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
|
; RUN: llc < %s -O0 -march=x86 -mcpu=corei7 -verify-machineinstrs | FileCheck %s --check-prefix X32
@sc64 = external global i64
define void @atomic_fetch_add64() nounwind {
; X32-LABEL: atomic_fetch_add64:
entry:
%t1 = atomicrmw add i64* @sc64, i64 1 acquire
; X32: addl
; X32: adcl
; X32: lock
; X32: cmpxchg8b
%t2 = atomicrmw add i64* @sc64, i64 3 acquire
; X32: addl
; X32: adcl
; X32: lock
; X32: cmpxchg8b
%t3 = atomicrmw add i64* @sc64, i64 5 acquire
; X32: addl
; X32: adcl
; X32: lock
; X32: cmpxchg8b
%t4 = atomicrmw add i64* @sc64, i64 %t3 acquire
; X32: addl
; X32: adcl
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_sub64() nounwind {
; X32-LABEL: atomic_fetch_sub64:
%t1 = atomicrmw sub i64* @sc64, i64 1 acquire
; X32: addl $-1
; X32: adcl $-1
; X32: lock
; X32: cmpxchg8b
%t2 = atomicrmw sub i64* @sc64, i64 3 acquire
; X32: addl $-3
; X32: adcl $-1
; X32: lock
; X32: cmpxchg8b
%t3 = atomicrmw sub i64* @sc64, i64 5 acquire
; X32: addl $-5
; X32: adcl $-1
; X32: lock
; X32: cmpxchg8b
%t4 = atomicrmw sub i64* @sc64, i64 %t3 acquire
; X32: subl
; X32: sbbl
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_and64() nounwind {
; X32-LABEL: atomic_fetch_and64:
%t1 = atomicrmw and i64* @sc64, i64 3 acquire
; X32: andl $3
; X32-NOT: andl
; X32: lock
; X32: cmpxchg8b
%t2 = atomicrmw and i64* @sc64, i64 4294967297 acquire
; X32: andl $1
; X32: andl $1
; X32: lock
; X32: cmpxchg8b
%t3 = atomicrmw and i64* @sc64, i64 %t2 acquire
; X32: andl
; X32: andl
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_or64() nounwind {
; X32-LABEL: atomic_fetch_or64:
%t1 = atomicrmw or i64* @sc64, i64 3 acquire
; X32: orl $3
; X32-NOT: orl
; X32: lock
; X32: cmpxchg8b
%t2 = atomicrmw or i64* @sc64, i64 4294967297 acquire
; X32: orl $1
; X32: orl $1
; X32: lock
; X32: cmpxchg8b
%t3 = atomicrmw or i64* @sc64, i64 %t2 acquire
; X32: orl
; X32: orl
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_xor64() nounwind {
; X32-LABEL: atomic_fetch_xor64:
%t1 = atomicrmw xor i64* @sc64, i64 3 acquire
; X32: xorl
; X32-NOT: xorl
; X32: lock
; X32: cmpxchg8b
%t2 = atomicrmw xor i64* @sc64, i64 4294967297 acquire
; X32: xorl $1
; X32: xorl $1
; X32: lock
; X32: cmpxchg8b
%t3 = atomicrmw xor i64* @sc64, i64 %t2 acquire
; X32: xorl
; X32: xorl
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_nand64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_nand64:
%t1 = atomicrmw nand i64* @sc64, i64 %x acquire
; X32: andl
; X32: andl
; X32: notl
; X32: notl
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_max64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_max64:
%t1 = atomicrmw max i64* @sc64, i64 %x acquire
; X32: subl
; X32: subl
; X32: cmov
; X32: cmov
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_min64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_min64:
%t1 = atomicrmw min i64* @sc64, i64 %x acquire
; X32: subl
; X32: subl
; X32: cmov
; X32: cmov
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_umax64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_umax64:
%t1 = atomicrmw umax i64* @sc64, i64 %x acquire
; X32: subl
; X32: subl
; X32: cmov
; X32: cmov
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_umin64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_umin64:
%t1 = atomicrmw umin i64* @sc64, i64 %x acquire
; X32: subl
; X32: subl
; X32: cmov
; X32: cmov
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_cmpxchg64() nounwind {
; X32-LABEL: atomic_fetch_cmpxchg64:
%t1 = cmpxchg i64* @sc64, i64 0, i64 1 acquire acquire
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_store64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_store64:
store atomic i64 %x, i64* @sc64 release, align 8
; X32: lock
; X32: cmpxchg8b
ret void
; X32: ret
}
define void @atomic_fetch_swap64(i64 %x) nounwind {
; X32-LABEL: atomic_fetch_swap64:
%t1 = atomicrmw xchg i64* @sc64, i64 %x acquire
; X32: lock
; X32: xchg8b
ret void
; X32: ret
}
|
