1 /* Convert language-specific tree expression to rtl instructions,
3 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
26 #include "coretypes.h"
37 /* Hook used by output_constant to expand language-specific
41 cplus_expand_constant (cst)
44 switch (TREE_CODE (cst))
48 tree type = TREE_TYPE (cst);
51 /* Find the member. */
52 member = PTRMEM_CST_MEMBER (cst);
54 if (TREE_CODE (member) == FIELD_DECL)
56 /* Find the offset for the field. */
57 tree offset = byte_position (member);
58 cst = fold (build1 (NOP_EXPR, type, offset));
65 expand_ptrmemfunc_cst (cst, &delta, &pfn);
66 cst = build_ptrmemfunc1 (type, delta, pfn);
72 /* There's nothing to do. */
79 /* Hook used by expand_expr to expand language-specific tree codes. */
82 cxx_expand_expr (exp, target, tmode, modifier)
85 enum machine_mode tmode;
86 int modifier; /* Actually an enum expand_modifier. */
88 tree type = TREE_TYPE (exp);
89 register enum machine_mode mode = TYPE_MODE (type);
90 register enum tree_code code = TREE_CODE (exp);
93 /* No sense saving up arithmetic to be done
94 if it's all in the wrong mode to form part of an address.
95 And force_operand won't know whether to sign-extend or zero-extend. */
97 if (mode != Pmode && modifier == EXPAND_SUM)
98 modifier = EXPAND_NORMAL;
103 return expand_expr (cplus_expand_constant (exp),
104 target, tmode, modifier);
107 /* Offset refs should not make it through to here. */
112 expand_expr (TREE_OPERAND (exp, 0), const0_rtx, VOIDmode, 0);
115 case MUST_NOT_THROW_EXPR:
116 expand_eh_region_start ();
117 ret = expand_expr (TREE_OPERAND (exp, 0), target, tmode, modifier);
118 expand_eh_region_end_must_not_throw (build_call (terminate_node, 0));
121 case EMPTY_CLASS_EXPR:
122 /* We don't need to generate any code for an empty class. */
126 return expand_expr (BASELINK_FUNCTIONS (exp), target, tmode,
130 return c_expand_expr (exp, target, tmode, modifier);