Implement type recording for ToBoolean on x64.

src/code-stubs.h

Index: src/code-stubs.h
===================================================================
--- src/code-stubs.h	(revision 8763)
+++ src/code-stubs.h	(working copy)
@@ -955,7 +955,11 @@
 
   void CheckOddball(MacroAssembler* masm,
                     Type type,
+#if V8_TARGET_ARCH_IA32

[danno, 2011/08/01 11:36:13]

Why don't you make CheckOddball a method in the MacroAssembler? Then you don't
need the #if def at all

[Kevin Millikin (Chromium), 2011/08/01 11:51:55]

I thought it was because it needs the types_.  They could be passed in as an
argument, but the function is still pretty specific to this stub.

                     Handle<Object> value,

[Kevin Millikin (Chromium), 2011/08/01 11:32:04]

I don't really like using the preprocessor like this.  Couldn't it be avoided by
passing the root list index always and using the roots array in the IA32
implementation?

+#else
+                    Heap::RootListIndex value,
+#endif
                     bool result,
                     Label* patch);
   void GenerateTypeTransition(MacroAssembler* masm);