1; Do not promote null value because it may be unsafe to do so.
2; RUN: opt < %s -licm -S | not grep promoted
3
4define i32 @f(i32 %foo, i32 %bar, i32 %com) {
5entry:
6	%tmp2 = icmp eq i32 %foo, 0		; <i1> [#uses=1]
7	br i1 %tmp2, label %cond_next, label %cond_true
8
9cond_true:		; preds = %entry
10	br label %return
11
12cond_next:		; preds = %entry
13	br label %bb
14
15bb:		; preds = %bb15, %cond_next
16	switch i32 %bar, label %bb15 [
17		 i32 1, label %bb6
18	]
19
20bb6:		; preds = %bb
21	%tmp8 = icmp eq i32 %com, 0		; <i1> [#uses=1]
22	br i1 %tmp8, label %cond_next14, label %cond_true11
23
24cond_true11:		; preds = %bb6
25	br label %return
26
27cond_next14:		; preds = %bb6
28	store i8 0, i8* null
29	br label %bb15
30
31bb15:		; preds = %cond_next14, %bb
32	br label %bb
33
34return:		; preds = %cond_true11, %cond_true
35	%storemerge = phi i32 [ 0, %cond_true ], [ undef, %cond_true11 ]		; <i32> [#uses=1]
36	ret i32 %storemerge
37}
38
39define i32 @kdMain() {
40entry:
41	%tmp1 = call i32 @f( i32 0, i32 1, i32 1 )		; <i32> [#uses=0]
42	call void @exit( i32 0 )
43	unreachable
44}
45
46declare void @exit(i32)
47