Change == into an instance call to allow polymorphic inlining of ==.

runtime/vm/flow_graph_compiler.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/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/cha.h"
 #include "vm/dart_entry.h"
@@ skipping 110 matching lines @@
       for (ForwardInstructionIterator it(entry); !it.Done(); it.Advance()) {
         Instruction* current = it.Current();
         if (current->IsBranch()) {
           current = current->AsBranch()->comparison();
         }
         // In optimized code, ICData is always set in the instructions.
         const ICData* ic_data = NULL;
         if (current->IsInstanceCall()) {
           ic_data = current->AsInstanceCall()->ic_data();
           ASSERT(ic_data != NULL);
-        } else if (current->IsEqualityCompare()) {
-          ic_data = current->AsEqualityCompare()->ic_data();
-          ASSERT(ic_data != NULL);
         }
         if ((ic_data != NULL) && (ic_data->NumberOfChecks() == 0)) {
           may_reoptimize_ = true;
         }
         if (is_leaf && !current->IsCheckStackOverflow()) {
           // Note that we do not care if the code contains instructions that
           // can deoptimize.
           LocationSummary* locs = current->locs();
           if ((locs != NULL) && locs->can_call()) {
             is_leaf = false;
@@ skipping 1061 matching lines @@
 
   for (int i = 0; i < len; i++) {
     sorted->Add(CidTarget(ic_data.GetReceiverClassIdAt(i),
                           &Function::ZoneHandle(ic_data.GetTargetAt(i)),
                           ic_data.GetCountAt(i)));
   }
   sorted->Sort(HighestCountFirst);
 }
 
 }  // namespace dart