Reland "Refactor compilation dependency handling."

src/objects.h

 // Copyright 2012 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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 5678 matching lines @@
 
   // Code aging -- platform-specific
   static void PatchPlatformCodeAge(Isolate* isolate,
                                    byte* sequence, Age age,
                                    MarkingParity parity);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Code);
 };
 
 
-class CompilationInfo;
-
 // This class describes the layout of dependent codes array of a map. The
 // array is partitioned into several groups of dependent codes. Each group
 // contains codes with the same dependency on the map. The array has the
 // following layout for n dependency groups:
 //
 // +----+----+-----+----+---------+----------+-----+---------+-----------+
 // | C1 | C2 | ... | Cn | group 1 |  group 2 | ... | group n | undefined |
 // +----+----+-----+----+---------+----------+-----+---------+-----------+
 //
 // The first n elements are Smis, each of them specifies the number of codes
@@ skipping 49 matching lines @@
     explicit GroupStartIndexes(DependentCode* entries);
     void Recompute(DependentCode* entries);
     int at(int i) { return start_indexes_[i]; }
     int number_of_entries() { return start_indexes_[kGroupCount]; }
    private:
     int start_indexes_[kGroupCount + 1];
   };
 
   bool Contains(DependencyGroup group, WeakCell* code_cell);
 
-  static Handle<DependentCode> InsertCompilationInfo(
+  static Handle<DependentCode> InsertCompilationDependencies(
       Handle<DependentCode> entries, DependencyGroup group,
       Handle<Foreign> info);
 
   static Handle<DependentCode> InsertWeakCode(Handle<DependentCode> entries,
                                               DependencyGroup group,
                                               Handle<WeakCell> code_cell);
 
   void UpdateToFinishedCode(DependencyGroup group, Foreign* info,
                             WeakCell* code_cell);
 
-  void RemoveCompilationInfo(DependentCode::DependencyGroup group,
-                             Foreign* info);
+  void RemoveCompilationDependencies(DependentCode::DependencyGroup group,
+                                     Foreign* info);
 
   void DeoptimizeDependentCodeGroup(Isolate* isolate,
                                     DependentCode::DependencyGroup group);
 
   bool MarkCodeForDeoptimization(Isolate* isolate,
                                  DependentCode::DependencyGroup group);
 
   // The following low-level accessors should only be used by this class
   // and the mark compact collector.
   inline int number_of_entries(DependencyGroup group);
   inline void set_number_of_entries(DependencyGroup group, int value);
   inline Object* object_at(int i);
   inline void set_object_at(int i, Object* object);
   inline void clear_at(int i);
   inline void copy(int from, int to);
   DECLARE_CAST(DependentCode)
 
-  static DependentCode* ForObject(Handle<HeapObject> object,
-                                  DependencyGroup group);
-
   static const char* DependencyGroupName(DependencyGroup group);
   static void SetMarkedForDeoptimization(Code* code, DependencyGroup group);
 
  private:
   static Handle<DependentCode> Insert(Handle<DependentCode> entries,
                                       DependencyGroup group,
                                       Handle<Object> object);
   static Handle<DependentCode> EnsureSpace(Handle<DependentCode> entries);
   // Make a room at the end of the given group by moving out the first
   // code objects of the subsequent groups.
@@ skipping 537 matching lines @@
   bool IsJSGlobalObjectMap() {
     return instance_type() == JS_GLOBAL_OBJECT_TYPE;
   }
   bool IsGlobalObjectMap() {
     const InstanceType type = instance_type();
     return type == JS_GLOBAL_OBJECT_TYPE || type == JS_BUILTINS_OBJECT_TYPE;
   }
 
   inline bool CanOmitMapChecks();
 
-  static void AddDependentCompilationInfo(Handle<Map> map,
-                                          DependentCode::DependencyGroup group,
-                                          CompilationInfo* info);
-
   static void AddDependentCode(Handle<Map> map,
                                DependentCode::DependencyGroup group,
                                Handle<Code> code);
 
   bool IsMapInArrayPrototypeChain();
 
   static Handle<WeakCell> WeakCellForMap(Handle<Map> map);
 
   // Dispatched behavior.
   DECLARE_PRINTER(Map)
@@ skipping 2182 matching lines @@
   bool SitePointsToLiteral() {
     // If transition_info is a smi, then it represents an ElementsKind
     // for a constructed array. Otherwise, it must be a boilerplate
     // for an object or array literal.
     return transition_info()->IsJSArray() || transition_info()->IsJSObject();
   }
 
   static void DigestTransitionFeedback(Handle<AllocationSite> site,
                                        ElementsKind to_kind);
 
-  static void RegisterForDeoptOnTenureChange(Handle<AllocationSite> site,
-                                             CompilationInfo* info);
-
-  static void RegisterForDeoptOnTransitionChange(Handle<AllocationSite> site,
-                                                 CompilationInfo* info);
-
   DECLARE_PRINTER(AllocationSite)
   DECLARE_VERIFIER(AllocationSite)
 
   DECLARE_CAST(AllocationSite)
   static inline AllocationSiteMode GetMode(
       ElementsKind boilerplate_elements_kind);
   static inline AllocationSiteMode GetMode(ElementsKind from, ElementsKind to);
   static inline bool CanTrack(InstanceType type);
 
   static const int kTransitionInfoOffset = HeapObject::kHeaderSize;
@@ skipping 10 matching lines @@
   // field.
   static const int kPointerFieldsBeginOffset = kTransitionInfoOffset;
   static const int kPointerFieldsEndOffset = kWeakNextOffset;
 
   // For other visitors, use the fixed body descriptor below.
   typedef FixedBodyDescriptor<HeapObject::kHeaderSize,
                               kDependentCodeOffset + kPointerSize,
                               kSize> BodyDescriptor;
 
  private:
-  static void AddDependentCompilationInfo(Handle<AllocationSite> site,
-                                          DependentCode::DependencyGroup group,
-                                          CompilationInfo* info);
-
   bool PretenuringDecisionMade() {
     return pretenure_decision() != kUndecided;
   }
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSite);
 };
 
 
 class AllocationMemento: public Struct {
  public:
@@ skipping 1212 matching lines @@
   static PropertyCellType UpdatedType(Handle<PropertyCell> cell,
                                       Handle<Object> value,
                                       PropertyDetails details);
   static Handle<Object> UpdateCell(Handle<NameDictionary> dictionary, int entry,
                                    Handle<Object> value,
                                    PropertyDetails details);
 
   static Handle<PropertyCell> InvalidateEntry(Handle<NameDictionary> dictionary,
                                               int entry);
 
-  static void AddDependentCompilationInfo(Handle<PropertyCell> cell,
-                                          CompilationInfo* info);
-
   DECLARE_CAST(PropertyCell)
 
   // Dispatched behavior.
   DECLARE_PRINTER(PropertyCell)
   DECLARE_VERIFIER(PropertyCell)
 
   // Layout description.
   static const int kValueOffset = HeapObject::kHeaderSize;
   static const int kDependentCodeOffset = kValueOffset + kPointerSize;
   static const int kSize = kDependentCodeOffset + kPointerSize;
@@ skipping 1240 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_