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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [cp/] [expr.c] - Rev 540
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/* Convert language-specific tree expression to rtl instructions, for GNU compiler. Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 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 "rtl.h" #include "tree.h" #include "flags.h" #include "expr.h" #include "cp-tree.h" #include "toplev.h" #include "except.h" #include "tm_p.h" /* Expand C++-specific constants. Currently, this means PTRMEM_CST. */ tree cplus_expand_constant (tree cst) { switch (TREE_CODE (cst)) { case PTRMEM_CST: { tree type = TREE_TYPE (cst); tree member; /* Find the member. */ member = PTRMEM_CST_MEMBER (cst); if (TREE_CODE (member) == FIELD_DECL) { /* Find the offset for the field. */ cst = byte_position (member); while (!same_type_p (DECL_CONTEXT (member), TYPE_PTRMEM_CLASS_TYPE (type))) { /* The MEMBER must have been nestled within an anonymous aggregate contained in TYPE. Find the anonymous aggregate. */ member = lookup_anon_field (TYPE_PTRMEM_CLASS_TYPE (type), DECL_CONTEXT (member)); cst = size_binop (PLUS_EXPR, cst, byte_position (member)); } cst = fold (build_nop (type, cst)); } else { tree delta; tree pfn; expand_ptrmemfunc_cst (cst, &delta, &pfn); cst = build_ptrmemfunc1 (type, delta, pfn); } } break; default: /* There's nothing to do. */ break; } return cst; }
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