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arm Neon vector backend #19

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arm Neon vector backend #19

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073ac6c
Added ARM neon backend support
Oct 27, 2022
db30d66
Updated arm neon intrinsics for better speed-up
Oct 31, 2022
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4 changes: 2 additions & 2 deletions src/backend/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -48,15 +48,15 @@ pub mod serial;
#[cfg(any(
all(
feature = "simd_backend",
any(target_feature = "avx2", target_feature = "avx512ifma")
any(target_feature = "avx2", target_feature = "avx512ifma", target_feature = "neon")
),
all(feature = "nightly", rustdoc)
))]
#[cfg_attr(
feature = "nightly",
doc(cfg(any(all(
feature = "simd_backend",
any(target_feature = "avx2", target_feature = "avx512ifma")
any(target_feature = "avx2", target_feature = "avx512ifma", target_feature = "neon")
))))
)]
pub mod vector;
2 changes: 1 addition & 1 deletion src/backend/serial/mod.rs
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Expand Up @@ -38,6 +38,6 @@ pub mod curve_models;

#[cfg(not(all(
feature = "simd_backend",
any(target_feature = "avx2", target_feature = "avx512ifma")
any(target_feature = "avx2", target_feature = "avx512ifma", target_feature = "neon")
)))]
pub mod scalar_mul;
12 changes: 10 additions & 2 deletions src/backend/vector/mod.rs
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Expand Up @@ -11,8 +11,8 @@
// Conditionally include the notes if we're on nightly (so we can include docs at all).
#![doc = include_str!("../../../docs/parallel-formulas.md")]

#[cfg(not(any(target_feature = "avx2", target_feature = "avx512ifma", rustdoc)))]
compile_error!("simd_backend selected without target_feature=+avx2 or +avx512ifma");
#[cfg(not(any(target_feature = "avx2", target_feature = "avx512ifma", target_feature = "neon", rustdoc)))]
compile_error!("simd_backend selected without target_feature=+avx2 or +avx512ifma or +neon");

#[cfg(any(
all(target_feature = "avx2", not(target_feature = "avx512ifma")),
Expand All @@ -36,4 +36,12 @@ pub(crate) use self::ifma::{
constants::BASEPOINT_ODD_LOOKUP_TABLE, edwards::CachedPoint, edwards::ExtendedPoint,
};

#[cfg(any(target_feature = "neon", rustdoc))]
#[doc(cfg(target_feature = "neon"))]
pub mod neon;
#[cfg(target_feature = "neon")]
pub(crate) use self::neon::{
constants::BASEPOINT_ODD_LOOKUP_TABLE, edwards::CachedPoint, edwards::ExtendedPoint,
};

pub mod scalar_mul;
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