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Unified Diff: src/objects.cc

Issue 10559032: Implementing weak referencing elements transition maps. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 6 months ago
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Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index c0f102fb123e2093fe96f4a8d4a587b54b3c78c0..3b2db221f8e54e81282e7c4702ebde882b46d8cb 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -7353,6 +7353,11 @@ void Map::ClearNonLiveTransitions(Heap* heap) {
DescriptorArray* d = DescriptorArray::cast(
*RawField(this, Map::kInstanceDescriptorsOrBitField3Offset));
if (d->IsEmpty()) return;
+ Map* elements_transition = d->elements_transition_map();
+ if (elements_transition != NULL &&
+ ClearBackPointer(heap, elements_transition)) {
+ d->ClearElementsTransition();
+ }
Smi* NullDescriptorDetails =
PropertyDetails(NONE, NULL_DESCRIPTOR).AsSmi();
for (int i = 0; i < d->number_of_descriptors(); ++i) {
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