Faster to number conversion

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index a006c44dd54705d90ddf4a041be3e2126b652257..9c16100a97010ed73021c55164566c607d126738 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -407,6 +407,11 @@ class HType {
     return ((type_ & kString) == kString);
   }
 
+  bool IsNonString() const {
+    return (IsTaggedPrimitive() || IsSmi() || IsHeapNumber() ||

[Toon Verwaest, 2013/07/22 16:46:45]

Nit: remove () around the expression.

+        IsBoolean() || IsJSArray());
+  }
+
   bool IsBoolean() const {
     ASSERT(type_ != kUninitialized);
     return ((type_ & kBoolean) == kBoolean);
@@ -3350,7 +3355,8 @@ class HConstant: public HTemplateInstruction<0> {
   virtual HType CalculateInferredType();
   bool IsInteger() { return handle()->IsSmi(); }
   HConstant* CopyToRepresentation(Representation r, Zone* zone) const;
-  HConstant* CopyToTruncatedInt32(Zone* zone) const;
+  Maybe<HConstant*> CopyToTruncatedInt32(Zone* zone);
+  Maybe<HConstant*> CopyToTruncatedNumber(Zone* zone);
   bool HasInteger32Value() const { return has_int32_value_; }
   int32_t Integer32Value() const {
     ASSERT(HasInteger32Value());