X64 Win64: Reimplement fmod so that it works.

src/arm/codegen-arm.h

Index: src/arm/codegen-arm.h
diff --git a/src/arm/codegen-arm.h b/src/arm/codegen-arm.h
index 7b50b01049fc5c135d0d394bedb43ae473a088d9..ccb9f801ce964bbd07f6b7e6d36d7c0281fd1204 100644
--- a/src/arm/codegen-arm.h
+++ b/src/arm/codegen-arm.h
@@ -376,6 +376,9 @@ class CodeGenerator: public AstVisitor {
   inline void GenerateMathSin(ZoneList<Expression*>* args);
   inline void GenerateMathCos(ZoneList<Expression*>* args);
 
+  // Potentially alternative support for modulo operation on numbers.

[William Hesse, 2009/10/20 14:50:51]

I don't understand this comment.  What is it, when is it used, what does it do?

[Lasse Reichstein, 2009/10/22 11:22:53]

It generates code to compute x % y. It's "potential" because it should only be
used on 64-bit Windows.

+  void GenerateNumberMod(ZoneList<Expression*>* args);
+
   // Simple condition analysis.
   enum ConditionAnalysis {
     ALWAYS_TRUE,