Further reduce LookupResult usage

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <algorithm>
 
 #include "src/v8.h"
 
@@ skipping 5959 matching lines @@
 
 
 bool HOptimizedGraphBuilder::PropertyAccessInfo::LoadResult(Handle<Map> map) {
   if (!IsLoad() && lookup_.IsProperty() &&
       (lookup_.IsReadOnly() || !lookup_.IsCacheable())) {
     return false;
   }
 
   if (lookup_.IsField()) {
     // Construct the object field access.
-    access_ = HObjectAccess::ForField(map, &lookup_, name_);
+    int index = lookup_.GetLocalFieldIndexFromMap(*map);
+    Representation representation = lookup_.representation();
+    access_ = HObjectAccess::ForField(map, index, representation, name_);
 
     // Load field map for heap objects.
     LoadFieldMaps(map);
   } else if (lookup_.IsPropertyCallbacks()) {
     Handle<Object> callback(lookup_.GetValueFromMap(*map), isolate());
     if (!callback->IsAccessorPair()) return false;
     Object* raw_accessor = IsLoad()
         ? Handle<AccessorPair>::cast(callback)->getter()
         : Handle<AccessorPair>::cast(callback)->setter();
     if (!raw_accessor->IsJSFunction()) return false;
@@ skipping 89 matching lines @@
     return !lookup_.IsReadOnly() && lookup_.IsCacheable();
   }
   if (!LookupInPrototypes()) return false;
   if (IsLoad()) return true;
 
   if (lookup_.IsPropertyCallbacks()) return true;
   Handle<Map> map = this->map();
   map->LookupTransition(NULL, *name_, &lookup_);
   if (lookup_.IsTransitionToField() && map->unused_property_fields() > 0) {
     // Construct the object field access.
-    access_ = HObjectAccess::ForField(map, &lookup_, name_);
+    int descriptor = transition()->LastAdded();
+    int index =
+        transition()->instance_descriptors()->GetFieldIndex(descriptor) -
+        map->inobject_properties();
+    PropertyDetails details =
+        transition()->instance_descriptors()->GetDetails(descriptor);
+    Representation representation = details.representation();
+    access_ = HObjectAccess::ForField(map, index, representation, name_);
 
     // Load field map for heap objects.
     LoadFieldMaps(transition());
     return true;
   }
   return false;
 }
 
 
 bool HOptimizedGraphBuilder::PropertyAccessInfo::CanAccessAsMonomorphic(
@@ skipping 6385 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal