[Bug middle-end/92492] Missed optimization in detecting unneeded widening conversions.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92492

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If we change x264_clip_uint8 slightly to:

static inline uint8_t x264_clip_uint8( uint8_t x )
{
  uint8_t t = -x;
  t = t>>7;
  uint8_t t1 = x&(~63);
  return t1 ? t : x;
}


GCC does the "right" thing.

This is all type demontion going on.