rust/crates/core_simd/src/intrinsics.rs
2021-04-09 16:31:03 -04:00

82 lines
2.7 KiB
Rust

//! This module contains the LLVM intrinsics bindings that provide the functionality for this
//! crate.
//!
//! The LLVM assembly language is documented here: <https://llvm.org/docs/LangRef.html>
/// These intrinsics aren't linked directly from LLVM and are mostly undocumented, however they are
/// simply lowered to the matching LLVM instructions by the compiler. The associated instruction
/// is documented alongside each intrinsic.
extern "platform-intrinsic" {
/// add/fadd
pub(crate) fn simd_add<T>(x: T, y: T) -> T;
/// sub/fsub
pub(crate) fn simd_sub<T>(x: T, y: T) -> T;
/// mul/fmul
pub(crate) fn simd_mul<T>(x: T, y: T) -> T;
/// udiv/sdiv/fdiv
pub(crate) fn simd_div<T>(x: T, y: T) -> T;
/// urem/srem/frem
pub(crate) fn simd_rem<T>(x: T, y: T) -> T;
/// shl
pub(crate) fn simd_shl<T>(x: T, y: T) -> T;
/// lshr/ashr
pub(crate) fn simd_shr<T>(x: T, y: T) -> T;
/// and
pub(crate) fn simd_and<T>(x: T, y: T) -> T;
/// or
pub(crate) fn simd_or<T>(x: T, y: T) -> T;
/// xor
pub(crate) fn simd_xor<T>(x: T, y: T) -> T;
/// fptoui/fptosi/uitofp/sitofp
pub(crate) fn simd_cast<T, U>(x: T) -> U;
// floor
#[cfg(feature = "std")]
pub(crate) fn simd_floor<T>(x: T) -> T;
// ceil
#[cfg(feature = "std")]
pub(crate) fn simd_ceil<T>(x: T) -> T;
pub(crate) fn simd_eq<T, U>(x: T, y: T) -> U;
pub(crate) fn simd_ne<T, U>(x: T, y: T) -> U;
pub(crate) fn simd_lt<T, U>(x: T, y: T) -> U;
pub(crate) fn simd_le<T, U>(x: T, y: T) -> U;
pub(crate) fn simd_gt<T, U>(x: T, y: T) -> U;
pub(crate) fn simd_ge<T, U>(x: T, y: T) -> U;
// shufflevector
pub(crate) fn simd_shuffle2<T, U>(x: T, y: T, idx: [u32; 2]) -> U;
pub(crate) fn simd_shuffle4<T, U>(x: T, y: T, idx: [u32; 4]) -> U;
pub(crate) fn simd_shuffle8<T, U>(x: T, y: T, idx: [u32; 8]) -> U;
pub(crate) fn simd_shuffle16<T, U>(x: T, y: T, idx: [u32; 16]) -> U;
pub(crate) fn simd_shuffle32<T, U>(x: T, y: T, idx: [u32; 32]) -> U;
// {s,u}add.sat
pub(crate) fn simd_saturating_add<T>(x: T, y: T) -> T;
// {s,u}sub.sat
pub(crate) fn simd_saturating_sub<T>(x: T, y: T) -> T;
// reductions
pub(crate) fn simd_reduce_add_ordered<T, U>(x: T, y: U) -> U;
pub(crate) fn simd_reduce_mul_ordered<T, U>(x: T, y: U) -> U;
pub(crate) fn simd_reduce_all<T>(x: T) -> bool;
pub(crate) fn simd_reduce_any<T>(x: T) -> bool;
pub(crate) fn simd_reduce_max<T, U>(x: T) -> U;
pub(crate) fn simd_reduce_min<T, U>(x: T) -> U;
pub(crate) fn simd_reduce_and<T, U>(x: T) -> U;
pub(crate) fn simd_reduce_or<T, U>(x: T) -> U;
pub(crate) fn simd_reduce_xor<T, U>(x: T) -> U;
}