1 ; RUN: llc < %s -mtriple=x86_64-unknown-freebsd8.1 -o /dev/null
2 ; This formerly crashed, PR 8154.
4 module asm ".weak sem_close"
5 module asm ".equ sem_close, _sem_close"
6 module asm ".weak sem_destroy"
7 module asm ".equ sem_destroy, _sem_destroy"
8 module asm ".weak sem_getvalue"
9 module asm ".equ sem_getvalue, _sem_getvalue"
10 module asm ".weak sem_init"
11 module asm ".equ sem_init, _sem_init"
12 module asm ".weak sem_open"
13 module asm ".equ sem_open, _sem_open"
14 module asm ".weak sem_post"
15 module asm ".equ sem_post, _sem_post"
16 module asm ".weak sem_timedwait"
17 module asm ".equ sem_timedwait, _sem_timedwait"
18 module asm ".weak sem_trywait"
19 module asm ".equ sem_trywait, _sem_trywait"
20 module asm ".weak sem_unlink"
21 module asm ".equ sem_unlink, _sem_unlink"
22 module asm ".weak sem_wait"
23 module asm ".equ sem_wait, _sem_wait"
25 %struct._sem = type { i32, %struct._usem }
26 %struct._usem = type { i32, i32, i32 }
28 define void @_sem_timedwait(%struct._sem* noalias %sem) nounwind ssp {
30 br i1 undef, label %while.cond.preheader, label %sem_check_validity.exit
32 while.cond.preheader: ; preds = %entry
33 %tmp4 = getelementptr inbounds %struct._sem, %struct._sem* %sem, i64 0, i32 1, i32 1
36 sem_check_validity.exit: ; preds = %entry
39 while.cond: ; preds = %while.body, %while.cond.preheader
40 br i1 undef, label %while.body, label %while.end
42 while.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
46 while.end: ; preds = %while.cond
47 br i1 undef, label %if.end18, label %return
49 if.end18: ; preds = %while.end
52 return: ; preds = %while.end, %while.body