Adds Simulator Longjmp and enables many tests for arm64.

runtime/vm/benchmark_test.cc

Index: runtime/vm/benchmark_test.cc
===================================================================
--- runtime/vm/benchmark_test.cc	(revision 35591)
+++ runtime/vm/benchmark_test.cc	(working copy)
@@ -54,7 +54,9 @@
   benchmark->set_score(elapsed_time);
 }
 
+#endif
 
+
 //
 // Measure creation of core isolate from a snapshot.
 //
@@ -89,6 +91,9 @@
 }
 
 
+// TODO(zra): Remove when tests are ready to enable.
+#if !defined(TARGET_ARCH_ARM64)
+
 //
 // Measure invocation of Dart API functions.
 //
@@ -192,7 +197,9 @@
   benchmark->set_score(elapsed_time);
 }
 
+#endif
 
+
 //
 // Measure time accessing internal and external strings.
 //
@@ -234,6 +241,9 @@
 }
 
 
+// TODO(zra): Remove when tests are ready to enable.
+#if !defined(TARGET_ARCH_ARM64)
+
 //
 // Measure compile of all dart2js(compiler) functions.
 //
@@ -315,7 +325,9 @@
   free(script);
 }
 
+#endif
 
+
 //
 // Measure frame lookup during stack traversal.
 //
@@ -581,6 +593,4 @@
   benchmark->set_score(elapsed_time);
 }
 
-#endif  // !defined(TARGET_ARCH_ARM64)
-
 }  // namespace dart