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
|
; RUN: opt < %s -tsan -S | FileCheck --check-prefixes=CHECK,CHECK-OPT %s
; RUN: opt < %s -tsan -tsan-instrument-read-before-write -S | FileCheck %s --check-prefixes=CHECK,CHECK-UNOPT
; RUN: opt < %s -tsan -tsan-compound-read-before-write -S | FileCheck %s --check-prefixes=CHECK,CHECK-COMPOUND
; RUN: opt < %s -tsan -tsan-distinguish-volatile -tsan-compound-read-before-write -S | FileCheck %s --check-prefixes=CHECK,CHECK-COMPOUND-VOLATILE
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-S128"
define void @IncrementMe(i32* nocapture %ptr) nounwind uwtable sanitize_thread {
entry:
%0 = load i32, i32* %ptr, align 4
%inc = add nsw i32 %0, 1
store i32 %inc, i32* %ptr, align 4
ret void
}
; CHECK-LABEL: define void @IncrementMe
; CHECK-OPT-NOT: __tsan_read4
; CHECK-COMPOUND-NOT: __tsan_read4
; CHECK-UNOPT: __tsan_read4
; CHECK-OPT: __tsan_write4
; CHECK-UNOPT: __tsan_write4
; CHECK-COMPOUND: __tsan_read_write4
; CHECK: ret void
define void @IncrementMeWithCallInBetween(i32* nocapture %ptr) nounwind uwtable sanitize_thread {
entry:
%0 = load i32, i32* %ptr, align 4
%inc = add nsw i32 %0, 1
call void @foo()
store i32 %inc, i32* %ptr, align 4
ret void
}
; CHECK-LABEL: define void @IncrementMeWithCallInBetween
; CHECK: __tsan_read4
; CHECK: __tsan_write4
; CHECK: ret void
declare void @foo()
define void @VolatileLoad(i32* nocapture %ptr) nounwind uwtable sanitize_thread {
entry:
%0 = load volatile i32, i32* %ptr, align 4
%inc = add nsw i32 %0, 1
store i32 %inc, i32* %ptr, align 4
ret void
}
; CHECK-LABEL: define void @VolatileLoad
; CHECK-COMPOUND-NOT: __tsan_read4
; CHECK-COMPOUND-VOLATILE: __tsan_volatile_read4
; CHECK-COMPOUND: __tsan_read_write4
; CHECK-COMPOUND-VOLATILE: __tsan_write4
; CHECK: ret void
define void @VolatileStore(i32* nocapture %ptr) nounwind uwtable sanitize_thread {
entry:
%0 = load i32, i32* %ptr, align 4
%inc = add nsw i32 %0, 1
store volatile i32 %inc, i32* %ptr, align 4
ret void
}
; CHECK-LABEL: define void @VolatileStore
; CHECK-COMPOUND-NOT: __tsan_read4
; CHECK-COMPOUND-VOLATILE: __tsan_read4
; CHECK-COMPOUND: __tsan_read_write4
; CHECK-COMPOUND-VOLATILE: __tsan_volatile_write4
; CHECK: ret void
define void @VolatileBoth(i32* nocapture %ptr) nounwind uwtable sanitize_thread {
entry:
%0 = load volatile i32, i32* %ptr, align 4
%inc = add nsw i32 %0, 1
store volatile i32 %inc, i32* %ptr, align 4
ret void
}
; CHECK-LABEL: define void @VolatileBoth
; CHECK-COMPOUND-NOT: __tsan_read4
; CHECK-COMPOUND-VOLATILE: __tsan_volatile_read4
; CHECK-COMPOUND: __tsan_read_write4
; CHECK-COMPOUND-VOLATILE: __tsan_volatile_write4
; CHECK: ret void
|
