Canonicalize handles for optimized compilation.

src/ia32/macro-assembler-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/ia32/frames-ia32.h"
 #include "src/ia32/macro-assembler-ia32.h"
 #include "src/runtime/runtime.h"
 
 namespace v8 {
 namespace internal {
 
 // -------------------------------------------------------------------------
 // MacroAssembler implementation.
 
 MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
     : Assembler(arg_isolate, buffer, size),
       generating_stub_(false),
       has_frame_(false) {
   if (isolate() != NULL) {
-    // TODO(titzer): should we just use a null handle here instead?
-    code_object_ = Handle<Object>(isolate()->heap()->undefined_value(),
-                                  isolate());
+    code_object_ =
+        Handle<Object>::New(isolate()->heap()->undefined_value(), isolate());
   }
 }
 
 
 void MacroAssembler::Load(Register dst, const Operand& src, Representation r) {
   DCHECK(!r.IsDouble());
   if (r.IsInteger8()) {
     movsx_b(dst, src);
   } else if (r.IsUInteger8()) {
     movzx_b(dst, src);
@@ skipping 3109 matching lines @@
   mov(eax, dividend);
   shr(eax, 31);
   add(edx, eax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32