[Bug target/90234] 503.bwaves_r is 6% slower on Zen1 CPUs at -Ofast with native march/mtune than with generic ones

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90234

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|503.bwaves_r is 6% slower   |503.bwaves_r is 6% slower
                   |on Zen CPUs at -Ofast with  |on Zen1 CPUs at -Ofast with
                   |native march/mtune than     |native march/mtune than
                   |with generic ones           |with generic ones

--- Comment #1 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I can still see this issue on a Zen1 machine as of trunk revision
abe13e1847f (Feb 17 2020) but not on Zen2 machines (in both cases
targeting native ISAs).