[builtins] implement JSBuiltinReducer for ArrayIteratorNext()

src/compiler/js-generic-lowering.cc

 // Copyright 2014 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/compiler/js-generic-lowering.h"
 
 #include "src/ast/ast.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
@@ skipping 445 matching lines @@
   } else {
     ReplaceWithRuntimeCall(node, Runtime::kNewFunctionContext);
   }
 }
 
 
 void JSGenericLowering::LowerJSCreateIterResultObject(Node* node) {
   ReplaceWithRuntimeCall(node, Runtime::kCreateIterResultObject);
 }
 
+void JSGenericLowering::LowerJSCreateKeyValueArray(Node* node) {
+  ReplaceWithRuntimeCall(node, Runtime::kCreateKeyValueArray);
+}
 
 void JSGenericLowering::LowerJSCreateLiteralArray(Node* node) {
   CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
   CallDescriptor::Flags flags = FrameStateFlagForCall(node);
   node->InsertInput(zone(), 1, jsgraph()->SmiConstant(p.index()));
   node->InsertInput(zone(), 2, jsgraph()->HeapConstant(p.constant()));
 
   // Use the FastCloneShallowArrayStub only for shallow boilerplates up to the
   // initial length limit for arrays with "fast" elements kind.
   if ((p.flags() & ArrayLiteral::kShallowElements) != 0 &&
@@ skipping 218 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8