154 lines
5.4 KiB
C
154 lines
5.4 KiB
C
/* Language-dependent hooks for C++.
|
|
Copyright 2001, 2002 Free Software Foundation, Inc.
|
|
Contributed by Alexandre Oliva <aoliva@redhat.com>
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC 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 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC 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 GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include "config.h"
|
|
#include "system.h"
|
|
#include "tree.h"
|
|
#include "cp-tree.h"
|
|
#include "c-common.h"
|
|
#include "toplev.h"
|
|
#include "langhooks.h"
|
|
#include "langhooks-def.h"
|
|
|
|
static HOST_WIDE_INT cxx_get_alias_set PARAMS ((tree));
|
|
static tree cp_expr_size PARAMS ((tree));
|
|
static bool cp_var_mod_type_p PARAMS ((tree));
|
|
|
|
#undef LANG_HOOKS_NAME
|
|
#define LANG_HOOKS_NAME "GNU C++"
|
|
#undef LANG_HOOKS_INIT
|
|
#define LANG_HOOKS_INIT cxx_init
|
|
#undef LANG_HOOKS_FINISH
|
|
#define LANG_HOOKS_FINISH cxx_finish
|
|
#undef LANG_HOOKS_CLEAR_BINDING_STACK
|
|
#define LANG_HOOKS_CLEAR_BINDING_STACK pop_everything
|
|
#undef LANG_HOOKS_INIT_OPTIONS
|
|
#define LANG_HOOKS_INIT_OPTIONS cxx_init_options
|
|
#undef LANG_HOOKS_DECODE_OPTION
|
|
#define LANG_HOOKS_DECODE_OPTION cxx_decode_option
|
|
#undef LANG_HOOKS_POST_OPTIONS
|
|
#define LANG_HOOKS_POST_OPTIONS c_common_post_options
|
|
#undef LANG_HOOKS_GET_ALIAS_SET
|
|
#define LANG_HOOKS_GET_ALIAS_SET cxx_get_alias_set
|
|
#undef LANG_HOOKS_EXPAND_CONSTANT
|
|
#define LANG_HOOKS_EXPAND_CONSTANT cplus_expand_constant
|
|
#undef LANG_HOOKS_SAFE_FROM_P
|
|
#define LANG_HOOKS_SAFE_FROM_P c_safe_from_p
|
|
#undef LANG_HOOKS_PRINT_STATISTICS
|
|
#define LANG_HOOKS_PRINT_STATISTICS cxx_print_statistics
|
|
#undef LANG_HOOKS_PRINT_XNODE
|
|
#define LANG_HOOKS_PRINT_XNODE cxx_print_xnode
|
|
#undef LANG_HOOKS_PRINT_DECL
|
|
#define LANG_HOOKS_PRINT_DECL cxx_print_decl
|
|
#undef LANG_HOOKS_PRINT_TYPE
|
|
#define LANG_HOOKS_PRINT_TYPE cxx_print_type
|
|
#undef LANG_HOOKS_PRINT_IDENTIFIER
|
|
#define LANG_HOOKS_PRINT_IDENTIFIER cxx_print_identifier
|
|
#undef LANG_HOOKS_SET_YYDEBUG
|
|
#define LANG_HOOKS_SET_YYDEBUG cxx_set_yydebug
|
|
|
|
#undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
|
|
#define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES \
|
|
cp_walk_subtrees
|
|
#undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
|
|
#define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
|
|
cp_cannot_inline_tree_fn
|
|
#undef LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS
|
|
#define LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS \
|
|
cp_add_pending_fn_decls
|
|
#undef LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P
|
|
#define LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P \
|
|
cp_is_overload_p
|
|
#undef LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P
|
|
#define LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P \
|
|
cp_auto_var_in_fn_p
|
|
#undef LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING
|
|
#define LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING \
|
|
cp_copy_res_decl_for_inlining
|
|
#undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
|
|
#define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P anon_aggr_type_p
|
|
#undef LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P
|
|
#define LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P cp_var_mod_type_p
|
|
#undef LANG_HOOKS_TREE_INLINING_START_INLINING
|
|
#define LANG_HOOKS_TREE_INLINING_START_INLINING cp_start_inlining
|
|
#undef LANG_HOOKS_TREE_INLINING_END_INLINING
|
|
#define LANG_HOOKS_TREE_INLINING_END_INLINING cp_end_inlining
|
|
#undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
|
|
#define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN cp_dump_tree
|
|
#undef LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN
|
|
#define LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN cp_type_quals
|
|
#undef LANG_HOOKS_EXPR_SIZE
|
|
#define LANG_HOOKS_EXPR_SIZE cp_expr_size
|
|
|
|
/* Each front end provides its own hooks, for toplev.c. */
|
|
const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
|
|
|
|
/* Special routine to get the alias set for C++. */
|
|
|
|
static HOST_WIDE_INT
|
|
cxx_get_alias_set (t)
|
|
tree t;
|
|
{
|
|
/* It's not yet safe to use alias sets for classes in C++ because
|
|
the TYPE_FIELDs list for a class doesn't mention base classes. */
|
|
if (AGGREGATE_TYPE_P (t))
|
|
return 0;
|
|
|
|
return c_common_get_alias_set (t);
|
|
}
|
|
|
|
/* Langhook for expr_size: Tell the backend that the value of an expression
|
|
of non-POD class type does not include any tail padding; a derived class
|
|
might have allocated something there. */
|
|
|
|
static tree
|
|
cp_expr_size (exp)
|
|
tree exp;
|
|
{
|
|
if (CLASS_TYPE_P (TREE_TYPE (exp)))
|
|
{
|
|
/* This would be wrong for a type with virtual bases, but they should
|
|
not get here. */
|
|
return CLASSTYPE_SIZE_UNIT (TREE_TYPE (exp));
|
|
}
|
|
else
|
|
/* Use the default code. */
|
|
return lhd_expr_size (exp);
|
|
}
|
|
|
|
/* Returns true if T is a variably modified type, in the sense of C99.
|
|
This routine needs only check cases that cannot be handled by the
|
|
language-independent logic in tree-inline.c. */
|
|
|
|
static bool
|
|
cp_var_mod_type_p (tree type)
|
|
{
|
|
/* If TYPE is a pointer-to-member, it is variably modified if either
|
|
the class or the member are variably modified. */
|
|
if (TYPE_PTRMEM_P (type) || TYPE_PTRMEMFUNC_P (type))
|
|
return (variably_modified_type_p (TYPE_PTRMEM_CLASS_TYPE (type))
|
|
|| variably_modified_type_p (TYPE_PTRMEM_POINTED_TO_TYPE (type)));
|
|
|
|
/* All other types are not variably modified. */
|
|
return false;
|
|
}
|
|
|