1; RUN: opt -objc-arc -S < %s | FileCheck %s
2
3declare i8* @llvm.objc.initWeak(i8**, i8*)
4declare i8* @llvm.objc.storeWeak(i8**, i8*)
5declare i8* @llvm.objc.loadWeak(i8**)
6declare void @llvm.objc.destroyWeak(i8**)
7declare i8* @llvm.objc.loadWeakRetained(i8**)
8declare void @llvm.objc.moveWeak(i8**, i8**)
9declare void @llvm.objc.copyWeak(i8**, i8**)
10
11; If the pointer-to-weak-pointer is null, it's undefined behavior.
12
13; CHECK-LABEL: define void @test0(
14; CHECK: store i8* undef, i8** null
15; CHECK: store i8* undef, i8** null
16; CHECK: store i8* undef, i8** null
17; CHECK: store i8* undef, i8** null
18; CHECK: store i8* undef, i8** null
19; CHECK: store i8* undef, i8** null
20; CHECK: store i8* undef, i8** null
21; CHECK: store i8* undef, i8** null
22; CHECK: store i8* undef, i8** null
23; CHECK: store i8* undef, i8** null
24; CHECK: store i8* undef, i8** null
25; CHECK: store i8* undef, i8** null
26; CHECK: store i8* undef, i8** null
27; CHECK: store i8* undef, i8** null
28; CHECK: store i8* undef, i8** null
29; CHECK: store i8* undef, i8** null
30; CHECK: store i8* undef, i8** null
31; CHECK: store i8* undef, i8** null
32; CHECK: ret void
33define void @test0(i8* %p, i8** %q) {
34entry:
35  call i8* @llvm.objc.storeWeak(i8** null, i8* %p)
36  call i8* @llvm.objc.storeWeak(i8** undef, i8* %p)
37  call i8* @llvm.objc.loadWeakRetained(i8** null)
38  call i8* @llvm.objc.loadWeakRetained(i8** undef)
39  call i8* @llvm.objc.loadWeak(i8** null)
40  call i8* @llvm.objc.loadWeak(i8** undef)
41  call i8* @llvm.objc.initWeak(i8** null, i8* %p)
42  call i8* @llvm.objc.initWeak(i8** undef, i8* %p)
43  call void @llvm.objc.destroyWeak(i8** null)
44  call void @llvm.objc.destroyWeak(i8** undef)
45
46  call void @llvm.objc.copyWeak(i8** null, i8** %q)
47  call void @llvm.objc.copyWeak(i8** undef, i8** %q)
48  call void @llvm.objc.copyWeak(i8** %q, i8** null)
49  call void @llvm.objc.copyWeak(i8** %q, i8** undef)
50
51  call void @llvm.objc.moveWeak(i8** null, i8** %q)
52  call void @llvm.objc.moveWeak(i8** undef, i8** %q)
53  call void @llvm.objc.moveWeak(i8** %q, i8** null)
54  call void @llvm.objc.moveWeak(i8** %q, i8** undef)
55
56  ret void
57}
58