1 // Code generation of atomic operations.
5 use std::sync::atomic::{AtomicI32, Ordering::*};
7 // CHECK-LABEL: @compare_exchange
9 pub fn compare_exchange(a: &AtomicI32) {
10 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 10 monotonic monotonic
11 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 11 monotonic acquire
12 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 12 monotonic seq_cst
13 let _ = a.compare_exchange(0, 10, Relaxed, Relaxed);
14 let _ = a.compare_exchange(0, 11, Relaxed, Acquire);
15 let _ = a.compare_exchange(0, 12, Relaxed, SeqCst);
17 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 20 release monotonic
18 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 21 release acquire
19 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 22 release seq_cst
20 let _ = a.compare_exchange(0, 20, Release, Relaxed);
21 let _ = a.compare_exchange(0, 21, Release, Acquire);
22 let _ = a.compare_exchange(0, 22, Release, SeqCst);
24 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 30 acquire monotonic
25 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 31 acquire acquire
26 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 32 acquire seq_cst
27 let _ = a.compare_exchange(0, 30, Acquire, Relaxed);
28 let _ = a.compare_exchange(0, 31, Acquire, Acquire);
29 let _ = a.compare_exchange(0, 32, Acquire, SeqCst);
31 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 40 acq_rel monotonic
32 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 41 acq_rel acquire
33 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 42 acq_rel seq_cst
34 let _ = a.compare_exchange(0, 40, AcqRel, Relaxed);
35 let _ = a.compare_exchange(0, 41, AcqRel, Acquire);
36 let _ = a.compare_exchange(0, 42, AcqRel, SeqCst);
38 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 50 seq_cst monotonic
39 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 51 seq_cst acquire
40 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 52 seq_cst seq_cst
41 let _ = a.compare_exchange(0, 50, SeqCst, Relaxed);
42 let _ = a.compare_exchange(0, 51, SeqCst, Acquire);
43 let _ = a.compare_exchange(0, 52, SeqCst, SeqCst);
46 // CHECK-LABEL: @compare_exchange_weak
48 pub fn compare_exchange_weak(w: &AtomicI32) {
49 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 10 monotonic monotonic
50 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 11 monotonic acquire
51 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 12 monotonic seq_cst
52 let _ = w.compare_exchange_weak(1, 10, Relaxed, Relaxed);
53 let _ = w.compare_exchange_weak(1, 11, Relaxed, Acquire);
54 let _ = w.compare_exchange_weak(1, 12, Relaxed, SeqCst);
56 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 20 release monotonic
57 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 21 release acquire
58 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 22 release seq_cst
59 let _ = w.compare_exchange_weak(1, 20, Release, Relaxed);
60 let _ = w.compare_exchange_weak(1, 21, Release, Acquire);
61 let _ = w.compare_exchange_weak(1, 22, Release, SeqCst);
63 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 30 acquire monotonic
64 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 31 acquire acquire
65 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 32 acquire seq_cst
66 let _ = w.compare_exchange_weak(1, 30, Acquire, Relaxed);
67 let _ = w.compare_exchange_weak(1, 31, Acquire, Acquire);
68 let _ = w.compare_exchange_weak(1, 32, Acquire, SeqCst);
70 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 40 acq_rel monotonic
71 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 41 acq_rel acquire
72 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 42 acq_rel seq_cst
73 let _ = w.compare_exchange_weak(1, 40, AcqRel, Relaxed);
74 let _ = w.compare_exchange_weak(1, 41, AcqRel, Acquire);
75 let _ = w.compare_exchange_weak(1, 42, AcqRel, SeqCst);
77 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 50 seq_cst monotonic
78 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 51 seq_cst acquire
79 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 52 seq_cst seq_cst
80 let _ = w.compare_exchange_weak(1, 50, SeqCst, Relaxed);
81 let _ = w.compare_exchange_weak(1, 51, SeqCst, Acquire);
82 let _ = w.compare_exchange_weak(1, 52, SeqCst, SeqCst);