Sync portable-simd for bitmasks &c.#94452

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bors merged 15 commits intorust-lang:masterfrom

workingjubilee:sync-simd-bitmasks

Mar 1, 2022

Commits on Nov 28, 2021

Add spectral_norm example from packed_simd
deantvv
committed

Commits on Feb 2, 2022

Merge portable-simd#203 - deantvv/add-spectral-norm
workingjubilee
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Commits on Feb 3, 2022

Commits on Feb 8, 2022

Commits on Feb 9, 2022

Commits on Feb 10, 2022

Add some safety comments

calebzulawski
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workingjubilee
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rust-lang/portable-simd#245: Explain unsafe contracts of core::simd
workingjubilee
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Commits on Feb 25, 2022

Use bitmask trait

calebzulawski
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workingjubilee
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Manually implement for supported lanes

calebzulawski
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workingjubilee
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Make internal mask implementation safe

calebzulawski
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workingjubilee
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Commits on Feb 26, 2022

rust-lang/portable-simd#239: Bitmask conversion trait
workingjubilee
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Commits on Feb 28, 2022

Sync rust-lang/portable-simd@5f49d4c8435a25d804b2f375e949cb25479f5be9
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