Adds Simulator Longjmp and enables many tests for arm64.

runtime/vm/heap_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/globals.h"
-#if !defined(TARGET_ARCH_ARM64)
 
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/globals.h"
 #include "vm/heap.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 TEST_CASE(OldGC) {
@@ skipping 27 matching lines @@
   EXPECT_VALID(result);
   EXPECT(!Dart_IsNull(result));
   EXPECT(Dart_IsList(result));
   Isolate* isolate = Isolate::Current();
   Heap* heap = isolate->heap();
   heap->CollectGarbage(Heap::kOld);
   Dart_ExitScope();
   heap->CollectGarbage(Heap::kOld);
 }
 
+
 class ClassHeapStatsTestHelper {
  public:
   static ClassHeapStats* GetHeapStatsForCid(ClassTable* class_table,
                                             intptr_t cid) {
     return class_table->StatsAt(cid);
   }
 
   static void DumpClassHeapStats(ClassHeapStats* stats) {
     printf("%" Pd " ", stats->recent.new_count);
     printf("%" Pd " ", stats->post_gc.new_count);
@@ skipping 138 matching lines @@
     }
   }
   {
     NoGCScope no_gc;
     FindNothing find_nothing;
     EXPECT(Object::null() == heap->FindObject(&find_nothing));
   }
 }
 
 }  // namespace dart.
-
-#endif  // !defined(TARGET_ARCH_ARM64)