Fix code invalidation of functions with references to deferred libraries

runtime/vm/code_generator.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/code_generator.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/bigint_operations.h"
 #include "vm/code_patcher.h"
@@ skipping 1256 matching lines @@
   }
   ASSERT(frame->IsDartFrame());
   const Code& caller_code = Code::Handle(frame->LookupDartCode());
   ASSERT(caller_code.is_optimized());
   const Function& target_function = Function::Handle(
       caller_code.GetStaticCallTargetFunctionAt(frame->pc()));
   const Code& target_code = Code::Handle(
       caller_code.GetStaticCallTargetCodeAt(frame->pc()));
   ASSERT(!target_code.IsNull());
   if (!target_function.HasCode()) {
-    // If target code was unoptimized than the code must have been kept
-    // connected to the function.
-    ASSERT(target_code.is_optimized());
     const Error& error =
         Error::Handle(Compiler::CompileFunction(target_function));
     if (!error.IsNull()) {
       Exceptions::PropagateError(error);
     }
   }
   ASSERT(target_function.HasCode());
   ASSERT(target_function.raw() == target_code.function());
 
   const Code& current_target_code = Code::Handle(target_function.CurrentCode());
@@ skipping 242 matching lines @@
 // of the given value.
 //   Arg0: Field object;
 //   Arg1: Value that is being stored.
 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) {
   const Field& field = Field::CheckedHandle(arguments.ArgAt(0));
   const Object& value = Object::Handle(arguments.ArgAt(1));
   field.UpdateGuardedCidAndLength(value);
 }
 
 }  // namespace dart