[clang] [CIR] Implement folder for VecCmpOp (PR #143322)

[Andy Kaylor via cfe-commits]

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@@ -142,7 +142,7 @@ void CIRCanonicalizePass::runOnOperation() {
     // Many operations are here to perform a manual `fold` in
     // applyOpPatternsGreedily.
     if (isa<BrOp, BrCondOp, CastOp, ScopeOp, SwitchOp, SelectOp, UnaryOp,
-            VecExtractOp, VecShuffleDynamicOp, VecTernaryOp>(op))
+            VecExtractOp, VecShuffleDynamicOp, VecTernaryOp, VecCmpOp>(op))
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andykaylor wrote:

Nit: Can you put these in lexical order?

https://github.com/llvm/llvm-project/pull/143322