[Bug tree-optimization/52005] tree-ssa-combineif does not work with some cfgs

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52005

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-26 22:08:05 UTC ---
Here is another testcase:
int f(int x, int a, int b)
{
  int t = 0;
  int c = 1 << a;
  if (!(x & 1))
    t = 0;
  else
    if (x & (1 << 2))
      t = g();
    else
      t = 0;
  return t;
}

The original testcase is not currently optimized with current patch but the
above one is.  I am still on the case of the original testcase.