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Caleb Zulawski 2021-10-07 17:43:53 -04:00 • committed by Jubilee
parent 765bee6362
commit 5b4282edcd
1 changed files with 8 additions and 10 deletions
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18
crates/core_simd/src/swizzle.rs
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@ -47,11 +47,11 @@ macro_rules! simd_swizzle {
} => {
{
use $crate::simd::Swizzle;
struct SwizzleImpl;
impl<const LANES: usize> Swizzle<LANES, {$index.len()}> for SwizzleImpl {
struct Impl;
impl<const LANES: usize> Swizzle<LANES, {$index.len()}> for Impl {
const INDEX: [usize; {$index.len()}] = $index;
}
SwizzleImpl::swizzle($vector)
Impl::swizzle($vector)
}
};
{
@ -59,11 +59,11 @@ macro_rules! simd_swizzle {
} => {
{
use $crate::simd::{Which, Swizzle2};
struct SwizzleImpl;
impl<const LANES: usize> Swizzle2<LANES, {$index.len()}> for SwizzleImpl {
struct Impl;
impl<const LANES: usize> Swizzle2<LANES, {$index.len()}> for Impl {
const INDEX: [Which; {$index.len()}] = $index;
}
SwizzleImpl::swizzle2($first, $second)
Impl::swizzle2($first, $second)
}
}
}
@ -118,6 +118,7 @@ pub trait Swizzle2<const INPUT_LANES: usize, const OUTPUT_LANES: usize> {
}
/// The `simd_shuffle` intrinsic expects `u32`, so do error checking and conversion here.
/// This trait hides `INDEX_IMPL` from the public API.
trait SwizzleImpl<const INPUT_LANES: usize, const OUTPUT_LANES: usize> {
const INDEX_IMPL: [u32; OUTPUT_LANES];
}
@ -142,6 +143,7 @@ where
}
/// The `simd_shuffle` intrinsic expects `u32`, so do error checking and conversion here.
/// This trait hides `INDEX_IMPL` from the public API.
trait Swizzle2Impl<const INPUT_LANES: usize, const OUTPUT_LANES: usize> {
const INDEX_IMPL: [u32; OUTPUT_LANES];
}
@ -258,8 +260,6 @@ where
/// The second result contains the last `LANES / 2` lanes from `self` and `other`,
/// alternating, starting with the lane `LANES / 2` from the start of `self`.
///
/// This particular permutation is efficient on many architectures.
///
/// ```
/// #![feature(portable_simd)]
/// # use core_simd::Simd;
@ -322,8 +322,6 @@ where
/// The second result takes every other lane of `self` and then `other`, starting with
/// the second lane.
///
/// This particular permutation is efficient on many architectures.
///
/// ```
/// #![feature(portable_simd)]
/// # use core_simd::Simd;