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