diff options
Diffstat (limited to 'library/portable-simd/crates/core_simd/src/vector/ptr.rs')
-rw-r--r-- | library/portable-simd/crates/core_simd/src/vector/ptr.rs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/library/portable-simd/crates/core_simd/src/vector/ptr.rs b/library/portable-simd/crates/core_simd/src/vector/ptr.rs new file mode 100644 index 000000000..fa756344d --- /dev/null +++ b/library/portable-simd/crates/core_simd/src/vector/ptr.rs @@ -0,0 +1,51 @@ +//! Private implementation details of public gather/scatter APIs. +use crate::simd::intrinsics; +use crate::simd::{LaneCount, Simd, SupportedLaneCount}; + +/// A vector of *const T. +#[derive(Debug, Copy, Clone)] +#[repr(simd)] +pub(crate) struct SimdConstPtr<T, const LANES: usize>([*const T; LANES]); + +impl<T, const LANES: usize> SimdConstPtr<T, LANES> +where + LaneCount<LANES>: SupportedLaneCount, + T: Sized, +{ + #[inline] + #[must_use] + pub fn splat(ptr: *const T) -> Self { + Self([ptr; LANES]) + } + + #[inline] + #[must_use] + pub fn wrapping_add(self, addend: Simd<usize, LANES>) -> Self { + // Safety: this intrinsic doesn't have a precondition + unsafe { intrinsics::simd_arith_offset(self, addend) } + } +} + +/// A vector of *mut T. Be very careful around potential aliasing. +#[derive(Debug, Copy, Clone)] +#[repr(simd)] +pub(crate) struct SimdMutPtr<T, const LANES: usize>([*mut T; LANES]); + +impl<T, const LANES: usize> SimdMutPtr<T, LANES> +where + LaneCount<LANES>: SupportedLaneCount, + T: Sized, +{ + #[inline] + #[must_use] + pub fn splat(ptr: *mut T) -> Self { + Self([ptr; LANES]) + } + + #[inline] + #[must_use] + pub fn wrapping_add(self, addend: Simd<usize, LANES>) -> Self { + // Safety: this intrinsic doesn't have a precondition + unsafe { intrinsics::simd_arith_offset(self, addend) } + } +} |