gcc/testsuite/gcc.dg/pr59523.c

   1 /* PR tree-optimization/59523 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O3" } */
   4 /* { dg-additional-options "-mavx2" { target { i?86-*-* x86_64-*-* } } } */
   5
   6 int *
   7 foo (int a, int *b, int *c, int *d)
   8 {
   9   int i, *r = __builtin_alloca (a * sizeof (int));
  10   __builtin_memcpy (r, d, a * sizeof (int));
  11   for (i = 0; i < 64; i++)
  12     c[i] += b[i];
  13   for (i = 0; i < a; i++)
  14     if (r[i] == 0)
  15       r[i] = 1;
  16   return r;
  17 }