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
|
; REQUIRES: x86-registered-target
; RUN: opt < %s -S -asan-instrumentation-with-call-threshold=0 -passes=asan -asan-use-stack-safety=0 -o - | FileCheck %s --implicit-check-not="call {{.*}} @__asan_{{load|store|stack}}" --check-prefixes=CHECK,NOSAFETY
; RUN: opt < %s -S -asan-instrumentation-with-call-threshold=0 -passes=asan | FileCheck %s --implicit-check-not="call {{.*}} @__asan_{{load|store|stack}}"
; CHECK-LABEL: define i32 @load
define i32 @load() sanitize_address {
%buf = alloca [10 x i8], align 1
; NOSAFETY: call i64 @__asan_stack_malloc
%1 = load i8, ptr %buf, align 1
; NOSAFETY: call void @__asan_load1
ret i32 0
}
; CHECK-LABEL: define i32 @store
define i32 @store() sanitize_address {
%buf = alloca [10 x i8], align 1
; NOSAFETY: call i64 @__asan_stack_malloc
store i8 0, ptr %buf
; NOSAFETY: call void @__asan_store1
ret i32 0
}
; CHECK-LABEL: define i32 @unsafe_alloca
define i32 @unsafe_alloca(i32 %i) sanitize_address {
%buf.sroa.0 = alloca [10 x i8], align 4
; CHECK: call i64 @__asan_stack_malloc
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 %i, i32 0
store volatile i8 0, ptr %ptr, align 4
; CHECK: call void @__asan_store1
store volatile i8 0, ptr %buf.sroa.0, align 4
; NOSAFETY: call void @__asan_store1
ret i32 0
}
; CHECK-LABEL: define void @atomicrmw
define void @atomicrmw() sanitize_address {
%buf = alloca [10 x i8], align 1
; NOSAFETY: call i64 @__asan_stack_malloc
%1 = atomicrmw add ptr %buf, i8 1 seq_cst
; NOSAFETY: call void @__asan_store1
ret void
}
; CHECK-LABEL: define void @cmpxchg
define void @cmpxchg(i8 %compare_to, i8 %new_value) sanitize_address {
%buf = alloca [10 x i8], align 1
; NOSAFETY: call i64 @__asan_stack_malloc
%1 = cmpxchg ptr %buf, i8 %compare_to, i8 %new_value seq_cst seq_cst
; NOSAFETY: call void @__asan_store1
ret void
}
%struct.S = type { i32, i32 }
; CHECK-LABEL: define %struct.S @exchange(
; NOSAFETY: call i64 @__asan_stack_malloc
; CHECK: call ptr @__asan_memcpy(
; CHECK: call ptr @__asan_memcpy(
; NOSAFETY: call void @__asan_loadN(
define %struct.S @exchange(ptr %a, ptr %b) sanitize_address {
entry:
%tmp = alloca %struct.S, align 4
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %tmp, ptr align 4 %a, i64 8, i1 false)
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 8, i1 false)
%ret = load %struct.S, ptr %tmp
ret %struct.S %ret
}
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) nounwind
|
