1//! Advanced Vector Extensions (AVX)
2//!
3//! The references are:
4//!
5//! - [Intel 64 and IA-32 Architectures Software Developer's Manual Volume 2:
6//! Instruction Set Reference, A-Z][intel64_ref]. - [AMD64 Architecture
7//! Programmer's Manual, Volume 3: General-Purpose and System
8//! Instructions][amd64_ref].
9//!
10//! [Wikipedia][wiki] provides a quick overview of the instructions available.
11//!
12//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
13//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
14//! [wiki]: https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
15
16use crate::{
17 core_arch::{simd_llvm::*, x86::*},
18 mem::transmute,
19};
20
21/// Copies `a` to result, and insert the 64-bit integer `i` into result
22/// at the location specified by `index`.
23///
24/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm256_insert_epi64)
25#[inline]
26#[rustc_legacy_const_generics(2)]
27#[target_feature(enable = "avx")]
28// This intrinsic has no corresponding instruction.
29#[stable(feature = "simd_x86", since = "1.27.0")]
30pub unsafe fn _mm256_insert_epi64<const INDEX: i32>(a: __m256i, i: i64) -> __m256i {
31 static_assert_uimm_bits!(INDEX, 2);
32 transmute(src:simd_insert(x:a.as_i64x4(), INDEX as u32, val:i))
33}
34
35#[cfg(test)]
36mod tests {
37 use stdarch_test::simd_test;
38
39 use crate::core_arch::x86::*;
40
41 #[simd_test(enable = "avx")]
42 unsafe fn test_mm256_insert_epi64() {
43 let a = _mm256_setr_epi64x(1, 2, 3, 4);
44 let r = _mm256_insert_epi64::<3>(a, 0);
45 let e = _mm256_setr_epi64x(1, 2, 3, 0);
46 assert_eq_m256i(r, e);
47 }
48}
49