gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-36.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1-details" } */
   3
   4 extern int opening;
   5 extern int middle_game;
   6 int s;
   7 extern int d[1];
   8 void PreEvaluate(int wtm)
   9 {
  10   int i, j;
  11   if (opening) {
  12       d[0]=1;
  13   }
  14   else if (middle_game) {
  15       d[0]=-1;
  16   }
  17   if (4 != opening) {
  18       return;
  19   }
  20   s = 1;
  21 }
  22
  23 /* We should be able to CSE the second load of opening.  */
  24
  25 /* { dg-final { scan-tree-dump "Replaced opening" "fre1" } } */