[llvm] [LLVM][CodeGen][SVE] Refactor isel of 128-bit constant splats. (PR #185652)

[Paul Walker via llvm-commits]

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@@ -16024,10 +16024,9 @@ static SDValue trySVESplat64(SDValue Op, SelectionDAG &DAG,
     return SDValue();
 
   SDLoc DL(Op);
-  SDValue SplatVal = DAG.getSplatVector(MVT::nxv2i64, DL,
-                                        DAG.getConstant(Val64, DL, MVT::i64));
-  SDValue Res = convertFromScalableVector(DAG, MVT::v2i64, SplatVal);
-  return DAG.getNode(AArch64ISD::NVCAST, DL, VT, Res);
+  SDValue SplatVal = DAG.getNode(AArch64ISD::DUP, DL, MVT::v2i64,
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paulwalker-arm wrote:

I don't believe so.  This is purely refactoring at this stage.

https://github.com/llvm/llvm-project/pull/185652