[llvm] [ARM] Speedups for CombineBaseUpdate. (PR #129725)

[Peter Smith via llvm-commits]

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@@ -16284,27 +16299,19 @@ static SDValue CombineBaseUpdate(SDNode *N,
       unsigned NewConstInc = UserOffset - Offset;
       SDValue NewInc = DCI.DAG.getConstant(NewConstInc, SDLoc(N), MVT::i32);
       BaseUpdates.push_back({User, NewInc, NewConstInc});
+      if (BaseUpdates.size() > MaxBaseUpdates)
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smithp35 wrote:

Being pedantic, wouldn't this take BaseUpdates one over MaxBaseUpdates? Not important in practice, but possibly worth making this == MaxBaseUpdates.

https://github.com/llvm/llvm-project/pull/129725