1 // Code generation of atomic operations.
2 // min-llvm-version: 13.0
6 use std::sync::atomic::{AtomicI32, Ordering::*};
8 // CHECK-LABEL: @compare_exchange
10 pub fn compare_exchange(a: &AtomicI32) {
11 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 10 monotonic monotonic
12 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 11 monotonic acquire
13 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 12 monotonic seq_cst
14 let _ = a.compare_exchange(0, 10, Relaxed, Relaxed);
15 let _ = a.compare_exchange(0, 11, Relaxed, Acquire);
16 let _ = a.compare_exchange(0, 12, Relaxed, SeqCst);
18 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 20 release monotonic
19 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 21 release acquire
20 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 22 release seq_cst
21 let _ = a.compare_exchange(0, 20, Release, Relaxed);
22 let _ = a.compare_exchange(0, 21, Release, Acquire);
23 let _ = a.compare_exchange(0, 22, Release, SeqCst);
25 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 30 acquire monotonic
26 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 31 acquire acquire
27 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 32 acquire seq_cst
28 let _ = a.compare_exchange(0, 30, Acquire, Relaxed);
29 let _ = a.compare_exchange(0, 31, Acquire, Acquire);
30 let _ = a.compare_exchange(0, 32, Acquire, SeqCst);
32 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 40 acq_rel monotonic
33 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 41 acq_rel acquire
34 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 42 acq_rel seq_cst
35 let _ = a.compare_exchange(0, 40, AcqRel, Relaxed);
36 let _ = a.compare_exchange(0, 41, AcqRel, Acquire);
37 let _ = a.compare_exchange(0, 42, AcqRel, SeqCst);
39 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 50 seq_cst monotonic
40 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 51 seq_cst acquire
41 // CHECK: cmpxchg {{i32\*|ptr}} %{{.*}}, i32 0, i32 52 seq_cst seq_cst
42 let _ = a.compare_exchange(0, 50, SeqCst, Relaxed);
43 let _ = a.compare_exchange(0, 51, SeqCst, Acquire);
44 let _ = a.compare_exchange(0, 52, SeqCst, SeqCst);
47 // CHECK-LABEL: @compare_exchange_weak
49 pub fn compare_exchange_weak(w: &AtomicI32) {
50 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 10 monotonic monotonic
51 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 11 monotonic acquire
52 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 12 monotonic seq_cst
53 let _ = w.compare_exchange_weak(1, 10, Relaxed, Relaxed);
54 let _ = w.compare_exchange_weak(1, 11, Relaxed, Acquire);
55 let _ = w.compare_exchange_weak(1, 12, Relaxed, SeqCst);
57 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 20 release monotonic
58 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 21 release acquire
59 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 22 release seq_cst
60 let _ = w.compare_exchange_weak(1, 20, Release, Relaxed);
61 let _ = w.compare_exchange_weak(1, 21, Release, Acquire);
62 let _ = w.compare_exchange_weak(1, 22, Release, SeqCst);
64 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 30 acquire monotonic
65 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 31 acquire acquire
66 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 32 acquire seq_cst
67 let _ = w.compare_exchange_weak(1, 30, Acquire, Relaxed);
68 let _ = w.compare_exchange_weak(1, 31, Acquire, Acquire);
69 let _ = w.compare_exchange_weak(1, 32, Acquire, SeqCst);
71 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 40 acq_rel monotonic
72 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 41 acq_rel acquire
73 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 42 acq_rel seq_cst
74 let _ = w.compare_exchange_weak(1, 40, AcqRel, Relaxed);
75 let _ = w.compare_exchange_weak(1, 41, AcqRel, Acquire);
76 let _ = w.compare_exchange_weak(1, 42, AcqRel, SeqCst);
78 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 50 seq_cst monotonic
79 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 51 seq_cst acquire
80 // CHECK: cmpxchg weak {{i32\*|ptr}} %{{.*}}, i32 1, i32 52 seq_cst seq_cst
81 let _ = w.compare_exchange_weak(1, 50, SeqCst, Relaxed);
82 let _ = w.compare_exchange_weak(1, 51, SeqCst, Acquire);
83 let _ = w.compare_exchange_weak(1, 52, SeqCst, SeqCst);