| // compile-flags: -O -C target-feature=+avx |
| // only-x86_64 |
| // ignore-debug: the debug assertions get in the way |
| |
| #![crate_type = "lib"] |
| |
| use std::mem::swap; |
| |
| // SIMD types are highly-aligned already, so make sure the swap code leaves their |
| // types alone and doesn't pessimize them (such as by swapping them as `usize`s). |
| extern crate core; |
| use core::arch::x86_64::__m256; |
| |
| // CHECK-LABEL: @swap_single_m256 |
| #[no_mangle] |
| pub fn swap_single_m256(x: &mut __m256, y: &mut __m256) { |
| // CHECK-NOT: alloca |
| // CHECK: load <8 x float>{{.+}}align 32 |
| // CHECK: store <8 x float>{{.+}}align 32 |
| swap(x, y) |
| } |
| |
| // CHECK-LABEL: @swap_m256_slice |
| #[no_mangle] |
| pub fn swap_m256_slice(x: &mut [__m256], y: &mut [__m256]) { |
| // CHECK-NOT: alloca |
| // CHECK: load <8 x float>{{.+}}align 32 |
| // CHECK: store <8 x float>{{.+}}align 32 |
| if x.len() == y.len() { |
| x.swap_with_slice(y); |
| } |
| } |
| |
| // CHECK-LABEL: @swap_bytes32 |
| #[no_mangle] |
| pub fn swap_bytes32(x: &mut [u8; 32], y: &mut [u8; 32]) { |
| // CHECK-NOT: alloca |
| // CHECK: load <32 x i8>{{.+}}align 1 |
| // CHECK: store <32 x i8>{{.+}}align 1 |
| swap(x, y) |
| } |