atomic.c revision ef8225444452a1486bd721f3285301fe84643b00 
1// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686-apple-darwin9 | FileCheck %s
2
3int atomic(void) {
4  // non-sensical test for sync functions
5  int old;
6  int val = 1;
7  char valc = 1;
8  _Bool valb = 0;
9  unsigned int uval = 1;
10  int cmp = 0;
11  int* ptrval;
12
13  old = __sync_fetch_and_add(&val, 1);
14  // CHECK: atomicrmw add i32* %val, i32 1 seq_cst
15
16  old = __sync_fetch_and_sub(&valc, 2);
17  // CHECK: atomicrmw sub i8* %valc, i8 2 seq_cst
18
19  old = __sync_fetch_and_min(&val, 3);
20  // CHECK: atomicrmw min i32* %val, i32 3 seq_cst
21
22  old = __sync_fetch_and_max(&val, 4);
23  // CHECK: atomicrmw max i32* %val, i32 4 seq_cst
24
25  old = __sync_fetch_and_umin(&uval, 5u);
26  // CHECK: atomicrmw umin i32* %uval, i32 5 seq_cst
27
28  old = __sync_fetch_and_umax(&uval, 6u);
29  // CHECK: atomicrmw umax i32* %uval, i32 6 seq_cst
30
31  old = __sync_lock_test_and_set(&val, 7);
32  // CHECK: atomicrmw xchg i32* %val, i32 7 seq_cst
33
34  old = __sync_swap(&val, 8);
35  // CHECK: atomicrmw xchg i32* %val, i32 8 seq_cst
36
37  old = __sync_val_compare_and_swap(&val, 4, 1976);
38  // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg i32* %val, i32 4, i32 1976 seq_cst
39  // CHECK: extractvalue { i32, i1 } [[PAIR]], 0
40
41  old = __sync_bool_compare_and_swap(&val, 4, 1976);
42  // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg i32* %val, i32 4, i32 1976 seq_cst
43  // CHECK: extractvalue { i32, i1 } [[PAIR]], 1
44
45  old = __sync_fetch_and_and(&val, 0x9);
46  // CHECK: atomicrmw and i32* %val, i32 9 seq_cst
47
48  old = __sync_fetch_and_or(&val, 0xa);
49  // CHECK: atomicrmw or i32* %val, i32 10 seq_cst
50
51  old = __sync_fetch_and_xor(&val, 0xb);
52  // CHECK: atomicrmw xor i32* %val, i32 11 seq_cst
53
54  old = __sync_add_and_fetch(&val, 1);
55  // CHECK: atomicrmw add i32* %val, i32 1 seq_cst
56
57  old = __sync_sub_and_fetch(&val, 2);
58  // CHECK: atomicrmw sub i32* %val, i32 2 seq_cst
59
60  old = __sync_and_and_fetch(&valc, 3);
61  // CHECK: atomicrmw and i8* %valc, i8 3 seq_cst
62
63  old = __sync_or_and_fetch(&valc, 4);
64  // CHECK: atomicrmw or i8* %valc, i8 4 seq_cst
65
66  old = __sync_xor_and_fetch(&valc, 5);
67  // CHECK: atomicrmw xor i8* %valc, i8 5 seq_cst
68
69  __sync_val_compare_and_swap((void **)0, (void *)0, (void *)0);
70  // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg i32* null, i32 0, i32 0 seq_cst
71  // CHECK: extractvalue { i32, i1 } [[PAIR]], 0
72
73  if ( __sync_val_compare_and_swap(&valb, 0, 1)) {
74    // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg i8* %valb, i8 0, i8 1 seq_cst
75    // CHECK: [[VAL:%[a-z0-9_.]+]] = extractvalue { i8, i1 } [[PAIR]], 0
76    // CHECK: trunc i8 [[VAL]] to i1
77    old = 42;
78  }
79
80  __sync_bool_compare_and_swap((void **)0, (void *)0, (void *)0);
81  // CHECK: cmpxchg i32* null, i32 0, i32 0 seq_cst
82
83  __sync_lock_release(&val);
84  // CHECK: store atomic i32 0, {{.*}} release, align 4
85
86  __sync_lock_release(&ptrval);
87  // CHECK: store atomic i32 0, {{.*}} release, align 4
88
89  __sync_synchronize ();
90  // CHECK: fence seq_cst
91
92  return old;
93}
94
95// CHECK: @release_return
96void release_return(int *lock) {
97  // Ensure this is actually returning void all the way through.
98  return __sync_lock_release(lock);
99  // CHECK: store atomic {{.*}} release, align 4
100}
101
102
103// rdar://8461279 - Atomics with address spaces.
104// CHECK: @addrspace
105void addrspace(int  __attribute__((address_space(256))) * P) {
106  __sync_bool_compare_and_swap(P, 0, 1);
107  // CHECK: cmpxchg i32 addrspace(256)*{{.*}}, i32 0, i32 1 seq_cst
108
109  __sync_val_compare_and_swap(P, 0, 1);
110  // CHECK: cmpxchg i32 addrspace(256)*{{.*}}, i32 0, i32 1 seq_cst
111
112  __sync_xor_and_fetch(P, 123);
113  // CHECK: atomicrmw xor i32 addrspace(256)*{{.*}}, i32 123 seq_cst
114}
115