Tracking Issue for AVX512 intrinsics (original) (raw)

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[Tracking Issue](/rust-lang/rust/issues?q=type:"Tracking Issue")

1 of 3 issues completed

#141964

Closed

Tracking Issue for AVX512 intrinsics

#111137

Tracking Issue

1 of 3 issues completed

#141964

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C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCF-stdarch_x86_avx512`#![feature(stdarch_x86_avx512)]`O-x86_32Target: x86 processors, 32 bit (like i686-*) (also known as IA-32, i386, i586, i686)O-x86_64Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64)T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.finished-final-comment-periodThe final comment period is finished for this PR / Issue.

Milestone

1.89.0

Description

Amanieu

opened

on May 3, 2023

Feature gate: #![feature(stdarch_x86_avx512)]

This is a tracking issue for the AVX-512 (and related extensions) intrinsics in core::arch.

Public API

This feature covers all of the intrinsics from the following features:

• avx512bf16
• avx512bitalg
• avx512bw
• avx512cd
• avx512f
• avx512ifma
• avx512vbmi
• avx512vbmi2
• avx512vnni
• avx512vpopcntdq
• gfni
• vaes
• vpclmulqdq

VEX variants

• avxifma
• avxneconvert
• avxvnni
• avxvnniint16
• avxvnniint8

Implementation History

• Split the stdsimd feature into separate features stdarch#1486
• Implicitly enable evex512 if avx512 is enabled #121088
• Stop using the avx512er and avx512pf x86 target features #125498
• Expand avx512_target_feature to include VEX variants #126617

Steps

• Final comment period (FCP)1
• Stabilization PR

Unresolved Questions and Other Concerns

• _mm512_reduce_add_ps and friends are setting fast-math flags they should not set stdarch#1533
• How will we handle AVX10?
• _mm512_shrdv_* intrinsics have incorrect argument order #130365
• We need i1xN support to call LLVM intrinsics for avx512vp2intersect.

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩

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C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCF-stdarch_x86_avx512`#![feature(stdarch_x86_avx512)]`O-x86_32Target: x86 processors, 32 bit (like i686-*) (also known as IA-32, i386, i586, i686)O-x86_64Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64)T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.finished-final-comment-periodThe final comment period is finished for this PR / Issue.

Type

[Tracking Issue](/rust-lang/rust/issues?q=type:"Tracking Issue")

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• 1.89.0

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