Some cleanups, started implementing checked instance calls, better equality operation.

runtime/vm/flow_graph_optimizer.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_FLOW_GRAPH_OPTIMIZER_H_
 #define VM_FLOW_GRAPH_OPTIMIZER_H_
 
 #include "vm/intermediate_language.h"
 
 namespace dart {
@@ skipping 17 matching lines @@
 
   virtual void VisitStrictCompareComp(StrictCompareComp* comp);
   virtual void VisitEqualityCompare(EqualityCompareComp* comp);
 
   virtual void VisitDo(DoInstr* instr);
   virtual void VisitBind(BindInstr* instr);
 
  private:
   void VisitBlocks();
 
-  void TryReplaceWithBinaryOp(InstanceCallComp* comp, Token::Kind op_kind);
-  void TryReplaceWithUnaryOp(InstanceCallComp* comp, Token::Kind op_kind);
+  bool TryReplaceWithBinaryOp(InstanceCallComp* comp, Token::Kind op_kind);
+  bool TryReplaceWithUnaryOp(InstanceCallComp* comp, Token::Kind op_kind);
 
-  void TryInlineInstanceGetter(InstanceCallComp* comp);
-  void TryInlineInstanceSetter(InstanceSetterComp* comp);
+  bool TryInlineInstanceGetter(InstanceCallComp* comp);
+  bool TryInlineInstanceSetter(InstanceSetterComp* comp);
 
-  void TryInlineInstanceMethod(InstanceCallComp* comp);
+  bool TryInlineInstanceMethod(InstanceCallComp* comp);
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphOptimizer);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_OPTIMIZER_H_