diff options
Diffstat (limited to 'src/test/codegen/swap-simd-types.rs')
-rw-r--r-- | src/test/codegen/swap-simd-types.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/test/codegen/swap-simd-types.rs b/src/test/codegen/swap-simd-types.rs new file mode 100644 index 000000000..c90b277eb --- /dev/null +++ b/src/test/codegen/swap-simd-types.rs @@ -0,0 +1,32 @@ +// 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); + } +} |