gcc/gimple-ssa.h

   1 /* Header file for routines that straddle the border between GIMPLE and
   2    SSA in gimple.
   3    Copyright (C) 2009-2013 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC 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 3, or (at your option)
  10 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; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_GIMPLE_SSA_H
  22 #define GCC_GIMPLE_SSA_H
  23
  24 /* Return the set of VUSE operand for statement G.  */
  25
  26 static inline use_operand_p
  27 gimple_vuse_op (const_gimple g)
  28 {
  29   struct use_optype_d *ops;
  30   if (!gimple_has_mem_ops (g))
  31     return NULL_USE_OPERAND_P;
  32   ops = g->gsops.opbase.use_ops;
  33   if (ops
  34       && USE_OP_PTR (ops)->use == &g->gsmembase.vuse)
  35     return USE_OP_PTR (ops);
  36   return NULL_USE_OPERAND_P;
  37 }
  38
  39 /* Return the set of VDEF operand for statement G.  */
  40
  41 static inline def_operand_p
  42 gimple_vdef_op (gimple g)
  43 {
  44   if (!gimple_has_mem_ops (g))
  45     return NULL_DEF_OPERAND_P;
  46   if (g->gsmembase.vdef)
  47     return &g->gsmembase.vdef;
  48   return NULL_DEF_OPERAND_P;
  49 }
  50
  51 /* Mark statement S as modified, and update it.  */
  52
  53 static inline void
  54 update_stmt (gimple s)
  55 {
  56   if (gimple_has_ops (s))
  57     {
  58       gimple_set_modified (s, true);
  59       update_stmt_operands (s);
  60     }
  61 }
  62
  63 /* Update statement S if it has been optimized.  */
  64
  65 static inline void
  66 update_stmt_if_modified (gimple s)
  67 {
  68   if (gimple_modified_p (s))
  69     update_stmt_operands (s);
  70 }
  71
  72
  73 #endif /* GCC_GIMPLE_SSA_H */