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
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
|
// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,LINUX
// RUN: %clang_cc1 -triple x86_64-windows-pc -fms-compatibility -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,WINDOWS
#ifdef _WIN64
#define ATTR(X) __declspec(X)
#else
#define ATTR(X) __attribute__((X))
#endif // _MSC_VER
// Each version should have an IFunc and an alias.
// LINUX: @SingleVersion = weak_odr alias void (), ptr @SingleVersion.ifunc
// LINUX: @TwoVersions = weak_odr alias void (), ptr @TwoVersions.ifunc
// LINUX: @OrderDispatchUsageSpecific = weak_odr alias void (), ptr @OrderDispatchUsageSpecific.ifunc
// LINUX: @TwoVersionsSameAttr = weak_odr alias void (), ptr @TwoVersionsSameAttr.ifunc
// LINUX: @ThreeVersionsSameAttr = weak_odr alias void (), ptr @ThreeVersionsSameAttr.ifunc
// LINUX: @OrderSpecificUsageDispatch = weak_odr alias void (), ptr @OrderSpecificUsageDispatch.ifunc
// LINUX: @NoSpecifics = weak_odr alias void (), ptr @NoSpecifics.ifunc
// LINUX: @HasGeneric = weak_odr alias void (), ptr @HasGeneric.ifunc
// LINUX: @HasParams = weak_odr alias void (i32, double), ptr @HasParams.ifunc
// LINUX: @HasParamsAndReturn = weak_odr alias i32 (i32, double), ptr @HasParamsAndReturn.ifunc
// LINUX: @GenericAndPentium = weak_odr alias i32 (i32, double), ptr @GenericAndPentium.ifunc
// LINUX: @DispatchFirst = weak_odr alias i32 (), ptr @DispatchFirst.ifunc
// LINUX: @SingleVersion.ifunc = weak_odr ifunc void (), ptr @SingleVersion.resolver
// LINUX: @TwoVersions.ifunc = weak_odr ifunc void (), ptr @TwoVersions.resolver
// LINUX: @OrderDispatchUsageSpecific.ifunc = weak_odr ifunc void (), ptr @OrderDispatchUsageSpecific.resolver
// LINUX: @TwoVersionsSameAttr.ifunc = weak_odr ifunc void (), ptr @TwoVersionsSameAttr.resolver
// LINUX: @ThreeVersionsSameAttr.ifunc = weak_odr ifunc void (), ptr @ThreeVersionsSameAttr.resolver
// LINUX: @OrderSpecificUsageDispatch.ifunc = weak_odr ifunc void (), ptr @OrderSpecificUsageDispatch.resolver
// LINUX: @NoSpecifics.ifunc = weak_odr ifunc void (), ptr @NoSpecifics.resolver
// LINUX: @HasGeneric.ifunc = weak_odr ifunc void (), ptr @HasGeneric.resolver
// LINUX: @HasParams.ifunc = weak_odr ifunc void (i32, double), ptr @HasParams.resolver
// LINUX: @HasParamsAndReturn.ifunc = weak_odr ifunc i32 (i32, double), ptr @HasParamsAndReturn.resolver
// LINUX: @GenericAndPentium.ifunc = weak_odr ifunc i32 (i32, double), ptr @GenericAndPentium.resolver
// LINUX: @DispatchFirst.ifunc = weak_odr ifunc i32 (), ptr @DispatchFirst.resolver
ATTR(cpu_specific(ivybridge))
void SingleVersion(void){}
// LINUX: define{{.*}} void @SingleVersion.S() #[[S:[0-9]+]]
// WINDOWS: define dso_local void @SingleVersion.S() #[[S:[0-9]+]]
ATTR(cpu_dispatch(ivybridge))
void SingleVersion(void);
// LINUX: define weak_odr ptr @SingleVersion.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @SingleVersion.S
// LINUX: call void @llvm.trap
// LINUX: unreachable
// WINDOWS: define weak_odr dso_local void @SingleVersion() comdat
// WINDOWS: call void @__cpu_indicator_init()
// WINDOWS: call void @SingleVersion.S()
// WINDOWS-NEXT: ret void
// WINDOWS: call void @llvm.trap
// WINDOWS: unreachable
ATTR(cpu_specific(ivybridge))
void NotCalled(void){}
// LINUX: define{{.*}} void @NotCalled.S() #[[S]]
// WINDOWS: define dso_local void @NotCalled.S() #[[S:[0-9]+]]
// Done before any of the implementations. Also has an undecorated forward
// declaration.
void TwoVersions(void);
ATTR(cpu_dispatch(ivybridge, knl))
void TwoVersions(void);
// LINUX: define weak_odr ptr @TwoVersions.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @TwoVersions.Z
// LINUX: ret ptr @TwoVersions.S
// LINUX: call void @llvm.trap
// LINUX: unreachable
// WINDOWS: define weak_odr dso_local void @TwoVersions() comdat
// WINDOWS: call void @__cpu_indicator_init()
// WINDOWS: call void @TwoVersions.Z()
// WINDOWS-NEXT: ret void
// WINDOWS: call void @TwoVersions.S()
// WINDOWS-NEXT: ret void
// WINDOWS: call void @llvm.trap
// WINDOWS: unreachable
ATTR(cpu_specific(ivybridge))
void TwoVersions(void){}
// CHECK: define {{.*}}void @TwoVersions.S() #[[S]]
ATTR(cpu_specific(knl))
void TwoVersions(void){}
// CHECK: define {{.*}}void @TwoVersions.Z() #[[K:[0-9]+]]
ATTR(cpu_specific(ivybridge, knl))
void TwoVersionsSameAttr(void){}
// CHECK: define {{.*}}void @TwoVersionsSameAttr.S() #[[S]]
// CHECK: define {{.*}}void @TwoVersionsSameAttr.Z() #[[K]]
ATTR(cpu_specific(atom, ivybridge, knl))
void ThreeVersionsSameAttr(void){}
// CHECK: define {{.*}}void @ThreeVersionsSameAttr.O() #[[O:[0-9]+]]
// CHECK: define {{.*}}void @ThreeVersionsSameAttr.S() #[[S]]
// CHECK: define {{.*}}void @ThreeVersionsSameAttr.Z() #[[K]]
ATTR(cpu_specific(knl))
void CpuSpecificNoDispatch(void) {}
// CHECK: define {{.*}}void @CpuSpecificNoDispatch.Z() #[[K:[0-9]+]]
ATTR(cpu_dispatch(knl))
void OrderDispatchUsageSpecific(void);
// LINUX: define weak_odr ptr @OrderDispatchUsageSpecific.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @OrderDispatchUsageSpecific.Z
// LINUX: call void @llvm.trap
// LINUX: unreachable
// WINDOWS: define weak_odr dso_local void @OrderDispatchUsageSpecific() comdat
// WINDOWS: call void @__cpu_indicator_init()
// WINDOWS: call void @OrderDispatchUsageSpecific.Z()
// WINDOWS-NEXT: ret void
// WINDOWS: call void @llvm.trap
// WINDOWS: unreachable
// CHECK: define {{.*}}void @OrderDispatchUsageSpecific.Z()
ATTR(cpu_specific(knl))
void OrderSpecificUsageDispatch(void) {}
// CHECK: define {{.*}}void @OrderSpecificUsageDispatch.Z() #[[K:[0-9]+]]
void usages(void) {
SingleVersion();
// LINUX: @SingleVersion.ifunc()
// WINDOWS: @SingleVersion()
TwoVersions();
// LINUX: @TwoVersions.ifunc()
// WINDOWS: @TwoVersions()
TwoVersionsSameAttr();
// LINUX: @TwoVersionsSameAttr.ifunc()
// WINDOWS: @TwoVersionsSameAttr()
ThreeVersionsSameAttr();
// LINUX: @ThreeVersionsSameAttr.ifunc()
// WINDOWS: @ThreeVersionsSameAttr()
CpuSpecificNoDispatch();
// LINUX: @CpuSpecificNoDispatch.ifunc()
// WINDOWS: @CpuSpecificNoDispatch()
OrderDispatchUsageSpecific();
// LINUX: @OrderDispatchUsageSpecific.ifunc()
// WINDOWS: @OrderDispatchUsageSpecific()
OrderSpecificUsageDispatch();
// LINUX: @OrderSpecificUsageDispatch.ifunc()
// WINDOWS: @OrderSpecificUsageDispatch()
}
// LINUX: declare void @CpuSpecificNoDispatch.ifunc()
// has an extra config to emit!
ATTR(cpu_dispatch(ivybridge, knl, atom))
void TwoVersionsSameAttr(void);
// LINUX: define weak_odr ptr @TwoVersionsSameAttr.resolver()
// LINUX: ret ptr @TwoVersionsSameAttr.Z
// LINUX: ret ptr @TwoVersionsSameAttr.S
// LINUX: ret ptr @TwoVersionsSameAttr.O
// LINUX: call void @llvm.trap
// LINUX: unreachable
// WINDOWS: define weak_odr dso_local void @TwoVersionsSameAttr() comdat
// WINDOWS: call void @TwoVersionsSameAttr.Z
// WINDOWS-NEXT: ret void
// WINDOWS: call void @TwoVersionsSameAttr.S
// WINDOWS-NEXT: ret void
// WINDOWS: call void @TwoVersionsSameAttr.O
// WINDOWS-NEXT: ret void
// WINDOWS: call void @llvm.trap
// WINDOWS: unreachable
ATTR(cpu_dispatch(atom, ivybridge, knl))
void ThreeVersionsSameAttr(void){}
// LINUX: define weak_odr ptr @ThreeVersionsSameAttr.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @ThreeVersionsSameAttr.Z
// LINUX: ret ptr @ThreeVersionsSameAttr.S
// LINUX: ret ptr @ThreeVersionsSameAttr.O
// LINUX: call void @llvm.trap
// LINUX: unreachable
// WINDOWS: define weak_odr dso_local void @ThreeVersionsSameAttr() comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: call void @ThreeVersionsSameAttr.Z
// WINDOWS-NEXT: ret void
// WINDOWS: call void @ThreeVersionsSameAttr.S
// WINDOWS-NEXT: ret void
// WINDOWS: call void @ThreeVersionsSameAttr.O
// WINDOWS-NEXT: ret void
// WINDOWS: call void @llvm.trap
// WINDOWS: unreachable
ATTR(cpu_dispatch(knl))
void OrderSpecificUsageDispatch(void);
// LINUX: define weak_odr ptr @OrderSpecificUsageDispatch.resolver()
// LINUX: ret ptr @OrderSpecificUsageDispatch.Z
// WINDOWS: define weak_odr dso_local void @OrderSpecificUsageDispatch() comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: call void @OrderSpecificUsageDispatch.Z
// WINDOWS-NEXT: ret void
// No Cpu Specific options.
ATTR(cpu_dispatch(atom, ivybridge, knl))
void NoSpecifics(void);
// LINUX: define weak_odr ptr @NoSpecifics.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @NoSpecifics.Z
// LINUX: ret ptr @NoSpecifics.S
// LINUX: ret ptr @NoSpecifics.O
// LINUX: call void @llvm.trap
// LINUX: unreachable
// WINDOWS: define weak_odr dso_local void @NoSpecifics() comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: call void @NoSpecifics.Z
// WINDOWS-NEXT: ret void
// WINDOWS: call void @NoSpecifics.S
// WINDOWS-NEXT: ret void
// WINDOWS: call void @NoSpecifics.O
// WINDOWS-NEXT: ret void
// WINDOWS: call void @llvm.trap
// WINDOWS: unreachable
ATTR(cpu_dispatch(atom, generic, ivybridge, knl))
void HasGeneric(void);
// LINUX: define weak_odr ptr @HasGeneric.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @HasGeneric.Z
// LINUX: ret ptr @HasGeneric.S
// LINUX: ret ptr @HasGeneric.O
// LINUX: ret ptr @HasGeneric.A
// LINUX-NOT: call void @llvm.trap
// WINDOWS: define weak_odr dso_local void @HasGeneric() comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: call void @HasGeneric.Z
// WINDOWS-NEXT: ret void
// WINDOWS: call void @HasGeneric.S
// WINDOWS-NEXT: ret void
// WINDOWS: call void @HasGeneric.O
// WINDOWS-NEXT: ret void
// WINDOWS: call void @HasGeneric.A
// WINDOWS-NEXT: ret void
// WINDOWS-NOT: call void @llvm.trap
ATTR(cpu_dispatch(atom, generic, ivybridge, knl))
void HasParams(int i, double d);
// LINUX: define weak_odr ptr @HasParams.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @HasParams.Z
// LINUX: ret ptr @HasParams.S
// LINUX: ret ptr @HasParams.O
// LINUX: ret ptr @HasParams.A
// LINUX-NOT: call void @llvm.trap
// WINDOWS: define weak_odr dso_local void @HasParams(i32 %0, double %1) comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: call void @HasParams.Z(i32 %0, double %1)
// WINDOWS-NEXT: ret void
// WINDOWS: call void @HasParams.S(i32 %0, double %1)
// WINDOWS-NEXT: ret void
// WINDOWS: call void @HasParams.O(i32 %0, double %1)
// WINDOWS-NEXT: ret void
// WINDOWS: call void @HasParams.A(i32 %0, double %1)
// WINDOWS-NEXT: ret void
// WINDOWS-NOT: call void @llvm.trap
ATTR(cpu_dispatch(atom, generic, ivybridge, knl))
int HasParamsAndReturn(int i, double d);
// LINUX: define weak_odr ptr @HasParamsAndReturn.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @HasParamsAndReturn.Z
// LINUX: ret ptr @HasParamsAndReturn.S
// LINUX: ret ptr @HasParamsAndReturn.O
// LINUX: ret ptr @HasParamsAndReturn.A
// LINUX-NOT: call void @llvm.trap
// WINDOWS: define weak_odr dso_local i32 @HasParamsAndReturn(i32 %0, double %1) comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: %[[RET:.+]] = musttail call i32 @HasParamsAndReturn.Z(i32 %0, double %1)
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS: %[[RET:.+]] = musttail call i32 @HasParamsAndReturn.S(i32 %0, double %1)
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS: %[[RET:.+]] = musttail call i32 @HasParamsAndReturn.O(i32 %0, double %1)
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS: %[[RET:.+]] = musttail call i32 @HasParamsAndReturn.A(i32 %0, double %1)
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS-NOT: call void @llvm.trap
ATTR(cpu_dispatch(atom, generic, pentium))
int GenericAndPentium(int i, double d);
// LINUX: define weak_odr ptr @GenericAndPentium.resolver()
// LINUX: call void @__cpu_indicator_init
// LINUX: ret ptr @GenericAndPentium.O
// LINUX: ret ptr @GenericAndPentium.B
// LINUX-NOT: ret ptr @GenericAndPentium.A
// LINUX-NOT: call void @llvm.trap
// WINDOWS: define weak_odr dso_local i32 @GenericAndPentium(i32 %0, double %1) comdat
// WINDOWS: call void @__cpu_indicator_init
// WINDOWS: %[[RET:.+]] = musttail call i32 @GenericAndPentium.O(i32 %0, double %1)
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS: %[[RET:.+]] = musttail call i32 @GenericAndPentium.B(i32 %0, double %1)
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS-NOT: call i32 @GenericAndPentium.A
// WINDOWS-NOT: call void @llvm.trap
ATTR(cpu_dispatch(atom, pentium))
int DispatchFirst(void);
// LINUX: define weak_odr ptr @DispatchFirst.resolver
// LINUX: ret ptr @DispatchFirst.O
// LINUX: ret ptr @DispatchFirst.B
// WINDOWS: define weak_odr dso_local i32 @DispatchFirst() comdat
// WINDOWS: %[[RET:.+]] = musttail call i32 @DispatchFirst.O()
// WINDOWS-NEXT: ret i32 %[[RET]]
// WINDOWS: %[[RET:.+]] = musttail call i32 @DispatchFirst.B()
// WINDOWS-NEXT: ret i32 %[[RET]]
ATTR(cpu_specific(atom))
int DispatchFirst(void) {return 0;}
// LINUX: define{{.*}} i32 @DispatchFirst.O
// LINUX: ret i32 0
// WINDOWS: define dso_local i32 @DispatchFirst.O()
// WINDOWS: ret i32 0
ATTR(cpu_specific(pentium))
int DispatchFirst(void) {return 1;}
// LINUX: define{{.*}} i32 @DispatchFirst.B
// LINUX: ret i32 1
// WINDOWS: define dso_local i32 @DispatchFirst.B
// WINDOWS: ret i32 1
ATTR(cpu_specific(knl))
void OrderDispatchUsageSpecific(void) {}
// CHECK: attributes #[[S]] = {{.*}}"target-features"="+avx,+cmov,+crc32,+cx8,+f16c,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave"
// CHECK-SAME: "tune-cpu"="ivybridge"
// CHECK: attributes #[[K]] = {{.*}}"target-features"="+adx,+avx,+avx2,+avx512cd,+avx512er,+avx512f,+avx512pf,+bmi,+cmov,+crc32,+cx8,+f16c,+fma,+lzcnt,+mmx,+movbe,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave"
// CHECK-SAME: "tune-cpu"="knl"
// CHECK: attributes #[[O]] = {{.*}}"target-features"="+cmov,+cx8,+mmx,+movbe,+sse,+sse2,+sse3,+ssse3,+x87"
// CHECK-SAME: "tune-cpu"="atom"
|
