src/test/assembly/asm/aarch64-outline-atomics.rs

   1 // assembly-output: emit-asm
   2 // compile-flags: -O
   3 // compile-flags: --target aarch64-unknown-linux-gnu
   4 // needs-llvm-components: aarch64
   5 // only-aarch64
   6 // only-linux
   7
   8 #![crate_type = "rlib"]
   9
  10 use std::sync::atomic::{AtomicI32, Ordering::*};
  11
  12 pub fn compare_exchange(a: &AtomicI32) {
  13     // On AArch64 LLVM should outline atomic operations.
  14     // CHECK: __aarch64_cas4_relax
  15     let _ = a.compare_exchange(0, 10, Relaxed, Relaxed);
  16 }