gcc/testsuite/gcc.dg/pr27331.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-vectorize" } */
   3
   4 struct funny_match
   5 {
   6   int this, other;
   7 };
   8
   9 typedef struct rtx {
  10     int code;
  11 } *rtx;
  12
  13 extern rtx recog_operand[];
  14 extern int which_alternative;
  15 extern int nalternatives;
  16
  17 int
  18 constrain_operands (insn_code_num, strict)
  19      int insn_code_num;
  20      int strict;
  21 {
  22   char *constraints[10];
  23   struct funny_match funny_match[10];
  24   register int c;
  25   int funny_match_index;
  26
  27   which_alternative = 0;
  28
  29   while (which_alternative < nalternatives)
  30     {
  31       register int opno;
  32       register char *p = constraints[opno];
  33       int lose = 0;
  34       funny_match_index = 0;
  35
  36       while (*p && (c = *p++) != ',')
  37         funny_match[funny_match_index++].other = c - '0';
  38
  39       if ((((recog_operand[opno])->code) == 12))
  40         lose = 1;
  41
  42       if (!lose)
  43         {
  44           while (--funny_match_index >= 0)
  45             recog_operand[funny_match[funny_match_index].other]
  46                     = recog_operand[funny_match[funny_match_index].this];
  47           return 1;
  48         }
  49       which_alternative++;
  50     }
  51
  52   if (strict == 0)
  53     return constrain_operands (insn_code_num, -1);
  54   return 0;
  55 }
  56