[Bug target/114978] [14/15 regression] 548.exchange2_r 14%-28% regressions on Loongarch64 after gcc 14 snapshot 20240317

[liuhongt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114978

--- Comment #33 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
I have a fix in ivopt for x86 in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115842#c6, you may try to see if
that helps?