[llvm] [AArch64] Add CodeGen support for FEAT_CPA (PR #105669)

[Alexander Richardson via llvm-commits]

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@@ -4324,7 +4330,7 @@ void SelectionDAGBuilder::visitGetElementPtr(const User &I) {
             (int64_t(Offset) >= 0 && NW.hasNoUnsignedSignedWrap()))
           Flags.setNoUnsignedWrap(true);
 
-        N = DAG.getNode(ISD::ADD, dl, N.getValueType(), N,
+        N = DAG.getNode(AddOpcode, dl, N.getValueType(), N,
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arichardson wrote:

getMemBasePlusOffset?

https://github.com/llvm/llvm-project/pull/105669