1 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686-apple-darwin9 | FileCheck %s --check-prefixes=CHECK,X86
2 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=s390x-linux-gnu | FileCheck %s --check-prefixes=CHECK,SYSTEMZ
3
4 // CHECK: @[[NONSTATIC_GLOB_POINTER_FROM_INT:.+]] = global ptr null
5 // CHECK: @[[GLOB_POINTER:.+]] = internal global ptr null
6 // CHECK: @[[GLOB_POINTER_FROM_INT:.+]] = internal global ptr null
7 // CHECK: @[[GLOB_INT:.+]] = internal global i32 0
8 // CHECK: @[[GLOB_FLT:.+]] = internal global float {{[0e\+-\.]+}}, align
9 // CHECK: @[[GLOB_DBL:.+]] = internal global double {{[0e\+-\.]+}}, align
10 // X86: @[[GLOB_LONGDBL:.+]] = internal global x86_fp80 {{[0xK]+}}, align
11 // SYSTEMZ: @[[GLOB_LONGDBL:.+]] = internal global fp128 {{[0xL]+}}, align
12
atomic(void)13 int atomic(void) {
14 // non-sensical test for sync functions
15 int old;
16 int val = 1;
17 char valc = 1;
18 _Bool valb = 0;
19 unsigned int uval = 1;
20 int cmp = 0;
21 int* ptrval;
22
23 old = __sync_fetch_and_add(&val, 1);
24 // CHECK: atomicrmw add ptr %val, i32 1 seq_cst, align 4
25
26 old = __sync_fetch_and_sub(&valc, 2);
27 // CHECK: atomicrmw sub ptr %valc, i8 2 seq_cst, align 1
28
29 old = __sync_fetch_and_min(&val, 3);
30 // CHECK: atomicrmw min ptr %val, i32 3 seq_cst, align 4
31
32 old = __sync_fetch_and_max(&val, 4);
33 // CHECK: atomicrmw max ptr %val, i32 4 seq_cst, align 4
34
35 old = __sync_fetch_and_umin(&uval, 5u);
36 // CHECK: atomicrmw umin ptr %uval, i32 5 seq_cst, align 4
37
38 old = __sync_fetch_and_umax(&uval, 6u);
39 // CHECK: atomicrmw umax ptr %uval, i32 6 seq_cst, align 4
40
41 old = __sync_lock_test_and_set(&val, 7);
42 // CHECK: atomicrmw xchg ptr %val, i32 7 seq_cst, align 4
43
44 old = __sync_swap(&val, 8);
45 // CHECK: atomicrmw xchg ptr %val, i32 8 seq_cst, align 4
46
47 old = __sync_val_compare_and_swap(&val, 4, 1976);
48 // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg ptr %val, i32 4, i32 1976 seq_cst seq_cst, align 4
49 // CHECK: extractvalue { i32, i1 } [[PAIR]], 0
50
51 old = __sync_bool_compare_and_swap(&val, 4, 1976);
52 // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg ptr %val, i32 4, i32 1976 seq_cst seq_cst, align 4
53 // CHECK: extractvalue { i32, i1 } [[PAIR]], 1
54
55 old = __sync_fetch_and_and(&val, 0x9);
56 // CHECK: atomicrmw and ptr %val, i32 9 seq_cst, align 4
57
58 old = __sync_fetch_and_or(&val, 0xa);
59 // CHECK: atomicrmw or ptr %val, i32 10 seq_cst, align 4
60
61 old = __sync_fetch_and_xor(&val, 0xb);
62 // CHECK: atomicrmw xor ptr %val, i32 11 seq_cst, align 4
63
64 old = __sync_fetch_and_nand(&val, 0xc);
65 // CHECK: atomicrmw nand ptr %val, i32 12 seq_cst, align 4
66
67 old = __sync_add_and_fetch(&val, 1);
68 // CHECK: atomicrmw add ptr %val, i32 1 seq_cst, align 4
69
70 old = __sync_sub_and_fetch(&val, 2);
71 // CHECK: atomicrmw sub ptr %val, i32 2 seq_cst, align 4
72
73 old = __sync_and_and_fetch(&valc, 3);
74 // CHECK: atomicrmw and ptr %valc, i8 3 seq_cst, align 1
75
76 old = __sync_or_and_fetch(&valc, 4);
77 // CHECK: atomicrmw or ptr %valc, i8 4 seq_cst, align 1
78
79 old = __sync_xor_and_fetch(&valc, 5);
80 // CHECK: atomicrmw xor ptr %valc, i8 5 seq_cst, align 1
81
82 old = __sync_nand_and_fetch(&valc, 6);
83 // CHECK: atomicrmw nand ptr %valc, i8 6 seq_cst, align 1
84
85 __sync_val_compare_and_swap((void **)0, (void *)0, (void *)0);
86 // X86: [[PAIR:%[a-z0-9_.]+]] = cmpxchg ptr null, i32 0, i32 0 seq_cst seq_cst, align 4
87 // X86-NEXT: extractvalue { i32, i1 } [[PAIR]], 0
88 // SYSTEMZ: [[PAIR:%[a-z0-9_.]+]] = cmpxchg ptr null, i64 0, i64 0 seq_cst seq_cst, align 8
89 // SYSTEMZ-NEXT: extractvalue { i64, i1 } [[PAIR]], 0
90
91 if ( __sync_val_compare_and_swap(&valb, 0, 1)) {
92 // CHECK: [[PAIR:%[a-z0-9_.]+]] = cmpxchg ptr %valb, i8 0, i8 1 seq_cst seq_cst, align 1
93 // CHECK: [[VAL:%[a-z0-9_.]+]] = extractvalue { i8, i1 } [[PAIR]], 0
94 // CHECK: trunc i8 [[VAL]] to i1
95 old = 42;
96 }
97
98 __sync_bool_compare_and_swap((void **)0, (void *)0, (void *)0);
99 // X86: cmpxchg ptr null, i32 0, i32 0 seq_cst seq_cst, align 4
100 // SYSTEMZ: cmpxchg ptr null, i64 0, i64 0 seq_cst seq_cst, align 8
101
102 __sync_lock_release(&val);
103 // CHECK: store atomic i32 0, {{.*}} release, align 4
104
105 __sync_lock_release(&ptrval);
106 // X86: store atomic i32 0, {{.*}} release, align 4
107 // SYSTEMZ: store atomic i64 0, {{.*}} release, align 8
108
109 __sync_synchronize ();
110 // CHECK: fence seq_cst
111
112 return old;
113 }
114
115 // CHECK: @release_return
release_return(int * lock)116 void release_return(int *lock) {
117 // Ensure this is actually returning void all the way through.
118 return __sync_lock_release(lock);
119 // CHECK: store atomic {{.*}} release, align 4
120 }
121
122
123 // Atomics with address spaces.
124 // CHECK: @addrspace
addrspace(int * P)125 void addrspace(int __attribute__((address_space(256))) * P) {
126 __sync_bool_compare_and_swap(P, 0, 1);
127 // CHECK: cmpxchg ptr addrspace(256){{.*}}, i32 0, i32 1 seq_cst seq_cst, align 4
128
129 __sync_val_compare_and_swap(P, 0, 1);
130 // CHECK: cmpxchg ptr addrspace(256){{.*}}, i32 0, i32 1 seq_cst seq_cst, align 4
131
132 __sync_xor_and_fetch(P, 123);
133 // CHECK: atomicrmw xor ptr addrspace(256){{.*}}, i32 123 seq_cst, align 4
134 }
135
136 // Ensure that global initialization of atomics is correct.
137 static _Atomic(int *) glob_pointer = (void *)0;
138 static _Atomic(int *) glob_pointer_from_int = 0;
139 _Atomic(int *) nonstatic_glob_pointer_from_int = 0LL;
140 static _Atomic int glob_int = 0;
141 static _Atomic float glob_flt = 0.0f;
142 static _Atomic double glob_dbl = 0.0f;
143 static _Atomic long double glob_longdbl = 0.0f;
144
force_global_uses(void)145 void force_global_uses(void) {
146 // X86: %atomic-temp = alloca x86_fp80, align 16
147 (void)glob_pointer;
148 // CHECK: load atomic ptr, ptr @[[GLOB_POINTER]] seq_cst
149 (void)glob_pointer_from_int;
150 // CHECK-NEXT: load atomic ptr, ptr @[[GLOB_POINTER_FROM_INT]] seq_cst
151 (void)nonstatic_glob_pointer_from_int;
152 // CHECK-NEXT: load atomic ptr, ptr @[[NONSTATIC_GLOB_POINTER_FROM_INT]] seq_cst
153 (void)glob_int;
154 // CHECK-NEXT: load atomic i32, ptr @[[GLOB_INT]] seq_cst
155 (void)glob_flt;
156 // CHECK-NEXT: load atomic float, ptr @[[GLOB_FLT]] seq_cst
157 (void)glob_dbl;
158 // CHECK-NEXT: load atomic double, ptr @[[GLOB_DBL]] seq_cst
159 (void)glob_longdbl;
160 // X86: call void @__atomic_load(i32 noundef 16, ptr noundef @glob_longdbl, ptr noundef %atomic-temp
161 // X86-NEXT: %0 = load x86_fp80, ptr %atomic-temp, align 16
162 // SYSTEMZ: load atomic fp128, ptr @[[GLOB_LONGDBL]] seq_cst
163 }
164