[Interpreter] Avoid allocating pairs array in VisitDeclarations.

src/interpreter/bytecode-array-builder.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_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include "src/ast/ast.h"
 #include "src/interpreter/bytecode-array-writer.h"
 #include "src/interpreter/bytecode-register-allocator.h"
@@ skipping 61 matching lines @@
   Register Parameter(int parameter_index) const;
 
   // Return true if the register |reg| represents a parameter or a
   // local.
   bool RegisterIsParameterOrLocal(Register reg) const;
 
   // Returns true if the register |reg| is a live temporary register.
   bool TemporaryRegisterIsLive(Register reg) const;
 
   // Constant loads to accumulator.
+  BytecodeArrayBuilder& LoadConstantPoolEntry(size_t entry);
   BytecodeArrayBuilder& LoadLiteral(v8::internal::Smi* value);
   BytecodeArrayBuilder& LoadLiteral(Handle<Object> object);
   BytecodeArrayBuilder& LoadUndefined();
   BytecodeArrayBuilder& LoadNull();
   BytecodeArrayBuilder& LoadTheHole();
   BytecodeArrayBuilder& LoadTrue();
   BytecodeArrayBuilder& LoadFalse();
 
   // Global loads to the accumulator and stores from the accumulator.
   BytecodeArrayBuilder& LoadGlobal(int feedback_slot, TypeofMode typeof_mode);
@@ skipping 159 matching lines @@
 
   // Exception handling.
   BytecodeArrayBuilder& MarkHandler(int handler_id, bool will_catch);
   BytecodeArrayBuilder& MarkTryBegin(int handler_id, Register context);
   BytecodeArrayBuilder& MarkTryEnd(int handler_id);
 
   // Creates a new handler table entry and returns a {hander_id} identifying the
   // entry, so that it can be referenced by above exception handling support.
   int NewHandlerEntry() { return handler_table_builder()->NewHandlerEntry(); }
 
+  // Reserves a slot in the constant pool which can later be inserted.
+  size_t ReserveConstantPoolEntry();
+  // Inserts a entry into a reserved constant pool entry.
+  void InsertReservedConstantPoolEntry(size_t entry, Handle<Object> object);
+
   void InitializeReturnPosition(FunctionLiteral* literal);
 
   void SetStatementPosition(Statement* stmt);
   void SetExpressionPosition(Expression* expr);
   void SetExpressionAsStatementPosition(Expression* expr);
 
   // Accessors
   TemporaryRegisterAllocator* temporary_register_allocator() {
     return &temporary_allocator_;
   }
@@ skipping 100 matching lines @@
   BytecodeSourceInfo latest_source_info_;
 
   DISALLOW_COPY_AND_ASSIGN(BytecodeArrayBuilder);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_