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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=lower-constant-intrinsics -S < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
declare i64 @llvm.objectsize.i64(ptr, i1, i1, i1) nounwind readonly
declare i64 @llvm.objectsize.i64.p1(ptr addrspace(1), i1, i1, i1) nounwind readonly
declare void @llvm.trap() nounwind
; objectsize should fold to a constant, which causes the branch to fold to an
; uncond branch.
define i32 @test1(ptr %ptr) nounwind ssp noredzone align 2 {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[T:%.*]]
; CHECK: T:
; CHECK-NEXT: ret i32 4
;
entry:
%0 = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 false, i1 false, i1 false)
%1 = icmp ugt i64 %0, 3
br i1 %1, label %T, label %trap
trap: ; preds = %0, %entry
tail call void @llvm.trap() noreturn nounwind
unreachable
T:
ret i32 4
}
define i64 @test_objectsize_null_flag(ptr %ptr) {
; CHECK-LABEL: @test_objectsize_null_flag(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 -1
;
entry:
%0 = tail call i64 @llvm.objectsize.i64(ptr null, i1 false, i1 true, i1 false)
ret i64 %0
}
define i64 @test_objectsize_null_flag_min(ptr %ptr) {
; CHECK-LABEL: @test_objectsize_null_flag_min(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
%0 = tail call i64 @llvm.objectsize.i64(ptr null, i1 true, i1 true, i1 false)
ret i64 %0
}
; Test foldable null pointers because we evaluate them with non-exact modes in
; CodeGenPrepare.
define i64 @test_objectsize_null_flag_noas0() {
; CHECK-LABEL: @test_objectsize_null_flag_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 -1
;
entry:
%0 = tail call i64 @llvm.objectsize.i64.p1(ptr addrspace(1) null, i1 false,
i1 true, i1 false)
ret i64 %0
}
define i64 @test_objectsize_null_flag_min_noas0() {
; CHECK-LABEL: @test_objectsize_null_flag_min_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
%0 = tail call i64 @llvm.objectsize.i64.p1(ptr addrspace(1) null, i1 true,
i1 true, i1 false)
ret i64 %0
}
define i64 @test_objectsize_null_known_flag_noas0() {
; CHECK-LABEL: @test_objectsize_null_known_flag_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 -1
;
entry:
%0 = tail call i64 @llvm.objectsize.i64.p1(ptr addrspace(1) null, i1 false,
i1 false, i1 false)
ret i64 %0
}
define i64 @test_objectsize_null_known_flag_min_noas0() {
; CHECK-LABEL: @test_objectsize_null_known_flag_min_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
%0 = tail call i64 @llvm.objectsize.i64.p1(ptr addrspace(1) null, i1 true,
i1 false, i1 false)
ret i64 %0
}
define i64 @test_objectsize_byval_arg(ptr byval([42 x i8]) %ptr) {
; CHECK-LABEL: @test_objectsize_byval_arg(
; CHECK-NEXT: ret i64 42
;
%size = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 true, i1 false, i1 false)
ret i64 %size
}
define i64 @test_objectsize_byref_arg(ptr byref([42 x i8]) %ptr) {
; CHECK-LABEL: @test_objectsize_byref_arg(
; CHECK-NEXT: ret i64 42
;
%size = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 true, i1 false, i1 false)
ret i64 %size
}
; https://llvm.org/PR50023
; The alloca operand type may not match pointer type size.
define i64 @vla_pointer_size_mismatch(i42 %x) {
; CHECK-LABEL: @vla_pointer_size_mismatch(
; CHECK-NEXT: [[TMP1:%.*]] = zext i42 [[X:%.*]] to i64
; CHECK-NEXT: [[TMP2:%.*]] = mul i64 1, [[TMP1]]
; CHECK-NEXT: [[A:%.*]] = alloca i8, i42 [[X]], align 1
; CHECK-NEXT: [[G1:%.*]] = getelementptr i8, ptr [[A]], i8 17
; CHECK-NEXT: [[TMP3:%.*]] = sub i64 [[TMP2]], 17
; CHECK-NEXT: [[TMP4:%.*]] = icmp ult i64 [[TMP2]], 17
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP4]], i64 0, i64 [[TMP3]]
; CHECK-NEXT: [[TMP6:%.*]] = icmp ne i64 [[TMP5]], -1
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP6]])
; CHECK-NEXT: ret i64 [[TMP5]]
;
%A = alloca i8, i42 %x, align 1
%G1 = getelementptr i8, ptr %A, i8 17
%objsize = call i64 @llvm.objectsize.i64(ptr %G1, i1 false, i1 true, i1 true)
ret i64 %objsize
}
declare ptr @malloc(i64) allocsize(0)
define i64 @test_objectsize_malloc() {
; CHECK-LABEL: @test_objectsize_malloc(
; CHECK-NEXT: [[PTR:%.*]] = call ptr @malloc(i64 16)
; CHECK-NEXT: ret i64 16
;
%ptr = call ptr @malloc(i64 16)
%objsize = call i64 @llvm.objectsize.i64(ptr %ptr, i1 false, i1 true, i1 true)
ret i64 %objsize
}
@gv_weak = weak global i64 zeroinitializer, align 16
define i32 @promote_with_objectsize_min_false() {
; CHECK-LABEL: @promote_with_objectsize_min_false(
; CHECK-NEXT: ret i32 -1
;
%size = call i32 @llvm.objectsize.i32.p0(ptr @gv_weak, i1 false, i1 false, i1 false)
ret i32 %size
}
define i32 @promote_with_objectsize_min_true() {
; CHECK-LABEL: @promote_with_objectsize_min_true(
; CHECK-NEXT: ret i32 8
;
%size = call i32 @llvm.objectsize.i32.p0(ptr @gv_weak, i1 true, i1 false, i1 false)
ret i32 %size
}
@gv_extern = extern_weak global i64, align 16
define i32 @promote_with_objectsize_nullunknown_false() {
; CHECK-LABEL: @promote_with_objectsize_nullunknown_false(
; CHECK-NEXT: ret i32 0
;
%size = call i32 @llvm.objectsize.i32.p0(ptr @gv_extern, i1 true, i1 false, i1 false)
ret i32 %size
}
define i32 @promote_with_objectsize_nullunknown_true() {
; CHECK-LABEL: @promote_with_objectsize_nullunknown_true(
; CHECK-NEXT: ret i32 0
;
%size = call i32 @llvm.objectsize.i32.p0(ptr @gv_extern, i1 true, i1 true, i1 false)
ret i32 %size
}
define i64 @out_of_bound_gep() {
; CHECK-LABEL: @out_of_bound_gep(
; CHECK-NEXT: [[OBJ:%.*]] = alloca i8, i32 4, align 1
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i8 8
; CHECK-NEXT: ret i64 0
;
%obj = alloca i8, i32 4
%slide = getelementptr i8, ptr %obj, i8 8
%objsize = call i64 @llvm.objectsize.i64(ptr %slide, i1 false, i1 false, i1 false)
ret i64 %objsize
}
define i64 @wrapping_gep(i1 %c) {
; CHECK-LABEL: @wrapping_gep(
; CHECK-NEXT: [[OBJ:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i64 -9223372036854775807
; CHECK-NEXT: [[SLIDE_BIS:%.*]] = getelementptr i8, ptr [[SLIDE]], i64 -9223372036854775808
; CHECK-NEXT: ret i64 3
;
%obj = alloca i8, i64 4
%slide = getelementptr i8, ptr %obj, i64 9223372036854775809
%slide.bis = getelementptr i8, ptr %slide, i64 9223372036854775808
%objsize = call i64 @llvm.objectsize.i64(ptr %slide.bis, i1 false, i1 false, i1 false)
ret i64 %objsize
}
define i64 @wrapping_gep_neg(i1 %c) {
; CHECK-LABEL: @wrapping_gep_neg(
; CHECK-NEXT: [[OBJ:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i64 9223372036854775807
; CHECK-NEXT: [[SLIDE_BIS:%.*]] = getelementptr i8, ptr [[SLIDE]], i64 9223372036854775807
; CHECK-NEXT: ret i64 -1
;
%obj = alloca i8, i64 4
%slide = getelementptr i8, ptr %obj, i64 9223372036854775807
%slide.bis = getelementptr i8, ptr %slide, i64 9223372036854775807
%objsize = call i64 @llvm.objectsize.i64(ptr %slide.bis, i1 false, i1 false, i1 false)
ret i64 %objsize
}
define i64 @wrapping_gep_large_alloc(i1 %c) {
; CHECK-LABEL: @wrapping_gep_large_alloc(
; CHECK-NEXT: [[OBJ:%.*]] = alloca i8, i64 9223372036854775807, align 1
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i64 9223372036854775807
; CHECK-NEXT: [[SLIDE_BIS:%.*]] = getelementptr i8, ptr [[SLIDE]], i64 3
; CHECK-NEXT: [[SLIDE_TER:%.*]] = getelementptr i8, ptr [[SLIDE_BIS]], i64 -4
; CHECK-NEXT: ret i64 1
;
%obj = alloca i8, i64 9223372036854775807
%slide = getelementptr i8, ptr %obj, i64 9223372036854775807
%slide.bis = getelementptr i8, ptr %slide, i64 3
%slide.ter = getelementptr i8, ptr %slide.bis, i64 -4
%objsize = call i64 @llvm.objectsize.i64(ptr %slide.ter, i1 false, i1 false, i1 false)
ret i64 %objsize
}
; We don't analyze allocations larger than platform's ptrdiff_t
define i64 @large_alloca() {
; CHECK-LABEL: @large_alloca(
; CHECK-NEXT: [[OBJ:%.*]] = alloca i8, i64 -9223372036854775808, align 1
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i64 9223372036854775807
; CHECK-NEXT: ret i64 -1
;
%obj = alloca i8, i64 9223372036854775808
%slide = getelementptr i8, ptr %obj, i64 9223372036854775807
%objsize = call i64 @llvm.objectsize.i64(ptr %slide, i1 false, i1 false, i1 false)
ret i64 %objsize
}
; We don't analyze allocations larger than platform's ptrdiff_t
define i64 @large_malloc() {
; CHECK-LABEL: @large_malloc(
; CHECK-NEXT: [[OBJ:%.*]] = call ptr @malloc(i64 -9223372036854775808)
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i64 9223372036854775807
; CHECK-NEXT: ret i64 -1
;
%obj = call ptr @malloc(i64 9223372036854775808)
%slide = getelementptr i8, ptr %obj, i64 9223372036854775807
%objsize = call i64 @llvm.objectsize.i64(ptr %slide, i1 false, i1 false, i1 false)
ret i64 %objsize
}
define i64 @out_of_bound_negative_gep(i1 %c) {
; CHECK-LABEL: @out_of_bound_negative_gep(
; CHECK-NEXT: [[OBJ:%.*]] = alloca i8, i32 4, align 1
; CHECK-NEXT: [[SLIDE:%.*]] = getelementptr i8, ptr [[OBJ]], i8 -8
; CHECK-NEXT: ret i64 -1
;
%obj = alloca i8, i32 4
%slide = getelementptr i8, ptr %obj, i8 -8
%objsize = call i64 @llvm.objectsize.i64(ptr %slide, i1 false, i1 false, i1 false)
ret i64 %objsize
}
declare i32 @llvm.objectsize.i32.p0(ptr, i1, i1, i1)
|
