[turbofan] Address a couple of Type-related TODOs.

src/compiler/access-info.cc

 // Copyright 2015 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 <ostream>
 
 #include "src/accessors.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-info.h"
 #include "src/compiler/type-cache.h"
@@ skipping 282 matching lines @@
         case DATA: {
           int index = descriptors->GetFieldIndex(number);
           Representation details_representation = details.representation();
           FieldIndex field_index = FieldIndex::ForPropertyIndex(
               *map, index, details_representation.IsDouble());
           Type* field_type = Type::NonInternal();
           MachineRepresentation field_representation =
               MachineRepresentation::kTagged;
           MaybeHandle<Map> field_map;
           if (details_representation.IsSmi()) {
-            field_type = type_cache_.kSmi;
+            field_type = Type::SignedSmall();
             field_representation = MachineRepresentation::kTaggedSigned;
           } else if (details_representation.IsDouble()) {
             field_type = type_cache_.kFloat64;
             field_representation = MachineRepresentation::kFloat64;
           } else if (details_representation.IsHeapObject()) {
             // Extract the field type from the property details (make sure its
             // representation is TaggedPointer to reflect the heap object case).
             field_representation = MachineRepresentation::kTaggedPointer;
             Handle<FieldType> descriptors_field_type(
                 descriptors->GetFieldType(number), isolate());
@@ skipping 176 matching lines @@
     // TODO(bmeurer): Handle transition to data constant?
     if (details.type() != DATA) return false;
     int const index = details.field_index();
     Representation details_representation = details.representation();
     FieldIndex field_index = FieldIndex::ForPropertyIndex(
         *transition_map, index, details_representation.IsDouble());
     Type* field_type = Type::NonInternal();
     MaybeHandle<Map> field_map;
     MachineRepresentation field_representation = MachineRepresentation::kTagged;
     if (details_representation.IsSmi()) {
-      field_type = type_cache_.kSmi;
+      field_type = Type::SignedSmall();
       field_representation = MachineRepresentation::kTaggedSigned;
     } else if (details_representation.IsDouble()) {
       field_type = type_cache_.kFloat64;
       field_representation = MachineRepresentation::kFloat64;
     } else if (details_representation.IsHeapObject()) {
       // Extract the field type from the property details (make sure its
       // representation is TaggedPointer to reflect the heap object case).
       field_representation = MachineRepresentation::kTaggedPointer;
       Handle<FieldType> descriptors_field_type(
           transition_map->instance_descriptors()->GetFieldType(number),
@@ skipping 20 matching lines @@
   }
   return false;
 }
 
 
 Factory* AccessInfoFactory::factory() const { return isolate()->factory(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8