Revision: 23127
Author: ja...@chromium.org
Date: Thu Aug 14 11:31:42 2014 UTC
Log: Remove the flaky store buffer test for maps.
BUG=
R=bmeu...@chromium.org
Review URL: https://codereview.chromium.org/471953002
http://code.google.com/p/v8/source/detail?r=23127
Modified:
/branches/bleeding_edge/test/cctest/test-heap.cc
=======================================
--- /branches/bleeding_edge/test/cctest/test-heap.cc Thu Aug 14 07:41:33
2014 UTC
+++ /branches/bleeding_edge/test/cctest/test-heap.cc Thu Aug 14 11:31:42
2014 UTC
@@ -4473,51 +4473,6 @@
// when it calls heap->AdjustLiveBytes(...).
JSObject::MigrateToMap(o, map2);
}
-
-
-TEST(RegressStoreBufferMapUpdate) {
- CcTest::InitializeVM();
- v8::HandleScope scope(CcTest::isolate());
- Isolate* isolate = CcTest::i_isolate();
- Factory* factory = isolate->factory();
- Heap* heap = isolate->heap();
-
- // This test checks that we do not treat instance size field of the map
- // as a heap pointer when processing the store buffer.
-
- Handle<Map> map1 = Map::Create(isolate->object_function(), 1);
-
- // Allocate a throw-away object.
- factory->NewFixedArray(1, NOT_TENURED);
-
- // Allocate a new-space object that will be moved by the GC (because
- // the throw-away object will die).
- Handle<FixedArray> object_to_move = factory->NewFixedArray(1,
NOT_TENURED);
-
- // Record the address before the GC.
- Object* object_to_move_address = *object_to_move;
-
- // Smash the new space pointer to the moving object into the instance
size
- // field of the map. The idea is to trick the GC into updating this
pointer
- // when the object moves. This would be wrong because instance size
should
- // not be treated as a heap pointer.
- *(reinterpret_cast<Object**>(map1->address() +
Map::kInstanceSizeOffset)) =
- object_to_move_address;
-
- // Make sure we scan the map's page on scavenge.
- Page* page = Page::FromAddress(map1->address());
- page->set_scan_on_scavenge(true);
-
- heap->CollectGarbage(NEW_SPACE);
-
- // Check the object has really moved.
- CHECK(*object_to_move != object_to_move_address);
-
- // Now check that we have not updated the instance size field of the map.
- CHECK_EQ(object_to_move_address,
- *(reinterpret_cast<Object**>(map1->address() +
- Map::kInstanceSizeOffset)));
-}
#ifdef DEBUG
--
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