Enable remaining execution tests on x64.

runtime/vm/exceptions_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 "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
-#if defined(TARGET_ARCH_IA32)  // only ia32 can run exception tests.
+// Only ia32 and x64 can run execution tests.
+#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
 #define FUNCTION_NAME(name) UnhandledExcp_##name
 #define REGISTER_FUNCTION(name, count)                                         \
   { ""#name, FUNCTION_NAME(name), count },
 
 
 void FUNCTION_NAME(Unhandled_equals)(Dart_NativeArguments args) {
   NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args);
   const Instance& expected = Instance::CheckedHandle(arguments->At(0));
   const Instance& actual = Instance::CheckedHandle(arguments->At(1));
   if (!expected.Equals(actual)) {
@@ skipping 103 matching lines @@
       "}";
   Dart_Handle lib = TestCase::LoadTestScript(
       kScriptChars,
       reinterpret_cast<Dart_NativeEntryResolver>(native_lookup));
   Dart_InvokeStatic(lib,
                     Dart_NewString("UnhandledExceptionTest"),
                     Dart_NewString("testMain"),
                     0,
                     NULL);
 }
-#endif  // TARGET_ARCH_IA32.
+#endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart