MIPS: Disallow dereferencing deferred handles when generating optimized code.

src/mips/assembler-mips.cc

Index: src/mips/assembler-mips.cc
diff --git a/src/mips/assembler-mips.cc b/src/mips/assembler-mips.cc
index e36b97f180aee4fffa01ff677084a77441ca7d50..1b666ec6c073055cd5c988c92172e0506ad85314 100644
--- a/src/mips/assembler-mips.cc
+++ b/src/mips/assembler-mips.cc
@@ -237,10 +237,14 @@ void RelocInfo::PatchCodeWithCall(Address target, int guard_bytes) {
 // See assembler-mips-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;