[MLIR] Add ArrayAttr::empty()

Summary: Add ArrayAttr::empty() to check for an empty ArrayAttr

Differential Revision: https://reviews.llvm.org/D81579

diff --git a/mlir/include/mlir/IR/Attributes.h b/mlir/include/mlir/IR/Attributes.h
index f0e8c5c..f9d8efd 100644 (file)
--- a/mlir/include/mlir/IR/Attributes.h
+++ b/mlir/include/mlir/IR/Attributes.h
@@ -213,6 +213,7 @@ public:
   iterator begin() const { return getValue().begin(); }
   iterator end() const { return getValue().end(); }
   size_t size() const { return getValue().size(); }
+  bool empty() const { return size() == 0; }
 
   /// Methods for support type inquiry through isa, cast, and dyn_cast.
   static bool kindof(unsigned kind) {