gcc/testsuite/gcc.dg/vect/vect-123.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target vect_int } */
   3 /* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
   4
   5 int x[4092];
   6 int y[1024];
   7
   8 void foo (int s)
   9 {
  10   int i, j;
  11   for (i = 0, j = 0; j < 1023; i += s, j++)
  12     y[j] += x[i];
  13 }
  14
  15 /* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" } } */
  16 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */