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https://github.com/rust-lang/rust
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45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
//@ compile-flags: -Cno-prepopulate-passes
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#![crate_type = "lib"]
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#![feature(repr_simd, core_intrinsics)]
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// make sure that codegen emits correctly-aligned loads and stores for repr(packed, simd) types
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// the alignment of a load should be no less than T, and no more than the size of the vector type
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use std::intrinsics::simd as intrinsics;
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#[derive(Copy, Clone)]
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#[repr(packed, simd)]
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struct f32x3([f32; 3]);
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#[derive(Copy, Clone)]
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#[repr(packed, simd)]
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struct f32x4([f32; 4]);
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// CHECK-LABEL: load_f32x3
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#[no_mangle]
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pub fn load_f32x3(floats: &f32x3) -> f32x3 {
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// FIXME: Is a memcpy really the best we can do?
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// CHECK: @llvm.memcpy.{{.*}}ptr align 4 {{.*}}ptr align 4
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*floats
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}
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// CHECK-LABEL: load_f32x4
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#[no_mangle]
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pub fn load_f32x4(floats: &f32x4) -> f32x4 {
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// CHECK: load <4 x float>, ptr %{{[a-z0-9_]*}}, align {{4|8|16}}
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*floats
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}
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// CHECK-LABEL: add_f32x3
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#[no_mangle]
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pub fn add_f32x3(x: f32x3, y: f32x3) -> f32x3 {
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// CHECK: load <3 x float>, ptr %{{[a-z0-9_]*}}, align 4
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unsafe { intrinsics::simd_add(x, y) }
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}
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// CHECK-LABEL: add_f32x4
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#[no_mangle]
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pub fn add_f32x4(x: f32x4, y: f32x4) -> f32x4 {
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// CHECK: load <4 x float>, ptr %{{[a-z0-9_]*}}, align {{4|8|16}}
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unsafe { intrinsics::simd_add(x, y) }
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}
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