mirror of https://github.com/rust-lang/rust.git
54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
//@ compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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#![feature(repr_simd, intrinsics)]
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#![allow(non_camel_case_types)]
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#[repr(simd)]
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#[derive(Copy, Clone, PartialEq, Debug)]
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pub struct f32x4(pub [f32; 4]);
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#[repr(simd)]
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#[derive(Copy, Clone, PartialEq, Debug)]
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pub struct f32x8([f32; 8]);
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#[repr(simd)]
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#[derive(Copy, Clone, PartialEq, Debug)]
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pub struct b8x4(pub [i8; 4]);
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#[repr(simd)]
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#[derive(Copy, Clone, PartialEq, Debug)]
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pub struct i32x4([i32; 4]);
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extern "rust-intrinsic" {
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fn simd_select<T, U>(x: T, a: U, b: U) -> U;
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fn simd_select_bitmask<T, U>(x: T, a: U, b: U) -> U;
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}
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// CHECK-LABEL: @select_m8
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#[no_mangle]
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pub unsafe fn select_m8(m: b8x4, a: f32x4, b: f32x4) -> f32x4 {
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// CHECK: [[A:%[0-9]+]] = lshr <4 x i8> %{{.*}}, {{<i8 7, i8 7, i8 7, i8 7>|splat \(i8 7\)}}
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// CHECK: [[B:%[0-9]+]] = trunc <4 x i8> [[A]] to <4 x i1>
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// CHECK: select <4 x i1> [[B]]
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simd_select(m, a, b)
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}
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// CHECK-LABEL: @select_m32
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#[no_mangle]
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pub unsafe fn select_m32(m: i32x4, a: f32x4, b: f32x4) -> f32x4 {
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// CHECK: [[A:%[0-9]+]] = lshr <4 x i32> %{{.*}}, {{<i32 31, i32 31, i32 31, i32 31>|splat \(i32 31\)}}
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// CHECK: [[B:%[0-9]+]] = trunc <4 x i32> [[A]] to <4 x i1>
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// CHECK: select <4 x i1> [[B]]
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simd_select(m, a, b)
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}
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// CHECK-LABEL: @select_bitmask
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#[no_mangle]
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pub unsafe fn select_bitmask(m: i8, a: f32x8, b: f32x8) -> f32x8 {
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// CHECK: [[A:%[0-9]+]] = bitcast i8 {{.*}} to <8 x i1>
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// CHECK: select <8 x i1> [[A]]
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simd_select_bitmask(m, a, b)
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}
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