[Bug target/111376] missed optimization of one bit test on MIPS32r1

[syq at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111376

--- Comment #10 from YunQiang Su <syq at gcc dot gnu.org> ---
I have some performance test.

sll+bgez is some slower than lui+and+beqz.
On Loongson 3A4000, it is about 10%.

So this "optimization" makes sense only for -Os.