[Interpreter] Optimize BytecodeArrayBuilder and BytecodeArrayWriter.

src/interpreter/bytecode-dead-code-optimizer.h

 // Copyright 2016 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_DEAD_CODE_OPTIMIZER_H_
 #define V8_INTERPRETER_BYTECODE_DEAD_CODE_OPTIMIZER_H_
 
 #include "src/interpreter/bytecode-pipeline.h"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
 // An optimization stage for eliminating obviously dead code in bytecode
 // generation.
 class BytecodeDeadCodeOptimizer final : public BytecodePipelineStage,
                                         public ZoneObject {
  public:
   explicit BytecodeDeadCodeOptimizer(BytecodePipelineStage* next_stage);
 
   // BytecodePipelineStage interface.
   void Write(BytecodeNode* node) override;
   void WriteJump(BytecodeNode* node, BytecodeLabel* label) override;
   void BindLabel(BytecodeLabel* label) override;
   void BindLabel(const BytecodeLabel& target, BytecodeLabel* label) override;
   Handle<BytecodeArray> ToBytecodeArray(
-      Isolate* isolate, int fixed_register_count, int parameter_count,
+      Isolate* isolate, int register_count, int parameter_count,
       Handle<FixedArray> handler_table) override;
 
  private:
   BytecodePipelineStage* next_stage_;
   bool exit_seen_in_block_;
 
   DISALLOW_COPY_AND_ASSIGN(BytecodeDeadCodeOptimizer);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_DEAD_CODE_OPTIMIZER_H_