Andreas Kling 27a83f7e5e LibJS: Make array-like Get access on ordinary objects much faster ...

This patch adds a fast path to the GetByValue bytecode op that bypasses
a ton of things *if* a set of assumptions hold:

- The property key must be a non-negative Int32
- The base object must not interfere with indexed property access
- The property key must already be present as an own property
- The existing value must not have any accessors defined

If this holds (which it should in the common case), we can poke directly
at the indexed property storage and save a boatload of time.

10% speed-up on the entire Kraken benchmark :^)
(including: 31% speed-up on Kraken/audio-dft.js)
(including: 23% speed-up on Kraken/stanford-crypto-aes.js)

2023-10-05 16:57:45 +02:00

99 KiB

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