scriptc

mirror of https://github.com/vercel-labs/scriptc.git synced 2026-10-25 06:24:27 +08:00

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T

Malte Ubl af2521f688 Copy short strings inline and drop index entries of proven-ASCII strings

String construction copied every span with a libc memcpy call, and
scr_str_new scanned the copied bytes for ASCII in a second pass. Spans of
at most 16 bytes (identifiers, map keys, number text) now move as two
overlapping fixed-size words, and scr_str_new tests those same words for
ASCII, so the fact is free for short strings; longer spans keep the bulk
copy and a chunked scan that stops at the first non-ASCII byte.

A scan that proves a heap string ASCII now also drops its index-cache
entry: a proven-ASCII string never owns one, because every UTF-16 mapper
answers it by identity and re-checks the header bit after extending an
index. Releasing such a string therefore skips the cache purge, and a
large text proven ASCII once (a JSON document's length, a source file)
no longer keeps every later string release walking the cache. Immortal
strings cannot record the bit and keep their entries as before.

2026-10-09 10:10:22 -07:00

corpus

Copy short strings inline and drop index entries of proven-ASCII strings

2026-10-09 10:10:22 -07:00

coverage-fixtures

Make compile blockers and Node differences actionable (#786 )

2026-10-09 10:30:31 -05:00

deadstrip

init

2026-07-22 18:08:04 -05:00

diagnostics

Track optional values precisely through callbacks, captures and pops (#784 )