Introduce number type information in the virtual frame.

src/x64/virtual-frame-x64.h

 // Copyright 2009 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_X64_VIRTUAL_FRAME_X64_H_
 #define V8_X64_VIRTUAL_FRAME_X64_H_
 
+#include "number-info.h"
 #include "register-allocator.h"
 #include "scopes.h"
 
 namespace v8 {
 namespace internal {
 
 // -------------------------------------------------------------------------
 // Virtual frames
 //
 // The virtual frame is an abstraction of the physical stack frame.  It
@@ skipping 33 matching lines @@
   // Construct an initial virtual frame on entry to a JS function.
   VirtualFrame();
 
   // Construct a virtual frame as a clone of an existing one.
   explicit VirtualFrame(VirtualFrame* original);
 
   CodeGenerator* cgen() { return CodeGeneratorScope::Current(); }
   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(); }
 
   // The height of the virtual expression stack.
   int height() {
     return element_count() - expression_base_index();
   }
 
   int register_location(int num) {
@@ skipping 278 matching lines @@
   // Result, which may be a constant or a register.
   Result Pop();
 
   // Pop and save an element from the top of the expression stack and
   // emit a corresponding pop instruction.
   void EmitPop(Register reg);
   void EmitPop(const Operand& operand);
 
   // Push an element on top of the expression stack and emit a
   // corresponding push instruction.
-  void EmitPush(Register reg);
-  void EmitPush(const Operand& operand);
-  void EmitPush(Heap::RootListIndex index);
-  void EmitPush(Immediate immediate);
+  void EmitPush(Register reg,
+                NumberInfo::Type info = NumberInfo::kUnknown);
+  void EmitPush(const Operand& operand,
+                NumberInfo::Type info = NumberInfo::kUnknown);
+  void EmitPush(Heap::RootListIndex index,
+                NumberInfo::Type info = NumberInfo::kUnknown);
+  void EmitPush(Immediate immediate,
+                NumberInfo::Type info = NumberInfo::kUnknown);
   void EmitPush(Smi* value);
   // Uses kScratchRegister, emits appropriate relocation info.
   void EmitPush(Handle<Object> value);
 
   // 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)); }
 
   // Pushing a result invalidates it (its contents become owned by the
   // frame).
   void Push(Result* result) {
     if (result->is_register()) {
-      Push(result->reg());
+      Push(result->reg(), result->number_info());
     } else {
       ASSERT(result->is_constant());
       Push(result->handle());
     }
     result->Unuse();
   }
 
   // Nip removes zero or more elements from immediately below the top
   // of the frame, leaving the previous top-of-frame value on top of
   // the frame.  Nip(k) is equivalent to x = Pop(), Drop(k), Push(x).
@@ skipping 144 matching lines @@
 
   // Classes that need raw access to the elements_ array.
   friend class DeferredCode;
   friend class JumpTarget;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_VIRTUAL_FRAME_X64_H_