okaneco 1b5c02b757 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		2024-11-06 02:22:00 -05:00
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is_ascii.rs	Add is_ascii function optimized for x86-64 for [u8]	2024-11-06 02:22:00 -05:00