Add inlining for intrinsics.

src/compiler/js-intrinsic-builder.h

+// 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.
+
+#ifndef V8_COMPILER_JS_INTRINSIC_BUILDER_H_
+#define V8_COMPILER_JS_INTRINSIC_BUILDER_H_
+
+#include "src/compiler/js-graph.h"
+#include "src/v8.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+typedef std::pair<Node*, Node*> ResultAndEffect;
+
+class JSIntrinsicBuilder {
+ public:
+  explicit JSIntrinsicBuilder(JSGraph* jsgraph) : jsgraph_(jsgraph) {}
+
+  ResultAndEffect BuildGraphFor(Runtime::FunctionId id,
+                                const NodeVector& arguments);
+
+ private:
+  ResultAndEffect BuildMapCheck(Node* object, Node* effect,
+                                InstanceType map_type);
+  ResultAndEffect BuildGraphFor_IsSmi(const NodeVector& arguments);
+  ResultAndEffect BuildGraphFor_IsNonNegativeSmi(const NodeVector& arguments);
+  ResultAndEffect BuildGraphFor_ValueOf(const NodeVector& arguments);
+
+
+  Graph* graph() const { return jsgraph_->graph(); }
+  CommonOperatorBuilder* common() const { return jsgraph_->common(); }
+  JSGraph* jsgraph_;
+};
+}
+}
+}  // namespace v8::internal::compiler
+
+#endif  // V8_COMPILER_JS_INTRINSIC_BUILDER_H_