[Bug target/101908] [12 regression] cray regression with -O2 -ftree-slp-vectorize compared to -O2

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101908

--- Comment #25 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to cuilili from comment #24)
> (In reply to cuilili from comment #23)
> > (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?)
> > 
> Sorry, correct w/ and w/t order.
> 
>  Actually CLX also has STLF issues, there is 13.7% regression when comparing
>  "gcc trunk + -O2" w/t and w/ "-fno-tree-vectorize"

Can this be mitigated by removing redundant load and store?