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
|
; RUN: opt -passes=lint -disable-output < %s 2>&1 | FileCheck %s
declare void @llvm.memcpy.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1) nounwind argmemonly
define void @f_memcpy() {
entry:
%dst = alloca [1000 x i8], align 2
%src = alloca [1000 x i8], align 4
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 %dst, ptr align 4 %src, i32 200, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 8 %dst, ptr align 4 %src, i32 200, i1 false)
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 8 %src, i32 200, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 8 %src, i32 200, i1 false)
; CHECK-NOT: @llvm.memcpy.p0.p0.i32
call void @llvm.memcpy.p0.p0.i32(ptr align 1 %dst, ptr align 4 %src, i32 200, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 2 %src, i32 200, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 4 %src, i32 200, i1 false)
ret void
}
declare void @llvm.memmove.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1) nounwind argmemonly
define void @f_memmove() {
entry:
%dst = alloca [1000 x i8], align 2
%src = alloca [1000 x i8], align 4
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memmove.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 200, i1 false)
call void @llvm.memmove.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 200, i1 false)
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memmove.p0.p0.i32(ptr align 2 %dst, ptr align 8 %src, i32 200, i1 false)
call void @llvm.memmove.p0.p0.i32(ptr align 2 %dst, ptr align 8 %src, i32 200, i1 false)
; CHECK-NOT: @llvm.memmove.p0.p0.i32
call void @llvm.memmove.p0.p0.i32(ptr align 1 %dst, ptr align 4 %src, i32 200, i1 false)
call void @llvm.memmove.p0.p0.i32(ptr align 2 %dst, ptr align 2 %src, i32 200, i1 false)
call void @llvm.memmove.p0.p0.i32(ptr align 2 %dst, ptr align 4 %src, i32 200, i1 false)
ret void
}
declare void @llvm.memset.p0.i32(ptr nocapture writeonly, i8, i32, i1) nounwind argmemonly
define void @f_memset() {
entry:
%dst = alloca [1000 x i8], align 2
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memset.p0.i32(ptr align 4 %dst, i8 55, i32 200, i1 false)
call void @llvm.memset.p0.i32(ptr align 4 %dst, i8 55, i32 200, i1 false)
; CHECK-NOT: @llvm.memset.p0.i32
call void @llvm.memset.p0.i32(ptr align 1 %dst, i8 55, i32 200, i1 false)
call void @llvm.memset.p0.i32(ptr align 2 %dst, i8 55, i32 200, i1 false)
ret void
}
|
