Use Arguments object in C builtins, instead of __argc__ and __argv__.

src/platform-win32.cc

Index: src/platform-win32.cc
===================================================================
--- src/platform-win32.cc	(revision 2771)
+++ src/platform-win32.cc	(working copy)
@@ -1317,8 +1317,11 @@
 
 
 int OS::ActivationFrameAlignment() {
-  // Floating point code runs faster if the stack is 8-byte aligned.
-  return 8;
+#ifdef _WIN64
+  return 16;  // C math library requires the stack to be 16-byte aligned.

[Søren Thygesen Gjesse, 2009/08/27 11:18:14]

Is this only for math?

[William Hesse, 2009/08/27 11:26:12]

I don't know.

[Lasse Reichstein, 2009/08/27 11:35:28]

No, this is for all function calls in Win64.
See http://msdn.microsoft.com/en-us/library/ms235286.aspx

+#else
+  return 8;  // Floating-point math runs faster if stack is at least 8-byte aligned.
+#endif
 }