[Bug tree-optimization/117875] [15 Regression] 28% regression for 456.hmmer on Zen4 with -Ofast -march=native

[chenglulu at loongson dot cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117875

--- Comment #22 from chenglulu <chenglulu at loongson dot cn> ---
(In reply to Richard Biener from comment #21)
> The big regression should now be fixed.

On LoongArch, with this patch, 456 performance has been restored.