RustCrypto / RustCrypto/utils

cpufeatures: additional AVX-512 features

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#865 1 comment 0 reactions 0 assignees View on GitHub

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Dominant language
Rust
Stars
674
Forks
170
Avg merge
1d 12h
Merged PRs (30d)
10

Description

#862 added initial support for AVX-512, however the following features are still unsupported:

  • avx512vbmi
  • avx512vbmi2
  • avx512vpopcntdq
  • avx512vnni
  • avx512bitalg
  • avx512bf16
  • avx512vp2intersect

These use different CPUID registers than the others (e.g. ecx)

Edit: updated after #1035

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the cpufeatures AVX-512 support added in #862 and the feature list in this issue. Trace how existing AVX-512 capabilities are detected, then account for the listed features using their relevant CPUID registers. Done means the unchecked features are supported consistently with the already checked entries.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
operating-systems
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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