[turbofan] remove some of the dependency of Instruction on Schedule

src/compiler/schedule.cc

 // Copyright 2013 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/compiler/node.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/compiler/schedule.h"
 #include "src/ostreams.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 BasicBlock::BasicBlock(Zone* zone, Id id)
     : rpo_number_(-1),
       dominator_(NULL),
       loop_header_(NULL),
       loop_depth_(0),
       loop_end_(-1),
-      code_start_(-1),
-      code_end_(-1),
-      deferred_(false),
       control_(kNone),
       control_input_(NULL),
       nodes_(zone),
       successors_(zone),
       predecessors_(zone),
       id_(id) {}
 
 
 bool BasicBlock::LoopContains(BasicBlock* block) const {
   // RPO numbers must be initialized.
@@ skipping 45 matching lines @@
 
 
 void BasicBlock::set_rpo_number(int32_t rpo_number) {
   rpo_number_ = rpo_number;
 }
 
 
 void BasicBlock::set_loop_end(int32_t loop_end) { loop_end_ = loop_end; }
 
 
-void BasicBlock::set_code_start(int32_t code_start) {
-  code_start_ = code_start;
-}
-
-
-void BasicBlock::set_code_end(int32_t code_end) { code_end_ = code_end; }
-
-
 void BasicBlock::set_loop_header(BasicBlock* loop_header) {
   loop_header_ = loop_header;
 }
 
 
 size_t BasicBlock::PredecessorIndexOf(BasicBlock* predecessor) {
   size_t j = 0;
   for (BasicBlock::Predecessors::iterator i = predecessors_.begin();
        i != predecessors_.end(); ++i, ++j) {
     if (*i == predecessor) break;
@@ skipping 207 matching lines @@
       }
       os << "\n";
     }
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8