[Bug rtl-optimization/33148] [4.2/4.3 Regresion] ICE in trunc_int_for_mode, at explow.c:56 during combine

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2007-08-27 08:52 -------
More reduced testcase, which fails both on the trunk (though just with -O1)
and on 4.2 (both -O1 and -O2):

int
foo (unsigned int *p, int *q, unsigned int w, unsigned int b)
{
  unsigned int i;
  int mask;

  if (q[0] < q[1])
    mask = 0xff;
  else
    mask = 0;

  for (i = 0; 8 * i < w; i++)
    {
      b ^= mask;
      *p++ = b;
    }
  return 0;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33148