Reviewers: ulan,
Message:
Committed patchset #1 manually as r18983 (tree was closed).
Description:
Don't unmark dictionary mode maps as unstable.
[email protected]
BUG=
Committed: https://code.google.com/p/v8/source/detail?r=18983
Please review this at https://codereview.chromium.org/148493007/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+6, -3 lines):
M src/objects-inl.h
M src/objects.cc
Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index
1ea9441b7e5b3507f37075f87f862fdb53639d32..9ac2d6b7f48a60bb2382dd94d0e11deadea85878
100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -3988,8 +3988,9 @@ bool Map::is_shared() {
void Map::set_dictionary_map(bool value) {
- if (value) mark_unstable();
- set_bit_field3(DictionaryMap::update(bit_field3(), value));
+ uint32_t new_bit_field3 = DictionaryMap::update(bit_field3(), value);
+ new_bit_field3 = IsUnstable::update(new_bit_field3, value);
+ set_bit_field3(new_bit_field3);
}
Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index
fe791f308738b326c9d2dfd2ca56a0fa7fdf7a9d..246557bdfc044b05604cd19313b6025f1d8ea724
100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -6682,7 +6682,9 @@ MaybeObject* Map::RawCopy(int instance_size) {
new_bit_field3 = EnumLengthBits::update(new_bit_field3,
kInvalidEnumCacheSentinel);
new_bit_field3 = Deprecated::update(new_bit_field3, false);
- new_bit_field3 = IsUnstable::update(new_bit_field3, false);
+ if (!is_dictionary_map()) {
+ new_bit_field3 = IsUnstable::update(new_bit_field3, false);
+ }
result->set_bit_field3(new_bit_field3);
return result;
}
--
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