1 files changed, 68 insertions, 0 deletions
diff --git a/deps/v8/src/builtins/builtins-constructor.h b/deps/v8/src/builtins/builtins-constructor.h
new file mode 100644
index 0000000000..68629a7bd3
--- /dev/null
+++ b/deps/v8/src/builtins/builtins-constructor.h
@@ -0,0 +1,68 @@
+// 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* feedback_vector, Node* slot,
+                           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);
+
+  Node* EmitFastNewObject(Node* context, Node* target, Node* new_target);
+
+  Node* EmitFastNewObject(Node* context, Node* target, Node* new_target,
+                          CodeAssemblerLabel* call_runtime);
+
+ 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