[turbofan] delete graph and schedule before register allocation.

src/compiler/common-operator.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_COMMON_OPERATOR_H_
 #define V8_COMPILER_COMMON_OPERATOR_H_
 
 #include "src/compiler/machine-type.h"
 #include "src/unique.h"
 
@@ skipping 109 matching lines @@
 bool operator==(FrameStateCallInfo const&, FrameStateCallInfo const&);
 bool operator!=(FrameStateCallInfo const&, FrameStateCallInfo const&);
 
 size_t hash_value(FrameStateCallInfo const&);
 
 std::ostream& operator<<(std::ostream&, FrameStateCallInfo const&);
 
 
 // Interface for building common operators that can be used at any level of IR,
 // including JavaScript, mid-level, and low-level.
-class CommonOperatorBuilder FINAL {
+class CommonOperatorBuilder FINAL : public ZoneObject {
  public:
   explicit CommonOperatorBuilder(Zone* zone);
 
   const Operator* Dead();
   const Operator* End();
   const Operator* Branch(BranchHint = BranchHint::kNone);
   const Operator* IfTrue();
   const Operator* IfFalse();
   const Operator* Throw();
   const Operator* Terminate(int effects);
@@ skipping 22 matching lines @@
       OutputFrameStateCombine state_combine,
       MaybeHandle<JSFunction> jsfunction = MaybeHandle<JSFunction>());
   const Operator* Call(const CallDescriptor* descriptor);
   const Operator* Projection(size_t index);
 
  private:
   Zone* zone() const { return zone_; }
 
   const CommonOperatorBuilderImpl& impl_;
   Zone* const zone_;
+
+  DISALLOW_COPY_AND_ASSIGN(CommonOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_COMMON_OPERATOR_H_