strange double comparison results with -O[12] on x86(-32)

[Florian Weimer]

* Andrew Pinski:

> This is known as GCC PR 323 which is not a bug: 
> <http://gcc.gnu.org/PR323>.

It is a bug in GCC, the C standard, or the x86 FP hardware.  I'm
leaning towards the C standard or the hardware. 8-)