| // ensures that public symbols are not removed completely |
| #![crate_type = "lib"] |
| // we can compile to a variety of platforms, because we don't need |
| // cross-compiled standard libraries. |
| #![feature(no_core, optin_builtin_traits)] |
| #![no_core] |
| |
| #![feature(repr_simd, simd_ffi, link_llvm_intrinsics, lang_items, rustc_attrs)] |
| |
| |
| #[repr(C)] |
| #[derive(Copy)] |
| #[repr(simd)] |
| pub struct f32x4(f32, f32, f32, f32); |
| |
| |
| extern { |
| #[link_name = "llvm.sqrt.v4f32"] |
| fn vsqrt(x: f32x4) -> f32x4; |
| } |
| |
| pub fn foo(x: f32x4) -> f32x4 { |
| unsafe {vsqrt(x)} |
| } |
| |
| #[repr(C)] |
| #[derive(Copy)] |
| #[repr(simd)] |
| pub struct i32x4(i32, i32, i32, i32); |
| |
| |
| extern { |
| // _mm_sll_epi32 |
| #[cfg(any(target_arch = "x86", |
| target_arch = "x86-64"))] |
| #[link_name = "llvm.x86.sse2.psll.d"] |
| fn integer(a: i32x4, b: i32x4) -> i32x4; |
| |
| // vmaxq_s32 |
| #[cfg(target_arch = "arm")] |
| #[link_name = "llvm.arm.neon.vmaxs.v4i32"] |
| fn integer(a: i32x4, b: i32x4) -> i32x4; |
| // vmaxq_s32 |
| #[cfg(target_arch = "aarch64")] |
| #[link_name = "llvm.aarch64.neon.maxs.v4i32"] |
| fn integer(a: i32x4, b: i32x4) -> i32x4; |
| |
| // just some substitute foreign symbol, not an LLVM intrinsic; so |
| // we still get type checking, but not as detailed as (ab)using |
| // LLVM. |
| #[cfg(not(any(target_arch = "x86", |
| target_arch = "x86-64", |
| target_arch = "arm", |
| target_arch = "aarch64")))] |
| fn integer(a: i32x4, b: i32x4) -> i32x4; |
| } |
| |
| pub fn bar(a: i32x4, b: i32x4) -> i32x4 { |
| unsafe {integer(a, b)} |
| } |
| |
| #[lang = "sized"] |
| pub trait Sized { } |
| |
| #[lang = "copy"] |
| pub trait Copy { } |
| |
| impl Copy for f32 {} |
| impl Copy for i32 {} |
| |
| pub mod marker { |
| pub use Copy; |
| } |
| |
| #[lang = "freeze"] |
| auto trait Freeze {} |
| |
| #[macro_export] |
| #[rustc_builtin_macro] |
| macro_rules! Copy { () => () } |