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
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -no-struct-path-tbaa -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s -check-prefixes=PATH,OLD-PATH
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -new-struct-path-tbaa -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s -check-prefixes=PATH,NEW-PATH
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O0 -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s -check-prefix=NO-TBAA
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -relaxed-aliasing -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s -check-prefix=NO-TBAA
// Test TBAA metadata generated by front-end.
//
// NO-TBAA-NOT: !tbaa
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef unsigned long long uint64_t;
typedef struct
{
uint16_t f16;
uint32_t f32;
uint16_t f16_2;
uint32_t f32_2;
} StructA;
typedef struct
{
uint16_t f16;
StructA a;
uint32_t f32;
} StructB;
typedef struct
{
uint16_t f16;
StructB b;
uint32_t f32;
} StructC;
typedef struct
{
uint16_t f16;
StructB b;
uint32_t f32;
uint8_t f8;
} StructD;
typedef struct
{
uint16_t f16;
uint32_t f32;
} StructS;
typedef struct
{
uint16_t f16;
uint32_t f32;
} StructS2;
uint32_t g(uint32_t *s, StructA *A, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z1g
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32:!.*]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z1g
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32:!.*]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32:!.*]]
*s = 1;
A->f32 = 4;
return *s;
}
uint32_t g2(uint32_t *s, StructA *A, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g2
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16:!.*]]
// PATH-LABEL: define{{.*}} i32 @_Z2g2
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_A_f16:!.*]]
*s = 1;
A->f16 = 4;
return *s;
}
uint32_t g3(StructA *A, StructB *B, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g3
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z2g3
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32:!.*]]
A->f32 = 1;
B->a.f32 = 4;
return A->f32;
}
uint32_t g4(StructA *A, StructB *B, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g4
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16]]
// PATH-LABEL: define{{.*}} i32 @_Z2g4
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_B_a_f16:!.*]]
A->f32 = 1;
B->a.f16 = 4;
return A->f32;
}
uint32_t g5(StructA *A, StructB *B, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g5
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z2g5
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_f32:!.*]]
A->f32 = 1;
B->f32 = 4;
return A->f32;
}
uint32_t g6(StructA *A, StructB *B, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g6
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z2g6
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32_2:!.*]]
A->f32 = 1;
B->a.f32_2 = 4;
return A->f32;
}
uint32_t g7(StructA *A, StructS *S, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g7
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z2g7
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32:!.*]]
A->f32 = 1;
S->f32 = 4;
return A->f32;
}
uint32_t g8(StructA *A, StructS *S, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g8
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16]]
// PATH-LABEL: define{{.*}} i32 @_Z2g8
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_A_f32]]
// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_S_f16:!.*]]
A->f32 = 1;
S->f16 = 4;
return A->f32;
}
uint32_t g9(StructS *S, StructS2 *S2, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z2g9
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z2g9
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S2_f32:!.*]]
S->f32 = 1;
S2->f32 = 4;
return S->f32;
}
uint32_t g10(StructS *S, StructS2 *S2, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z3g10
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_i16]]
// PATH-LABEL: define{{.*}} i32 @_Z3g10
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
// PATH: store i16 4, i16* %{{.*}}, align 4, !tbaa [[TAG_S2_f16:!.*]]
S->f32 = 1;
S2->f16 = 4;
return S->f32;
}
uint32_t g11(StructC *C, StructD *D, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z3g11
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z3g11
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_C_b_a_f32:!.*]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_D_b_a_f32:!.*]]
C->b.a.f32 = 1;
D->b.a.f32 = 4;
return C->b.a.f32;
}
uint32_t g12(StructC *C, StructD *D, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z3g12
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// TODO: differentiate the two accesses.
// PATH-LABEL: define{{.*}} i32 @_Z3g12
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_B_a_f32]]
StructB *b1 = &(C->b);
StructB *b2 = &(D->b);
// b1, b2 have different context.
b1->a.f32 = 1;
b2->a.f32 = 4;
return b1->a.f32;
}
// Make sure that zero-length bitfield works.
#define ATTR __attribute__ ((ms_struct))
struct five {
char a;
int :0; /* ignored; prior field is not a bitfield. */
char b;
char c;
} ATTR;
char g13(struct five *a, struct five *b) {
return a->b;
// CHECK-LABEL: define{{.*}} signext i8 @_Z3g13
// CHECK: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_char:!.*]]
// PATH-LABEL: define{{.*}} signext i8 @_Z3g13
// PATH: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_five_b:!.*]]
}
struct six {
char a;
int :0;
char b;
char c;
};
char g14(struct six *a, struct six *b) {
// CHECK-LABEL: define{{.*}} signext i8 @_Z3g14
// CHECK: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_char]]
// PATH-LABEL: define{{.*}} signext i8 @_Z3g14
// PATH: load i8, i8* %{{.*}}, align 1, !tbaa [[TAG_six_b:!.*]]
return a->b;
}
// Types that differ only by name may alias.
typedef StructS StructS3;
uint32_t g15(StructS *S, StructS3 *S3, uint64_t count) {
// CHECK-LABEL: define{{.*}} i32 @_Z3g15
// CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// CHECK: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_i32]]
// PATH-LABEL: define{{.*}} i32 @_Z3g15
// PATH: store i32 1, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
// PATH: store i32 4, i32* %{{.*}}, align 4, !tbaa [[TAG_S_f32]]
S->f32 = 1;
S3->f32 = 4;
return S->f32;
}
// CHECK: [[TYPE_char:!.*]] = !{!"omnipotent char", [[TAG_cxx_tbaa:!.*]],
// CHECK: [[TAG_cxx_tbaa]] = !{!"Simple C++ TBAA"}
// CHECK: [[TAG_i32]] = !{[[TYPE_i32:!.*]], [[TYPE_i32]], i64 0}
// CHECK: [[TYPE_i32]] = !{!"int", [[TYPE_char]],
// CHECK: [[TAG_i16]] = !{[[TYPE_i16:!.*]], [[TYPE_i16]], i64 0}
// CHECK: [[TYPE_i16]] = !{!"short", [[TYPE_char]],
// CHECK: [[TAG_char]] = !{[[TYPE_char]], [[TYPE_char]], i64 0}
// OLD-PATH: [[TYPE_CHAR:!.*]] = !{!"omnipotent char", !
// OLD-PATH: [[TAG_i32]] = !{[[TYPE_INT:!.*]], [[TYPE_INT]], i64 0}
// OLD-PATH: [[TYPE_INT]] = !{!"int", [[TYPE_CHAR]]
// OLD-PATH: [[TAG_A_f32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 4}
// OLD-PATH: [[TYPE_A]] = !{!"_ZTS7StructA", [[TYPE_SHORT:!.*]], i64 0, [[TYPE_INT]], i64 4, [[TYPE_SHORT]], i64 8, [[TYPE_INT]], i64 12}
// OLD-PATH: [[TYPE_SHORT:!.*]] = !{!"short", [[TYPE_CHAR]]
// OLD-PATH: [[TAG_A_f16]] = !{[[TYPE_A]], [[TYPE_SHORT]], i64 0}
// OLD-PATH: [[TAG_B_a_f32]] = !{[[TYPE_B:!.*]], [[TYPE_INT]], i64 8}
// OLD-PATH: [[TYPE_B]] = !{!"_ZTS7StructB", [[TYPE_SHORT]], i64 0, [[TYPE_A]], i64 4, [[TYPE_INT]], i64 20}
// OLD-PATH: [[TAG_B_a_f16]] = !{[[TYPE_B]], [[TYPE_SHORT]], i64 4}
// OLD-PATH: [[TAG_B_f32]] = !{[[TYPE_B]], [[TYPE_INT]], i64 20}
// OLD-PATH: [[TAG_B_a_f32_2]] = !{[[TYPE_B]], [[TYPE_INT]], i64 16}
// OLD-PATH: [[TAG_S_f32]] = !{[[TYPE_S:!.*]], [[TYPE_INT]], i64 4}
// OLD-PATH: [[TYPE_S]] = !{!"_ZTS7StructS", [[TYPE_SHORT]], i64 0, [[TYPE_INT]], i64 4}
// OLD-PATH: [[TAG_S_f16]] = !{[[TYPE_S]], [[TYPE_SHORT]], i64 0}
// OLD-PATH: [[TAG_S2_f32]] = !{[[TYPE_S2:!.*]], [[TYPE_INT]], i64 4}
// OLD-PATH: [[TYPE_S2]] = !{!"_ZTS8StructS2", [[TYPE_SHORT]], i64 0, [[TYPE_INT]], i64 4}
// OLD-PATH: [[TAG_S2_f16]] = !{[[TYPE_S2]], [[TYPE_SHORT]], i64 0}
// OLD-PATH: [[TAG_C_b_a_f32]] = !{[[TYPE_C:!.*]], [[TYPE_INT]], i64 12}
// OLD-PATH: [[TYPE_C]] = !{!"_ZTS7StructC", [[TYPE_SHORT]], i64 0, [[TYPE_B]], i64 4, [[TYPE_INT]], i64 28}
// OLD-PATH: [[TAG_D_b_a_f32]] = !{[[TYPE_D:!.*]], [[TYPE_INT]], i64 12}
// OLD-PATH: [[TYPE_D]] = !{!"_ZTS7StructD", [[TYPE_SHORT]], i64 0, [[TYPE_B]], i64 4, [[TYPE_INT]], i64 28, [[TYPE_CHAR]], i64 32}
// OLD-PATH: [[TAG_five_b]] = !{[[TYPE_five:!.*]], [[TYPE_CHAR]], i64 1}
// OLD-PATH: [[TYPE_five]] = !{!"_ZTS4five", [[TYPE_CHAR]], i64 0, [[TYPE_CHAR]], i64 1, [[TYPE_CHAR]], i64 2}
// OLD-PATH: [[TAG_six_b]] = !{[[TYPE_six:!.*]], [[TYPE_CHAR]], i64 4}
// OLD-PATH: [[TYPE_six]] = !{!"_ZTS3six", [[TYPE_CHAR]], i64 0, [[TYPE_CHAR]], i64 4, [[TYPE_CHAR]], i64 5}
// NEW-PATH-DAG: [[ROOT:!.*]] = !{!"Simple C++ TBAA"}
// NEW-PATH-DAG: [[TYPE_char:!.*]] = !{[[ROOT]], i64 1, !"omnipotent char"}
// NEW-PATH-DAG: [[TYPE_short:!.*]] = !{[[TYPE_char]], i64 2, !"short"}
// NEW-PATH-DAG: [[TYPE_int:!.*]] = !{[[TYPE_char]], i64 4, !"int"}
// NEW-PATH-DAG: [[TAG_i32:!.*]] = !{[[TYPE_int]], [[TYPE_int]], i64 0, i64 4}
// NEW-PATH-DAG: [[TYPE_A:!.*]] = !{[[TYPE_char]], i64 16, !"_ZTS7StructA", [[TYPE_short]], i64 0, i64 2, [[TYPE_int]], i64 4, i64 4, !12, i64 8, i64 2, [[TYPE_int]], i64 12, i64 4}
// NEW-PATH-DAG: [[TAG_A_f16]] = !{[[TYPE_A]], [[TYPE_short]], i64 0, i64 2}
// NEW-PATH-DAG: [[TAG_A_f32]] = !{[[TYPE_A]], [[TYPE_int]], i64 4, i64 4}
// NEW-PATH-DAG: [[TYPE_B:!.*]] = !{[[TYPE_char]], i64 24, !"_ZTS7StructB", [[TYPE_short]], i64 0, i64 2, [[TYPE_A]], i64 4, i64 16, [[TYPE_int]], i64 20, i64 4}
// NEW-PATH-DAG: [[TAG_B_a_f16]] = !{[[TYPE_B]], [[TYPE_short]], i64 4, i64 2}
// NEW-PATH-DAG: [[TAG_B_a_f32]] = !{[[TYPE_B]], [[TYPE_int]], i64 8, i64 4}
// NEW-PATH-DAG: [[TAG_B_f32]] = !{[[TYPE_B]], [[TYPE_int]], i64 20, i64 4}
// NEW-PATH-DAG: [[TAG_B_a_f32_2]] = !{[[TYPE_B]], [[TYPE_int]], i64 16, i64 4}
// NEW-PATH-DAG: [[TYPE_S:!.*]] = !{[[TYPE_char]], i64 8, !"_ZTS7StructS", [[TYPE_short]], i64 0, i64 2, [[TYPE_int]], i64 4, i64 4}
// NEW-PATH-DAG: [[TAG_S_f16]] = !{[[TYPE_S]], [[TYPE_short]], i64 0, i64 2}
// NEW-PATH-DAG: [[TAG_S_f32]] = !{[[TYPE_S]], [[TYPE_int]], i64 4, i64 4}
// NEW-PATH-DAG: [[TYPE_S2:!.*]] = !{[[TYPE_char]], i64 8, !"_ZTS8StructS2", [[TYPE_short]], i64 0, i64 2, [[TYPE_int]], i64 4, i64 4}
// NEW-PATH-DAG: [[TAG_S2_f16]] = !{[[TYPE_S2]], [[TYPE_short]], i64 0, i64 2}
// NEW-PATH-DAG: [[TAG_S2_f32]] = !{[[TYPE_S2]], [[TYPE_int]], i64 4, i64 4}
// NEW-PATH-DAG: [[TYPE_C:!.*]] = !{[[TYPE_char]], i64 32, !"_ZTS7StructC", [[TYPE_short]], i64 0, i64 2, [[TYPE_B]], i64 4, i64 24, [[TYPE_int]], i64 28, i64 4}
// NEW-PATH-DAG: [[TAG_C_b_a_f32]] = !{[[TYPE_C]], [[TYPE_int]], i64 12, i64 4}
// NEW-PATH-DAG: [[TYPE_D:!.*]] = !{[[TYPE_char]], i64 36, !"_ZTS7StructD", [[TYPE_short]], i64 0, i64 2, [[TYPE_B]], i64 4, i64 24, [[TYPE_int]], i64 28, i64 4, [[TYPE_char]], i64 32, i64 1}
// NEW-PATH-DAG: [[TAG_D_b_a_f32]] = !{[[TYPE_D]], [[TYPE_int]], i64 12, i64 4}
// NEW-PATH-DAG: [[TYPE_five:!.*]] = !{[[TYPE_char]], i64 3, !"_ZTS4five", [[TYPE_char]], i64 0, i64 1, [[TYPE_char]], i64 1, i64 1, [[TYPE_char]], i64 2, i64 1}
// NEW-PATH-DAG: [[TAG_five_b]] = !{[[TYPE_five]], [[TYPE_char]], i64 1, i64 1}
// NEW-PATH-DAG: [[TYPE_six:!.*]] = !{[[TYPE_char]], i64 6, !"_ZTS3six", [[TYPE_char]], i64 0, i64 1, [[TYPE_char]], i64 4, i64 1, [[TYPE_char]], i64 5, i64 1}
// NEW-PATH-DAG: [[TAG_six_b]] = !{[[TYPE_six]], [[TYPE_char]], i64 4, i64 1}
|
