mirror of https://github.com/rust-lang/rust
86 lines
1.5 KiB
Rust
86 lines
1.5 KiB
Rust
//@ run-pass
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#![allow(non_camel_case_types)]
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#![feature(repr_simd, intrinsics)]
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use std::ops;
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#[repr(simd)]
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#[derive(Copy, Clone)]
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struct f32x4(f32, f32, f32, f32);
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#[repr(simd)]
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#[derive(Copy, Clone)]
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struct A<const N: usize>([f32; N]);
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#[repr(simd)]
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#[derive(Copy, Clone)]
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struct B<T>([T; 4]);
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#[repr(simd)]
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#[derive(Copy, Clone)]
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struct C<T, const N: usize>([T; N]);
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extern "rust-intrinsic" {
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fn simd_add<T>(x: T, y: T) -> T;
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}
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fn add<T: ops::Add<Output=T>>(lhs: T, rhs: T) -> T {
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lhs + rhs
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}
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impl ops::Add for f32x4 {
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type Output = f32x4;
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fn add(self, rhs: f32x4) -> f32x4 {
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unsafe { simd_add(self, rhs) }
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}
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}
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impl ops::Add for A<4> {
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type Output = Self;
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fn add(self, rhs: Self) -> Self {
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unsafe { simd_add(self, rhs) }
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}
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}
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impl ops::Add for B<f32> {
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type Output = Self;
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fn add(self, rhs: Self) -> Self {
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unsafe { simd_add(self, rhs) }
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}
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}
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impl ops::Add for C<f32, 4> {
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type Output = Self;
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fn add(self, rhs: Self) -> Self {
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unsafe { simd_add(self, rhs) }
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}
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}
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pub fn main() {
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let x = [1.0f32, 2.0f32, 3.0f32, 4.0f32];
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let y = [2.0f32, 4.0f32, 6.0f32, 8.0f32];
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// lame-o
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let a = f32x4(1.0f32, 2.0f32, 3.0f32, 4.0f32);
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let f32x4(a0, a1, a2, a3) = add(a, a);
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assert_eq!(a0, 2.0f32);
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assert_eq!(a1, 4.0f32);
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assert_eq!(a2, 6.0f32);
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assert_eq!(a3, 8.0f32);
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let a = A(x);
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assert_eq!(add(a, a).0, y);
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let b = B(x);
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assert_eq!(add(b, b).0, y);
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let c = C(x);
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assert_eq!(add(c, c).0, y);
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}
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