Save the native name on the function instead of finding it in the token stream for lazily-linked na…

runtime/vm/compiler.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/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/block_scheduler.h"
@@ skipping 1120 matching lines @@
 #endif
     return Error::null();
   } else {
     Thread* const thread = Thread::Current();
     Isolate* const isolate = thread->isolate();
     StackZone stack_zone(thread);
     Error& error = Error::Handle();
     // We got an error during compilation.
     error = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
-    ASSERT(!optimized);
+    // Unoptimized compilation or precompilation may encounter compile-time
+    // errors, but regular optimized compilation should not.
+    ASSERT(!optimized || Compiler::always_optimize());
     // Do not attempt to optimize functions that can cause errors.
     function.set_is_optimizable(false);
     return error.raw();
   }
   UNREACHABLE();
   return Error::null();
 }
 
 
 RawError* Compiler::CompileFunction(Thread* thread,
@@ skipping 676 matching lines @@
       isolate->set_background_compiler(task);
       start_task = true;
     }
   }
   if (start_task) {
     Dart::thread_pool()->Run(isolate->background_compiler());
   }
 }
 
 }  // namespace dart