gcc/testsuite/gcc.dg/autopar/pr39500-1.c

   1 /* pr39500: autopar fails to parallel */
   2 /* origin: nemokingdom@gmail.com(LiFeng) */
   3 /* { dg-do compile } */
   4 /* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops-details" } */
   5
   6 void abort (void);
   7
   8 int main (void)
   9 {
  10   int i;
  11   int x[100000];
  12
  13   for (i = 0; i < 10000; i++)
  14     x[i] = x[i+10000];
  15
  16   for (i = 0; i < 10000; i++)
  17     {
  18       if (x[i] != x[i+10000])
  19        abort ();
  20     }
  21
  22   return 0;
  23 }
  24
  25 /* Check that the first loop in parloop got parallelized.  */
  26
  27 /* { dg-final { scan-tree-dump-times "SUCCESS: may be parallelized" 1 "parloops" } } */