VM: [Kernel] Ensure tear-offs of static methods are canonicalized

runtime/vm/kernel_to_il.cc

 // Copyright (c) 2016, 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 <map>
 #include <set>
 #include <string>
 
 #include "vm/kernel_to_il.h"
 
@@ skipping 4246 matching lines @@
     }
   } else {
     Procedure* procedure = Procedure::Cast(target);
     const Function& target = Function::ZoneHandle(
         Z, H.LookupStaticMethodByKernelProcedure(procedure));
 
     if (procedure->kind() == Procedure::kGetter) {
       fragment_ = StaticCall(node->position(), target, 0);
     } else if (procedure->kind() == Procedure::kMethod) {
       ASSERT(procedure->IsStatic());
-      Function& closure_function =
-          Function::ZoneHandle(Z, target.ImplicitClosureFunction());
-      closure_function.set_kernel_function(target.kernel_function());
-      const Instance& closure =
-          Instance::ZoneHandle(Z, closure_function.ImplicitStaticClosure());
-      fragment_ = Constant(closure);
+      fragment_ = Constant(constant_evaluator_.EvaluateExpression(node));
     } else {
       UNIMPLEMENTED();
     }
   }
 }
 
 
 void FlowGraphBuilder::VisitStaticSet(StaticSet* node) {
   Member* target = node->target();
   if (target->IsField()) {
@@ skipping 1568 matching lines @@
   instructions += LoadLocal(parsed_function_->current_context_var());
   instructions += StoreInstanceField(Closure::context_offset());
 
   return instructions;
 }
 
 
 }  // namespace kernel
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)