[Bug target/101908] [12 regression] cray regression with -O2 -ftree-slp-vectorize compared to -O2
lili.cui at intel dot com
gcc-bugzilla@gcc.gnu.org
Fri Feb 25 08:26:37 GMT 2022
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101908
cuilili <lili.cui at intel dot com> changed:
What |Removed |Added
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CC| |lili.cui at intel dot com
--- Comment #23 from cuilili <lili.cui at intel dot com> ---
(In reply to Richard Biener from comment #17)
> I do wonder though how CLX is fine with such access pattern ;) (did you test
> with just -O2?)
Actually CLX also has STLF issues, there is 13.7% regression when comparing
"gcc trunk + -O2" w/ and w/t "-fno-tree-vectorize"
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