Tracking Issue for `x86_amx_intrinsics`

[sayantn]

This issue tracks the integration of Intel AMX instruction family to Rust.

The feature gate for the issue is #![feature(x86_amx_intrinsics)].

Steps

• Add the target-feature attributes and runtime detection for them
• Implement the associated intrinsics in stdarch
• Stabilization PR

Public API

The following target features and all their associated intrinsics and types

• amx-tile
• amx-int8
• amx-bf16
• amx-fp16
• amx-complex

Implementation History

• Add AMX target-features and x86_amx_intrinsics feature flag #126639
• Runtime detection for AMX target-features stdarch#1587
• initial commit to enable amx stdarch#1618

[rustbot]

Error: Label B-unstable can only be set by Rust team members

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[workingjubilee]

We will need to understand the ABI impacts of AMX, if any.