[Bug target/91769] [9 regression] wrong code with -O2 on MIPS

[aurelien at aurel32 dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91769

--- Comment #2 from Aurelien Jarno <aurelien at aurel32 dot net> ---
I have just done a build of trunk (r275723) and I confirm the bug is still
reproducible.