Record ToBoolean's type information in Hydrogen's HBranch instruction, so we can use it in LCodeG...

src/type-info.h

Index: src/type-info.h
===================================================================
--- src/type-info.h	(revision 8716)
+++ src/type-info.h	(working copy)
@@ -238,6 +238,10 @@
 
   bool LoadIsBuiltin(Property* expr, Builtins::Name id);
 
+  // We can't use ToBooleanStub::Types as the return value because of various
+  // cylces in our headers. Death to tons of implementations in headers!! :-P

[fschneider, 2011/07/25 11:55:19]

It would be a perfect opportunity to untangle one of the cycles!

If you add the comment, please add a todo with a corresponding issue to track.
Otherwise, it will never happen ;)

[Sven Panne, 2011/07/25 14:06:32]

Untangling our huge header mess is a separate task which will require a few
days, probably even weeks. I've tried some seemingly innocuous cleanups several
times and almost always completely reverted after half a day or so. Firing up
doxygen on our sources, switching the browser to full-screen and admiring the
enormous header dependency graphs should convince anyone that this cleanup task
is not a minor one... ;-)

I'll add a TODO here.

+  byte ToBooleanTypes(unsigned ast_id);
+
   // Get type information for arithmetic operations and compares.
   TypeInfo UnaryType(UnaryOperation* expr);
   TypeInfo BinaryType(BinaryOperation* expr);