/* Convert language-specific tree expression to rtl instructions,
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/* Convert language-specific tree expression to rtl instructions,
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for GNU compiler.
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for GNU compiler.
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Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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2000, 2001, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
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2000, 2001, 2002, 2003, 2004, 2007 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
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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any later version.
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GCC is distributed in the hope that it will be useful,
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License 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 "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 "flags.h"
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#include "flags.h"
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#include "expr.h"
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#include "expr.h"
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#include "cp-tree.h"
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#include "cp-tree.h"
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#include "toplev.h"
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#include "toplev.h"
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#include "except.h"
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#include "except.h"
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#include "tm_p.h"
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#include "tm_p.h"
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/* Expand C++-specific constants. Currently, this means PTRMEM_CST. */
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/* Expand C++-specific constants. Currently, this means PTRMEM_CST. */
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tree
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tree
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cplus_expand_constant (tree cst)
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cplus_expand_constant (tree cst)
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{
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{
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switch (TREE_CODE (cst))
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switch (TREE_CODE (cst))
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{
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{
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case PTRMEM_CST:
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case PTRMEM_CST:
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{
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{
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tree type = TREE_TYPE (cst);
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tree type = TREE_TYPE (cst);
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tree member;
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tree member;
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/* Find the member. */
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/* Find the member. */
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member = PTRMEM_CST_MEMBER (cst);
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member = PTRMEM_CST_MEMBER (cst);
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if (TREE_CODE (member) == FIELD_DECL)
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if (TREE_CODE (member) == FIELD_DECL)
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{
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{
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/* Find the offset for the field. */
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/* Find the offset for the field. */
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cst = byte_position (member);
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cst = byte_position (member);
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while (!same_type_p (DECL_CONTEXT (member),
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while (!same_type_p (DECL_CONTEXT (member),
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TYPE_PTRMEM_CLASS_TYPE (type)))
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TYPE_PTRMEM_CLASS_TYPE (type)))
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{
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{
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/* The MEMBER must have been nestled within an
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/* The MEMBER must have been nestled within an
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anonymous aggregate contained in TYPE. Find the
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anonymous aggregate contained in TYPE. Find the
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anonymous aggregate. */
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anonymous aggregate. */
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member = lookup_anon_field (TYPE_PTRMEM_CLASS_TYPE (type),
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member = lookup_anon_field (TYPE_PTRMEM_CLASS_TYPE (type),
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DECL_CONTEXT (member));
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DECL_CONTEXT (member));
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cst = size_binop (PLUS_EXPR, cst, byte_position (member));
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cst = size_binop (PLUS_EXPR, cst, byte_position (member));
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}
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}
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cst = fold (build_nop (type, cst));
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cst = fold (build_nop (type, cst));
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}
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}
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else
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else
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{
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{
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tree delta;
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tree delta;
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tree pfn;
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tree pfn;
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expand_ptrmemfunc_cst (cst, &delta, &pfn);
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expand_ptrmemfunc_cst (cst, &delta, &pfn);
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cst = build_ptrmemfunc1 (type, delta, pfn);
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cst = build_ptrmemfunc1 (type, delta, pfn);
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}
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}
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}
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}
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break;
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break;
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default:
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default:
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/* There's nothing to do. */
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/* There's nothing to do. */
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break;
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break;
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}
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}
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return cst;
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return cst;
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}
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}
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