| /* 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; |
| } |