[llvm] [AArch64] Add @llvm.experimental.vector.match (PR #101974)

[Paul Walker via llvm-commits]

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@@ -6364,6 +6364,91 @@ SDValue AArch64TargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
         DAG.getNode(AArch64ISD::CTTZ_ELTS, dl, MVT::i64, CttzOp);
     return DAG.getZExtOrTrunc(NewCttzElts, dl, Op.getValueType());
   }
+  case Intrinsic::experimental_vector_match: {
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paulwalker-arm wrote:

The lowering here is reasonably big. Any objections to moving it into a dedicated "LowerVectorMatch" function?

https://github.com/llvm/llvm-project/pull/101974