Do not recompute unary_checks repeatedly. Add special (and quicker) way to check for method overrid…

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"
 #include "vm/flow_graph.h"
 
@@ skipping 45 matching lines @@
                             intptr_t class_id,
                             Value** array,
                             Value** index);
   bool TryReplaceWithStoreIndexed(InstanceCallInstr* call);
   bool TryReplaceWithLoadIndexed(InstanceCallInstr* call);
 
   bool TryReplaceWithBinaryOp(InstanceCallInstr* call, Token::Kind op_kind);
   bool TryReplaceWithUnaryOp(InstanceCallInstr* call, Token::Kind op_kind);
 
   bool TryInlineInstanceGetter(InstanceCallInstr* call);
-  bool TryInlineInstanceSetter(InstanceCallInstr* call);
+  bool TryInlineInstanceSetter(InstanceCallInstr* call,
+                               const ICData& unary_ic_data);
 
   bool TryInlineInstanceMethod(InstanceCallInstr* call);
 
   void AddCheckClass(InstanceCallInstr* call, Value* value);
 
   void InsertAfter(Instruction* prev,
                    Instruction* instr,
                    Environment* env,
                    Definition::UseKind use_kind);
 
@@ skipping 147 matching lines @@
 
   // Worklists of blocks and definitions.
   GrowableArray<BlockEntryInstr*> block_worklist_;
   GrowableArray<Definition*> definition_worklist_;
 };
 
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_OPTIMIZER_H_