[clang] [CIR] Upstream basic support for ArrayType (PR #130502)

[Andy Kaylor via cfe-commits]

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@@ -166,6 +166,9 @@ static LogicalResult checkConstantTypes(mlir::Operation *op, mlir::Type opType,
     return success();
   }
 
+  if (mlir::isa<cir::ArrayType>(opType))
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andykaylor wrote:

I don't see this in the incubator implementation of this function. Why is this here?

https://github.com/llvm/llvm-project/pull/130502