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| author | okaneco <47607823+okaneco@users.noreply.github.com> | 2024-09-26 19:39:14 -0400 |
|---|---|---|
| committer | okaneco <47607823+okaneco@users.noreply.github.com> | 2024-11-06 02:22:00 -0500 |
| commit | 1b5c02b7578879ebfcd54fdc6a4f86c49d2d9ecd (patch) | |
| tree | 773c8aa893974704989785a470d9f60a2326da8e /compiler/rustc_const_eval/src | |
| parent | d7d67ad14b7c69325a3377bea83b9919398f9588 (diff) | |
| download | rust-1b5c02b7578879ebfcd54fdc6a4f86c49d2d9ecd.tar.gz rust-1b5c02b7578879ebfcd54fdc6a4f86c49d2d9ecd.zip | |
Add `is_ascii` function optimized for x86-64 for [u8]
The new `is_ascii` function is optimized to use the `pmovmskb` vector instruction which tests the high bit in a lane. This corresponds to the same check of whether a byte is ASCII so ASCII validity checking can be vectorized. This instruction does not exist on other platforms so it is likely to regress performance and is gated to all(target_arch = "x86_64", target_feature = "sse2"). Add codegen test Remove crate::mem import for functions included in the prelude
Diffstat (limited to 'compiler/rustc_const_eval/src')
0 files changed, 0 insertions, 0 deletions