[llvm] [AArch64][ISel] Add lowering for i8 clmul intrinsics (PR #177323)

[Cullen Rhodes via llvm-commits]

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@@ -1498,6 +1498,8 @@ AArch64TargetLowering::AArch64TargetLowering(const TargetMachine &TM,
       }
     }
 
+    setOperationAction(ISD::CLMUL, MVT::v16i8, Legal);
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c-rhodes wrote:

also make v8i8 legal?

https://github.com/llvm/llvm-project/pull/177323