[Bug target/93532] RISCV g++ hangs with optimization >= -O2

[giulio.benetti at benettiengineering dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93532

--- Comment #14 from Giulio Benetti <giulio.benetti at benettiengineering dot 
com> ---
Hi Ji,

thanks for providing this patch, it fixes the problem.