Reviewers: Toon Verwaest,
Description:
Re-evaluate marking bits of a descriptor array when it gets replaced.
BUG=340254
Please review this at https://codereview.chromium.org/179733004/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+3, -0 lines):
M src/objects.cc
Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index
410292d336aa97362a462e308c6fd6100dd04e97..d2ad0b7f5e866db7b3abc6b6e7b8d601db2989cd
100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -2579,6 +2579,7 @@ void Map::DeprecateTarget(Name* key, DescriptorArray*
new_descriptors) {
DescriptorArray* to_replace = instance_descriptors();
Map* current = this;
+ GetHeap()->incremental_marking()->RecordWrites(to_replace);
while (current->instance_descriptors() == to_replace) {
current->SetEnumLength(kInvalidEnumCacheSentinel);
current->set_instance_descriptors(new_descriptors);
@@ -6814,6 +6815,8 @@ MaybeObject* Map::ShareDescriptor(DescriptorArray*
descriptors,
Map* map;
// Replace descriptors by new_descriptors in all maps that share it.
+
+ GetHeap()->incremental_marking()->RecordWrites(descriptors);
for (Object* current = GetBackPointer();
!current->IsUndefined();
current = map->GetBackPointer()) {
--
--
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