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17 lines
435 B
Rust
17 lines
435 B
Rust
// assembly-output: emit-asm
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// compile-flags: -O
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// compile-flags: --target aarch64-unknown-linux-gnu
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// needs-llvm-components: aarch64
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// only-aarch64
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// only-linux
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#![crate_type = "rlib"]
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use std::sync::atomic::{AtomicI32, Ordering::*};
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pub fn compare_exchange(a: &AtomicI32) {
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// On AArch64 LLVM should outline atomic operations.
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// CHECK: __aarch64_cas4_relax
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let _ = a.compare_exchange(0, 10, Relaxed, Relaxed);
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}
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