Enable allocation sinking for closures.

runtime/vm/intermediate_language_x64.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_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 4506 matching lines @@
   }
 }
 
 
 LocationSummary* AllocateObjectInstr::MakeLocationSummary() const {
   return MakeCallSummary();
 }
 
 
 void AllocateObjectInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  const Class& cls = Class::ZoneHandle(constructor().Owner());
-  const Code& stub = Code::Handle(StubCode::GetAllocationStubForClass(cls));
-  const ExternalLabel label(cls.ToCString(), stub.EntryPoint());
+  const Code& stub = Code::Handle(StubCode::GetAllocationStubForClass(cls()));
+  const ExternalLabel label(cls().ToCString(), stub.EntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(ArgumentCount());  // Discard arguments.
 }
 
 
 LocationSummary* CreateClosureInstr::MakeLocationSummary() const {
   return MakeCallSummary();
@@ skipping 11 matching lines @@
                          PcDescriptors::kOther,
                          locs());
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64