[Bug tree-optimization/50561] [4.7 regression] ICE when compiling zlib with -O2 -floop-flatten -floop-strip-mine

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50561

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-09 
14:41:04 UTC ---
Re-confirmed.  Reduced testcase:

void f (unsigned *s)
{
  int n;
  for (n = 0; n < 256; n++)
    s[n] = 0;
}