Propagate this-specialization to regular (megamorphic) calls

runtime/vm/aot_optimizer.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/aot_optimizer.h"
 
 #include "vm/bit_vector.h"
 #include "vm/branch_optimizer.h"
 #include "vm/cha.h"
 #include "vm/compiler.h"
@@ skipping 269 matching lines @@
         }
         return true;
       }
     }
   }
 
   return false;
 }
 
 
 const ICData& AotOptimizer::TrySpecializeICData(const ICData& ic_data,

[Vyacheslav Egorov (Google), 2017/02/23 15:32:37]

I think this code is dead you can delete it.

                                                 intptr_t cid) {
   ASSERT(ic_data.NumArgsTested() == 1);
 
   if ((ic_data.NumberOfUsedChecks() == 1) && ic_data.HasReceiverClassId(cid)) {
     return ic_data;  // Nothing to do
   }
 
+  intptr_t count = 1;
   const Function& function =
-      Function::Handle(Z, ic_data.GetTargetForReceiverClassId(cid));
+      Function::Handle(Z, ic_data.GetTargetForReceiverClassId(cid, &count));
   // TODO(fschneider): Try looking up the function on the class if it is
   // not found in the ICData.
   if (!function.IsNull()) {
     const ICData& new_ic_data = ICData::ZoneHandle(
         Z, ICData::New(Function::Handle(Z, ic_data.Owner()),
                        String::Handle(Z, ic_data.target_name()),
                        Object::empty_array(),  // Dummy argument descriptor.
                        ic_data.deopt_id(), ic_data.NumArgsTested(), false));
     new_ic_data.SetDeoptReasons(ic_data.DeoptReasons());
     new_ic_data.AddReceiverCheck(cid, function);
@@ skipping 1866 matching lines @@
                                   FlowGraph::kEffect);
         current_iterator()->RemoveCurrentFromGraph();
       }
     }
   }
 }
 
 #endif  // DART_PRECOMPILER
 
 }  // namespace dart