[Bug tree-optimization/106888] [RISCV] Negative optimization that excess andi instructions are generated in gcc.dg/pr90838.c

[shihua at iscas dot ac.cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106888

--- Comment #1 from shihua at iscas dot ac.cn <shihua at iscas dot ac.cn> ---
This patch is 
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=c23a9c87cc62bd177fd0d4db6ad34b34e1b9a31f