gcc/testsuite/gcc.dg/tail-merge-store.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-tail-merge -fdump-tree-pre" } */
   3
   4 int z;
   5 int x;
   6
   7 void
   8 f (int c, int d)
   9 {
  10   if (c)
  11     z = 5;
  12   else
  13     {
  14       if (d)
  15         x = 4;
  16       z = 5;
  17     }
  18 }
  19
  20 /* { dg-final { scan-tree-dump-times "duplicate of" 1 "pre"} } */
  21 /* { dg-final { scan-tree-dump-times "z = 5" 1 "pre"} } */
  22 /* { dg-final { cleanup-tree-dump "pre" } } */