NFC: Add wrappers around DenseIntElementsAttr/DenseFPElementsAttr::ge…

…t to avoid the need to cast.

This avoids the need to cast back to the derived type when calling get, i.e. removes the need to do DenseIntElementsAttr::get(...).cast<DenseIntElementsAttr>().

PiperOrigin-RevId: 281772163

mlir/include/mlir/IR/Attributes.h

@@ -974,6 +974,20 @@ class DenseFPElementsAttr : public DenseElementsAttr {
 
   using DenseElementsAttr::DenseElementsAttr;
 
+  /// Get an instance of a DenseFPElementsAttr with the given arguments. This
+  /// simply wraps the DenseElementsAttr::get calls.
+  template <typename Arg>
+  static DenseFPElementsAttr get(const ShapedType &type, Arg &&arg) {
+    return DenseElementsAttr::get(type, llvm::makeArrayRef(arg))
+        .template cast<DenseFPElementsAttr>();
+  }
+  template <typename T>
+  static DenseFPElementsAttr get(const ShapedType &type,
+                                 const std::initializer_list<T> &list) {
+    return DenseElementsAttr::get(type, list)
+        .template cast<DenseFPElementsAttr>();
+  }
+
   /// Generates a new DenseElementsAttr by mapping each value attribute, and
   /// constructing the DenseElementsAttr given the new element type.
   DenseElementsAttr
@@ -998,6 +1012,20 @@ class DenseIntElementsAttr : public DenseElementsAttr {
 
   using DenseElementsAttr::DenseElementsAttr;
 
+  /// Get an instance of a DenseIntElementsAttr with the given arguments. This
+  /// simply wraps the DenseElementsAttr::get calls.
+  template <typename Arg>
+  static DenseIntElementsAttr get(const ShapedType &type, Arg &&arg) {
+    return DenseElementsAttr::get(type, llvm::makeArrayRef(arg))
+        .template cast<DenseIntElementsAttr>();
+  }
+  template <typename T>
+  static DenseIntElementsAttr get(const ShapedType &type,
+                                  const std::initializer_list<T> &list) {
+    return DenseElementsAttr::get(type, list)
+        .template cast<DenseIntElementsAttr>();
+  }
+
   /// Generates a new DenseElementsAttr by mapping each value attribute, and
   /// constructing the DenseElementsAttr given the new element type.
   DenseElementsAttr