[mlir][NFC] Use explicit ArrayRef construction in OptionalArrayRefParameter

GCC was barfing on template deduction for ArrayRef parameters in
some situations.

diff --git a/mlir/include/mlir/IR/AttrTypeBase.td b/mlir/include/mlir/IR/AttrTypeBase.td
index dd17f08..e9c25ee 100644 (file)
--- a/mlir/include/mlir/IR/AttrTypeBase.td
+++ b/mlir/include/mlir/IR/AttrTypeBase.td
@@ -368,7 +368,7 @@ class OptionalArrayRefParameter<string arrayOf, string desc = ""> :
     OptionalParameter<"::llvm::ArrayRef<" # arrayOf # ">", desc> {
   let allocator = [{$_dst = $_allocator.copyInto($_self);}];
   let cppStorageType = "::llvm::SmallVector<" # arrayOf # ">";
-  let comparator = "::llvm::ArrayRef($_lhs) == ::llvm::ArrayRef($_rhs)";
+  let comparator = cppType # "($_lhs) == " # cppType # "($_rhs)";
 }
 
 // For classes which require allocation and have their own allocateInto method.