[turbofan] Add new JSIntrinsicsLowering reducer.

src/compiler/js-intrinsic-lowering.h

-// Copyright 2014 the V8 project authors. All rights reserved.
+// Copyright 2015 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_BUILTIN_REDUCER_H_
-#define V8_COMPILER_JS_BUILTIN_REDUCER_H_
+#ifndef V8_COMPILER_JS_INTRINSIC_LOWERING_H_
+#define V8_COMPILER_JS_INTRINSIC_LOWERING_H_
 
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/simplified-operator.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Forward declarations.
 class CommonOperatorBuilder;
 class JSGraph;
 class MachineOperatorBuilder;
 
 
-class JSBuiltinReducer FINAL : public Reducer {
+// Lowers certain JS-level runtime calls.
+class JSIntrinsicLowering FINAL : public Reducer {
  public:
-  explicit JSBuiltinReducer(JSGraph* jsgraph);
-  ~JSBuiltinReducer() FINAL {}
+  explicit JSIntrinsicLowering(JSGraph* jsgraph);
+  ~JSIntrinsicLowering() FINAL {}
 
   Reduction Reduce(Node* node) FINAL;
 
  private:
-  Reduction ReduceMathAbs(Node* node);
-  Reduction ReduceMathSqrt(Node* node);
-  Reduction ReduceMathMax(Node* node);
-  Reduction ReduceMathImul(Node* node);
-  Reduction ReduceMathFround(Node* node);
-  Reduction ReduceMathFloor(Node* node);
-  Reduction ReduceMathCeil(Node* node);
+  Reduction ReduceInlineIsSmi(Node* node);
+  Reduction ReduceInlineIsNonNegativeSmi(Node* node);
+  Reduction ReduceInlineIsInstanceType(Node* node, InstanceType instance_type);
+  Reduction ReduceInlineValueOf(Node* node);
 
+  Reduction Change(Node* node, const Operator* op);
+  Reduction Change(Node* node, const Operator* op, Node* a, Node* b, Node* c);
+
+  Graph* graph() const;
   JSGraph* jsgraph() const { return jsgraph_; }
-  Graph* graph() const;
   CommonOperatorBuilder* common() const;
   MachineOperatorBuilder* machine() const;
   SimplifiedOperatorBuilder* simplified() { return &simplified_; }
 
   JSGraph* jsgraph_;
   SimplifiedOperatorBuilder simplified_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_COMPILER_JS_BUILTIN_REDUCER_H_
+#endif  // V8_COMPILER_JS_INTRINSIC_LOWERING_H_