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
|
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux"
attributes #0 = { noinline sanitize_memtag "target-features"="+mte,+neon" }
define dso_local void @Write1(i8* %p) #0 {
entry:
store i8 0, i8* %p, align 1
ret void
}
define dso_local void @Write4(i8* %p) #0 {
entry:
%0 = bitcast i8* %p to i32*
store i32 0, i32* %0, align 1
ret void
}
define dso_local void @Write4_2(i8* %p, i8* %q) #0 {
entry:
%0 = bitcast i8* %p to i32*
store i32 0, i32* %0, align 1
%1 = bitcast i8* %q to i32*
store i32 0, i32* %1, align 1
ret void
}
define dso_local void @Write8(i8* %p) #0 {
entry:
%0 = bitcast i8* %p to i64*
store i64 0, i64* %0, align 1
ret void
}
define dso_local i8* @WriteAndReturn8(i8* %p) #0 {
entry:
store i8 0, i8* %p, align 1
ret i8* %p
}
declare dso_local void @ExternalCall(i8* %p)
define dso_preemptable void @PreemptableWrite1(i8* %p) #0 {
entry:
store i8 0, i8* %p, align 1
ret void
}
define linkonce dso_local void @InterposableWrite1(i8* %p) #0 {
entry:
store i8 0, i8* %p, align 1
ret void
}
define dso_local i8* @ReturnDependent(i8* %p) #0 {
entry:
%p2 = getelementptr i8, i8* %p, i64 2
ret i8* %p2
}
; access range [2, 6)
define dso_local void @Rec0(i8* %p) #0 {
entry:
%p1 = getelementptr i8, i8* %p, i64 2
call void @Write4(i8* %p1)
ret void
}
; access range [3, 7)
define dso_local void @Rec1(i8* %p) #0 {
entry:
%p1 = getelementptr i8, i8* %p, i64 1
call void @Rec0(i8* %p1)
ret void
}
; access range [-2, 2)
define dso_local void @Rec2(i8* %p) #0 {
entry:
%p1 = getelementptr i8, i8* %p, i64 -5
call void @Rec1(i8* %p1)
ret void
}
; Recursive function that passes %acc unchanged => access range [0, 4).
define dso_local void @RecursiveNoOffset(i32* %p, i32 %size, i32* %acc) {
entry:
%cmp = icmp eq i32 %size, 0
br i1 %cmp, label %return, label %if.end
if.end:
%0 = load i32, i32* %p, align 4
%1 = load i32, i32* %acc, align 4
%add = add nsw i32 %1, %0
store i32 %add, i32* %acc, align 4
%add.ptr = getelementptr inbounds i32, i32* %p, i64 1
%sub = add nsw i32 %size, -1
tail call void @RecursiveNoOffset(i32* %add.ptr, i32 %sub, i32* %acc)
ret void
return:
ret void
}
; Recursive function that advances %acc on each iteration => access range unlimited.
define dso_local void @RecursiveWithOffset(i32 %size, i32* %acc) {
entry:
%cmp = icmp eq i32 %size, 0
br i1 %cmp, label %return, label %if.end
if.end:
store i32 0, i32* %acc, align 4
%acc2 = getelementptr inbounds i32, i32* %acc, i64 1
%sub = add nsw i32 %size, -1
tail call void @RecursiveWithOffset(i32 %sub, i32* %acc2)
ret void
return:
ret void
}
define dso_local i64* @ReturnAlloca() {
entry:
%x = alloca i64, align 4
ret i64* %x
}
|
