Disallow dereferencing deferred handles when generating optimized code.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index b473c6b52b045c6b93c22028ed04fd3a518ff878..b39d9ee1227e255b1af96ef76ea81e46353ee97b 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -305,16 +305,20 @@ void RelocInfo::PatchCodeWithCall(Address target, int guard_bytes) {
 // See assembler-arm-inl.h for inlined constructors
 
 Operand::Operand(Handle<Object> handle) {
+#ifdef DEBUG
+  Isolate* isolate = Isolate::Current();
+#endif
+  ALLOW_HANDLE_DEREF(isolate, "using and embedding raw address");
   rm_ = no_reg;
   // Verify all Objects referred by code are NOT in new space.
   Object* obj = *handle;
-  ASSERT(!HEAP->InNewSpace(obj));
+  ASSERT(!isolate->heap()->InNewSpace(obj));
   if (obj->IsHeapObject()) {
     imm32_ = reinterpret_cast<intptr_t>(handle.location());
     rmode_ = RelocInfo::EMBEDDED_OBJECT;
   } else {
     // no relocation needed
-    imm32_ =  reinterpret_cast<intptr_t>(obj);
+    imm32_ = reinterpret_cast<intptr_t>(obj);
     rmode_ = RelocInfo::NONE32;
   }
 }