[Bug target/126516] [17 Regression] 9% slowdown of calculix on Zen3 since r17-2723-g3f2b3eced0f827

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126516

--- Comment #1 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Could you help reproduce a testcase for it, I don't think shorter fold left
reduction itself can regress it by 9%, could trigger other issue.