[Bug tree-optimization/51042] [4.5/4.6/4.7 Regression] endless recursion in phi_translate

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51042

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-11-09 
13:23:00 UTC ---
Even shorter testcase:

int a, b;

void
foo (int x)
{
  int e[2];
  int d; 
  while (x)
    {
      for (d = 0; d <= 1; d = 1)
        if (e[a])
          break;
      for (b = 0; b <= 0; b = 1)
        {
          e[a] = a;
          if (a)
            break;
        }
    }
}