gcc/testsuite/gcc.dg/tree-ssa/pr81627.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -fno-tree-loop-vectorize -fdump-tree-pcom-details" } */
   3
   4 int a, b, c, d[6], e = 3, f;
   5
   6 void abort (void);
   7 void fn1 ()
   8 {
   9   for (b = 1; b < 5; b++)
  10     {
  11       for (c = 0; c < 5; c++)
  12         d[b] = e;
  13       if (a)
  14         f++;
  15       d[b + 1] = 1;
  16     }
  17 }
  18
  19 int main ()
  20 {
  21   fn1 ();
  22   if (d[0] != 0 || d[1] != 3 || d[2] != 3
  23       || d[3] != 3 || d[4] != 3 || d[5] != 1)
  24     abort ();
  25
  26   return 0;
  27 }
  28 /* { dg-final { scan-tree-dump-times "Store-stores chain" 1 "pcom" } } */