Uses an object pool on x64

runtime/vm/find_code_object_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 "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/object.h"
 #include "vm/pages.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 TEST_CASE(FindCodeObject) {
-#if defined(TARGET_ARCH_IA32)
+#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
   const int kLoopCount = 50000;
 #else
   const int kLoopCount = 25000;
 #endif
   const int kScriptSize = 512 * KB;
   const int kNumFunctions = 1024;
   char scriptChars[kScriptSize];
   String& url = String::Handle(String::New("dart-test:FindCodeObject"));
   String& source = String::Handle();
   Script& script = Script::Handle();
@@ skipping 126 matching lines @@
 #else
   EXPECT(code.Size() > PageSpace::kPageSize);
   EXPECT(Code::LookupCode(pc) == code.raw());
   EXPECT(code.Size() > (1 * MB));
   pc = code.EntryPoint() + (1 * MB);
   EXPECT(Code::LookupCode(pc) == code.raw());
 #endif  // defined(TARGET_ARCH_MIPS)
 }
 
 }  // namespace dart