[ic] Smi-handlers are now able to represent loads of constants from descriptor array.

src/ic/handler-configuration-inl.h

 // Copyright 2016 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.
 
 #ifndef V8_IC_HANDLER_CONFIGURATION_INL_H_
 #define V8_IC_HANDLER_CONFIGURATION_INL_H_
 
 #include "src/ic/handler-configuration.h"
 
 #include "src/field-index-inl.h"
+#include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {
 
 Handle<Object> SmiHandler::MakeLoadFieldHandler(Isolate* isolate,
                                                 FieldIndex field_index) {
-  int config = LoadHandlerTypeBit::encode(kLoadICHandlerForProperties) |
+  int config = LoadHandlerTypeBits::encode(kLoadICHandlerForFields) |
                FieldOffsetIsInobject::encode(field_index.is_inobject()) |
                FieldOffsetIsDouble::encode(field_index.is_double()) |
                FieldOffsetOffset::encode(field_index.offset());
   return handle(Smi::FromInt(config), isolate);
 }
 
+Handle<Object> SmiHandler::MakeLoadConstantHandler(Isolate* isolate,
+                                                   int descriptor) {
+  int config = LoadHandlerTypeBits::encode(kLoadICHandlerForConstants) |
+               ValueIndexInDescriptorArray::encode(
+                   DescriptorArray::ToValueIndex(descriptor));
+  return handle(Smi::FromInt(config), isolate);
+}
+
 Handle<Object> SmiHandler::MakeKeyedLoadHandler(Isolate* isolate,
                                                 ElementsKind elements_kind,
                                                 bool convert_hole_to_undefined,
                                                 bool is_js_array) {
-  int config = LoadHandlerTypeBit::encode(kLoadICHandlerForElements) |
+  int config = LoadHandlerTypeBits::encode(kLoadICHandlerForElements) |
                KeyedLoadElementsKind::encode(elements_kind) |
                KeyedLoadConvertHole::encode(convert_hole_to_undefined) |
                KeyedLoadIsJsArray::encode(is_js_array);
   return handle(Smi::FromInt(config), isolate);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_IC_HANDLER_CONFIGURATION_INL_H_