VM: Implement closure calls as instance calls.

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 2142 matching lines @@
 
 
 bool PolymorphicInstanceCallInstr::HasSingleRecognizedTarget() const {
   return ic_data().HasOneTarget() &&
       (MethodRecognizer::RecognizeKind(
           Function::Handle(ic_data().GetTargetAt(0))) !=
        MethodRecognizer::kUnknown);
 }
 
 
+bool PolymorphicInstanceCallInstr::HasSingleDispatcherTarget() const {
+  if (!ic_data().HasOneTarget()) return false;
+  const Function& target = Function::Handle(ic_data().GetTargetAt(0));
+  return target.IsNoSuchMethodDispatcher() || target.IsInvokeFieldDispatcher();
+}
+
+
 LocationSummary* StaticCallInstr::MakeLocationSummary(bool optimizing) const {
   return MakeCallSummary();
 }
 
 
 void StaticCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   if (!compiler->is_optimizing()) {
     // Some static calls can be optimized by the optimizing compiler (e.g. sqrt)
     // and therefore need a deoptimization descriptor.
     compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
@@ skipping 1071 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart