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1; RUN: llc < %s -mtriple=x86_64-unknown-freebsd8.1 -o /dev/null
2; This formerly crashed, PR 8154.
3
4module asm ".weak sem_close"
5module asm ".equ sem_close, _sem_close"
6module asm ".weak sem_destroy"
7module asm ".equ sem_destroy, _sem_destroy"
8module asm ".weak sem_getvalue"
9module asm ".equ sem_getvalue, _sem_getvalue"
10module asm ".weak sem_init"
11module asm ".equ sem_init, _sem_init"
12module asm ".weak sem_open"
13module asm ".equ sem_open, _sem_open"
14module asm ".weak sem_post"
15module asm ".equ sem_post, _sem_post"
16module asm ".weak sem_timedwait"
17module asm ".equ sem_timedwait, _sem_timedwait"
18module asm ".weak sem_trywait"
19module asm ".equ sem_trywait, _sem_trywait"
20module asm ".weak sem_unlink"
21module asm ".equ sem_unlink, _sem_unlink"
22module asm ".weak sem_wait"
23module asm ".equ sem_wait, _sem_wait"
24
25%struct._sem = type { i32, %struct._usem }
26%struct._usem = type { i32, i32, i32 }
27
28define void @_sem_timedwait(%struct._sem* noalias %sem) nounwind ssp {
29entry:
30  br i1 undef, label %while.cond.preheader, label %sem_check_validity.exit
31
32while.cond.preheader:                             ; preds = %entry
33  %tmp4 = getelementptr inbounds %struct._sem, %struct._sem* %sem, i64 0, i32 1, i32 1
34  br label %while.cond
35
36sem_check_validity.exit:                          ; preds = %entry
37  ret void
38
39while.cond:                                       ; preds = %while.body, %while.cond.preheader
40  br i1 undef, label %while.body, label %while.end
41
42while.body:                                       ; preds = %while.cond
43  %0 = call i8 asm sideeffect "\09lock ; \09\09\09cmpxchgl $2,$1 ;\09       sete\09$0 ;\09\091:\09\09\09\09# atomic_cmpset_int", "={ax},=*m,r,{ax},*m,~{memory},~{dirflag},~{fpsr},~{flags}"(i32* %tmp4, i32 undef, i32 undef, i32* %tmp4) nounwind, !srcloc !0
44  br i1 undef, label %while.cond, label %return
45
46while.end:                                        ; preds = %while.cond
47  br i1 undef, label %if.end18, label %return
48
49if.end18:                                         ; preds = %while.end
50  unreachable
51
52return:                                           ; preds = %while.end, %while.body
53  ret void
54}
55
56!0 = !{i32 158484}
57