[Bug target/58684] powerpc uses only unordered floating-point compares

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58684

--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Patch at https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01405.html .