Add Smi::Zero and replace all Smi::FromInt(0) calls

src/runtime/runtime-array.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/code-stubs.h"
 #include "src/conversions-inl.h"
 #include "src/elements.h"
@@ skipping 10 matching lines @@
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSArray, prototype, 0);
   Object* length = prototype->length();
   CHECK(length->IsSmi());
   CHECK(Smi::cast(length)->value() == 0);
   CHECK(prototype->HasFastSmiOrObjectElements());
   // This is necessary to enable fast checks for absence of elements
   // on Array.prototype and below.
   prototype->set_elements(isolate->heap()->empty_fixed_array());
-  return Smi::FromInt(0);
+  return Smi::kZero;
 }
 
 static void InstallCode(Isolate* isolate, Handle<JSObject> holder,
                         const char* name, Handle<Code> code, int argc = -1) {
   Handle<String> key = isolate->factory()->InternalizeUtf8String(name);
   Handle<JSFunction> optimized =
       isolate->factory()->NewFunctionWithoutPrototype(key, code);
   if (argc < 0) {
     optimized->shared()->DontAdaptArguments();
   } else {
@@ skipping 91 matching lines @@
   JSObject::ValidateElements(from);
   JSObject::ValidateElements(to);
 
   Handle<FixedArrayBase> new_elements(from->elements());
   ElementsKind from_kind = from->GetElementsKind();
   Handle<Map> new_map = JSObject::GetElementsTransitionMap(to, from_kind);
   JSObject::SetMapAndElements(to, new_map, new_elements);
   to->set_length(from->length());
 
   JSObject::ResetElements(from);
-  from->set_length(Smi::FromInt(0));
+  from->set_length(Smi::kZero);
 
   JSObject::ValidateElements(to);
   return *to;
 }
 
 
 // How many elements does this object/array have?
 RUNTIME_FUNCTION(Runtime_EstimateNumberOfElements) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
@@ skipping 215 matching lines @@
 
   if (key < 0) {
     return object->elements();
   }
 
   uint32_t capacity = static_cast<uint32_t>(object->elements()->length());
   uint32_t index = static_cast<uint32_t>(key);
 
   if (index >= capacity) {
     if (!object->GetElementsAccessor()->GrowCapacity(object, index)) {
-      return Smi::FromInt(0);
+      return Smi::kZero;
     }
   }
 
   // On success, return the fixed array elements.
   return object->elements();
 }
 
 
 RUNTIME_FUNCTION(Runtime_HasComplexElements) {
   HandleScope scope(isolate);
@@ skipping 244 matching lines @@
       if (search_element->StrictEquals(*element_k)) {
         return *index_obj;
       }
     }
   }
   return Smi::FromInt(-1);
 }
 
 }  // namespace internal
 }  // namespace v8