[Bug tree-optimization/91573] Vectorization failure for a loop to do multiply-add

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91573

Hongtao.liu <crazylht at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |crazylht at gmail dot com

--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
You can append -march=$processor.
It will use more accurate cost model for your machine.

e.g -march=core-avx2 can enable vectorization.