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//! Mask reductions implementation for `arm` targets
/// Implementation for ARM + v7 + NEON for 64-bit or 128-bit wide vectors with
/// more than two elements.
macro_rules! arm_128_v7_neon_impl {
($id:ident, $half:ident, $vpmin:ident, $vpmax:ident) => {
impl All for $id {
#[inline]
#[target_feature(enable = "v7,neon")]
unsafe fn all(self) -> bool {
use crate::arch::arm::$vpmin;
use crate::mem::transmute;
union U {
halves: ($half, $half),
vec: $id,
}
let halves = U { vec: self }.halves;
let h: $half = transmute($vpmin(transmute(halves.0), transmute(halves.1)));
h.all()
}
}
impl Any for $id {
#[inline]
#[target_feature(enable = "v7,neon")]
unsafe fn any(self) -> bool {
use crate::arch::arm::$vpmax;
use crate::mem::transmute;
union U {
halves: ($half, $half),
vec: $id,
}
let halves = U { vec: self }.halves;
let h: $half = transmute($vpmax(transmute(halves.0), transmute(halves.1)));
h.any()
}
}
};
}
/// Mask reduction implementation for `arm` targets
macro_rules! impl_mask_reductions {
// 128-bit wide masks
(m8x16) => {
arm_128_v7_neon_impl!(m8x16, m8x8, vpmin_u8, vpmax_u8);
};
(m16x8) => {
arm_128_v7_neon_impl!(m16x8, m16x4, vpmin_u16, vpmax_u16);
};
(m32x4) => {
arm_128_v7_neon_impl!(m32x4, m32x2, vpmin_u32, vpmax_u32);
};
// Fallback to LLVM's default code-generation:
($id:ident) => {
fallback_impl!($id);
};
}
|
