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perf(utf8): optimize wrap breaks #507

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Merged
kommander merged 2 commits into from
Jan 11, 2026
Merged

perf(utf8): optimize wrap breaks #507

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a002273
perf(utf8): optimize wrap breaks
simonklee Jan 9, 2026
8494af8
Merge branch 'main' into perf-utf8-simd-parallel
kommander Jan 11, 2026
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34 changes: 17 additions & 17 deletions packages/core/src/zig/utf8.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -204,29 +204,29 @@ pub fn findWrapBreaks(text: []const u8, result: *WrapBreakResult, width_method:
var match_mask: @Vector(vector_len, bool) = @splat(false);

// Check whitespace
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat(' ')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('\t')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat(' ')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('\t')));

// Check dashes and slashes
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('-')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('/')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('\\')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('-')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('/')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('\\')));

// Check punctuation
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('.')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat(',')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat(';')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat(':')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('!')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('?')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('.')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat(',')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat(';')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat(':')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('!')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('?')));

// Check brackets
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('(')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat(')')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('[')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat(']')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('{')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = @select(bool, chunk == @as(@Vector(vector_len, u8), @splat('}')), @as(@Vector(vector_len, bool), @splat(true)), match_mask);
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('(')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat(')')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('[')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat(']')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('{')));
match_mask = match_mask | (chunk == @as(@Vector(vector_len, u8), @splat('}')));

// Convert boolean mask to integer bitmask for faster iteration
var bitmask: u16 = 0;
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