[Bug target/82862] [8 Regression] SPEC CPU2006 465.tonto performance regression with r253975 (up to 40% drop for particular loop)

[alexander.nesterovskiy at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82862

--- Comment #8 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
I'd say that it's not just fixed but improved with an impressive gain.

It is about +4% on HSW AVX2 and about +8% on SKX AVX512 after r257734 (compared
to r257732) for a 465.tonto SPEC rate.
Comparing to reference r253973 it is about +2% on HSW AVX2 and +18% on SKX
AVX512 (AVX512 was greatly improved in last 3 months).