[Bug target/77468] [7 Regression] C-ray regression on Aarch64

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77468

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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          Component|middle-end                  |target

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This sounds like the generic tuning is wrong.

Can you try -mcpu=cortex-a53 and/or -mcpu=cortex-a57.  One thing I noticed
about the generic tuning is the cost model for the vectorizer is just bogus and
needs a lot of tuning.  I noticed this when I was comparing GCC 5 and GCC 6.

Also can you try out GCC 6 to see if an issue there too (I bet it is).