[Bug target/127177] __builtin_isinf vectorization incorrectly signals FE_INVALID

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127177

--- Comment #6 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
AVX512 VFPCLASS put the result into the kmask, and there's inter-unit movement
between kmask and gpr, it's not necessary faster.