gcc/testsuite/gcc.dg/tree-ssa/phi-opt-8.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized -fdump-tree-phiopt1" } */
   3
   4 int g(int,int);
   5 int f(int t, int c)
   6 {
   7   int d = 0;
   8   int e = 0;
   9   if (t)
  10     {
  11       d = 1;
  12       e = t;
  13     }
  14   else d = 0, e = 0;
  15   return g(e,d);
  16 }
  17
  18 /* This testcase should be reduced to e = t; d = t != 0; in phiopt1
  19    but currently is not as PHI-OPT does not reduce the t PHI as we have
  20    two phis.  Note this is fixed with
  21    http://gcc.gnu.org/ml/gcc-patches/2012-01/msg01195.html .  */
  22 /* { dg-final { scan-tree-dump-not "if" "phiopt1" } } */
  23 /* { dg-final { scan-tree-dump "g .t_\[0-9\]*.D.," "optimized" } } */
  24 /* { dg-final { scan-tree-dump-not "PHI" "optimized" } } */
  25 /* { dg-final { cleanup-tree-dump "phiopt1" } } */
  26 /* { dg-final { cleanup-tree-dump "optimized" } } */