mirror of https://github.com/rust-lang/rust.git
41 lines
1.4 KiB
Rust
41 lines
1.4 KiB
Rust
//
|
|
|
|
//@ 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 Vec2<T>(pub [T; 2]);
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone, PartialEq, Debug)]
|
|
pub struct Vec4<T>(pub [T; 4]);
|
|
|
|
extern "rust-intrinsic" {
|
|
fn simd_gather<T, P, M>(value: T, pointers: P, mask: M) -> T;
|
|
}
|
|
|
|
// CHECK-LABEL: @gather_f32x2
|
|
#[no_mangle]
|
|
pub unsafe fn gather_f32x2(pointers: Vec2<*const f32>, mask: Vec2<i32>,
|
|
values: Vec2<f32>) -> Vec2<f32> {
|
|
// CHECK: [[A:%[0-9]+]] = lshr <2 x i32> {{.*}}, {{<i32 31, i32 31>|splat \(i32 31\)}}
|
|
// CHECK: [[B:%[0-9]+]] = trunc <2 x i32> [[A]] to <2 x i1>
|
|
// CHECK: call <2 x float> @llvm.masked.gather.v2f32.v2p0(<2 x ptr> {{.*}}, i32 {{.*}}, <2 x i1> [[B]], <2 x float> {{.*}})
|
|
simd_gather(values, pointers, mask)
|
|
}
|
|
|
|
// CHECK-LABEL: @gather_pf32x2
|
|
#[no_mangle]
|
|
pub unsafe fn gather_pf32x2(pointers: Vec2<*const *const f32>, mask: Vec2<i32>,
|
|
values: Vec2<*const f32>) -> Vec2<*const f32> {
|
|
// CHECK: [[A:%[0-9]+]] = lshr <2 x i32> {{.*}}, {{<i32 31, i32 31>|splat \(i32 31\)}}
|
|
// CHECK: [[B:%[0-9]+]] = trunc <2 x i32> [[A]] to <2 x i1>
|
|
// CHECK: call <2 x ptr> @llvm.masked.gather.v2p0.v2p0(<2 x ptr> {{.*}}, i32 {{.*}}, <2 x i1> [[B]], <2 x ptr> {{.*}})
|
|
simd_gather(values, pointers, mask)
|
|
}
|