gcc/testsuite/gcc.dg/tree-ssa/ssa-hoist-6.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-stats" } */
   3
   4 int a[1024];
   5 int b[1024], c[1024];
   6 void foo ()
   7 {
   8   for (int j = 0; j < 1024; ++j)
   9     {
  10       for (int i = 0; i < 1024; ++i)
  11         a[i] = j;
  12       b[j] = c[j];
  13     }
  14 }
  15
  16 /* We should not hoist/PRE the outer loop IV increment or the load
  17    from c across the inner loop.  */
  18
  19 /* { dg-final { scan-tree-dump-not "HOIST inserted" "pre" } } */