode, EXPAND_NORMAL);
|
return expand_expr (dest, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
len = fold_convert (TREE_TYPE (dest), len);
|
len = fold_convert (TREE_TYPE (dest), len);
|
expr = fold_build2 (PLUS_EXPR, TREE_TYPE (dest), dest, len);
|
expr = fold_build2 (PLUS_EXPR, TREE_TYPE (dest), dest, len);
|
return expand_expr (expr, target, mode, EXPAND_NORMAL);
|
return expand_expr (expr, target, mode, EXPAND_NORMAL);
|
}
|
}
|
|
|
/* __memmove_chk special case. */
|
/* __memmove_chk special case. */
|
if (fcode == BUILT_IN_MEMMOVE_CHK)
|
if (fcode == BUILT_IN_MEMMOVE_CHK)
|
{
|
{
|
unsigned int src_align
|
unsigned int src_align
|
= get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
= get_pointer_alignment (src, BIGGEST_ALIGNMENT);
|
|
|
if (src_align == 0)
|
if (src_align == 0)
|
return 0;
|
return 0;
|
|
|
/* If src is categorized for a readonly section we can use
|
/* If src is categorized for a readonly section we can use
|
normal __memcpy_chk. */
|
normal __memcpy_chk. */
|
if (readonly_data_expr (src))
|
if (readonly_data_expr (src))
|
{
|
{
|
tree fn = built_in_decls[BUILT_IN_MEMCPY_CHK];
|
tree fn = built_in_decls[BUILT_IN_MEMCPY_CHK];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
fn = build_function_call_expr (fn, arglist);
|
fn = build_function_call_expr (fn, arglist);
|
if (TREE_CODE (fn) == CALL_EXPR)
|
if (TREE_CODE (fn) == CALL_EXPR)
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
return expand_expr (fn, target, mode, EXPAND_NORMAL);
|
}
|
}
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Emit warning if a buffer overflow is detected at compile time. */
|
/* Emit warning if a buffer overflow is detected at compile time. */
|
|
|
static void
|
static void
|
maybe_emit_chk_warning (tree exp, enum built_in_function fcode)
|
maybe_emit_chk_warning (tree exp, enum built_in_function fcode)
|
{
|
{
|
int arg_mask, is_strlen = 0;
|
int arg_mask, is_strlen = 0;
|
tree arglist = TREE_OPERAND (exp, 1), a;
|
tree arglist = TREE_OPERAND (exp, 1), a;
|
tree len, size;
|
tree len, size;
|
location_t locus;
|
location_t locus;
|
|
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
case BUILT_IN_STRCPY_CHK:
|
case BUILT_IN_STRCPY_CHK:
|
case BUILT_IN_STPCPY_CHK:
|
case BUILT_IN_STPCPY_CHK:
|
/* For __strcat_chk the warning will be emitted only if overflowing
|
/* For __strcat_chk the warning will be emitted only if overflowing
|
by at least strlen (dest) + 1 bytes. */
|
by at least strlen (dest) + 1 bytes. */
|
case BUILT_IN_STRCAT_CHK:
|
case BUILT_IN_STRCAT_CHK:
|
arg_mask = 6;
|
arg_mask = 6;
|
is_strlen = 1;
|
is_strlen = 1;
|
break;
|
break;
|
case BUILT_IN_STRNCPY_CHK:
|
case BUILT_IN_STRNCPY_CHK:
|
arg_mask = 12;
|
arg_mask = 12;
|
break;
|
break;
|
case BUILT_IN_SNPRINTF_CHK:
|
case BUILT_IN_SNPRINTF_CHK:
|
case BUILT_IN_VSNPRINTF_CHK:
|
case BUILT_IN_VSNPRINTF_CHK:
|
arg_mask = 10;
|
arg_mask = 10;
|
break;
|
break;
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
|
|
len = NULL_TREE;
|
len = NULL_TREE;
|
size = NULL_TREE;
|
size = NULL_TREE;
|
for (a = arglist; a && arg_mask; a = TREE_CHAIN (a), arg_mask >>= 1)
|
for (a = arglist; a && arg_mask; a = TREE_CHAIN (a), arg_mask >>= 1)
|
if (arg_mask & 1)
|
if (arg_mask & 1)
|
{
|
{
|
if (len)
|
if (len)
|
size = a;
|
size = a;
|
else
|
else
|
len = a;
|
len = a;
|
}
|
}
|
|
|
if (!len || !size)
|
if (!len || !size)
|
return;
|
return;
|
|
|
len = TREE_VALUE (len);
|
len = TREE_VALUE (len);
|
size = TREE_VALUE (size);
|
size = TREE_VALUE (size);
|
|
|
if (! host_integerp (size, 1) || integer_all_onesp (size))
|
if (! host_integerp (size, 1) || integer_all_onesp (size))
|
return;
|
return;
|
|
|
if (is_strlen)
|
if (is_strlen)
|
{
|
{
|
len = c_strlen (len, 1);
|
len = c_strlen (len, 1);
|
if (! len || ! host_integerp (len, 1) || tree_int_cst_lt (len, size))
|
if (! len || ! host_integerp (len, 1) || tree_int_cst_lt (len, size))
|
return;
|
return;
|
}
|
}
|
else if (! host_integerp (len, 1) || ! tree_int_cst_lt (size, len))
|
else if (! host_integerp (len, 1) || ! tree_int_cst_lt (size, len))
|
return;
|
return;
|
|
|
locus = EXPR_LOCATION (exp);
|
locus = EXPR_LOCATION (exp);
|
warning (0, "%Hcall to %D will always overflow destination buffer",
|
warning (0, "%Hcall to %D will always overflow destination buffer",
|
&locus, get_callee_fndecl (exp));
|
&locus, get_callee_fndecl (exp));
|
}
|
}
|
|
|
/* Emit warning if a buffer overflow is detected at compile time
|
/* Emit warning if a buffer overflow is detected at compile time
|
in __sprintf_chk/__vsprintf_chk calls. */
|
in __sprintf_chk/__vsprintf_chk calls. */
|
|
|
static void
|
static void
|
maybe_emit_sprintf_chk_warning (tree exp, enum built_in_function fcode)
|
maybe_emit_sprintf_chk_warning (tree exp, enum built_in_function fcode)
|
{
|
{
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree arglist = TREE_OPERAND (exp, 1);
|
tree dest, size, len, fmt, flag;
|
tree dest, size, len, fmt, flag;
|
const char *fmt_str;
|
const char *fmt_str;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return;
|
return;
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return;
|
return;
|
flag = TREE_VALUE (arglist);
|
flag = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return;
|
return;
|
size = TREE_VALUE (arglist);
|
size = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return;
|
return;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
if (! host_integerp (size, 1) || integer_all_onesp (size))
|
if (! host_integerp (size, 1) || integer_all_onesp (size))
|
return;
|
return;
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return;
|
return;
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return;
|
return;
|
|
|
/* If the format doesn't contain % args or %%, we know its size. */
|
/* If the format doesn't contain % args or %%, we know its size. */
|
if (strchr (fmt_str, target_percent) == 0)
|
if (strchr (fmt_str, target_percent) == 0)
|
len = build_int_cstu (size_type_node, strlen (fmt_str));
|
len = build_int_cstu (size_type_node, strlen (fmt_str));
|
/* If the format is "%s" and first ... argument is a string literal,
|
/* If the format is "%s" and first ... argument is a string literal,
|
we know it too. */
|
we know it too. */
|
else if (fcode == BUILT_IN_SPRINTF_CHK && strcmp (fmt_str, target_percent_s) == 0)
|
else if (fcode == BUILT_IN_SPRINTF_CHK && strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (! arglist)
|
if (! arglist)
|
return;
|
return;
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (arg)))
|
if (! POINTER_TYPE_P (TREE_TYPE (arg)))
|
return;
|
return;
|
|
|
len = c_strlen (arg, 1);
|
len = c_strlen (arg, 1);
|
if (!len || ! host_integerp (len, 1))
|
if (!len || ! host_integerp (len, 1))
|
return;
|
return;
|
}
|
}
|
else
|
else
|
return;
|
return;
|
|
|
if (! tree_int_cst_lt (len, size))
|
if (! tree_int_cst_lt (len, size))
|
{
|
{
|
location_t locus = EXPR_LOCATION (exp);
|
location_t locus = EXPR_LOCATION (exp);
|
warning (0, "%Hcall to %D will always overflow destination buffer",
|
warning (0, "%Hcall to %D will always overflow destination buffer",
|
&locus, get_callee_fndecl (exp));
|
&locus, get_callee_fndecl (exp));
|
}
|
}
|
}
|
}
|
|
|
/* Fold a call to __builtin_object_size, if possible. */
|
/* Fold a call to __builtin_object_size, if possible. */
|
|
|
tree
|
tree
|
fold_builtin_object_size (tree arglist)
|
fold_builtin_object_size (tree arglist)
|
{
|
{
|
tree ptr, ost, ret = 0;
|
tree ptr, ost, ret = 0;
|
int object_size_type;
|
int object_size_type;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
ptr = TREE_VALUE (arglist);
|
ptr = TREE_VALUE (arglist);
|
ost = TREE_VALUE (TREE_CHAIN (arglist));
|
ost = TREE_VALUE (TREE_CHAIN (arglist));
|
STRIP_NOPS (ost);
|
STRIP_NOPS (ost);
|
|
|
if (TREE_CODE (ost) != INTEGER_CST
|
if (TREE_CODE (ost) != INTEGER_CST
|
|| tree_int_cst_sgn (ost) < 0
|
|| tree_int_cst_sgn (ost) < 0
|
|| compare_tree_int (ost, 3) > 0)
|
|| compare_tree_int (ost, 3) > 0)
|
return 0;
|
return 0;
|
|
|
object_size_type = tree_low_cst (ost, 0);
|
object_size_type = tree_low_cst (ost, 0);
|
|
|
/* __builtin_object_size doesn't evaluate side-effects in its arguments;
|
/* __builtin_object_size doesn't evaluate side-effects in its arguments;
|
if there are any side-effects, it returns (size_t) -1 for types 0 and 1
|
if there are any side-effects, it returns (size_t) -1 for types 0 and 1
|
and (size_t) 0 for types 2 and 3. */
|
and (size_t) 0 for types 2 and 3. */
|
if (TREE_SIDE_EFFECTS (ptr))
|
if (TREE_SIDE_EFFECTS (ptr))
|
return fold_convert (size_type_node,
|
return fold_convert (size_type_node,
|
object_size_type < 2
|
object_size_type < 2
|
? integer_minus_one_node : integer_zero_node);
|
? integer_minus_one_node : integer_zero_node);
|
|
|
if (TREE_CODE (ptr) == ADDR_EXPR)
|
if (TREE_CODE (ptr) == ADDR_EXPR)
|
ret = build_int_cstu (size_type_node,
|
ret = build_int_cstu (size_type_node,
|
compute_builtin_object_size (ptr, object_size_type));
|
compute_builtin_object_size (ptr, object_size_type));
|
|
|
else if (TREE_CODE (ptr) == SSA_NAME)
|
else if (TREE_CODE (ptr) == SSA_NAME)
|
{
|
{
|
unsigned HOST_WIDE_INT bytes;
|
unsigned HOST_WIDE_INT bytes;
|
|
|
/* If object size is not known yet, delay folding until
|
/* If object size is not known yet, delay folding until
|
later. Maybe subsequent passes will help determining
|
later. Maybe subsequent passes will help determining
|
it. */
|
it. */
|
bytes = compute_builtin_object_size (ptr, object_size_type);
|
bytes = compute_builtin_object_size (ptr, object_size_type);
|
if (bytes != (unsigned HOST_WIDE_INT) (object_size_type < 2
|
if (bytes != (unsigned HOST_WIDE_INT) (object_size_type < 2
|
? -1 : 0))
|
? -1 : 0))
|
ret = build_int_cstu (size_type_node, bytes);
|
ret = build_int_cstu (size_type_node, bytes);
|
}
|
}
|
|
|
if (ret)
|
if (ret)
|
{
|
{
|
ret = force_fit_type (ret, -1, false, false);
|
ret = force_fit_type (ret, -1, false, false);
|
if (TREE_CONSTANT_OVERFLOW (ret))
|
if (TREE_CONSTANT_OVERFLOW (ret))
|
ret = 0;
|
ret = 0;
|
}
|
}
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/* Fold a call to the __mem{cpy,pcpy,move,set}_chk builtin.
|
/* Fold a call to the __mem{cpy,pcpy,move,set}_chk builtin.
|
IGNORE is true, if return value can be ignored. FCODE is the BUILT_IN_*
|
IGNORE is true, if return value can be ignored. FCODE is the BUILT_IN_*
|
code of the builtin. If MAXLEN is not NULL, it is maximum length
|
code of the builtin. If MAXLEN is not NULL, it is maximum length
|
passed as third argument. */
|
passed as third argument. */
|
|
|
tree
|
tree
|
fold_builtin_memory_chk (tree fndecl, tree arglist, tree maxlen, bool ignore,
|
fold_builtin_memory_chk (tree fndecl, tree arglist, tree maxlen, bool ignore,
|
enum built_in_function fcode)
|
enum built_in_function fcode)
|
{
|
{
|
tree dest, src, len, size, fn;
|
tree dest, src, len, size, fn;
|
|
|
if (!validate_arglist (arglist,
|
if (!validate_arglist (arglist,
|
POINTER_TYPE,
|
POINTER_TYPE,
|
fcode == BUILT_IN_MEMSET_CHK
|
fcode == BUILT_IN_MEMSET_CHK
|
? INTEGER_TYPE : POINTER_TYPE,
|
? INTEGER_TYPE : POINTER_TYPE,
|
INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
INTEGER_TYPE, INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
/* Actually val for __memset_chk, but it doesn't matter. */
|
/* Actually val for __memset_chk, but it doesn't matter. */
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
|
|
/* If SRC and DEST are the same (and not volatile), return DEST
|
/* If SRC and DEST are the same (and not volatile), return DEST
|
(resp. DEST+LEN for __mempcpy_chk). */
|
(resp. DEST+LEN for __mempcpy_chk). */
|
if (fcode != BUILT_IN_MEMSET_CHK && operand_equal_p (src, dest, 0))
|
if (fcode != BUILT_IN_MEMSET_CHK && operand_equal_p (src, dest, 0))
|
{
|
{
|
if (fcode != BUILT_IN_MEMPCPY_CHK)
|
if (fcode != BUILT_IN_MEMPCPY_CHK)
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, len);
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, len);
|
else
|
else
|
{
|
{
|
tree temp = fold_convert (TREE_TYPE (dest), len);
|
tree temp = fold_convert (TREE_TYPE (dest), len);
|
temp = fold_build2 (PLUS_EXPR, TREE_TYPE (dest), dest, temp);
|
temp = fold_build2 (PLUS_EXPR, TREE_TYPE (dest), dest, temp);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), temp);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), temp);
|
}
|
}
|
}
|
}
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
if (! integer_all_onesp (size))
|
if (! integer_all_onesp (size))
|
{
|
{
|
if (! host_integerp (len, 1))
|
if (! host_integerp (len, 1))
|
{
|
{
|
/* If LEN is not constant, try MAXLEN too.
|
/* If LEN is not constant, try MAXLEN too.
|
For MAXLEN only allow optimizing into non-_ocs function
|
For MAXLEN only allow optimizing into non-_ocs function
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
{
|
{
|
if (fcode == BUILT_IN_MEMPCPY_CHK && ignore)
|
if (fcode == BUILT_IN_MEMPCPY_CHK && ignore)
|
{
|
{
|
/* (void) __mempcpy_chk () can be optimized into
|
/* (void) __mempcpy_chk () can be optimized into
|
(void) __memcpy_chk (). */
|
(void) __memcpy_chk (). */
|
fn = built_in_decls[BUILT_IN_MEMCPY_CHK];
|
fn = built_in_decls[BUILT_IN_MEMCPY_CHK];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
else
|
else
|
maxlen = len;
|
maxlen = len;
|
|
|
if (tree_int_cst_lt (size, maxlen))
|
if (tree_int_cst_lt (size, maxlen))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
fn = NULL_TREE;
|
fn = NULL_TREE;
|
/* If __builtin_mem{cpy,pcpy,move,set}_chk is used, assume
|
/* If __builtin_mem{cpy,pcpy,move,set}_chk is used, assume
|
mem{cpy,pcpy,move,set} is available. */
|
mem{cpy,pcpy,move,set} is available. */
|
switch (fcode)
|
switch (fcode)
|
{
|
{
|
case BUILT_IN_MEMCPY_CHK:
|
case BUILT_IN_MEMCPY_CHK:
|
fn = built_in_decls[BUILT_IN_MEMCPY];
|
fn = built_in_decls[BUILT_IN_MEMCPY];
|
break;
|
break;
|
case BUILT_IN_MEMPCPY_CHK:
|
case BUILT_IN_MEMPCPY_CHK:
|
fn = built_in_decls[BUILT_IN_MEMPCPY];
|
fn = built_in_decls[BUILT_IN_MEMPCPY];
|
break;
|
break;
|
case BUILT_IN_MEMMOVE_CHK:
|
case BUILT_IN_MEMMOVE_CHK:
|
fn = built_in_decls[BUILT_IN_MEMMOVE];
|
fn = built_in_decls[BUILT_IN_MEMMOVE];
|
break;
|
break;
|
case BUILT_IN_MEMSET_CHK:
|
case BUILT_IN_MEMSET_CHK:
|
fn = built_in_decls[BUILT_IN_MEMSET];
|
fn = built_in_decls[BUILT_IN_MEMSET];
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to the __st[rp]cpy_chk builtin.
|
/* Fold a call to the __st[rp]cpy_chk builtin.
|
IGNORE is true, if return value can be ignored. FCODE is the BUILT_IN_*
|
IGNORE is true, if return value can be ignored. FCODE is the BUILT_IN_*
|
code of the builtin. If MAXLEN is not NULL, it is maximum length of
|
code of the builtin. If MAXLEN is not NULL, it is maximum length of
|
strings passed as second argument. */
|
strings passed as second argument. */
|
|
|
tree
|
tree
|
fold_builtin_stxcpy_chk (tree fndecl, tree arglist, tree maxlen, bool ignore,
|
fold_builtin_stxcpy_chk (tree fndecl, tree arglist, tree maxlen, bool ignore,
|
enum built_in_function fcode)
|
enum built_in_function fcode)
|
{
|
{
|
tree dest, src, size, len, fn;
|
tree dest, src, size, len, fn;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
VOID_TYPE))
|
VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
/* If SRC and DEST are the same (and not volatile), return DEST. */
|
/* If SRC and DEST are the same (and not volatile), return DEST. */
|
if (fcode == BUILT_IN_STRCPY_CHK && operand_equal_p (src, dest, 0))
|
if (fcode == BUILT_IN_STRCPY_CHK && operand_equal_p (src, dest, 0))
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), dest);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), dest);
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
if (! integer_all_onesp (size))
|
if (! integer_all_onesp (size))
|
{
|
{
|
len = c_strlen (src, 1);
|
len = c_strlen (src, 1);
|
if (! len || ! host_integerp (len, 1))
|
if (! len || ! host_integerp (len, 1))
|
{
|
{
|
/* If LEN is not constant, try MAXLEN too.
|
/* If LEN is not constant, try MAXLEN too.
|
For MAXLEN only allow optimizing into non-_ocs function
|
For MAXLEN only allow optimizing into non-_ocs function
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
{
|
{
|
if (fcode == BUILT_IN_STPCPY_CHK)
|
if (fcode == BUILT_IN_STPCPY_CHK)
|
{
|
{
|
if (! ignore)
|
if (! ignore)
|
return 0;
|
return 0;
|
|
|
/* If return value of __stpcpy_chk is ignored,
|
/* If return value of __stpcpy_chk is ignored,
|
optimize into __strcpy_chk. */
|
optimize into __strcpy_chk. */
|
fn = built_in_decls[BUILT_IN_STRCPY_CHK];
|
fn = built_in_decls[BUILT_IN_STRCPY_CHK];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
if (! len || TREE_SIDE_EFFECTS (len))
|
if (! len || TREE_SIDE_EFFECTS (len))
|
return 0;
|
return 0;
|
|
|
/* If c_strlen returned something, but not a constant,
|
/* If c_strlen returned something, but not a constant,
|
transform __strcpy_chk into __memcpy_chk. */
|
transform __strcpy_chk into __memcpy_chk. */
|
fn = built_in_decls[BUILT_IN_MEMCPY_CHK];
|
fn = built_in_decls[BUILT_IN_MEMCPY_CHK];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
len = size_binop (PLUS_EXPR, len, ssize_int (1));
|
len = size_binop (PLUS_EXPR, len, ssize_int (1));
|
arglist = build_tree_list (NULL_TREE, size);
|
arglist = build_tree_list (NULL_TREE, size);
|
arglist = tree_cons (NULL_TREE, len, arglist);
|
arglist = tree_cons (NULL_TREE, len, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)),
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)),
|
build_function_call_expr (fn, arglist));
|
build_function_call_expr (fn, arglist));
|
}
|
}
|
}
|
}
|
else
|
else
|
maxlen = len;
|
maxlen = len;
|
|
|
if (! tree_int_cst_lt (maxlen, size))
|
if (! tree_int_cst_lt (maxlen, size))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = build_tree_list (NULL_TREE, src);
|
arglist = build_tree_list (NULL_TREE, src);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
/* If __builtin_st{r,p}cpy_chk is used, assume st{r,p}cpy is available. */
|
/* If __builtin_st{r,p}cpy_chk is used, assume st{r,p}cpy is available. */
|
fn = built_in_decls[fcode == BUILT_IN_STPCPY_CHK
|
fn = built_in_decls[fcode == BUILT_IN_STPCPY_CHK
|
? BUILT_IN_STPCPY : BUILT_IN_STRCPY];
|
? BUILT_IN_STPCPY : BUILT_IN_STRCPY];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to the __strncpy_chk builtin.
|
/* Fold a call to the __strncpy_chk builtin.
|
If MAXLEN is not NULL, it is maximum length passed as third argument. */
|
If MAXLEN is not NULL, it is maximum length passed as third argument. */
|
|
|
tree
|
tree
|
fold_builtin_strncpy_chk (tree arglist, tree maxlen)
|
fold_builtin_strncpy_chk (tree arglist, tree maxlen)
|
{
|
{
|
tree dest, src, size, len, fn;
|
tree dest, src, size, len, fn;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
INTEGER_TYPE, VOID_TYPE))
|
INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
if (! integer_all_onesp (size))
|
if (! integer_all_onesp (size))
|
{
|
{
|
if (! host_integerp (len, 1))
|
if (! host_integerp (len, 1))
|
{
|
{
|
/* If LEN is not constant, try MAXLEN too.
|
/* If LEN is not constant, try MAXLEN too.
|
For MAXLEN only allow optimizing into non-_ocs function
|
For MAXLEN only allow optimizing into non-_ocs function
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
return 0;
|
return 0;
|
}
|
}
|
else
|
else
|
maxlen = len;
|
maxlen = len;
|
|
|
if (tree_int_cst_lt (size, maxlen))
|
if (tree_int_cst_lt (size, maxlen))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
/* If __builtin_strncpy_chk is used, assume strncpy is available. */
|
/* If __builtin_strncpy_chk is used, assume strncpy is available. */
|
fn = built_in_decls[BUILT_IN_STRNCPY];
|
fn = built_in_decls[BUILT_IN_STRNCPY];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to the __strcat_chk builtin FNDECL with ARGLIST. */
|
/* Fold a call to the __strcat_chk builtin FNDECL with ARGLIST. */
|
|
|
static tree
|
static tree
|
fold_builtin_strcat_chk (tree fndecl, tree arglist)
|
fold_builtin_strcat_chk (tree fndecl, tree arglist)
|
{
|
{
|
tree dest, src, size, fn;
|
tree dest, src, size, fn;
|
const char *p;
|
const char *p;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
VOID_TYPE))
|
VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
|
|
p = c_getstr (src);
|
p = c_getstr (src);
|
/* If the SRC parameter is "", return DEST. */
|
/* If the SRC parameter is "", return DEST. */
|
if (p && *p == '\0')
|
if (p && *p == '\0')
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, src);
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, src);
|
|
|
if (! host_integerp (size, 1) || ! integer_all_onesp (size))
|
if (! host_integerp (size, 1) || ! integer_all_onesp (size))
|
return 0;
|
return 0;
|
|
|
arglist = build_tree_list (NULL_TREE, src);
|
arglist = build_tree_list (NULL_TREE, src);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
/* If __builtin_strcat_chk is used, assume strcat is available. */
|
/* If __builtin_strcat_chk is used, assume strcat is available. */
|
fn = built_in_decls[BUILT_IN_STRCAT];
|
fn = built_in_decls[BUILT_IN_STRCAT];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to the __strncat_chk builtin EXP. */
|
/* Fold a call to the __strncat_chk builtin EXP. */
|
|
|
static tree
|
static tree
|
fold_builtin_strncat_chk (tree fndecl, tree arglist)
|
fold_builtin_strncat_chk (tree fndecl, tree arglist)
|
{
|
{
|
tree dest, src, size, len, fn;
|
tree dest, src, size, len, fn;
|
const char *p;
|
const char *p;
|
|
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE,
|
INTEGER_TYPE, VOID_TYPE))
|
INTEGER_TYPE, VOID_TYPE))
|
return 0;
|
return 0;
|
|
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
src = TREE_VALUE (TREE_CHAIN (arglist));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist))));
|
|
|
p = c_getstr (src);
|
p = c_getstr (src);
|
/* If the SRC parameter is "" or if LEN is 0, return DEST. */
|
/* If the SRC parameter is "" or if LEN is 0, return DEST. */
|
if (p && *p == '\0')
|
if (p && *p == '\0')
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, len);
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, len);
|
else if (integer_zerop (len))
|
else if (integer_zerop (len))
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, src);
|
return omit_one_operand (TREE_TYPE (TREE_TYPE (fndecl)), dest, src);
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
if (! integer_all_onesp (size))
|
if (! integer_all_onesp (size))
|
{
|
{
|
tree src_len = c_strlen (src, 1);
|
tree src_len = c_strlen (src, 1);
|
if (src_len
|
if (src_len
|
&& host_integerp (src_len, 1)
|
&& host_integerp (src_len, 1)
|
&& host_integerp (len, 1)
|
&& host_integerp (len, 1)
|
&& ! tree_int_cst_lt (len, src_len))
|
&& ! tree_int_cst_lt (len, src_len))
|
{
|
{
|
/* If LEN >= strlen (SRC), optimize into __strcat_chk. */
|
/* If LEN >= strlen (SRC), optimize into __strcat_chk. */
|
fn = built_in_decls[BUILT_IN_STRCAT_CHK];
|
fn = built_in_decls[BUILT_IN_STRCAT_CHK];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
arglist = build_tree_list (NULL_TREE, size);
|
arglist = build_tree_list (NULL_TREE, size);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = build_tree_list (NULL_TREE, len);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, src, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
/* If __builtin_strncat_chk is used, assume strncat is available. */
|
/* If __builtin_strncat_chk is used, assume strncat is available. */
|
fn = built_in_decls[BUILT_IN_STRNCAT];
|
fn = built_in_decls[BUILT_IN_STRNCAT];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to __{,v}sprintf_chk with argument list ARGLIST. Return 0 if
|
/* Fold a call to __{,v}sprintf_chk with argument list ARGLIST. Return 0 if
|
a normal call should be emitted rather than expanding the function
|
a normal call should be emitted rather than expanding the function
|
inline. FCODE is either BUILT_IN_SPRINTF_CHK or BUILT_IN_VSPRINTF_CHK. */
|
inline. FCODE is either BUILT_IN_SPRINTF_CHK or BUILT_IN_VSPRINTF_CHK. */
|
|
|
static tree
|
static tree
|
fold_builtin_sprintf_chk (tree arglist, enum built_in_function fcode)
|
fold_builtin_sprintf_chk (tree arglist, enum built_in_function fcode)
|
{
|
{
|
tree dest, size, len, fn, fmt, flag;
|
tree dest, size, len, fn, fmt, flag;
|
const char *fmt_str;
|
const char *fmt_str;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (dest)))
|
if (! POINTER_TYPE_P (TREE_TYPE (dest)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
flag = TREE_VALUE (arglist);
|
flag = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (flag)) != INTEGER_TYPE)
|
if (TREE_CODE (TREE_TYPE (flag)) != INTEGER_TYPE)
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
size = TREE_VALUE (arglist);
|
size = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE)
|
if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE)
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
len = NULL_TREE;
|
len = NULL_TREE;
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str != NULL)
|
if (fmt_str != NULL)
|
{
|
{
|
/* If the format doesn't contain % args or %%, we know the size. */
|
/* If the format doesn't contain % args or %%, we know the size. */
|
if (strchr (fmt_str, target_percent) == 0)
|
if (strchr (fmt_str, target_percent) == 0)
|
{
|
{
|
if (fcode != BUILT_IN_SPRINTF_CHK || arglist == NULL_TREE)
|
if (fcode != BUILT_IN_SPRINTF_CHK || arglist == NULL_TREE)
|
len = build_int_cstu (size_type_node, strlen (fmt_str));
|
len = build_int_cstu (size_type_node, strlen (fmt_str));
|
}
|
}
|
/* If the format is "%s" and first ... argument is a string literal,
|
/* If the format is "%s" and first ... argument is a string literal,
|
we know the size too. */
|
we know the size too. */
|
else if (fcode == BUILT_IN_SPRINTF_CHK && strcmp (fmt_str, target_percent_s) == 0)
|
else if (fcode == BUILT_IN_SPRINTF_CHK && strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
tree arg;
|
tree arg;
|
|
|
if (arglist && !TREE_CHAIN (arglist))
|
if (arglist && !TREE_CHAIN (arglist))
|
{
|
{
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
if (POINTER_TYPE_P (TREE_TYPE (arg)))
|
if (POINTER_TYPE_P (TREE_TYPE (arg)))
|
{
|
{
|
len = c_strlen (arg, 1);
|
len = c_strlen (arg, 1);
|
if (! len || ! host_integerp (len, 1))
|
if (! len || ! host_integerp (len, 1))
|
len = NULL_TREE;
|
len = NULL_TREE;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (! integer_all_onesp (size))
|
if (! integer_all_onesp (size))
|
{
|
{
|
if (! len || ! tree_int_cst_lt (len, size))
|
if (! len || ! tree_int_cst_lt (len, size))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Only convert __{,v}sprintf_chk to {,v}sprintf if flag is 0
|
/* Only convert __{,v}sprintf_chk to {,v}sprintf if flag is 0
|
or if format doesn't contain % chars or is "%s". */
|
or if format doesn't contain % chars or is "%s". */
|
if (! integer_zerop (flag))
|
if (! integer_zerop (flag))
|
{
|
{
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return 0;
|
return 0;
|
if (strchr (fmt_str, target_percent) != NULL && strcmp (fmt_str, target_percent_s))
|
if (strchr (fmt_str, target_percent) != NULL && strcmp (fmt_str, target_percent_s))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
/* If __builtin_{,v}sprintf_chk is used, assume {,v}sprintf is available. */
|
/* If __builtin_{,v}sprintf_chk is used, assume {,v}sprintf is available. */
|
fn = built_in_decls[fcode == BUILT_IN_VSPRINTF_CHK
|
fn = built_in_decls[fcode == BUILT_IN_VSPRINTF_CHK
|
? BUILT_IN_VSPRINTF : BUILT_IN_SPRINTF];
|
? BUILT_IN_VSPRINTF : BUILT_IN_SPRINTF];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to {,v}snprintf with argument list ARGLIST. Return 0 if
|
/* Fold a call to {,v}snprintf with argument list ARGLIST. Return 0 if
|
a normal call should be emitted rather than expanding the function
|
a normal call should be emitted rather than expanding the function
|
inline. FCODE is either BUILT_IN_SNPRINTF_CHK or
|
inline. FCODE is either BUILT_IN_SNPRINTF_CHK or
|
BUILT_IN_VSNPRINTF_CHK. If MAXLEN is not NULL, it is maximum length
|
BUILT_IN_VSNPRINTF_CHK. If MAXLEN is not NULL, it is maximum length
|
passed as second argument. */
|
passed as second argument. */
|
|
|
tree
|
tree
|
fold_builtin_snprintf_chk (tree arglist, tree maxlen,
|
fold_builtin_snprintf_chk (tree arglist, tree maxlen,
|
enum built_in_function fcode)
|
enum built_in_function fcode)
|
{
|
{
|
tree dest, size, len, fn, fmt, flag;
|
tree dest, size, len, fn, fmt, flag;
|
const char *fmt_str;
|
const char *fmt_str;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
dest = TREE_VALUE (arglist);
|
dest = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (dest)))
|
if (! POINTER_TYPE_P (TREE_TYPE (dest)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
len = TREE_VALUE (arglist);
|
len = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (len)) != INTEGER_TYPE)
|
if (TREE_CODE (TREE_TYPE (len)) != INTEGER_TYPE)
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
flag = TREE_VALUE (arglist);
|
flag = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (len)) != INTEGER_TYPE)
|
if (TREE_CODE (TREE_TYPE (len)) != INTEGER_TYPE)
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
size = TREE_VALUE (arglist);
|
size = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE)
|
if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE)
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
if (! host_integerp (size, 1))
|
if (! host_integerp (size, 1))
|
return 0;
|
return 0;
|
|
|
if (! integer_all_onesp (size))
|
if (! integer_all_onesp (size))
|
{
|
{
|
if (! host_integerp (len, 1))
|
if (! host_integerp (len, 1))
|
{
|
{
|
/* If LEN is not constant, try MAXLEN too.
|
/* If LEN is not constant, try MAXLEN too.
|
For MAXLEN only allow optimizing into non-_ocs function
|
For MAXLEN only allow optimizing into non-_ocs function
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if SIZE is >= MAXLEN, never convert to __ocs_fail (). */
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
if (maxlen == NULL_TREE || ! host_integerp (maxlen, 1))
|
return 0;
|
return 0;
|
}
|
}
|
else
|
else
|
maxlen = len;
|
maxlen = len;
|
|
|
if (tree_int_cst_lt (size, maxlen))
|
if (tree_int_cst_lt (size, maxlen))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* Only convert __{,v}snprintf_chk to {,v}snprintf if flag is 0
|
/* Only convert __{,v}snprintf_chk to {,v}snprintf if flag is 0
|
or if format doesn't contain % chars or is "%s". */
|
or if format doesn't contain % chars or is "%s". */
|
if (! integer_zerop (flag))
|
if (! integer_zerop (flag))
|
{
|
{
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return 0;
|
return 0;
|
if (strchr (fmt_str, target_percent) != NULL && strcmp (fmt_str, target_percent_s))
|
if (strchr (fmt_str, target_percent) != NULL && strcmp (fmt_str, target_percent_s))
|
return 0;
|
return 0;
|
}
|
}
|
|
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
arglist = tree_cons (NULL_TREE, len, arglist);
|
arglist = tree_cons (NULL_TREE, len, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
arglist = tree_cons (NULL_TREE, dest, arglist);
|
|
|
/* If __builtin_{,v}snprintf_chk is used, assume {,v}snprintf is
|
/* If __builtin_{,v}snprintf_chk is used, assume {,v}snprintf is
|
available. */
|
available. */
|
fn = built_in_decls[fcode == BUILT_IN_VSNPRINTF_CHK
|
fn = built_in_decls[fcode == BUILT_IN_VSNPRINTF_CHK
|
? BUILT_IN_VSNPRINTF : BUILT_IN_SNPRINTF];
|
? BUILT_IN_VSNPRINTF : BUILT_IN_SNPRINTF];
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
return build_function_call_expr (fn, arglist);
|
return build_function_call_expr (fn, arglist);
|
}
|
}
|
|
|
/* Fold a call to the {,v}printf{,_unlocked} and __{,v}printf_chk builtins.
|
/* Fold a call to the {,v}printf{,_unlocked} and __{,v}printf_chk builtins.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree. FCODE is the BUILT_IN_*
|
simplified form of the call as a tree. FCODE is the BUILT_IN_*
|
code of the function to be simplified. */
|
code of the function to be simplified. */
|
|
|
static tree
|
static tree
|
fold_builtin_printf (tree fndecl, tree arglist, bool ignore,
|
fold_builtin_printf (tree fndecl, tree arglist, bool ignore,
|
enum built_in_function fcode)
|
enum built_in_function fcode)
|
{
|
{
|
tree fmt, fn = NULL_TREE, fn_putchar, fn_puts, arg, call;
|
tree fmt, fn = NULL_TREE, fn_putchar, fn_puts, arg, call;
|
const char *fmt_str = NULL;
|
const char *fmt_str = NULL;
|
|
|
/* If the return value is used, don't do the transformation. */
|
/* If the return value is used, don't do the transformation. */
|
if (! ignore)
|
if (! ignore)
|
return 0;
|
return 0;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (fcode == BUILT_IN_PRINTF_CHK || fcode == BUILT_IN_VPRINTF_CHK)
|
if (fcode == BUILT_IN_PRINTF_CHK || fcode == BUILT_IN_VPRINTF_CHK)
|
{
|
{
|
tree flag;
|
tree flag;
|
|
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
flag = TREE_VALUE (arglist);
|
flag = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (flag)) != INTEGER_TYPE
|
if (TREE_CODE (TREE_TYPE (flag)) != INTEGER_TYPE
|
|| TREE_SIDE_EFFECTS (flag))
|
|| TREE_SIDE_EFFECTS (flag))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
}
|
}
|
|
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
if (fcode == BUILT_IN_PRINTF_UNLOCKED)
|
if (fcode == BUILT_IN_PRINTF_UNLOCKED)
|
{
|
{
|
/* If we're using an unlocked function, assume the other
|
/* If we're using an unlocked function, assume the other
|
unlocked functions exist explicitly. */
|
unlocked functions exist explicitly. */
|
fn_putchar = built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED];
|
fn_putchar = built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED];
|
fn_puts = built_in_decls[BUILT_IN_PUTS_UNLOCKED];
|
fn_puts = built_in_decls[BUILT_IN_PUTS_UNLOCKED];
|
}
|
}
|
else
|
else
|
{
|
{
|
fn_putchar = implicit_built_in_decls[BUILT_IN_PUTCHAR];
|
fn_putchar = implicit_built_in_decls[BUILT_IN_PUTCHAR];
|
fn_puts = implicit_built_in_decls[BUILT_IN_PUTS];
|
fn_puts = implicit_built_in_decls[BUILT_IN_PUTS];
|
}
|
}
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
if (strcmp (fmt_str, target_percent_s) == 0 || strchr (fmt_str, target_percent) == NULL)
|
if (strcmp (fmt_str, target_percent_s) == 0 || strchr (fmt_str, target_percent) == NULL)
|
{
|
{
|
const char *str;
|
const char *str;
|
|
|
if (strcmp (fmt_str, target_percent_s) == 0)
|
if (strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
if (fcode == BUILT_IN_VPRINTF || fcode == BUILT_IN_VPRINTF_CHK)
|
if (fcode == BUILT_IN_VPRINTF || fcode == BUILT_IN_VPRINTF_CHK)
|
return 0;
|
return 0;
|
|
|
if (! arglist
|
if (! arglist
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
|
|
str = c_getstr (TREE_VALUE (arglist));
|
str = c_getstr (TREE_VALUE (arglist));
|
if (str == NULL)
|
if (str == NULL)
|
return 0;
|
return 0;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* The format specifier doesn't contain any '%' characters. */
|
/* The format specifier doesn't contain any '%' characters. */
|
if (fcode != BUILT_IN_VPRINTF && fcode != BUILT_IN_VPRINTF_CHK
|
if (fcode != BUILT_IN_VPRINTF && fcode != BUILT_IN_VPRINTF_CHK
|
&& arglist)
|
&& arglist)
|
return 0;
|
return 0;
|
str = fmt_str;
|
str = fmt_str;
|
}
|
}
|
|
|
/* If the string was "", printf does nothing. */
|
/* If the string was "", printf does nothing. */
|
if (str[0] == '\0')
|
if (str[0] == '\0')
|
return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), 0);
|
return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), 0);
|
|
|
/* If the string has length of 1, call putchar. */
|
/* If the string has length of 1, call putchar. */
|
if (str[1] == '\0')
|
if (str[1] == '\0')
|
{
|
{
|
/* Given printf("c"), (where c is any one character,)
|
/* Given printf("c"), (where c is any one character,)
|
convert "c"[0] to an int and pass that to the replacement
|
convert "c"[0] to an int and pass that to the replacement
|
function. */
|
function. */
|
arg = build_int_cst (NULL_TREE, str[0]);
|
arg = build_int_cst (NULL_TREE, str[0]);
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
fn = fn_putchar;
|
fn = fn_putchar;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* If the string was "string\n", call puts("string"). */
|
/* If the string was "string\n", call puts("string"). */
|
size_t len = strlen (str);
|
size_t len = strlen (str);
|
if ((unsigned char)str[len - 1] == target_newline)
|
if ((unsigned char)str[len - 1] == target_newline)
|
{
|
{
|
/* Create a NUL-terminated string that's one char shorter
|
/* Create a NUL-terminated string that's one char shorter
|
than the original, stripping off the trailing '\n'. */
|
than the original, stripping off the trailing '\n'. */
|
char *newstr = alloca (len);
|
char *newstr = alloca (len);
|
memcpy (newstr, str, len - 1);
|
memcpy (newstr, str, len - 1);
|
newstr[len - 1] = 0;
|
newstr[len - 1] = 0;
|
|
|
arg = build_string_literal (len, newstr);
|
arg = build_string_literal (len, newstr);
|
arglist = build_tree_list (NULL_TREE, arg);
|
arglist = build_tree_list (NULL_TREE, arg);
|
fn = fn_puts;
|
fn = fn_puts;
|
}
|
}
|
else
|
else
|
/* We'd like to arrange to call fputs(string,stdout) here,
|
/* We'd like to arrange to call fputs(string,stdout) here,
|
but we need stdout and don't have a way to get it yet. */
|
but we need stdout and don't have a way to get it yet. */
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* The other optimizations can be done only on the non-va_list variants. */
|
/* The other optimizations can be done only on the non-va_list variants. */
|
else if (fcode == BUILT_IN_VPRINTF || fcode == BUILT_IN_VPRINTF_CHK)
|
else if (fcode == BUILT_IN_VPRINTF || fcode == BUILT_IN_VPRINTF_CHK)
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "%s\n", call __builtin_puts(arg). */
|
/* If the format specifier was "%s\n", call __builtin_puts(arg). */
|
else if (strcmp (fmt_str, target_percent_s_newline) == 0)
|
else if (strcmp (fmt_str, target_percent_s_newline) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
fn = fn_puts;
|
fn = fn_puts;
|
}
|
}
|
|
|
/* If the format specifier was "%c", call __builtin_putchar(arg). */
|
/* If the format specifier was "%c", call __builtin_putchar(arg). */
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
fn = fn_putchar;
|
fn = fn_putchar;
|
}
|
}
|
|
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
call = build_function_call_expr (fn, arglist);
|
call = build_function_call_expr (fn, arglist);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), call);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), call);
|
}
|
}
|
|
|
/* Fold a call to the {,v}fprintf{,_unlocked} and __{,v}printf_chk builtins.
|
/* Fold a call to the {,v}fprintf{,_unlocked} and __{,v}printf_chk builtins.
|
|
|
Return 0 if no simplification was possible, otherwise return the
|
Return 0 if no simplification was possible, otherwise return the
|
simplified form of the call as a tree. FCODE is the BUILT_IN_*
|
simplified form of the call as a tree. FCODE is the BUILT_IN_*
|
code of the function to be simplified. */
|
code of the function to be simplified. */
|
|
|
static tree
|
static tree
|
fold_builtin_fprintf (tree fndecl, tree arglist, bool ignore,
|
fold_builtin_fprintf (tree fndecl, tree arglist, bool ignore,
|
enum built_in_function fcode)
|
enum built_in_function fcode)
|
{
|
{
|
tree fp, fmt, fn = NULL_TREE, fn_fputc, fn_fputs, arg, call;
|
tree fp, fmt, fn = NULL_TREE, fn_fputc, fn_fputs, arg, call;
|
const char *fmt_str = NULL;
|
const char *fmt_str = NULL;
|
|
|
/* If the return value is used, don't do the transformation. */
|
/* If the return value is used, don't do the transformation. */
|
if (! ignore)
|
if (! ignore)
|
return 0;
|
return 0;
|
|
|
/* Verify the required arguments in the original call. */
|
/* Verify the required arguments in the original call. */
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fp = TREE_VALUE (arglist);
|
fp = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fp)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fp)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
if (fcode == BUILT_IN_FPRINTF_CHK || fcode == BUILT_IN_VFPRINTF_CHK)
|
if (fcode == BUILT_IN_FPRINTF_CHK || fcode == BUILT_IN_VFPRINTF_CHK)
|
{
|
{
|
tree flag;
|
tree flag;
|
|
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
flag = TREE_VALUE (arglist);
|
flag = TREE_VALUE (arglist);
|
if (TREE_CODE (TREE_TYPE (flag)) != INTEGER_TYPE
|
if (TREE_CODE (TREE_TYPE (flag)) != INTEGER_TYPE
|
|| TREE_SIDE_EFFECTS (flag))
|
|| TREE_SIDE_EFFECTS (flag))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
}
|
}
|
|
|
if (! arglist)
|
if (! arglist)
|
return 0;
|
return 0;
|
fmt = TREE_VALUE (arglist);
|
fmt = TREE_VALUE (arglist);
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
|
return 0;
|
return 0;
|
arglist = TREE_CHAIN (arglist);
|
arglist = TREE_CHAIN (arglist);
|
|
|
/* Check whether the format is a literal string constant. */
|
/* Check whether the format is a literal string constant. */
|
fmt_str = c_getstr (fmt);
|
fmt_str = c_getstr (fmt);
|
if (fmt_str == NULL)
|
if (fmt_str == NULL)
|
return NULL_TREE;
|
return NULL_TREE;
|
|
|
if (fcode == BUILT_IN_FPRINTF_UNLOCKED)
|
if (fcode == BUILT_IN_FPRINTF_UNLOCKED)
|
{
|
{
|
/* If we're using an unlocked function, assume the other
|
/* If we're using an unlocked function, assume the other
|
unlocked functions exist explicitly. */
|
unlocked functions exist explicitly. */
|
fn_fputc = built_in_decls[BUILT_IN_FPUTC_UNLOCKED];
|
fn_fputc = built_in_decls[BUILT_IN_FPUTC_UNLOCKED];
|
fn_fputs = built_in_decls[BUILT_IN_FPUTS_UNLOCKED];
|
fn_fputs = built_in_decls[BUILT_IN_FPUTS_UNLOCKED];
|
}
|
}
|
else
|
else
|
{
|
{
|
fn_fputc = implicit_built_in_decls[BUILT_IN_FPUTC];
|
fn_fputc = implicit_built_in_decls[BUILT_IN_FPUTC];
|
fn_fputs = implicit_built_in_decls[BUILT_IN_FPUTS];
|
fn_fputs = implicit_built_in_decls[BUILT_IN_FPUTS];
|
}
|
}
|
|
|
if (!init_target_chars())
|
if (!init_target_chars())
|
return 0;
|
return 0;
|
|
|
/* If the format doesn't contain % args or %%, use strcpy. */
|
/* If the format doesn't contain % args or %%, use strcpy. */
|
if (strchr (fmt_str, target_percent) == NULL)
|
if (strchr (fmt_str, target_percent) == NULL)
|
{
|
{
|
if (fcode != BUILT_IN_VFPRINTF && fcode != BUILT_IN_VFPRINTF_CHK
|
if (fcode != BUILT_IN_VFPRINTF && fcode != BUILT_IN_VFPRINTF_CHK
|
&& arglist)
|
&& arglist)
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "", fprintf does nothing. */
|
/* If the format specifier was "", fprintf does nothing. */
|
if (fmt_str[0] == '\0')
|
if (fmt_str[0] == '\0')
|
{
|
{
|
/* If FP has side-effects, just wait until gimplification is
|
/* If FP has side-effects, just wait until gimplification is
|
done. */
|
done. */
|
if (TREE_SIDE_EFFECTS (fp))
|
if (TREE_SIDE_EFFECTS (fp))
|
return 0;
|
return 0;
|
|
|
return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), 0);
|
return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), 0);
|
}
|
}
|
|
|
/* When "string" doesn't contain %, replace all cases of
|
/* When "string" doesn't contain %, replace all cases of
|
fprintf (fp, string) with fputs (string, fp). The fputs
|
fprintf (fp, string) with fputs (string, fp). The fputs
|
builtin will take care of special cases like length == 1. */
|
builtin will take care of special cases like length == 1. */
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
arglist = tree_cons (NULL_TREE, fmt, arglist);
|
fn = fn_fputs;
|
fn = fn_fputs;
|
}
|
}
|
|
|
/* The other optimizations can be done only on the non-va_list variants. */
|
/* The other optimizations can be done only on the non-va_list variants. */
|
else if (fcode == BUILT_IN_VFPRINTF || fcode == BUILT_IN_VFPRINTF_CHK)
|
else if (fcode == BUILT_IN_VFPRINTF || fcode == BUILT_IN_VFPRINTF_CHK)
|
return 0;
|
return 0;
|
|
|
/* If the format specifier was "%s", call __builtin_fputs (arg, fp). */
|
/* If the format specifier was "%s", call __builtin_fputs (arg, fp). */
|
else if (strcmp (fmt_str, target_percent_s) == 0)
|
else if (strcmp (fmt_str, target_percent_s) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| ! POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (arglist)))
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
fn = fn_fputs;
|
fn = fn_fputs;
|
}
|
}
|
|
|
/* If the format specifier was "%c", call __builtin_fputc (arg, fp). */
|
/* If the format specifier was "%c", call __builtin_fputc (arg, fp). */
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
else if (strcmp (fmt_str, target_percent_c) == 0)
|
{
|
{
|
if (! arglist
|
if (! arglist
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != INTEGER_TYPE
|
|| TREE_CHAIN (arglist))
|
|| TREE_CHAIN (arglist))
|
return 0;
|
return 0;
|
arg = TREE_VALUE (arglist);
|
arg = TREE_VALUE (arglist);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = build_tree_list (NULL_TREE, fp);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
arglist = tree_cons (NULL_TREE, arg, arglist);
|
fn = fn_fputc;
|
fn = fn_fputc;
|
}
|
}
|
|
|
if (!fn)
|
if (!fn)
|
return 0;
|
return 0;
|
|
|
call = build_function_call_expr (fn, arglist);
|
call = build_function_call_expr (fn, arglist);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), call);
|
return fold_convert (TREE_TYPE (TREE_TYPE (fndecl)), call);
|
}
|
}
|
|
|
/* Initialize format string characters in the target charset. */
|
/* Initialize format string characters in the target charset. */
|
|
|
static bool
|
static bool
|
init_target_chars (void)
|
init_target_chars (void)
|
{
|
{
|
static bool init;
|
static bool init;
|
if (!init)
|
if (!init)
|
{
|
{
|
target_newline = lang_hooks.to_target_charset ('\n');
|
target_newline = lang_hooks.to_target_charset ('\n');
|
target_percent = lang_hooks.to_target_charset ('%');
|
target_percent = lang_hooks.to_target_charset ('%');
|
target_c = lang_hooks.to_target_charset ('c');
|
target_c = lang_hooks.to_target_charset ('c');
|
target_s = lang_hooks.to_target_charset ('s');
|
target_s = lang_hooks.to_target_charset ('s');
|
if (target_newline == 0 || target_percent == 0 || target_c == 0
|
if (target_newline == 0 || target_percent == 0 || target_c == 0
|
|| target_s == 0)
|
|| target_s == 0)
|
return false;
|
return false;
|
|
|
target_percent_c[0] = target_percent;
|
target_percent_c[0] = target_percent;
|
target_percent_c[1] = target_c;
|
target_percent_c[1] = target_c;
|
target_percent_c[2] = '\0';
|
target_percent_c[2] = '\0';
|
|
|
target_percent_s[0] = target_percent;
|
target_percent_s[0] = target_percent;
|
target_percent_s[1] = target_s;
|
target_percent_s[1] = target_s;
|
target_percent_s[2] = '\0';
|
target_percent_s[2] = '\0';
|
|
|
target_percent_s_newline[0] = target_percent;
|
target_percent_s_newline[0] = target_percent;
|
target_percent_s_newline[1] = target_s;
|
target_percent_s_newline[1] = target_s;
|
target_percent_s_newline[2] = target_newline;
|
target_percent_s_newline[2] = target_newline;
|
target_percent_s_newline[3] = '\0';
|
target_percent_s_newline[3] = '\0';
|
|
|
init = true;
|
init = true;
|
}
|
}
|
return true;
|
return true;
|
}
|
}
|
|
|
