diff --git a/src/runtime/runtime-literals.cc b/src/runtime/runtime-literals.cc
index 34feeba..9c43b40 100644
--- a/src/runtime/runtime-literals.cc
+++ b/src/runtime/runtime-literals.cc
@@ -85,7 +85,9 @@
     uint32_t element_index = 0;
     if (key->ToArrayIndex(&element_index)) {
       // Array index (uint32).
-      if (value->IsUninitialized()) value = handle(Smi::FromInt(0), isolate);
+      if (value->IsUninitialized(isolate)) {
+        value = handle(Smi::FromInt(0), isolate);
+      }
       maybe_result = JSObject::SetOwnElementIgnoreAttributes(
           boilerplate, element_index, value, NONE);
     } else {
@@ -209,7 +211,7 @@
 
   // Check if boilerplate exists. If not, create it first.
   Handle<Object> boilerplate(closure->literals()->literal(index), isolate);
-  if (boilerplate->IsUndefined()) {
+  if (boilerplate->IsUndefined(isolate)) {
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
         isolate, boilerplate, JSRegExp::New(pattern, JSRegExp::Flags(flags)));
     closure->literals()->set_literal(index, *boilerplate);
@@ -229,14 +231,14 @@
   bool should_have_fast_elements = (flags & ObjectLiteral::kFastElements) != 0;
   bool enable_mementos = (flags & ObjectLiteral::kDisableMementos) == 0;
 
-  RUNTIME_ASSERT(literals_index >= 0 &&
-                 literals_index < literals->literals_count());
+  CHECK(literals_index >= 0);
+  CHECK(literals_index < literals->literals_count());
 
   // Check if boilerplate exists. If not, create it first.
   Handle<Object> literal_site(literals->literal(literals_index), isolate);
   Handle<AllocationSite> site;
   Handle<JSObject> boilerplate;
-  if (*literal_site == isolate->heap()->undefined_value()) {
+  if (literal_site->IsUndefined(isolate)) {
     Handle<Object> raw_boilerplate;
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
         isolate, raw_boilerplate,
@@ -263,9 +265,7 @@
   MaybeHandle<Object> maybe_copy =
       JSObject::DeepCopy(boilerplate, &usage_context);
   usage_context.ExitScope(site, boilerplate);
-  Handle<Object> copy;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, copy, maybe_copy);
-  return *copy;
+  RETURN_RESULT_OR_FAILURE(isolate, maybe_copy);
 }
 
 MUST_USE_RESULT static MaybeHandle<AllocationSite> GetLiteralAllocationSite(
@@ -274,7 +274,7 @@
   // Check if boilerplate exists. If not, create it first.
   Handle<Object> literal_site(literals->literal(literals_index), isolate);
   Handle<AllocationSite> site;
-  if (*literal_site == isolate->heap()->undefined_value()) {
+  if (literal_site->IsUndefined(isolate)) {
     DCHECK(*elements != isolate->heap()->empty_fixed_array());
     Handle<Object> boilerplate;
     ASSIGN_RETURN_ON_EXCEPTION(
@@ -302,9 +302,7 @@
 static MaybeHandle<JSObject> CreateArrayLiteralImpl(
     Isolate* isolate, Handle<LiteralsArray> literals, int literals_index,
     Handle<FixedArray> elements, int flags) {
-  RUNTIME_ASSERT_HANDLIFIED(
-      literals_index >= 0 && literals_index < literals->literals_count(),
-      JSObject);
+  CHECK(literals_index >= 0 && literals_index < literals->literals_count());
   Handle<AllocationSite> site;
   ASSIGN_RETURN_ON_EXCEPTION(
       isolate, site,
@@ -333,12 +331,10 @@
   CONVERT_ARG_HANDLE_CHECKED(FixedArray, elements, 2);
   CONVERT_SMI_ARG_CHECKED(flags, 3);
 
-  Handle<JSObject> result;
   Handle<LiteralsArray> literals(closure->literals(), isolate);
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result, CreateArrayLiteralImpl(isolate, literals, literals_index,
-                                              elements, flags));
-  return *result;
+  RETURN_RESULT_OR_FAILURE(
+      isolate, CreateArrayLiteralImpl(isolate, literals, literals_index,
+                                      elements, flags));
 }
 
 
@@ -349,13 +345,11 @@
   CONVERT_SMI_ARG_CHECKED(literals_index, 1);
   CONVERT_ARG_HANDLE_CHECKED(FixedArray, elements, 2);
 
-  Handle<JSObject> result;
   Handle<LiteralsArray> literals(closure->literals(), isolate);
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result,
+  RETURN_RESULT_OR_FAILURE(
+      isolate,
       CreateArrayLiteralImpl(isolate, literals, literals_index, elements,
                              ArrayLiteral::kShallowElements));
-  return *result;
 }
 
 }  // namespace internal