gcc/cp/cp-lang.c

   1 /* Language-dependent hooks for C++.
   2    Copyright 2001 Free Software Foundation, Inc.
   3    Contributed by Alexandre Oliva  <aoliva@redhat.com>
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "tree.h"
  25 #include "cp-tree.h"
  26 #include "c-common.h"
  27 #include "toplev.h"
  28 #include "langhooks.h"
  29 #include "langhooks-def.h"
  30
  31 static HOST_WIDE_INT cxx_get_alias_set PARAMS ((tree));
  32
  33 #undef LANG_HOOKS_NAME
  34 #define LANG_HOOKS_NAME "GNU C++"
  35 #undef LANG_HOOKS_INIT
  36 #define LANG_HOOKS_INIT cxx_init
  37 #undef LANG_HOOKS_FINISH
  38 #define LANG_HOOKS_FINISH cxx_finish
  39 #undef LANG_HOOKS_CLEAR_BINDING_STACK
  40 #define LANG_HOOKS_CLEAR_BINDING_STACK pop_everything
  41 #undef LANG_HOOKS_INIT_OPTIONS
  42 #define LANG_HOOKS_INIT_OPTIONS cxx_init_options
  43 #undef LANG_HOOKS_DECODE_OPTION
  44 #define LANG_HOOKS_DECODE_OPTION cxx_decode_option
  45 #undef LANG_HOOKS_POST_OPTIONS
  46 #define LANG_HOOKS_POST_OPTIONS cxx_post_options
  47 #undef LANG_HOOKS_GET_ALIAS_SET
  48 #define LANG_HOOKS_GET_ALIAS_SET cxx_get_alias_set
  49 #undef LANG_HOOKS_EXPAND_CONSTANT
  50 #define LANG_HOOKS_EXPAND_CONSTANT cplus_expand_constant
  51 #undef LANG_HOOKS_SAFE_FROM_P
  52 #define LANG_HOOKS_SAFE_FROM_P c_safe_from_p
  53 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  54 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL cxx_dup_lang_specific_decl
  55 #undef LANG_HOOKS_PRINT_STATISTICS
  56 #define LANG_HOOKS_PRINT_STATISTICS cxx_print_statistics
  57 #undef LANG_HOOKS_PRINT_XNODE
  58 #define LANG_HOOKS_PRINT_XNODE cxx_print_xnode
  59 #undef LANG_HOOKS_PRINT_DECL
  60 #define LANG_HOOKS_PRINT_DECL cxx_print_decl
  61 #undef LANG_HOOKS_PRINT_TYPE
  62 #define LANG_HOOKS_PRINT_TYPE cxx_print_type
  63 #undef LANG_HOOKS_PRINT_IDENTIFIER
  64 #define LANG_HOOKS_PRINT_IDENTIFIER cxx_print_identifier
  65 #undef LANG_HOOKS_SET_YYDEBUG
  66 #define LANG_HOOKS_SET_YYDEBUG cxx_set_yydebug
  67
  68 #undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
  69 #define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES \
  70   cp_walk_subtrees
  71 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
  72 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
  73   cp_cannot_inline_tree_fn
  74 #undef LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS
  75 #define LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS \
  76   cp_add_pending_fn_decls
  77 #undef LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P
  78 #define LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P \
  79   cp_is_overload_p
  80 #undef LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P
  81 #define LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P \
  82   cp_auto_var_in_fn_p
  83 #undef LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING
  84 #define LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING \
  85   cp_copy_res_decl_for_inlining
  86 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
  87 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P anon_aggr_type_p
  88 #undef LANG_HOOKS_TREE_INLINING_START_INLINING
  89 #define LANG_HOOKS_TREE_INLINING_START_INLINING cp_start_inlining
  90 #undef LANG_HOOKS_TREE_INLINING_END_INLINING
  91 #define LANG_HOOKS_TREE_INLINING_END_INLINING cp_end_inlining
  92 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
  93 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN cp_dump_tree
  94 #undef LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN
  95 #define LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN cp_type_quals
  96
  97 /* Each front end provides its own hooks, for toplev.c.  */
  98 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  99
 100 /* Special routine to get the alias set for C++.  */
 101
 102 static HOST_WIDE_INT
 103 cxx_get_alias_set (t)
 104      tree t;
 105 {
 106   /* It's not yet safe to use alias sets for classes in C++ because
 107      the TYPE_FIELDs list for a class doesn't mention base classes.  */
 108   if (AGGREGATE_TYPE_P (t))
 109     return 0;
 110
 111   return c_common_get_alias_set (t);
 112 }