gcc/testsuite/gcc.dg/tree-ssa/pr81620-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -fno-tree-loop-vectorize -fdump-tree-pcom-details" } */
   3
   4 int a[200];
   5 char b;
   6 void abort (void);
   7
   8 int main() {
   9   int i;
  10   b = 100;
  11   for (; b; b--) {
  12     a[b] = 2;
  13     a[b + 2] = 1;
  14   }
  15
  16   if (a[0] != 0 || a[1] != 2 || a[2] != 2)
  17     abort ();
  18   for (i = 3; i < 103; i++)
  19     if (a[i] != 1)
  20     abort ();
  21
  22   return 0;
  23 }
  24
  25 /* { dg-final { scan-tree-dump-times "Store-stores chain" 1 "pcom" } } */