gcc/testsuite/gcc.dg/tree-ssa/ldist-15.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fdump-tree-ldist-details" } */
   3
   4 int x[1000];
   5
   6 void foo (int n)
   7 {
   8   int i;
   9
  10   for (i = 0; i < n; ++i)
  11     {
  12       x[2*i] = 0;
  13       x[2*i + 1] = 1;
  14     }
  15 }
  16
  17 /* We should not apply loop distribution as it is not beneficial from
  18    a data locality point of view.  Also it is not possible to generate
  19    a memset (0) as the write has a stride of 2.  */
  20
  21 /* { dg-final { scan-tree-dump-not "distributed: split to" "ldist" } } */
  22 /* { dg-final { scan-tree-dump-not "__builtin_memset" "ldist" } } */