[Bug target/112935] [14 Regression] Performance regression in Coremarks crcu8 function

[xry111 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112935

--- Comment #6 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
On a LA664 it seems a mul.w instruction costs 4 times a "simple" instruction
like add.w/sub.w/and, and div.w costs 5 times.