[Bug tree-optimization/51988] value_replacement in PHIOPT should handle even the cases where there are other PHIs even with non equal value

["pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51988

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-25 00:58:45 UTC ---
I have a patch which fixes the testcases in comment #3 and comment #5.  The
testcase in comment #0 will be fixed with the patch in
http://gcc.gnu.org/ml/gcc-patches/2012-01/msg01195.html and this new patch. 
Here is a testcase which still cannot be done with the other patch:
int g(int,int);
int f(int t, int c)
{
  int d = 0;
  int e = 0;
  if (t)
    {
      d = t;
      if (c) e = 3;
    }
  else d = 0, e = 0;
  return g(d,e);
}
--- CUT ---
I am going to submit the current patch after testing and leave this bug report
open for the above testcase (since the first one is fixed as the patch I
reference here is approved).