[Interpreter] Avoid allocating pairs array in VisitDeclarations.

src/interpreter/bytecode-generator.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_INTERPRETER_BYTECODE_GENERATOR_H_
 #define V8_INTERPRETER_BYTECODE_GENERATOR_H_
 
 #include "src/ast/ast.h"
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-label.h"
@@ skipping 17 matching lines @@
 
 #define DECLARE_VISIT(type) void Visit##type(type* node);
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
   // Visiting function for declarations list and statements are overridden.
   void VisitDeclarations(ZoneList<Declaration*>* declarations);
   void VisitStatements(ZoneList<Statement*>* statments);
 
  private:
+  class AccumulatorResultScope;
   class ContextScope;
   class ControlScope;
   class ControlScopeForBreakable;
   class ControlScopeForIteration;
   class ControlScopeForTopLevel;
   class ControlScopeForTryCatch;
   class ControlScopeForTryFinally;
   class ExpressionResultScope;
   class EffectResultScope;
-  class AccumulatorResultScope;
+  class GlobalDeclarationsBuilder;
   class RegisterResultScope;
   class RegisterAllocationScope;
 
-  void MakeBytecodeBody();
+  void GenerateBytecode();
+  void GenerateBytecodeBody();
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
 
   // Dispatched from VisitBinaryOperation.
   void VisitArithmeticExpression(BinaryOperation* binop);
   void VisitCommaExpression(BinaryOperation* binop);
   void VisitLogicalOrExpression(BinaryOperation* binop);
   void VisitLogicalAndExpression(BinaryOperation* binop);
 
   // Dispatched from VisitUnaryOperation.
@@ skipping 127 matching lines @@
   }
   ExpressionResultScope* execution_result() const { return execution_result_; }
   inline void set_register_allocator(
       RegisterAllocationScope* register_allocator) {
     register_allocator_ = register_allocator;
   }
   RegisterAllocationScope* register_allocator() const {
     return register_allocator_;
   }
 
-  ZoneVector<Handle<Object>>* globals() { return &globals_; }
+  GlobalDeclarationsBuilder* globals_builder() { return globals_builder_; }
   inline LanguageMode language_mode() const;
   int feedback_index(FeedbackVectorSlot slot) const;
 
   Isolate* isolate_;
   Zone* zone_;
   BytecodeArrayBuilder* builder_;
   CompilationInfo* info_;
   Scope* scope_;
-  ZoneVector<Handle<Object>> globals_;
+  GlobalDeclarationsBuilder* globals_builder_;
+  ZoneVector<GlobalDeclarationsBuilder*> global_declarations_;
   ControlScope* execution_control_;
   ContextScope* execution_context_;
   ExpressionResultScope* execution_result_;
   RegisterAllocationScope* register_allocator_;
   ZoneVector<BytecodeLabel> generator_resume_points_;
   Register generator_state_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_GENERATOR_H_