gcc/testsuite/gcc.dg/vect/vect-early-break_128.c

   1 /* { dg-do compile } */
   2 /* { dg-add-options vect_early_break } */
   3 /* { dg-require-effective-target vect_early_break } */
   4 /* { dg-require-effective-target vect_int } */
   5
   6 /* { dg-final { scan-tree-dump "vectorizing stmts using SLP" "vect" } } */
   7 /* { dg-final { scan-tree-dump "Loop contains only SLP stmts" "vect" } } */
   8
   9 #ifndef N
  10 #define N 800
  11 #endif
  12 unsigned vect_a[N];
  13 unsigned vect_b[N];
  14
  15 unsigned test4(unsigned x)
  16 {
  17  unsigned ret = 0;
  18  for (int i = 0; i < N; i+=2)
  19  {
  20    vect_b[i] = x + i;
  21    vect_b[i+1] = x + i+1;
  22    if (vect_a[i]*2 != x)
  23      break;
  24    if (vect_a[i+1]*2 != x)
  25      break;
  26    vect_a[i] = x;
  27    vect_a[i+1] = x;
  28
  29  }
  30  return ret;
  31 }