gcc/tree-alias-type.h

   1 /* Tree based linear points-to analysis
   2    Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   3    Contributed by Daniel Berlin <dberlin@dberlin.org>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 GCC 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 GCC; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20 */
  21
  22 #ifndef TREE_ALIAS_TYPE_H
  23 #define TREE_ALIAS_TYPE_H
  24
  25 #include "varray.h"
  26
  27 union alias_var_def;
  28 struct aterm_;
  29 struct aterm_list_a;
  30
  31 enum alias_var_kind
  32 {
  33   ATERM_AVAR
  34 };
  35
  36 struct alias_var_common  GTY (())
  37 {
  38   enum alias_var_kind kind;
  39   unsigned int varnum;
  40   tree decl;
  41 };
  42
  43 struct alias_var_aterm GTY (())
  44 {
  45   struct alias_var_common common;
  46   struct aterm_ * GTY((skip (""))) term;
  47   struct aterm_list_a *GTY ((skip (""))) ptset;
  48 };
  49
  50 union alias_var_def GTY ((desc ("%0.common.kind")))
  51 {
  52   struct alias_var_common GTY ((tag ("-1"))) common;
  53   struct alias_var_aterm GTY ((tag ("ATERM_AVAR"))) aterm;
  54 };
  55
  56 typedef union alias_var_def *alias_var;
  57
  58 #define ALIAS_VAR_KIND(x) ((x)->common.kind)
  59 #define ALIAS_VAR_VARNUM(x) ((x)->common.varnum)
  60 #define ALIAS_VAR_DECL(x) ((x)->common.decl)
  61 #define ALIAS_VAR_ATERM(x) ((x)->aterm.term)
  62 #define ALIAS_VAR_PTSET(x) ((x)->aterm.ptset)
  63 union alias_type_def;
  64 typedef union alias_type_def *alias_type;
  65
  66 alias_var alias_var_new_with_aterm (tree, struct aterm_ *);
  67
  68 #endif /* TREE_ALIAS_TYPE_H */