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

[chenglulu at loongson dot cn via Gcc-bugs]

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

--- Comment #5 from chenglulu <chenglulu at loongson dot cn> ---
I will verify it on multiple machines to see if the problem can be reproduced.