[turbofan] Remove obsolete JSTypeFeedbackSpecializer and JSTypeFeedbackLowering.

src/compiler/js-type-feedback.h

-// 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.
-
-#ifndef V8_COMPILER_JS_TYPE_FEEDBACK_H_
-#define V8_COMPILER_JS_TYPE_FEEDBACK_H_
-
-#include "src/utils.h"
-
-#include "src/compiler/graph-reducer.h"
-#include "src/compiler/js-graph.h"
-#include "src/compiler/node-aux-data.h"
-
-namespace v8 {
-namespace internal {
-
-class TypeFeedbackOracle;
-class SmallMapList;
-class CompilationDependencies;
-
-namespace compiler {
-
-// Stores type feedback information for nodes in the graph in a separate
-// data structure.
-class JSTypeFeedbackTable : public ZoneObject {
- public:
-  explicit JSTypeFeedbackTable(Zone* zone);
-
-  void Record(Node* node, TypeFeedbackId id);
-  void Record(Node* node, FeedbackVectorSlot slot);
-
- private:
-  friend class JSTypeFeedbackSpecializer;
-  typedef std::map<NodeId, TypeFeedbackId, std::less<NodeId>,
-                   zone_allocator<TypeFeedbackId> > TypeFeedbackIdMap;
-  typedef std::map<NodeId, FeedbackVectorSlot, std::less<NodeId>,
-                   zone_allocator<FeedbackVectorSlot> > FeedbackVectorSlotMap;
-
-  TypeFeedbackIdMap type_feedback_id_map_;
-  FeedbackVectorSlotMap feedback_vector_slot_map_;
-
-  TypeFeedbackId FindTypeFeedbackId(Node* node) {
-    TypeFeedbackIdMap::const_iterator it =
-        type_feedback_id_map_.find(node->id());
-    return it == type_feedback_id_map_.end() ? TypeFeedbackId::None()
-                                             : it->second;
-  }
-
-  FeedbackVectorSlot FindFeedbackVectorSlot(Node* node) {
-    FeedbackVectorSlotMap::const_iterator it =
-        feedback_vector_slot_map_.find(node->id());
-    return it == feedback_vector_slot_map_.end() ? FeedbackVectorSlot::Invalid()
-                                                 : it->second;
-  }
-};
-
-
-// Specializes a graph to the type feedback recorded in the
-// {js_type_feedback} provided to the constructor.
-class JSTypeFeedbackSpecializer : public AdvancedReducer {
- public:
-  enum DeoptimizationMode { kDeoptimizationEnabled, kDeoptimizationDisabled };
-
-  JSTypeFeedbackSpecializer(Editor* editor, JSGraph* jsgraph,
-                            JSTypeFeedbackTable* js_type_feedback,
-                            TypeFeedbackOracle* oracle,
-                            Handle<GlobalObject> global_object,
-                            DeoptimizationMode mode,
-                            CompilationDependencies* dependencies)
-      : AdvancedReducer(editor),
-        jsgraph_(jsgraph),
-        js_type_feedback_(js_type_feedback),
-        oracle_(oracle),
-        global_object_(global_object),
-        mode_(mode),
-        dependencies_(dependencies) {
-    CHECK_NOT_NULL(js_type_feedback);
-  }
-
-  Reduction Reduce(Node* node) override;
-
-  // Visible for unit testing.
-  Reduction ReduceJSLoadGlobal(Node* node);
-  Reduction ReduceJSLoadNamed(Node* node);
-  Reduction ReduceJSLoadProperty(Node* node);
-  Reduction ReduceJSStoreNamed(Node* node);
-  Reduction ReduceJSStoreProperty(Node* node);
-
- private:
-  JSGraph* jsgraph_;
-  JSTypeFeedbackTable* js_type_feedback_;
-  TypeFeedbackOracle* oracle_;
-  Handle<GlobalObject> global_object_;
-  DeoptimizationMode const mode_;
-  CompilationDependencies* dependencies_;
-
-  TypeFeedbackOracle* oracle() { return oracle_; }
-  Graph* graph() { return jsgraph_->graph(); }
-  JSGraph* jsgraph() { return jsgraph_; }
-  CommonOperatorBuilder* common() { return jsgraph_->common(); }
-  SimplifiedOperatorBuilder* simplified() { return jsgraph_->simplified(); }
-  DeoptimizationMode mode() const { return mode_; }
-
-  void BuildMapCheck(Node* receiver, Handle<Map> map, bool smi_check,
-                     Node* effect, Node* control, Node** success, Node** fail);
-
-  Node* GetFrameStateBefore(Node* node);
-};
-
-}  // namespace compiler
-}  // namespace internal
-}  // namespace v8
-
-#endif