[Bug target/117688] [15 Regression] RISC-V: Wrong code for .SAT_SUB

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117688

--- Comment #7 from Li Pan <pan2.li at intel dot com> ---
Reproduced and will prepare a fix patch for this.