gcc/testsuite/gcc.dg/tree-ssa/pr81620-1.c

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