[builtins] More stubs to the builtin-o-sphere.

src/builtins/builtins-constructor.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stub-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 typedef compiler::Node Node;
 typedef compiler::CodeAssemblerState CodeAssemblerState;
+typedef compiler::CodeAssemblerLabel CodeAssemblerLabel;
 
 class ConstructorBuiltinsAssembler : public CodeStubAssembler {
  public:
   explicit ConstructorBuiltinsAssembler(CodeAssemblerState* state)
       : CodeStubAssembler(state) {}
 
   Node* EmitFastNewClosure(Node* shared_info, Node* context);
   Node* EmitFastNewFunctionContext(Node* closure, Node* slots, Node* context,
                                    ScopeType scope_type);
   static int MaximumFunctionContextSlots();
 
+  Node* EmitFastCloneRegExp(Node* closure, Node* literal_index, Node* pattern,
+                            Node* flags, Node* context);
+  Node* EmitFastCloneShallowArray(Node* closure, Node* literal_index,
+                                  Node* context,
+                                  CodeAssemblerLabel* call_runtime,
+                                  AllocationSiteMode allocation_site_mode);
+
+  // Maximum number of elements in copied array (chosen so that even an array
+  // backed by a double backing store will fit into new-space).
+  static const int kMaximumClonedShallowArrayElements =
+      JSArray::kInitialMaxFastElementArray * kPointerSize / kDoubleSize;
+
+  void CreateFastCloneShallowArrayBuiltin(
+      AllocationSiteMode allocation_site_mode);
+
+  // Maximum number of properties in copied objects.
+  static const int kMaximumClonedShallowObjectProperties = 6;
+  static int FastCloneShallowObjectPropertiesCount(int literal_length);
+  Node* EmitFastCloneShallowObject(CodeAssemblerLabel* call_runtime,
+                                   Node* closure, Node* literals_index,
+                                   Node* properties_count);
+  void CreateFastCloneShallowObjectBuiltin(int properties_count);
+
  private:
   static const int kMaximumSlots = 0x8000;
   static const int kSmallMaximumSlots = 10;
 
+  Node* NonEmptyShallowClone(Node* boilerplate, Node* boilerplate_map,
+                             Node* boilerplate_elements, Node* allocation_site,
+                             Node* capacity, ElementsKind kind);
+
   // FastNewFunctionContext can only allocate closures which fit in the
   // new space.
   STATIC_ASSERT(((kMaximumSlots + Context::MIN_CONTEXT_SLOTS) * kPointerSize +
                  FixedArray::kHeaderSize) < kMaxRegularHeapObjectSize);
 };
 
 }  // namespace internal
 }  // namespace v8