1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
|
// Test frontend handling of __sync builtins.
// Modified from a gcc testcase.
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm %s -o - | FileCheck %s
signed char sc;
unsigned char uc;
signed short ss;
unsigned short us;
signed int si;
unsigned int ui;
signed long long sll;
unsigned long long ull;
__int128 s128;
unsigned __int128 u128;
void test_op_ignore (void) // CHECK-LABEL: define{{.*}} void @test_op_ignore
{
(void) __sync_fetch_and_add (&sc, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_add (&uc, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_add (&ss, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_add (&us, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_add (&si, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_add (&ui, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_add (&sll, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_add (&ull, 1); // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_sub (&sc, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_sub (&uc, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_sub (&ss, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_sub (&us, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_sub (&si, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_sub (&ui, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_sub (&sll, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_sub (&ull, 1); // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_or (&sc, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_or (&uc, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_or (&ss, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_or (&us, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_or (&si, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_or (&ui, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_or (&sll, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_or (&ull, 1); // CHECK: atomicrmw or ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_xor (&sc, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_xor (&uc, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_xor (&ss, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_xor (&us, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_xor (&si, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_xor (&ui, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_xor (&sll, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_xor (&ull, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_xor (&u128, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 16
(void) __sync_fetch_and_xor (&s128, 1); // CHECK: atomicrmw xor ptr {{.*}} seq_cst, align 16
(void) __sync_fetch_and_nand (&sc, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_nand (&uc, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_nand (&ss, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_nand (&us, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_nand (&si, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_nand (&ui, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_nand (&sll, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_nand (&ull, 1); // CHECK: atomicrmw nand ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_and (&sc, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_and (&uc, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 1
(void) __sync_fetch_and_and (&ss, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_and (&us, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 2
(void) __sync_fetch_and_and (&si, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_and (&ui, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 4
(void) __sync_fetch_and_and (&sll, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 8
(void) __sync_fetch_and_and (&ull, 1); // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 8
}
void test_fetch_and_op (void) // CHECK-LABEL: define{{.*}} void @test_fetch_and_op
{
sc = __sync_fetch_and_add (&sc, 11); // CHECK: atomicrmw add
uc = __sync_fetch_and_add (&uc, 11); // CHECK: atomicrmw add
ss = __sync_fetch_and_add (&ss, 11); // CHECK: atomicrmw add
us = __sync_fetch_and_add (&us, 11); // CHECK: atomicrmw add
si = __sync_fetch_and_add (&si, 11); // CHECK: atomicrmw add
ui = __sync_fetch_and_add (&ui, 11); // CHECK: atomicrmw add
sll = __sync_fetch_and_add (&sll, 11); // CHECK: atomicrmw add
ull = __sync_fetch_and_add (&ull, 11); // CHECK: atomicrmw add
sc = __sync_fetch_and_sub (&sc, 11); // CHECK: atomicrmw sub
uc = __sync_fetch_and_sub (&uc, 11); // CHECK: atomicrmw sub
ss = __sync_fetch_and_sub (&ss, 11); // CHECK: atomicrmw sub
us = __sync_fetch_and_sub (&us, 11); // CHECK: atomicrmw sub
si = __sync_fetch_and_sub (&si, 11); // CHECK: atomicrmw sub
ui = __sync_fetch_and_sub (&ui, 11); // CHECK: atomicrmw sub
sll = __sync_fetch_and_sub (&sll, 11); // CHECK: atomicrmw sub
ull = __sync_fetch_and_sub (&ull, 11); // CHECK: atomicrmw sub
sc = __sync_fetch_and_or (&sc, 11); // CHECK: atomicrmw or
uc = __sync_fetch_and_or (&uc, 11); // CHECK: atomicrmw or
ss = __sync_fetch_and_or (&ss, 11); // CHECK: atomicrmw or
us = __sync_fetch_and_or (&us, 11); // CHECK: atomicrmw or
si = __sync_fetch_and_or (&si, 11); // CHECK: atomicrmw or
ui = __sync_fetch_and_or (&ui, 11); // CHECK: atomicrmw or
sll = __sync_fetch_and_or (&sll, 11); // CHECK: atomicrmw or
ull = __sync_fetch_and_or (&ull, 11); // CHECK: atomicrmw or
sc = __sync_fetch_and_xor (&sc, 11); // CHECK: atomicrmw xor
uc = __sync_fetch_and_xor (&uc, 11); // CHECK: atomicrmw xor
ss = __sync_fetch_and_xor (&ss, 11); // CHECK: atomicrmw xor
us = __sync_fetch_and_xor (&us, 11); // CHECK: atomicrmw xor
si = __sync_fetch_and_xor (&si, 11); // CHECK: atomicrmw xor
ui = __sync_fetch_and_xor (&ui, 11); // CHECK: atomicrmw xor
sll = __sync_fetch_and_xor (&sll, 11); // CHECK: atomicrmw xor
ull = __sync_fetch_and_xor (&ull, 11); // CHECK: atomicrmw xor
sc = __sync_fetch_and_nand (&sc, 11); // CHECK: atomicrmw nand
uc = __sync_fetch_and_nand (&uc, 11); // CHECK: atomicrmw nand
ss = __sync_fetch_and_nand (&ss, 11); // CHECK: atomicrmw nand
us = __sync_fetch_and_nand (&us, 11); // CHECK: atomicrmw nand
si = __sync_fetch_and_nand (&si, 11); // CHECK: atomicrmw nand
ui = __sync_fetch_and_nand (&ui, 11); // CHECK: atomicrmw nand
sll = __sync_fetch_and_nand (&sll, 11); // CHECK: atomicrmw nand
ull = __sync_fetch_and_nand (&ull, 11); // CHECK: atomicrmw nand
sc = __sync_fetch_and_and (&sc, 11); // CHECK: atomicrmw and
uc = __sync_fetch_and_and (&uc, 11); // CHECK: atomicrmw and
ss = __sync_fetch_and_and (&ss, 11); // CHECK: atomicrmw and
us = __sync_fetch_and_and (&us, 11); // CHECK: atomicrmw and
si = __sync_fetch_and_and (&si, 11); // CHECK: atomicrmw and
ui = __sync_fetch_and_and (&ui, 11); // CHECK: atomicrmw and
sll = __sync_fetch_and_and (&sll, 11); // CHECK: atomicrmw and
ull = __sync_fetch_and_and (&ull, 11); // CHECK: atomicrmw and
}
void test_op_and_fetch (void)
{
sc = __sync_add_and_fetch (&sc, uc); // CHECK: atomicrmw add
uc = __sync_add_and_fetch (&uc, uc); // CHECK: atomicrmw add
ss = __sync_add_and_fetch (&ss, uc); // CHECK: atomicrmw add
us = __sync_add_and_fetch (&us, uc); // CHECK: atomicrmw add
si = __sync_add_and_fetch (&si, uc); // CHECK: atomicrmw add
ui = __sync_add_and_fetch (&ui, uc); // CHECK: atomicrmw add
sll = __sync_add_and_fetch (&sll, uc); // CHECK: atomicrmw add
ull = __sync_add_and_fetch (&ull, uc); // CHECK: atomicrmw add
sc = __sync_sub_and_fetch (&sc, uc); // CHECK: atomicrmw sub
uc = __sync_sub_and_fetch (&uc, uc); // CHECK: atomicrmw sub
ss = __sync_sub_and_fetch (&ss, uc); // CHECK: atomicrmw sub
us = __sync_sub_and_fetch (&us, uc); // CHECK: atomicrmw sub
si = __sync_sub_and_fetch (&si, uc); // CHECK: atomicrmw sub
ui = __sync_sub_and_fetch (&ui, uc); // CHECK: atomicrmw sub
sll = __sync_sub_and_fetch (&sll, uc); // CHECK: atomicrmw sub
ull = __sync_sub_and_fetch (&ull, uc); // CHECK: atomicrmw sub
sc = __sync_or_and_fetch (&sc, uc); // CHECK: atomicrmw or
uc = __sync_or_and_fetch (&uc, uc); // CHECK: atomicrmw or
ss = __sync_or_and_fetch (&ss, uc); // CHECK: atomicrmw or
us = __sync_or_and_fetch (&us, uc); // CHECK: atomicrmw or
si = __sync_or_and_fetch (&si, uc); // CHECK: atomicrmw or
ui = __sync_or_and_fetch (&ui, uc); // CHECK: atomicrmw or
sll = __sync_or_and_fetch (&sll, uc); // CHECK: atomicrmw or
ull = __sync_or_and_fetch (&ull, uc); // CHECK: atomicrmw or
sc = __sync_xor_and_fetch (&sc, uc); // CHECK: atomicrmw xor
uc = __sync_xor_and_fetch (&uc, uc); // CHECK: atomicrmw xor
ss = __sync_xor_and_fetch (&ss, uc); // CHECK: atomicrmw xor
us = __sync_xor_and_fetch (&us, uc); // CHECK: atomicrmw xor
si = __sync_xor_and_fetch (&si, uc); // CHECK: atomicrmw xor
ui = __sync_xor_and_fetch (&ui, uc); // CHECK: atomicrmw xor
sll = __sync_xor_and_fetch (&sll, uc); // CHECK: atomicrmw xor
ull = __sync_xor_and_fetch (&ull, uc); // CHECK: atomicrmw xor
sc = __sync_nand_and_fetch (&sc, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
uc = __sync_nand_and_fetch (&uc, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
ss = __sync_nand_and_fetch (&ss, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
us = __sync_nand_and_fetch (&us, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
si = __sync_nand_and_fetch (&si, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
ui = __sync_nand_and_fetch (&ui, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
sll = __sync_nand_and_fetch (&sll, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
ull = __sync_nand_and_fetch (&ull, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
u128 = __sync_nand_and_fetch (&u128, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
s128 = __sync_nand_and_fetch (&s128, uc); // CHECK: atomicrmw nand
// CHECK: and
// CHECK: xor
// CHECK: -1
sc = __sync_and_and_fetch (&sc, uc); // CHECK: atomicrmw and
uc = __sync_and_and_fetch (&uc, uc); // CHECK: atomicrmw and
ss = __sync_and_and_fetch (&ss, uc); // CHECK: atomicrmw and
us = __sync_and_and_fetch (&us, uc); // CHECK: atomicrmw and
si = __sync_and_and_fetch (&si, uc); // CHECK: atomicrmw and
ui = __sync_and_and_fetch (&ui, uc); // CHECK: atomicrmw and
sll = __sync_and_and_fetch (&sll, uc); // CHECK: atomicrmw and
ull = __sync_and_and_fetch (&ull, uc); // CHECK: atomicrmw and
}
void test_compare_and_swap (void)
{
sc = __sync_val_compare_and_swap (&sc, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 1
// CHECK: extractvalue { i8, i1 } [[PAIR]], 0
uc = __sync_val_compare_and_swap (&uc, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 1
// CHECK: extractvalue { i8, i1 } [[PAIR]], 0
ss = __sync_val_compare_and_swap (&ss, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 2
// CHECK: extractvalue { i16, i1 } [[PAIR]], 0
us = __sync_val_compare_and_swap (&us, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 2
// CHECK: extractvalue { i16, i1 } [[PAIR]], 0
si = __sync_val_compare_and_swap (&si, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 4
// CHECK: extractvalue { i32, i1 } [[PAIR]], 0
ui = __sync_val_compare_and_swap (&ui, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 4
// CHECK: extractvalue { i32, i1 } [[PAIR]], 0
sll = __sync_val_compare_and_swap (&sll, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 8
// CHECK: extractvalue { i64, i1 } [[PAIR]], 0
ull = __sync_val_compare_and_swap (&ull, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 8
// CHECK: extractvalue { i64, i1 } [[PAIR]], 0
ui = __sync_bool_compare_and_swap (&sc, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 1
// CHECK: extractvalue { i8, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&uc, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 1
// CHECK: extractvalue { i8, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&ss, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 2
// CHECK: extractvalue { i16, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&us, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 2
// CHECK: extractvalue { i16, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&si, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 4
// CHECK: extractvalue { i32, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&ui, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 4
// CHECK: extractvalue { i32, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&sll, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 8
// CHECK: extractvalue { i64, i1 } [[PAIR]], 1
ui = __sync_bool_compare_and_swap (&ull, uc, sc);
// CHECK: [[PAIR:%[a-z0-9._]+]] = cmpxchg ptr {{.*}} seq_cst, align 8
// CHECK: extractvalue { i64, i1 } [[PAIR]], 1
}
void test_lock (void)
{
sc = __sync_lock_test_and_set (&sc, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 1
uc = __sync_lock_test_and_set (&uc, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 1
ss = __sync_lock_test_and_set (&ss, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 2
us = __sync_lock_test_and_set (&us, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 2
si = __sync_lock_test_and_set (&si, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 4
ui = __sync_lock_test_and_set (&ui, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 4
sll = __sync_lock_test_and_set (&sll, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 8
ull = __sync_lock_test_and_set (&ull, 1); // CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 8
__sync_synchronize (); // CHECK: fence seq_cst
__sync_lock_release (&sc); // CHECK: store atomic {{.*}} release, align 1
__sync_lock_release (&uc); // CHECK: store atomic {{.*}} release, align 1
__sync_lock_release (&ss); // CHECK: store atomic {{.*}} release, align 2
__sync_lock_release (&us); /// CHECK: store atomic {{.*}} release, align 2
__sync_lock_release (&si); // CHECK: store atomic {{.*}} release, align 4
__sync_lock_release (&ui); // CHECK: store atomic {{.*}} release, align 4
__sync_lock_release (&sll); // CHECK: store atomic {{.*}} release, align 8
__sync_lock_release (&ull); // CHECK: store atomic {{.*}} release, align 8
}
void test_atomic(void) {
ui = __atomic_fetch_min(&ui, 5, __ATOMIC_RELAXED); // CHECK: atomicrmw umin {{.*}} monotonic, align 4
si = __atomic_fetch_min(&si, 5, __ATOMIC_SEQ_CST); // CHECK: atomicrmw min {{.*}} seq_cst, align 4
ui = __atomic_fetch_max(&ui, 5, __ATOMIC_ACQUIRE); // CHECK: atomicrmw umax {{.*}} acquire, align 4
si = __atomic_fetch_max(&si, 5, __ATOMIC_RELEASE); // CHECK: atomicrmw max {{.*}} release, align 4
}
|