Function core::arch::x86_64::_mm256_shuffle_epi32

pub unsafe fn _mm256_shuffle_epi32<const MASK: i32>(a: __m256i) -> __m256i

This is supported on x86-64 and target feature avx2 only.

使用 imm8 中的控件，在 a 的 128 位通道中打乱 32 位整数。

#[cfg(target_arch = "x86")]
use std::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;

let a = _mm256_setr_epi32(0, 1, 2, 3, 4, 5, 6, 7);

let c1 = _mm256_shuffle_epi32(a, 0b00_11_10_01);
let c2 = _mm256_shuffle_epi32(a, 0b01_00_10_11);

let expected1 = _mm256_setr_epi32(1, 2, 3, 0, 5, 6, 7, 4);
let expected2 = _mm256_setr_epi32(3, 2, 0, 1, 7, 6, 4, 5);

assert_eq!(_mm256_movemask_epi8(_mm256_cmpeq_epi8(c1, expected1)), !0);
assert_eq!(_mm256_movemask_epi8(_mm256_cmpeq_epi8(c2, expected2)), !0);

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