[llvm] [SystemZ] Fold i16/i32/i64 logical RMW operations into memory operands in TableGen (PR #192802)

[Ulrich Weigand via llvm-commits]

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@@ -1280,6 +1280,8 @@ let Defs = [CC] in {
 }
 defm : RMWIByte<and, bdaddr12pair, NI>;
 defm : RMWIByte<and, bdaddr20pair, NIY>;
+defm : RMWIByteLSB<and, bdaddr12pair, NI>;
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uweigand wrote:

Would be nicer if this could get folded into the `RMWIByte` multiclass rather than always having to write two defs.

https://github.com/llvm/llvm-project/pull/192802