[llvm] [GlobalIsel] combine insert vector element (PR #89363)

[Dhruv Chawla via llvm-commits]

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@@ -853,6 +853,9 @@ class CombinerHelper {
   bool matchExtractVectorElementWithDifferentIndices(const MachineOperand &MO,
                                                      BuildFnTy &MatchInfo);
 
+  /// Combine insert vector element OOB.
+  bool matchInsertVectorElementOOB(MachineInstr &MI, BuildFnTy &MatchInfo);
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dc03-work wrote:

Please clarify what OOB means, it is not obvious.

https://github.com/llvm/llvm-project/pull/89363