[Bug tree-optimization/91934] [8 Regression] Performance regression on 8.3.0 with -O3 and avx

[tochansky at tochlab dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91934

--- Comment #10 from Dmitrii Tochanskii <tochansky at tochlab dot net> ---
Anyway thanks for your work. Now we know where problem is and users can make
their own decision about patch. 

RedHat 8 uses gcc 8.2 but debian 10 - gcc 8.3...