Remove previous_ast_id and related code in hydrogen.

src/hydrogen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 90 matching lines @@
   bool IsStartBlock() const { return block_id() == 0; }
   void PostProcessLoopHeader(IterationStatement* stmt);
 
   bool IsFinished() const { return end_ != NULL; }
   void AddPhi(HPhi* phi);
   void RemovePhi(HPhi* phi);
   void AddInstruction(HInstruction* instr);
   bool Dominates(HBasicBlock* other) const;
   int LoopNestingDepth() const;
 
-  void SetInitialEnvironment(HEnvironment* env, BailoutId previous_id);
+  void SetInitialEnvironment(HEnvironment* env);
   void ClearEnvironment() { last_environment_ = NULL; }
   bool HasEnvironment() const { return last_environment_ != NULL; }
   void UpdateEnvironment(HEnvironment* env) { last_environment_ = env; }
   HBasicBlock* parent_loop_header() const { return parent_loop_header_; }
 
   void set_parent_loop_header(HBasicBlock* block) {
     ASSERT(parent_loop_header_ == NULL);
     parent_loop_header_ = block;
   }
 
@@ skipping 355 matching lines @@
   FrameType frame_type() const { return frame_type_; }
   int parameter_count() const { return parameter_count_; }
   int specials_count() const { return specials_count_; }
   int local_count() const { return local_count_; }
   HEnvironment* outer() const { return outer_; }
   int pop_count() const { return pop_count_; }
   int push_count() const { return push_count_; }
 
   BailoutId ast_id() const { return ast_id_; }
   void set_ast_id(BailoutId id) { ast_id_ = id; }
-  BailoutId previous_ast_id() const { return previous_ast_id_; }
-  void set_previous_ast_id(BailoutId id) { previous_ast_id_ = id; }
 
   HEnterInlined* entry() const { return entry_; }
   void set_entry(HEnterInlined* entry) { entry_ = entry; }
 
   int length() const { return values_.length(); }
   bool is_special_index(int i) const {
     return i >= parameter_count() && i < parameter_count() + specials_count();
   }
 
   int first_expression_index() const {
@@ skipping 141 matching lines @@
   GrowableBitVector assigned_variables_;
   FrameType frame_type_;
   int parameter_count_;
   int specials_count_;
   int local_count_;
   HEnvironment* outer_;
   HEnterInlined* entry_;
   int pop_count_;
   int push_count_;
   BailoutId ast_id_;
-  BailoutId previous_ast_id_;
   Zone* zone_;
 };
 
 
 class HInferRepresentation BASE_EMBEDDED {
  public:
   explicit HInferRepresentation(HGraph* graph)
       : graph_(graph),
         worklist_(8, graph->zone()),
         in_worklist_(graph->GetMaximumValueID(), graph->zone()) { }
@@ skipping 238 matching lines @@
     no_side_effects_scope_count_++;
   }
 
   void DecrementInNoSideEffectsScope() {
     no_side_effects_scope_count_--;
   }
 
  protected:
   virtual bool BuildGraph() = 0;
 
-  HBasicBlock* CreateBasicBlock(HEnvironment* envy,
-                                BailoutId previous_ast_id);
-  HBasicBlock* CreateLoopHeaderBlock(BailoutId previous_ast_id);
+  HBasicBlock* CreateBasicBlock(HEnvironment* envy);
+  HBasicBlock* CreateLoopHeaderBlock();
 
   // Building common constructs
   HInstruction* BuildExternalArrayElementAccess(
       HValue* external_elements,
       HValue* checked_key,
       HValue* val,
       HValue* dependency,
       ElementsKind elements_kind,
       bool is_store);
 
@@ skipping 27 matching lines @@
       ElementsKind elements_kind,
       bool is_store,
       KeyedAccessStoreMode store_mode,
       Representation checked_index_representation = Representation::None());
 
   HInstruction* BuildStoreMap(HValue* object, HValue* map);
   HInstruction* BuildStoreMap(HValue* object, Handle<Map> map);
 
   class CheckBuilder {
    public:
-    explicit CheckBuilder(HGraphBuilder* builder);
+    explicit CheckBuilder(HGraphBuilder* builder, BailoutId id);
     ~CheckBuilder() {
       if (!finished_) End();
     }
 
     HValue* CheckNotUndefined(HValue* value);
     HValue* CheckIntegerCompare(HValue* left, HValue* right, Token::Value op);
     HValue* CheckIntegerEq(HValue* left, HValue* right);
     void End();
 
    private:
     Zone* zone() { return builder_->zone(); }
 
     HGraphBuilder* builder_;
     bool finished_;
     HBasicBlock* failure_block_;
     HBasicBlock* merge_block_;
     BailoutId id_;
   };
 
   class IfBuilder {
    public:
-    explicit IfBuilder(HGraphBuilder* builder);
+    explicit IfBuilder(HGraphBuilder* builder, BailoutId id);
     ~IfBuilder() {
       if (!finished_) End();
     }
 
     HInstruction* BeginIf(
         HValue* left,
         HValue* right,
         Token::Value token,
         Representation input_representation = Representation::Integer32());
     HInstruction* BeginIfObjectsEqual(HValue* left, HValue* right);
@@ skipping 18 matching lines @@
    public:
     enum Direction {
       kPreIncrement,
       kPostIncrement,
       kPreDecrement,
       kPostDecrement
     };
 
     LoopBuilder(HGraphBuilder* builder,
                 HValue* context,
-                Direction direction);
+                Direction direction,
+                BailoutId id);
     ~LoopBuilder() {
       ASSERT(finished_);
     }
 
     HValue* BeginBody(
         HValue* initial,
         HValue* terminating,
         Token::Value token,
         Representation input_representation = Representation::Integer32());
     void EndBody();
@@ skipping 28 matching lines @@
   };
 
   HValue* BuildNewElementsCapacity(HValue* context,
                                    HValue* old_capacity);
 
   void BuildNewSpaceArrayCheck(HValue* length,
                                ElementsKind kind);
 
   HValue* BuildAllocateElements(HValue* context,
                                 ElementsKind kind,
-                                HValue* capacity);
+                                HValue* capacity,
+                                BailoutId ast_id);
 
   void BuildInitializeElements(HValue* elements,
                                ElementsKind kind,
                                HValue* capacity);
 
   HValue* BuildAllocateAndInitializeElements(HValue* context,
                                              ElementsKind kind,
                                              HValue* capacity);
 
   HValue* BuildGrowElementsCapacity(HValue* object,
                                     HValue* elements,
                                     ElementsKind kind,
                                     HValue* length,
-                                    HValue* new_capacity);
+                                    HValue* new_capacity,
+                                    BailoutId ast_id);
 
   void BuildFillElementsWithHole(HValue* context,
                                  HValue* elements,
                                  ElementsKind elements_kind,
                                  HValue* from,
-                                 HValue* to);
+                                 HValue* to,
+                                 BailoutId ast_id);
 
   void BuildCopyElements(HValue* context,
                          HValue* from_elements,
                          ElementsKind from_elements_kind,
                          HValue* to_elements,
                          ElementsKind to_elements_kind,
                          HValue* length,
-                         HValue* capacity);
+                         HValue* capacity,
+                         BailoutId ast_id);
 
   HValue* BuildCloneShallowArray(HContext* context,
                                  HValue* boilerplate,
                                  AllocationSiteMode mode,
                                  ElementsKind kind,
                                  int length);
 
  private:
   HGraphBuilder();
   CompilationInfo* info_;
@@ skipping 685 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_