[Bug rtl-optimization/69570] [6 Regression] if-conversion bug on i?86

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69570

--- Comment #12 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Or lose the equality tests on the max values, instead use something like
  if (b > r && b >= g)
I suppose that could still have problems if b and g are equal and one of them
is spilled. Someone who knows that code would have to say whether that's a
problem or not.