[Bug target/107713] Wrong implementation atomic_exchange on LoongArch

[chenglulu at loongson dot cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107713

--- Comment #10 from chenglulu <chenglulu at loongson dot cn> ---
(In reply to Xi Ruoyao from comment #9)
> Fixed for gcc-12 too.

Thanks! ^v^