gcc/testsuite/gcc.dg/tree-ssa/ldist-14.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-strict-aliasing -ftree-loop-distribution -fdump-tree-ldist-details" } */
   3
   4 struct desc {
   5   int i;
   6   void * __restrict__ data;
   7   int j;
   8 } a, b;
   9
  10 float foo (int n)
  11 {
  12   int i;
  13   float * __restrict__ x, * __restrict__ y, tmp = 0.0;
  14   x = (float * __restrict__)a.data;
  15   y = (float * __restrict__)b.data;
  16   for (i = 0; i < n; ++i)
  17     {
  18       x[i] = 0.0;
  19       tmp += y[i];
  20     }
  21   return tmp;
  22 }
  23
  24 /* Distributing the loop doesn't expose more parallelism.  */
  25 /* { dg-final { scan-tree-dump-not "Loop 1 distributed: split to 2 loops" "ldist" } } */