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Have cfgs as part of the input to impl_unsafe_marker_for_simd (#207)
... so that the macro can correctly expand with `doc(cfg(...))` attributes under `feature = "nightly_docs"`.
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zachs18
GitHub
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@ -79,10 +79,13 @@ macro_rules! transmute {
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/// with relevant cargo features enabled.
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#[allow(unused)]
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macro_rules! impl_unsafe_marker_for_simd {
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(unsafe impl $trait:ident for $platform:ident :: {}) => {};
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(unsafe impl $trait:ident for $platform:ident :: { $first_type:ident $(, $types:ident)* $(,)? }) => {
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($(#[cfg($cfg_predicate:meta)])? unsafe impl $trait:ident for $platform:ident :: {}) => {};
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($(#[cfg($cfg_predicate:meta)])? unsafe impl $trait:ident for $platform:ident :: { $first_type:ident $(, $types:ident)* $(,)? }) => {
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$( #[cfg($cfg_predicate)] )?
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$( #[cfg_attr(feature = "nightly_docs", doc(cfg($cfg_predicate)))] )?
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unsafe impl $trait for $platform::$first_type {}
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impl_unsafe_marker_for_simd!(unsafe impl $trait for $platform::{ $( $types ),* });
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$( #[cfg($cfg_predicate)] )? // To prevent recursion errors if nothing is going to be expanded anyway.
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impl_unsafe_marker_for_simd!($( #[cfg($cfg_predicate)] )? unsafe impl $trait for $platform::{ $( $types ),* });
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};
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}
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34
src/pod.rs
34
src/pod.rs
@ -54,13 +54,22 @@ unsafe impl Pod for f64 {}
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unsafe impl<T: Pod> Pod for Wrapping<T> {}
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#[cfg(feature = "unsound_ptr_pod_impl")]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "unsound_ptr_pod_impl")))]
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#[cfg_attr(
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feature = "nightly_docs",
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doc(cfg(feature = "unsound_ptr_pod_impl"))
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)]
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unsafe impl<T: 'static> Pod for *mut T {}
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#[cfg(feature = "unsound_ptr_pod_impl")]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "unsound_ptr_pod_impl")))]
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#[cfg_attr(
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feature = "nightly_docs",
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doc(cfg(feature = "unsound_ptr_pod_impl"))
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)]
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unsafe impl<T: 'static> Pod for *const T {}
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#[cfg(feature = "unsound_ptr_pod_impl")]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "unsound_ptr_pod_impl")))]
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#[cfg_attr(
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feature = "nightly_docs",
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doc(cfg(feature = "unsound_ptr_pod_impl"))
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)]
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unsafe impl<T: 'static> PodInOption for NonNull<T> {}
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unsafe impl<T: ?Sized + 'static> Pod for PhantomData<T> {}
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@ -80,13 +89,13 @@ impl_unsafe_marker_for_array!(
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512, 1024, 2048, 4096
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);
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#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
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unsafe impl Pod for wasm32::{v128}
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);
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#[cfg(all(target_arch = "aarch64", feature = "aarch64_simd"))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "aarch64", feature = "aarch64_simd"))]
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unsafe impl Pod for aarch64::{
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float32x2_t, float32x2x2_t, float32x2x3_t, float32x2x4_t, float32x4_t,
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float32x4x2_t, float32x4x3_t, float32x4x4_t, float64x1_t, float64x1x2_t,
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@ -111,16 +120,16 @@ impl_unsafe_marker_for_simd!(
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}
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);
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#[cfg(target_arch = "x86")]
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impl_unsafe_marker_for_simd!(
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#[cfg(target_arch = "x86")]
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unsafe impl Pod for x86::{
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__m128i, __m128, __m128d,
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__m256i, __m256, __m256d,
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}
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);
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#[cfg(target_arch = "x86_64")]
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impl_unsafe_marker_for_simd!(
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#[cfg(target_arch = "x86_64")]
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unsafe impl Pod for x86_64::{
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__m128i, __m128, __m128d,
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__m256i, __m256, __m256d,
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@ -128,7 +137,10 @@ impl_unsafe_marker_for_simd!(
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);
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#[cfg(feature = "nightly_portable_simd")]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "nightly_portable_simd")))]
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#[cfg_attr(
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feature = "nightly_docs",
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doc(cfg(feature = "nightly_portable_simd"))
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)]
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unsafe impl<T, const N: usize> Pod for core::simd::Simd<T, N>
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where
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T: core::simd::SimdElement + Pod,
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@ -136,18 +148,16 @@ where
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{
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}
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#[cfg(all(target_arch = "x86", feature = "nightly_stdsimd"))]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "nightly_stdsimd")))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "x86", feature = "nightly_stdsimd"))]
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unsafe impl Pod for x86::{
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__m128bh, __m256bh, __m512,
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__m512bh, __m512d, __m512i,
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}
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);
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#[cfg(all(target_arch = "x86_64", feature = "nightly_stdsimd"))]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "nightly_stdsimd")))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "x86_64", feature = "nightly_stdsimd"))]
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unsafe impl Pod for x86_64::{
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__m128bh, __m256bh, __m512,
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__m512bh, __m512d, __m512i,
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@ -19,8 +19,8 @@ use super::*;
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///
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/// * `MaybeUninit<T>` was not available in 1.34.0, but is available under the
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/// `zeroable_maybe_uninit` feature flag.
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/// * `Atomic*` types require Rust 1.60.0 or later to work on certain platforms, but is available
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/// under the `zeroable_atomics` feature flag.
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/// * `Atomic*` types require Rust 1.60.0 or later to work on certain platforms,
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/// but is available under the `zeroable_atomics` feature flag.
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/// * `[T; N]` for arbitrary `N` requires the `min_const_generics` feature flag.
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pub unsafe trait Zeroable: Sized {
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/// Calls [`zeroed`](core::mem::zeroed).
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@ -107,7 +107,10 @@ mod atomic_impls {
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}
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#[cfg(feature = "zeroable_maybe_uninit")]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "zeroable_maybe_uninit")))]
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#[cfg_attr(
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feature = "nightly_docs",
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doc(cfg(feature = "zeroable_maybe_uninit"))
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)]
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unsafe impl<T> Zeroable for core::mem::MaybeUninit<T> {}
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unsafe impl<A: Zeroable> Zeroable for (A,) {}
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@ -166,13 +169,13 @@ impl_unsafe_marker_for_array!(
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512, 1024, 2048, 4096
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);
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#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
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unsafe impl Zeroable for wasm32::{v128}
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);
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#[cfg(all(target_arch = "aarch64", feature = "aarch64_simd"))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "aarch64", feature = "aarch64_simd"))]
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unsafe impl Zeroable for aarch64::{
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float32x2_t, float32x2x2_t, float32x2x3_t, float32x2x4_t, float32x4_t,
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float32x4x2_t, float32x4x3_t, float32x4x4_t, float64x1_t, float64x1x2_t,
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@ -197,16 +200,16 @@ impl_unsafe_marker_for_simd!(
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}
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);
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#[cfg(target_arch = "x86")]
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impl_unsafe_marker_for_simd!(
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#[cfg(target_arch = "x86")]
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unsafe impl Zeroable for x86::{
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__m128i, __m128, __m128d,
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__m256i, __m256, __m256d,
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}
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);
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#[cfg(target_arch = "x86_64")]
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impl_unsafe_marker_for_simd!(
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#[cfg(target_arch = "x86_64")]
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unsafe impl Zeroable for x86_64::{
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__m128i, __m128, __m128d,
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__m256i, __m256, __m256d,
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@ -214,7 +217,10 @@ impl_unsafe_marker_for_simd!(
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);
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#[cfg(feature = "nightly_portable_simd")]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "nightly_portable_simd")))]
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#[cfg_attr(
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feature = "nightly_docs",
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doc(cfg(feature = "nightly_portable_simd"))
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)]
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unsafe impl<T, const N: usize> Zeroable for core::simd::Simd<T, N>
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where
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T: core::simd::SimdElement + Zeroable,
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@ -222,18 +228,16 @@ where
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{
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}
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#[cfg(all(target_arch = "x86", feature = "nightly_stdsimd"))]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "nightly_std_simd")))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "x86", feature = "nightly_stdsimd"))]
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unsafe impl Zeroable for x86::{
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__m128bh, __m256bh, __m512,
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__m512bh, __m512d, __m512i,
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}
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);
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#[cfg(all(target_arch = "x86_64", feature = "nightly_stdsimd"))]
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#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "nightly_std_simd")))]
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impl_unsafe_marker_for_simd!(
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#[cfg(all(target_arch = "x86_64", feature = "nightly_stdsimd"))]
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unsafe impl Zeroable for x86_64::{
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__m128bh, __m256bh, __m512,
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__m512bh, __m512d, __m512i,
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