Change StoreIC interface on x64 to pass receiver in rdx, not on stack.

src/x64/debug-x64.cc

Index: src/x64/debug-x64.cc
===================================================================
--- src/x64/debug-x64.cc	(revision 3764)
+++ src/x64/debug-x64.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright 2009 the V8 project authors. All rights reserved.
+// Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -158,12 +158,13 @@
 
 
 void Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) {
-  // REgister state for IC store call (from ic-x64.cc).
+  // Register state for IC store call (from ic-x64.cc).
   // ----------- S t a t e -------------
   //  -- rax    : value
   //  -- rcx    : name
+  //  -- rdx    : receiver
   // -----------------------------------
-  Generate_DebugBreakCallHelper(masm, rax.bit() | rcx.bit(), false);
+  Generate_DebugBreakCallHelper(masm, rax.bit() | rcx.bit() | rdx.bit(), false);
 }