gcc/tree-ssa.h

   1 /* Header file for any pass which requires SSA routines.
   2    Copyright (C) 2013 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GCC_TREE_SSA_H
  21 #define GCC_TREE_SSA_H
  22
  23 #include "bitmap.h"
  24 #include "sbitmap.h"
  25 #include "gimple.h"
  26 #include "gimple-ssa.h"
  27 #include "cgraph.h"
  28 #include "tree-cfgcleanup.h"
  29 #include "tree-cfg.h"
  30 #include "tree-phinodes.h"
  31 #include "ssa-iterators.h"
  32 #include "tree-ssanames.h"
  33 #include "tree-ssa-dom.h"
  34 #include "tree-ssa-threadedge.h"
  35 #include "tree-ssa-address.h"
  36 #include "tree-ssa-loop.h"
  37 #include "tree-into-ssa.h"
  38 #include "gimple-low.h"
  39 #include "tree-dfa.h"
  40
  41 /* Mapping for redirected edges.  */
  42 struct _edge_var_map {
  43   tree result;                  /* PHI result.  */
  44   tree def;                     /* PHI arg definition.  */
  45   source_location locus;        /* PHI arg location.  */
  46 };
  47 typedef struct _edge_var_map edge_var_map;
  48
  49 /* A vector of var maps.  */
  50 typedef vec<edge_var_map, va_heap, vl_embed> edge_var_map_vector;
  51
  52
  53 extern void redirect_edge_var_map_add (edge, tree, tree, source_location);
  54 extern void redirect_edge_var_map_clear (edge);
  55 extern void redirect_edge_var_map_dup (edge, edge);
  56 extern edge_var_map_vector *redirect_edge_var_map_vector (edge);
  57 extern void redirect_edge_var_map_destroy (void);
  58 extern edge ssa_redirect_edge (edge, basic_block);
  59 extern void flush_pending_stmts (edge);
  60 extern void count_uses_and_derefs (tree, gimple, unsigned *, unsigned *,
  61                                    unsigned *);
  62 extern void gimple_replace_ssa_lhs (gimple, tree);
  63 extern tree target_for_debug_bind (tree);
  64 extern void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree);
  65 extern void insert_debug_temps_for_defs (gimple_stmt_iterator *);
  66 extern void reset_debug_uses (gimple);
  67 extern void release_defs_bitset (bitmap toremove);
  68 extern void verify_ssa (bool);
  69 extern void init_tree_ssa (struct function *);
  70 extern void delete_tree_ssa (void);
  71 extern bool tree_ssa_useless_type_conversion (tree);
  72 extern tree tree_ssa_strip_useless_type_conversions (tree);
  73
  74 extern bool ssa_undefined_value_p (tree);
  75 extern void execute_update_addresses_taken (void);
  76
  77 /* Given an edge_var_map V, return the PHI arg definition.  */
  78
  79 static inline tree
  80 redirect_edge_var_map_def (edge_var_map *v)
  81 {
  82   return v->def;
  83 }
  84
  85 /* Given an edge_var_map V, return the PHI result.  */
  86
  87 static inline tree
  88 redirect_edge_var_map_result (edge_var_map *v)
  89 {
  90   return v->result;
  91 }
  92
  93 /* Given an edge_var_map V, return the PHI arg location.  */
  94
  95 static inline source_location
  96 redirect_edge_var_map_location (edge_var_map *v)
  97 {
  98   return v->locus;
  99 }
 100
 101
 102 #endif /* GCC_TREE_SSA_H */