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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [c-objc-common.c] - Rev 841
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/* Some code common to C and ObjC front ends. Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include "config.h" #include "system.h" #include "coretypes.h" #include "tm.h" #include "tree.h" #include "rtl.h" #include "insn-config.h" #include "integrate.h" #include "c-tree.h" #include "c-pretty-print.h" #include "function.h" #include "flags.h" #include "toplev.h" #include "diagnostic.h" #include "tree-inline.h" #include "varray.h" #include "ggc.h" #include "langhooks.h" #include "tree-mudflap.h" #include "target.h" #include "c-objc-common.h" static bool c_tree_printer (pretty_printer *, text_info *, const char *, int, bool, bool, bool); bool c_missing_noreturn_ok_p (tree decl) { /* A missing noreturn is not ok for freestanding implementations and ok for the `main' function in hosted implementations. */ return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl)); } /* We want to inline `extern inline' functions even if this would violate inlining limits. Some glibc and linux constructs depend on such functions always being inlined when optimizing. */ int c_disregard_inline_limits (tree fn) { if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL) return 1; return (!flag_really_no_inline && DECL_DECLARED_INLINE_P (fn) && DECL_EXTERNAL (fn)); } int c_cannot_inline_tree_fn (tree *fnp) { tree fn = *fnp; bool do_warning = (warn_inline && DECL_INLINE (fn) && DECL_DECLARED_INLINE_P (fn) && !DECL_IN_SYSTEM_HEADER (fn)); if (flag_really_no_inline && lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) == NULL) { if (do_warning) warning (OPT_Winline, "function %q+F can never be inlined because it " "is suppressed using -fno-inline", fn); goto cannot_inline; } /* Don't auto-inline anything that might not be bound within this unit of translation. */ if (!DECL_DECLARED_INLINE_P (fn) && !targetm.binds_local_p (fn)) { if (do_warning) warning (OPT_Winline, "function %q+F can never be inlined because it " "might not be bound within this unit of translation", fn); goto cannot_inline; } if (!function_attribute_inlinable_p (fn)) { if (do_warning) warning (OPT_Winline, "function %q+F can never be inlined because it " "uses attributes conflicting with inlining", fn); goto cannot_inline; } return 0; cannot_inline: DECL_UNINLINABLE (fn) = 1; return 1; } /* Called from check_global_declarations. */ bool c_warn_unused_global_decl (tree decl) { if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) return false; if (DECL_IN_SYSTEM_HEADER (decl)) return false; return true; } /* Initialization common to C and Objective-C front ends. */ bool c_objc_common_init (void) { c_init_decl_processing (); if (c_common_init () == false) return false; /* These were not defined in the Objective-C front end, but I'm putting them here anyway. The diagnostic format decoder might want an enhanced ObjC implementation. */ diagnostic_format_decoder (global_dc) = &c_tree_printer; /* If still unspecified, make it match -std=c99 (allowing for -pedantic-errors). */ if (mesg_implicit_function_declaration < 0) { if (flag_isoc99) mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1; else mesg_implicit_function_declaration = 0; } return true; } /* Called during diagnostic message formatting process to print a source-level entity onto BUFFER. The meaning of the format specifiers is as follows: %D: a general decl, %E: an identifier or expression, %F: a function declaration, %T: a type. These format specifiers form a subset of the format specifiers set used by the C++ front-end. Please notice when called, the `%' part was already skipped by the diagnostic machinery. */ static bool c_tree_printer (pretty_printer *pp, text_info *text, const char *spec, int precision, bool wide, bool set_locus, bool hash) { tree t = va_arg (*text->args_ptr, tree); tree name; const char *n = "({anonymous})"; c_pretty_printer *cpp = (c_pretty_printer *) pp; pp->padding = pp_none; if (precision != 0 || wide || hash) return false; if (set_locus && text->locus) *text->locus = DECL_SOURCE_LOCATION (t); switch (*spec) { case 'D': if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) { t = DECL_DEBUG_EXPR (t); if (!DECL_P (t)) { pp_c_expression (cpp, t); return true; } } /* FALLTHRU */ case 'F': if (DECL_NAME (t)) n = lang_hooks.decl_printable_name (t, 2); break; case 'T': gcc_assert (TYPE_P (t)); name = TYPE_NAME (t); if (name && TREE_CODE (name) == TYPE_DECL) { if (DECL_NAME (name)) pp_string (cpp, lang_hooks.decl_printable_name (name, 2)); else pp_type_id (cpp, t); return true; } else { pp_type_id (cpp, t); return true; } break; case 'E': if (TREE_CODE (t) == IDENTIFIER_NODE) n = IDENTIFIER_POINTER (t); else { pp_expression (cpp, t); return true; } break; default: return false; } pp_string (cpp, n); return true; } /* In C and ObjC, all decls have "C" linkage. */ bool has_c_linkage (tree decl ATTRIBUTE_UNUSED) { return true; } void c_initialize_diagnostics (diagnostic_context *context) { pretty_printer *base = context->printer; c_pretty_printer *pp = XNEW (c_pretty_printer); memcpy (pp_base (pp), base, sizeof (pretty_printer)); pp_c_pretty_printer_init (pp); context->printer = (pretty_printer *) pp; /* It is safe to free this object because it was previously XNEW()'d. */ XDELETE (base); } int c_types_compatible_p (tree x, tree y) { return comptypes (TYPE_MAIN_VARIANT (x), TYPE_MAIN_VARIANT (y)); } /* Determine if the type is a vla type for the backend. */ bool c_vla_unspec_p (tree x, tree fn ATTRIBUTE_UNUSED) { return c_vla_type_p (x); }
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