Switch CFGBuilder to use NodeMarker.

src/compiler/scheduler.h

 // 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.
 
 #ifndef V8_COMPILER_SCHEDULER_H_
 #define V8_COMPILER_SCHEDULER_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/opcodes.h"
@@ skipping 31 matching lines @@
   //                   +----> kSchedulable ----+--------> kScheduled
   //
   // 1) GetPlacement(): kUnknown -> kCoupled|kSchedulable|kFixed
   // 2) UpdatePlacement(): kCoupled|kSchedulable -> kFixed|kScheduled
   enum Placement { kUnknown, kSchedulable, kFixed, kCoupled, kScheduled };
 
   // Per-node data tracked during scheduling.
   struct SchedulerData {
     BasicBlock* minimum_block_;  // Minimum legal RPO placement.
     int unscheduled_count_;      // Number of unscheduled uses of this node.
-    bool is_connected_control_;  // {true} if control-connected to the end node.
     Placement placement_;        // Whether the node is fixed, schedulable,
                                  // coupled to another node, or not yet known.
   };
 
   Zone* zone_;
   Graph* graph_;
   Schedule* schedule_;
   NodeVectorVector scheduled_nodes_;     // Per-block list of nodes in reverse.
   NodeVector schedule_root_nodes_;       // Fixed root nodes seed the worklist.
   ZoneQueue<Node*> schedule_queue_;      // Worklist of schedulable nodes.
@@ skipping 43 matching lines @@
 
   void FuseFloatingControl(BasicBlock* block, Node* node);
   void MovePlannedNodes(BasicBlock* from, BasicBlock* to);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_SCHEDULER_H_