[llvm] [VectorCombine] Add support for zext/sext/trunc to shuffleToIdentity (PR #92696)

[Ramkumar Ramachandra via llvm-commits]

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@@ -1773,7 +1772,9 @@ bool VectorCombine::foldShuffleToIdentity(Instruction &I) {
         !cast<BinaryOperator>(Item[0].first)->isIntDivRem()) {
       Worklist.push_back(GenerateInstLaneVectorFromOperand(Item, 0));
       Worklist.push_back(GenerateInstLaneVectorFromOperand(Item, 1));
-    } else if (isa<UnaryOperator>(Item[0].first)) {
+    } else if (isa<UnaryOperator>(Item[0].first) ||
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artagnon wrote:

Use match() from PatternMatch?

https://github.com/llvm/llvm-project/pull/92696