[llvm] [RISCV][MC] Add support for experimental Zimop extension (PR #75182)

[Craig Topper via llvm-commits]

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@@ -108,6 +108,29 @@ let TargetPrefix = "riscv" in {
   def int_riscv_xperm8  : BitManipGPRGPRIntrinsics;
 } // TargetPrefix = "riscv"
 
+//===----------------------------------------------------------------------===//
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topperc wrote:

This isn't part of MC and should not be in this patch.

https://github.com/llvm/llvm-project/pull/75182