Identified LayoutNG hotspots running an aarch64 build content_shell in an ARMv8 A72 (big core) processor in linux@64bits while loading a wikipedia page (https://en.wikipedia.org/wiki/C%2B%2B).

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Pasting from slack channel:
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A question: what NGPaintFragment::CreateOrReuse does?
Oddly enough, 52.94% of the time in there is spent performing loads followed next by 17.65% doing stores.
My *guess* is that would be the GetLayoutObject() followed by the std::move().
Is that a known hotspot?
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For HasStartEdge and HasEndEdge we might want to store that as bits on the item itself.