gcc/testsuite/gcc.dg/tree-ssa/20040305-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-cddce2 -fdump-tree-forwprop1-details" } */
   3
   4 int abarney[2];
   5 int afred[1];
   6
   7 void foo(int edx, int eax)
   8 {
   9   if (eax == 100)
  10     {
  11       if (edx == 1)
  12         {
  13           abarney[0] = 5;
  14           abarney[1] = 6;
  15         }
  16     }
  17   if (eax == 100)
  18     {
  19       if (-- edx == 0)
  20         afred[0] = 2;
  21     }
  22 }
  23
  24
  25 /* Verify that we did a forward propagation.  */
  26 /* { dg-final { scan-tree-dump-times "Replaced" 1 "forwprop1"} } */
  27 /* { dg-final { cleanup-tree-dump "forwprop1" } } */
  28
  29 /* After cddce we should have two IF statements remaining as the other
  30    two tests can be threaded.  */
  31 /* { dg-final { scan-tree-dump-times "if " 2 "cddce2"} } */
  32 /* { dg-final { cleanup-tree-dump "cddce2" } } */