Introduce number type information in the virtual frame.

src/ia32/virtual-frame-ia32.h

Index: src/ia32/virtual-frame-ia32.h
===================================================================
--- src/ia32/virtual-frame-ia32.h	(revision 3859)
+++ src/ia32/virtual-frame-ia32.h	(working copy)
@@ -28,6 +28,7 @@
 #ifndef V8_IA32_VIRTUAL_FRAME_IA32_H_
 #define V8_IA32_VIRTUAL_FRAME_IA32_H_
 
+#include "number-info.h"
 #include "register-allocator.h"
 #include "scopes.h"
 
@@ -82,7 +83,8 @@
   MacroAssembler* masm() { return cgen()->masm(); }
 
   // Create a duplicate of an existing valid frame element.
-  FrameElement CopyElementAt(int index);
+  FrameElement CopyElementAt(int index,
+    NumberInfo::Type info = NumberInfo::kUninitialized);
 
   // The number of elements on the virtual frame.
   int element_count() { return elements_.length(); }
@@ -385,12 +387,15 @@
 
   // Push an element on top of the expression stack and emit a
   // corresponding push instruction.
-  void EmitPush(Register reg);
-  void EmitPush(Operand operand);
-  void EmitPush(Immediate immediate);
+  void EmitPush(Register reg,
+                NumberInfo::Type info = NumberInfo::kUnknown);
+  void EmitPush(Operand operand,
+                NumberInfo::Type info = NumberInfo::kUnknown);
+  void EmitPush(Immediate immediate,
+                NumberInfo::Type info = NumberInfo::kUnknown);
 
   // Push an element on the virtual frame.
-  void Push(Register reg);
+  void Push(Register reg, NumberInfo::Type info = NumberInfo::kUnknown);
   void Push(Handle<Object> value);
   void Push(Smi* value) {
     Push(Handle<Object> (value));
@@ -402,7 +407,7 @@
     // This assert will trigger if you try to push the same value twice.
     ASSERT(result->is_valid());
     if (result->is_register()) {
-      Push(result->reg());
+      Push(result->reg(), result->number_info());
     } else {
       ASSERT(result->is_constant());
       Push(result->handle());