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Bug 772690: Speed up nsDisplayList::SortByZOrder by removing (unnecessary) secondary sort by content order. r=dbaron

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This commit is contained in:
Robert O'Callahan 2012-07-23 08:20:11 -07:00
parent 9cdc2c7c8d
commit 369d480019
1 changed files with 1 additions and 3 deletions
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4
layout/base/nsDisplayList.cpp
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@ -859,9 +859,7 @@ static bool IsZOrderLEQ(nsDisplayItem* aItem1, nsDisplayItem* aItem2,
// z-indices here, because that might overflow a 32-bit int.
PRInt32 index1 = nsLayoutUtils::GetZIndex(aItem1->GetUnderlyingFrame());
PRInt32 index2 = nsLayoutUtils::GetZIndex(aItem2->GetUnderlyingFrame());
if (index1 == index2)
return IsContentLEQ(aItem1, aItem2, aClosure);
return index1 < index2;
return index1 <= index2;
}
void nsDisplayList::ExplodeAnonymousChildLists(nsDisplayListBuilder* aBuilder) {