Add 64-bit integer vectors and operations on them#253

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Shnatsel wants to merge 74 commits into

linebender:mainfrom

Shnatsel:64-bit-ints

Commits on May 24, 2026

Initial AVX-512 support. Adds level detection, mask operations, and dedicated AVX-512 implementations for complex int/float vector operations that benefit the most.
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Add checked_transmute_copy and ban transmute_copy to statically prevent the spooky bug I almost introduced
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Expand native type conversion test coverage
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Rename test: mask_methods.rs -> mask_roundtrip.rs
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Check in the new generated AVX-512 file
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Fix build after file rename
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Use AVX-512 instructions for f32 -> u32 conversions. Expand test coverage for these ops.
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Optimize load_array/as_array on AVX-512 masks; the initial impl was scalar, now we use the dedicated intrinsics.
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Split set_mask into a backend method so it could be specialized per backend, and specialize it for AVX-512. Add test coverage that sets every single bit and verifies it was set correctly.
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Optimize load_interleaved/store_interleaved for AVX-512. Add one more test to exercise it.
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Optimize variable shifts for 8-bit and 16-bit types. Expand test coverage. Only for 8-bit left shift LLVM autovectorizes the scalar fallback into GFNI instructions on 256-bit halves which emits mor…
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Optimize floor/ceil/round_ties_even/trunc/approximate_recip for 512-bit vectors on AVX-512; expand test coverage
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Use AVX-512 rcp14 for smaller vector sizes too; improves precision at no cost to throughput
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Optimize slide_within_blocks for AVX-512; verified with exhaustive slide test
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Remove stale tests for mask slide APIs; they were under #[cfg(false)] so they didn't show up earlier when I removed those methods.
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consistent clippy error messages
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satisfy Clippy
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get rid of useless extra braces
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KISS the native type mask roundtrip tests
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cargo fmt
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Satisfy clippy some more. Hoisted by my own restriction lint.
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Satisfy the toml formatting check
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Stick an #[expect] onto checked_transmute_copy on wasm32, otherwise we get dead code warnings
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Suppress an apparently buggy Clippy lint; surfaced only in `cargo clippy --tests` without a reported location, I've failed to isolate it to a specific crate and suppress it there
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Satisfy the toml formatter again
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Add miri out-outs for extra slow tests
Shnatsel
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Commits on May 26, 2026

Commits on May 27, 2026

Commits on Jun 17, 2026

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Commits on Jun 21, 2026

Commits on Jun 23, 2026