Use unary class checks when emitting instance calls in optimized mode.

runtime/vm/intermediate_language.cc

 // 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.
 
 #include "vm/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 1830 matching lines @@
 
 
 LocationSummary* InstanceCallInstr::MakeLocationSummary() const {
   return MakeCallSummary();
 }
 
 
 void InstanceCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   if (compiler->is_optimizing()) {
     if (HasICData() && (ic_data()->NumberOfChecks() > 0)) {
+      const ICData& unary_ic_data =
+          ICData::ZoneHandle(ic_data()->AsUnaryClassChecks());
       compiler->GenerateInstanceCall(deopt_id(),
                                      token_pos(),
                                      ArgumentCount(),
                                      argument_names(),
                                      locs(),
-                                     *ic_data());
+                                     unary_ic_data);
     } else {
       Label* deopt =
           compiler->AddDeoptStub(deopt_id(), kDeoptInstanceCallNoICData);
       __ jmp(deopt);
     }
   } else {
     ASSERT(!HasICData());
     compiler->AddCurrentDescriptor(PcDescriptors::kDeoptBefore,
                                    deopt_id(),
                                    token_pos());
@@ skipping 728 matching lines @@
   } while (CanonicalizeMaxBoundary(&max) || CanonicalizeMinBoundary(&length));
 
   // Failed to prove that maximum is bounded with array length.
   return false;
 }
 
 
 #undef __
 
 }  // namespace dart