[Bug target/121993] [16 Regression] 20-30% slowdown of 470.lbm on AMD Zen3 and 5-8% slowdown of 519.lbm_r on Zen2 since r16-3485-gae689f89fb4059

[lili.cui at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121993

--- Comment #1 from cuilili <lili.cui at intel dot com> ---
Hi Filip，

I don't have znver2 machine, so we tried to reproduce the 519 regression on
znver3 machine using the "-O2 -flto" options (both with and without the
commit). The results showed that the generated binaries were identical. Could
you please help confirm this ?Thanks.


I will continue to reproduce 470.