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
| ; RUN: opt < %s -jump-threading -disable-output -verify-dom-info
@global = external global i64, align 8
define void @f() {
bb:
br label %bb1
bb1:
%tmp = load i64, i64* @global, align 8
%tmp2 = icmp eq i64 %tmp, 0
br i1 %tmp2, label %bb27, label %bb3
bb3:
%tmp4 = load i64, i64* @global, align 8
%tmp5 = icmp eq i64 %tmp4, 0
br i1 %tmp5, label %bb6, label %bb7
bb6:
br label %bb7
bb7:
%tmp8 = phi i1 [ true, %bb3 ], [ undef, %bb6 ]
%tmp9 = select i1 %tmp8, i64 %tmp4, i64 0
br i1 false, label %bb10, label %bb23
bb10:
%tmp11 = load i64, i64* @global, align 8
%tmp12 = icmp slt i64 %tmp11, 5
br i1 %tmp12, label %bb13, label %bb17
bb13:
br label %bb14
bb14:
br i1 undef, label %bb15, label %bb16
bb15:
unreachable
bb16:
br label %bb10
bb17:
br label %bb18
bb18:
br i1 undef, label %bb22, label %bb13
bb19:
br i1 undef, label %bb20, label %bb21
bb20:
unreachable
bb21:
br label %bb18
bb22:
br label %bb23
bb23:
br i1 undef, label %bb24, label %bb13
bb24:
br i1 undef, label %bb26, label %bb25
bb25:
br label %bb19
bb26:
br label %bb1
bb27:
br label %bb24
}
|