61 lines
2.6 KiB
Rust
61 lines
2.6 KiB
Rust
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// Code generation of atomic operations.
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//
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// compile-flags: -O
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#![crate_type = "lib"]
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use std::sync::atomic::{AtomicI32, Ordering::*};
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// CHECK-LABEL: @compare_exchange
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#[no_mangle]
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pub fn compare_exchange(a: &AtomicI32) {
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 10 monotonic monotonic
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let _ = a.compare_exchange(0, 10, Relaxed, Relaxed);
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 20 release monotonic
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let _ = a.compare_exchange(0, 20, Release, Relaxed);
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 30 acquire monotonic
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 31 acquire acquire
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let _ = a.compare_exchange(0, 30, Acquire, Relaxed);
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let _ = a.compare_exchange(0, 31, Acquire, Acquire);
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 40 acq_rel monotonic
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 41 acq_rel acquire
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let _ = a.compare_exchange(0, 40, AcqRel, Relaxed);
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let _ = a.compare_exchange(0, 41, AcqRel, Acquire);
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 50 seq_cst monotonic
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 51 seq_cst acquire
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// CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 52 seq_cst seq_cst
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let _ = a.compare_exchange(0, 50, SeqCst, Relaxed);
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let _ = a.compare_exchange(0, 51, SeqCst, Acquire);
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let _ = a.compare_exchange(0, 52, SeqCst, SeqCst);
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}
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// CHECK-LABEL: @compare_exchange_weak
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#[no_mangle]
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pub fn compare_exchange_weak(w: &AtomicI32) {
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 10 monotonic monotonic
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let _ = w.compare_exchange_weak(1, 10, Relaxed, Relaxed);
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 20 release monotonic
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let _ = w.compare_exchange_weak(1, 20, Release, Relaxed);
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 30 acquire monotonic
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 31 acquire acquire
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let _ = w.compare_exchange_weak(1, 30, Acquire, Relaxed);
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let _ = w.compare_exchange_weak(1, 31, Acquire, Acquire);
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 40 acq_rel monotonic
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 41 acq_rel acquire
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let _ = w.compare_exchange_weak(1, 40, AcqRel, Relaxed);
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let _ = w.compare_exchange_weak(1, 41, AcqRel, Acquire);
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 50 seq_cst monotonic
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 51 seq_cst acquire
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// CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 52 seq_cst seq_cst
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let _ = w.compare_exchange_weak(1, 50, SeqCst, Relaxed);
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let _ = w.compare_exchange_weak(1, 51, SeqCst, Acquire);
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let _ = w.compare_exchange_weak(1, 52, SeqCst, SeqCst);
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}
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