Represent tokens as a compressed stream instead of an array.

vm/benchmark_test.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/benchmark_test.h"
 
 #include "bin/file.h"
 
 #include "platform/assert.h"
 
@@ skipping 155 matching lines @@
       kScriptChars,
       reinterpret_cast<Dart_NativeEntryResolver>(bm_uda_lookup));
 
   // Create a native wrapper class with native fields.
   Dart_Handle result = Dart_CreateNativeWrapperClass(
       lib,
       Dart_NewString("NativeFieldsWrapper"),
       1);
   EXPECT(!Dart_IsError(result));
 
+  Dart_Handle args[1];
+  args[0] = Dart_NewInteger(kNumIterations);
+
+  // Warmup first to avoid compilation jitters.
+  Dart_Invoke(lib,
+              Dart_NewString("benchmark"),
+              1,
+              args);
+
   Timer timer(true, "UseDartApi benchmark");
   timer.Start();
-  Dart_Handle args[1];
-  args[0] = Dart_NewInteger(kNumIterations);
   Dart_Invoke(lib,
               Dart_NewString("benchmark"),
               1,
               args);
   timer.Stop();
   int64_t elapsed_time = timer.TotalElapsedTime();
   benchmark->set_score(elapsed_time);
 }
 
 
@@ skipping 146 matching lines @@
       reinterpret_cast<Dart_NativeEntryResolver>(StackFrameNativeResolver));
   Dart_Handle cls = Dart_GetClass(lib, Dart_NewString("StackFrameTest"));
   Dart_Handle result = Dart_Invoke(cls, Dart_NewString("testMain"), 0, NULL);
   EXPECT_VALID(result);
   int64_t elapsed_time = 0;
   EXPECT(!Dart_IsError(Dart_IntegerToInt64(result, &elapsed_time)));
   benchmark->set_score(elapsed_time);
 }
 
 }  // namespace dart