gcc/generic-match-head.c

   1 /* Preamble and helpers for the autogenerated generic-match.c file.
   2    Copyright (C) 2014-2017 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 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "backend.h"
  24 #include "target.h"
  25 #include "rtl.h"
  26 #include "tree.h"
  27 #include "gimple.h"
  28 #include "ssa.h"
  29 #include "cgraph.h"
  30 #include "fold-const.h"
  31 #include "stor-layout.h"
  32 #include "tree-dfa.h"
  33 #include "builtins.h"
  34 #include "case-cfn-macros.h"
  35 #include "gimplify.h"
  36
  37
  38 /* Routine to determine if the types T1 and T2 are effectively
  39    the same for GENERIC.  If T1 or T2 is not a type, the test
  40    applies to their TREE_TYPE.  */
  41
  42 static inline bool
  43 types_match (tree t1, tree t2)
  44 {
  45   if (!TYPE_P (t1))
  46     t1 = TREE_TYPE (t1);
  47   if (!TYPE_P (t2))
  48     t2 = TREE_TYPE (t2);
  49
  50   return TYPE_MAIN_VARIANT (t1) == TYPE_MAIN_VARIANT (t2);
  51 }
  52
  53 /* Return if T has a single use.  For GENERIC, we assume this is
  54    always true.  */
  55
  56 static inline bool
  57 single_use (tree t ATTRIBUTE_UNUSED)
  58 {
  59   return true;
  60 }
  61
  62 /* Return true if math operations should be canonicalized,
  63    e.g. sqrt(sqrt(x)) -> pow(x, 0.25).  */
  64
  65 static inline bool
  66 canonicalize_math_p ()
  67 {
  68   return true;
  69 }