gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-29.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-details" } */
   3
   4 int flag, hoist, y, z;
   5
   6 void
   7 foo (void)
   8 {
   9   if (flag)
  10     y = hoist + 4;
  11   else
  12     flag = 888;
  13   z = hoist + 4;
  14   bark ();
  15 }
  16
  17 /* We should see the partial redundancy of hoist + 4, not being confused
  18    about bark () possibly clobbering hoist.  */
  19
  20 /* { dg-final { scan-tree-dump "Replaced hoist" "pre" } } */
  21 /* { dg-final { cleanup-tree-dump "pre" } } */