[turbofan] delete graph and schedule before register allocation.

src/compiler/source-position.h

 // Copyright 2014 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_SOURCE_POSITION_H_
 #define V8_COMPILER_SOURCE_POSITION_H_
 
 #include "src/assembler.h"
 #include "src/compiler/node-aux-data.h"
 
@@ skipping 25 matching lines @@
 
 inline bool operator==(const SourcePosition& lhs, const SourcePosition& rhs) {
   return lhs.raw() == rhs.raw();
 }
 
 inline bool operator!=(const SourcePosition& lhs, const SourcePosition& rhs) {
   return !(lhs == rhs);
 }
 
 
-class SourcePositionTable FINAL {
+class SourcePositionTable FINAL : public ZoneObject {
  public:
   class Scope {
    public:
     Scope(SourcePositionTable* source_positions, SourcePosition position)
         : source_positions_(source_positions),
           prev_position_(source_positions->current_position_) {
       Init(position);
     }
     Scope(SourcePositionTable* source_positions, Node* node)
         : source_positions_(source_positions),
@@ skipping 33 matching lines @@
   NodeAuxData<SourcePosition> table_;
 
   DISALLOW_COPY_AND_ASSIGN(SourcePositionTable);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif