gcc/testsuite/gcc.dg/autopar/pr46194.c

   1 /* PR tree-optimization/46194 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -ftree-parallelize-loops=2 -fdump-tree-parloops2-details" } */
   4
   5 #define N 1000
   6 int a[N];
   7
   8 int foo (void)
   9 {
  10   int j;
  11   int i;
  12
  13   /* This is not blocked as it is not profitable.  */
  14   for (i = 0; i < N; i++)
  15     for (j = 0; j < N; j++)
  16       a[j] = a[i] + 1;
  17
  18   return a[0];
  19 }
  20
  21 /* This loop cannot be parallelized due to a dependence.  */
  22
  23 /* { dg-final { scan-tree-dump-times "SUCCESS: may be parallelized" 0 "parloops2" } } */