xref: /llvm-project/llvm/test/Transforms/Util/pr49185.ll (revision 2d69827c5c754f0eca98e497ecf0e52ed54b4fd3) 
1; REQUIRES: asserts
2; RUN: opt -S -passes='default<O3>' %s
3%struct0 = type { i64, i64, i32, i64, i32 }
4%union0 = type { i32 }
5
6@g_6 = external dso_local global i32, align 1
7@g_60 = external dso_local global i16, align 1
8@g_79 = external dso_local global { i16, i16 }, align 1
9@g_315 = external dso_local global %struct0, align 1
10@g_359 = external dso_local global %struct0, align 1
11
12define dso_local i16 @main(i16 %argc, ptr %argv) #0 {
13entry:
14  %call2 = call i16 @func_1()
15  unreachable
16}
17
18define internal i16 @func_1() #0 {
19entry:
20  %call = call i16 @func_21(ptr undef, i32 undef, ptr undef)
21  ret i16 undef
22}
23
24define internal i16 @func_21(ptr %p_22, i32 %p_23, ptr %p_24) #0 {
25entry:
26  call void @func_34(ptr align 1 undef, i32 undef, i32 undef, ptr @g_6, ptr byval(%union0) align 1 undef)
27  unreachable
28}
29
30define internal void @func_34(ptr %agg.result, i32 %p_35, i32 %p_36, ptr %p_37, ptr %p_38) #0 {
31entry:
32  %p_37.addr = alloca ptr, align 1
33  %cleanup.dest.slot = alloca i32, align 1
34  store ptr %p_37, ptr %p_37.addr, align 1
35  br label %lbl_898
36
37lbl_898:                                          ; preds = %cleanup3097, %entry
38  br label %lbl_1111
39
40lbl_1111:                                         ; preds = %cleanup3097, %lbl_898
41  %0 = load i32, ptr getelementptr inbounds (%struct0, ptr @g_359, i32 0, i32 4), align 1
42  %tobool1833 = icmp ne i32 %0, 0
43  br i1 %tobool1833, label %land.rhs1834, label %land.end1851
44
45land.rhs1834:                                     ; preds = %lbl_1111
46  store i16 0, ptr @g_60, align 1
47  br label %land.end1851
48
49land.end1851:                                     ; preds = %land.rhs1834, %lbl_1111
50  %1 = load ptr, ptr %p_37.addr, align 1
51  %2 = load i32, ptr %1, align 1
52  %tobool2351 = icmp ne i32 %2, 0
53  br i1 %tobool2351, label %if.then2352, label %if.else3029
54
55if.then2352:                                      ; preds = %land.end1851
56  %3 = load i16, ptr @g_79, align 1, !tbaa !1
57  %tobool3011 = icmp ne i16 %3, 0
58  call void @llvm.assume(i1 %tobool3011)
59  store i32 11, ptr %cleanup.dest.slot, align 1
60  br label %cleanup3097
61
62if.else3029:                                      ; preds = %land.end1851
63  store i32 3, ptr getelementptr inbounds (%struct0, ptr @g_315, i32 0, i32 4), align 1
64  store i32 132, ptr %cleanup.dest.slot, align 1
65  br label %cleanup3097
66
67cleanup3097:                                      ; preds = %if.else3029, %if.then2352
68  %cleanup.dest3113 = load i32, ptr %cleanup.dest.slot, align 1
69  switch i32 %cleanup.dest3113, label %cleanup3402 [
70    i32 132, label %lbl_1111
71    i32 11, label %lbl_898
72  ]
73
74cleanup3402:                                      ; preds = %cleanup3097
75  ret void
76}
77
78; Function Attrs: nofree nosync nounwind willreturn
79declare void @llvm.assume(i1 noundef) #1
80
81attributes #0 = { "use-soft-float"="false" }
82attributes #1 = { nofree nosync nounwind willreturn }
83
84!llvm.ident = !{!0}
85
86!0 = !{!"clang version 13.0.0"}
87!1 = !{!2, !2, i64 0}
88!2 = !{!"omnipotent char", !3, i64 0}
89!3 = !{!"Simple C/C++ TBAA"}
90