PR #88342 Improve UTF16 vectorization

Improve UTF16 vectorization #88342

Catfish-Man merged 11 commits into main from asciivec-3

Catfish-Man assigned

Catfish-Man 81 days ago

Catfish-Man force pushed from 0ef3ee0e to 0f002ed6 52 days ago

Avoid more places where SIMD operations fail to inline

06cc5965

Optimize transcoding further, particularly for non-ASCII

a8abec2d

Add a guess-and-check optimization to allow partial vectorization of …

0b126d69

Vectorize UTF8->UTF16 copying some too

ea7aa6c4

Add a benchmark to exercise the guess-and-check optimization

71ca5d54

Add a test for the guess-and-check optimization

42f02011

Catfish-Man force pushed from e1ca1034 to 42f02011 5 days ago

Whoops, this branch doesn't need to use the new codepath

59beb7d1

Use intrinsics to improve codegen

a26b3165

Intrinsicify surrogate detection as well

5e63e1c1

Catfish-Man commented on 2026-06-24

Loop the guess-and-check fast path until the prefix is too small for …

ee836f38

Catfish-Man marked this pull request as ready for review 4 days ago

Catfish-Man requested a review 4 days ago

Catfish-Man requested a review from

eeckstein 4 days ago

Catfish-Man changed the title ~~Expand vectorized UTF16 transcoding to non-ASCII BMP code points~~ Improve UTF16 vectorization 4 days ago

Catfish-Man requested a review from

stephentyrone 4 days ago

jrflat approved these changes on 2026-06-25

Review comments

9f134a81

Catfish-Man enabled auto-merge (squash) 2 days ago

Catfish-Man merged 569e3676 into main 2 days ago

Catfish-Man deleted the asciivec-3 branch 2 days ago

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jrflat

eeckstein

stephentyrone

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swift Improve UTF16 vectorization #88342 Merged

Improve UTF16 vectorization #88342

swift
Improve UTF16 vectorization
#88342

Merged