[llvm] [AArch64] Convert concat(uhadd(a,b), uhadd(c,d)) to uhadd(concat(a,c), concat(b,d)) (PR #79464)

[David Green via llvm-commits]

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@@ -18240,29 +18233,10 @@ static SDValue performConcatVectorsCombine(SDNode *N,
     EVT N00VT = N00.getValueType();
     EVT N10VT = N10.getValueType();
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davemgreen wrote:

I think these two will end up being unused.

https://github.com/llvm/llvm-project/pull/79464