[Bug tree-optimization/28868] [4.0/4.1/4.2 Regression] Not elimintation the PHIs which have the same agruments

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-08-28 06:43 -------
If I do this:
int f(int t, int a, int b)
{
  int c, d, e;
  if (t)
  {
    c = a+1;
    d = a+1;
    e = a+1;
  }
  else
  {
    c = b+1;
    d = b+1;
    e = b+1;
  }
  return c+d+e;
}

We get the extra moves elimintated (though not at the tree level).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28868