Turn the NumberToStringStub into a hydrogen stub.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 30ec1c76ca9eda6e355032756c75758e0dfcee1d..72122007db16e28ed599d47f6a56ae1d220067fc 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -464,6 +464,22 @@ class ToNumberStub: public HydrogenCodeStub {
 };
 
 
+class NumberToStringStub V8_FINAL : public HydrogenCodeStub {
+ public:
+  NumberToStringStub() {}
+
+  virtual Handle<Code> GenerateCode(Isolate* isolate) V8_OVERRIDE;
+
+  virtual void InitializeInterfaceDescriptor(
+      Isolate* isolate,
+      CodeStubInterfaceDescriptor* descriptor) V8_OVERRIDE;
+

[mvstanton, 2013/09/23 09:32:34]

Here is a good place for something like:

  static const int kNumberParameter = 0;

[Benedikt Meurer, 2013/09/23 10:53:31]

Done.

+ private:
+  virtual Major MajorKey() V8_OVERRIDE { return NumberToString; }
+  virtual int NotMissMinorKey() V8_OVERRIDE { return 0; }
+};
+
+
 class FastNewClosureStub : public HydrogenCodeStub {
  public:
   explicit FastNewClosureStub(LanguageMode language_mode, bool is_generator)