Andreas Kling 1745e503aa LibJS: Use a HashTable to identify potential cell pointers in GC scan ...

Previously we would iterate over all the live HeapBlocks in order to
learn if an arbitrary pointer-sized value was a pointer into a live
HeapBlock. This was quite time-consuming.

Instead of that, just put all the live HeapBlock*'s in a HashTable
and identify pointers by doing a bit-masked lookup into the table.

2020-11-10 20:28:53 +01:00

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