[Bug target/116800] std::simd: poor code generation of AVX512 fused multiply-add

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116800

Hongtao Liu <liuhongt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |liuhongt at gcc dot gnu.org

--- Comment #2 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Adding additional option -mprefer-vector-width=512 or adjusting
-march=icelake-server to  -march=x86-64-v4 helps it