[llvm] [ARM] Lower vector interleave operations (PR #225670)

[David Green via llvm-commits]

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@@ -198,6 +198,8 @@ void ARMTargetLowering::addTypeForNEON(MVT VT, MVT PromotedLdStVT) {
   }
   setOperationAction(ISD::BUILD_VECTOR,      VT, Custom);
   setOperationAction(ISD::VECTOR_SHUFFLE,    VT, Custom);
+  setVectorInterleaveAction({ISD::VECTOR_INTERLEAVE, ISD::VECTOR_DEINTERLEAVE},
+                            {2, 3, 4}, VT, Custom);
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davemgreen wrote:

4 doesn't seem to be handled below?

https://github.com/llvm/llvm-project/pull/225670