[llvm] [RISCV] Select and/or/xor with certain constants to Zbb ANDN/ORN/XNOR (PR #120221)

[Craig Topper via llvm-commits]

topperc wrote:

> > By default, LLVM will squash-merge, so can you pre-commit the new test file before landing this?
> 
> Do you mean create a new PR for the pre-commit test?

If you have commit access you can directly push it without going through github.

https://github.com/llvm/llvm-project/pull/120221