use std::arch::aarch64::{float32x4_t, vdupq_n_f32, vgetq_lane_f32};
reduce_impl_wrap!(
f32,
arm64simd_min_f32_16n,
16,
4,
(),
f32::MAX,
#[inline(never)]
fn run(buf: &[f32], _: ()) -> f32 {
assert!(buf.len() % 16 == 0);
assert!(buf.len() > 0);
unsafe {
let len = buf.len();
let ptr = buf.as_ptr();
let mut out: float32x4_t = vdupq_n_f32(f32::MAX);
std::arch::asm!("
mov v1.16b, v0.16b
mov v2.16b, v0.16b
mov v3.16b, v0.16b
2:
ld1 {{v4.4s, v5.4s, v6.4s, v7.4s}}, [{ptr}], 64
fmin v0.4s, v0.4s, v4.4s
fmin v1.4s, v1.4s, v5.4s
fmin v2.4s, v2.4s, v6.4s
fmin v3.4s, v3.4s, v7.4s
subs {len}, {len}, 16
bne 2b
fmin v0.4s, v0.4s, v1.4s
fmin v2.4s, v2.4s, v3.4s
fmin v0.4s, v0.4s, v2.4s
fminv s0, v0.4s
",
len = inout(reg) len => _,
ptr = inout(reg) ptr => _,
inout("v0") out, out("v1") _, out("v2") _, out("v3") _,
out("v4") _, out("v5") _, out("v6") _, out("v7") _,);
vgetq_lane_f32(out, 0)
}
},
#[inline(never)]
fn reduce_two(a: f32, b: f32) -> f32 {
a.min(b)
}
);
#[cfg(test)]
mod test_arm64simd_min_f32_16n {
use super::*;
crate::min_frame_tests!(true, f32, arm64simd_min_f32_16n);
}