[Bug rtl-optimization/47477] [4.7/4.8/4.9 regression] Sub-optimal mov at end of method

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47477

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Another testcase:
short a[1024], b[1024];

void
foo (void)
{
  int i;
  for (i = 0; i < 1024; i++)
    {
      short c = (char) a[i] + 5;
      long long d = (long long) b[i] + 12;
      a[i] = c + d;
    }
}