Andreas Kling 0ad4be3d78 LibJS: Skip redundant UTF-8 validation in rope string resolution ...

When resolving a rope, we've already taken care to resolve it to
a UTF-8 byte stream. There's no need to do a separate pass just for
validating the data again.

This was noticeable in some profiles. I made a simple microbenchmark
that gets a 30% speed-up:

    ("x" + "y".repeat(100_000_000)).trimStart()

2023-12-30 13:49:50 +01:00

11 KiB

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