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

[Sam Elliott via llvm-commits]

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@@ -273,37 +240,21 @@ define i32 @compl(i32 %x) {
 }
 
 define i32 @orlow12(i32 %x) {
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lenary wrote:

I would add RUN lines with `+zbs`, rather than adding `+zbs` to the existing RUN lines. 

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