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

[Andy Kaylor via cfe-commits]

================
@@ -1579,6 +1579,109 @@ OpFoldResult cir::VecExtractOp::fold(FoldAdaptor 
adaptor) {
   return elements[index];
 }
 
+//===----------------------------------------------------------------------===//
+// VecCmpOp
+//===----------------------------------------------------------------------===//
+
+OpFoldResult cir::VecCmpOp::fold(FoldAdaptor adaptor) {
+  mlir::Attribute lhs = adaptor.getLhs();
+  mlir::Attribute rhs = adaptor.getRhs();
+  if (!mlir::isa_and_nonnull<cir::ConstVectorAttr>(lhs) ||
+      !mlir::isa_and_nonnull<cir::ConstVectorAttr>(rhs))
+    return {};
+
+  auto lhsVecAttr = mlir::cast<cir::ConstVectorAttr>(lhs);
+  auto rhsVecAttr = mlir::cast<cir::ConstVectorAttr>(rhs);
+
+  auto inputElemTy =
+      mlir::cast<cir::VectorType>(lhsVecAttr.getType()).getElementType();
+  if (!mlir::isa<cir::IntType>(inputElemTy) &&
+      !mlir::isa<cir::CIRFPTypeInterface>(inputElemTy))
----------------
andykaylor wrote:

```suggestion
  if (!isAnyIntegerOrFloatingPointType(inputElemTy))
```

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