File: simd-intrinsic-generic-select.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (37 lines) | stat: -rw-r--r-- 862 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
//@ compile-flags: -C no-prepopulate-passes

#![crate_type = "lib"]

#![feature(repr_simd, intrinsics)]
#[allow(non_camel_case_types)]

#[repr(simd)]
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct f32x4(pub [f32; 4]);

#[repr(simd)]
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct f32x8([f32; 8]);

#[repr(simd)]
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct b8x4(pub [i8; 4]);

extern "rust-intrinsic" {
    fn simd_select<T, U>(x: T, a: U, b: U) -> U;
    fn simd_select_bitmask<T, U>(x: T, a: U, b: U) -> U;
}

// CHECK-LABEL: @select
#[no_mangle]
pub unsafe fn select(m: b8x4, a: f32x4, b: f32x4) -> f32x4 {
    // CHECK: select <4 x i1>
    simd_select(m, a, b)
}

// CHECK-LABEL: @select_bitmask
#[no_mangle]
pub unsafe fn select_bitmask(m: i8, a: f32x8, b: f32x8) -> f32x8 {
    // CHECK: select <8 x i1>
    simd_select_bitmask(m, a, b)
}