Tracking Issue for _MM_SHUFFLE

[Amanieu]

Feature gate: #![feature(stdarch_x86_mm_shuffle)]

This is a tracking issue for the _MM_SHUFFLE function in core::arch::x86.

Public API

// core::arch::{x86, x86_64}

pub const fn _MM_SHUFFLE(z: u32, y: u32, x: u32, w: u32) -> i32 {
    ((z << 6) | (y << 4) | (x << 2) | w) as i32
}

Steps / History

• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• Concerns about the return type: _MM_SHUFFLE has incorrect return type stdarch#522

Footnotes

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

[Jules-Bertholet]

@rustbot label O-x86