[llvm] [AArch64] Fold NEON splats into users by using SVE immediates (PR #165559)

[Benjamin Maxwell via llvm-commits]

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@@ -15535,6 +15601,9 @@ SDValue AArch64TargetLowering::LowerBUILD_VECTOR(SDValue Op,
         return Op;
   }
 
+  if (SDValue V = tryFoldSplatIntoUsersWithSVE(Op, DAG))
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MacDue wrote:

Rewritten using table-gen matchers. 

https://github.com/llvm/llvm-project/pull/165559