[Bug target/121213] Poor RV64 code generated for __atomic_exchange_n (llvm seems to do it right)

[vincenzo.romano at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121213

--- Comment #5 from Vincenzo Romano <vincenzo.romano at gmail dot com> ---
I confirm that trunk solves reported issue no.1 .

I confirm that trunk DOESN'T solve reported issue no.2 .