Propagate this-specialization to regular (megamorphic) calls

runtime/vm/flow_graph_inliner.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.
 #if !defined(DART_PRECOMPILED_RUNTIME)
 #include "vm/flow_graph_inliner.h"
 
 #include "vm/aot_optimizer.h"
 #include "vm/precompiler.h"
 #include "vm/block_scheduler.h"
 #include "vm/branch_optimizer.h"
@@ skipping 904 matching lines @@
             FlowGraphTypePropagator::Propagate(callee_graph);
             DEBUG_ASSERT(callee_graph->VerifyUseLists());
 
             optimizer.ApplyICData();
             DEBUG_ASSERT(callee_graph->VerifyUseLists());
 
             // Optimize (a << b) & c patterns, merge instructions. Must occur
             // before 'SelectRepresentations' which inserts conversion nodes.
             callee_graph->TryOptimizePatterns();
             DEBUG_ASSERT(callee_graph->VerifyUseLists());
+
+            callee_graph->Canonicalize();
           }
         }
 
         if (FLAG_support_il_printer && trace_inlining() &&
             (FLAG_print_flow_graph || FLAG_print_flow_graph_optimized)) {
           THR_Print("Callee graph for inlining %s\n",
                     function.ToFullyQualifiedCString());
           FlowGraphPrinter printer(*callee_graph);
           printer.PrintBlocks();
         }
@@ skipping 2720 matching lines @@
     }
 
     default:
       return false;
   }
 }
 
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)