[Bug tree-optimization/64269] [4.8/4.9/5 Regression] ICE with -O3 enabled on Ubuntu 14.04

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64269

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Shorter testcase:
void
foo (char *p)
{
  __SIZE_TYPE__ s = ~(__SIZE_TYPE__)0;
  *p = 0;
  __builtin_memset (p + 1, 0, s);
}