Charlie Marsh b845e81c4a Use `memchr` for computing line indexes (#21838) ... ## Summary Some benchmarks with Claude's help: | File | Size | Baseline | Optimized | Speedup | |---------------------|-------|----------------------|----------------------|---------| | numpy/globals.py | 3 KB | 1.48 µs (1.95 GiB/s) | 740 ns (3.89 GiB/s) | 2.0x | | unicode/pypinyin.py | 4 KB | 2.04 µs (2.01 GiB/s) | 1.18 µs (3.49 GiB/s) | 1.7x | | pydantic/types.py | 26 KB | 13.1 µs (1.90 GiB/s) | 5.88 µs (4.23 GiB/s) | 2.2x | | numpy/ctypeslib.py | 17 KB | 8.45 µs (1.92 GiB/s) | 3.94 µs (4.13 GiB/s) | 2.1x | | large/dataset.py | 41 KB | 21.6 µs (1.84 GiB/s) | 11.2 µs (3.55 GiB/s) | 1.9x | I think that I originally thought we _had_ to iterate character-by-character here because we needed to do the ASCII check, but the ASCII check can be vectorized by LLVM (and the "search for newlines" can be done with `memchr`).		2025-12-08 08:50:51 -05:00
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src	Use `memchr` for computing line indexes (#21838)	2025-12-08 08:50:51 -05:00
Cargo.toml	Fix rust feature activation (#20012)	2025-08-21 09:26:06 +02:00