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Test codegen for repr(packed,simd)

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Jubilee Young 2024-06-02 01:03:51 -07:00
parent 9bdc5b2455
commit 5c32f84048
1 changed files with 44 additions and 0 deletions
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tests/codegen/simd/packed-simd-alignment.rs Normal file
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//@ compile-flags: -Cno-prepopulate-passes
#![crate_type = "lib"]
#![feature(repr_simd, core_intrinsics)]
// make sure that codegen emits correctly-aligned loads and stores for repr(packed, simd) types
// the alignment of a load should be no less than T, and no more than the size of the vector type
use std::intrinsics::simd as intrinsics;
#[derive(Copy, Clone)]
#[repr(packed, simd)]
struct f32x3([f32; 3]);
#[derive(Copy, Clone)]
#[repr(packed, simd)]
struct f32x4([f32; 4]);
// CHECK-LABEL: load_f32x3
#[no_mangle]
pub fn load_f32x3(floats: &f32x3) -> f32x3 {
// FIXME: Is a memcpy really the best we can do?
// CHECK: @llvm.memcpy.{{.*}}ptr align 4 {{.*}}ptr align 4
*floats
}
// CHECK-LABEL: load_f32x4
#[no_mangle]
pub fn load_f32x4(floats: &f32x4) -> f32x4 {
// CHECK: load <4 x float>, ptr %{{[a-z0-9_]*}}, align {{4|8|16}}
*floats
}
// CHECK-LABEL: add_f32x3
#[no_mangle]
pub fn add_f32x3(x: f32x3, y: f32x3) -> f32x3 {
// CHECK: load <3 x float>, ptr %{{[a-z0-9_]*}}, align 4
unsafe { intrinsics::simd_add(x, y) }
}
// CHECK-LABEL: add_f32x4
#[no_mangle]
pub fn add_f32x4(x: f32x4, y: f32x4) -> f32x4 {
// CHECK: load <4 x float>, ptr %{{[a-z0-9_]*}}, align {{4|8|16}}
unsafe { intrinsics::simd_add(x, y) }
}