[Interpreter] Optimize BytecodeArrayBuilder and BytecodeArrayWriter.

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

 // 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.
 
 #include "src/interpreter/bytecode-dead-code-optimizer.h"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
 BytecodeDeadCodeOptimizer::BytecodeDeadCodeOptimizer(
     BytecodePipelineStage* next_stage)
     : next_stage_(next_stage), exit_seen_in_block_(false) {}
 
 // override
 Handle<BytecodeArray> BytecodeDeadCodeOptimizer::ToBytecodeArray(
-    Isolate* isolate, int fixed_register_count, int parameter_count,
+    Isolate* isolate, int register_count, int parameter_count,
     Handle<FixedArray> handler_table) {
-  return next_stage_->ToBytecodeArray(isolate, fixed_register_count,
-                                      parameter_count, handler_table);
+  return next_stage_->ToBytecodeArray(isolate, register_count, parameter_count,
+                                      handler_table);
 }
 
 // override
 void BytecodeDeadCodeOptimizer::Write(BytecodeNode* node) {
   // Don't emit dead code.
   if (exit_seen_in_block_) return;
 
   switch (node->bytecode()) {
     case Bytecode::kReturn:
     case Bytecode::kThrow:
@@ skipping 37 matching lines @@
 void BytecodeDeadCodeOptimizer::BindLabel(const BytecodeLabel& target,
                                           BytecodeLabel* label) {
   next_stage_->BindLabel(target, label);
   // exit_seen_in_block_ was reset when target was bound, so shouldn't be
   // changed here.
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8