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1; RUN: opt < %s -lcssa -disable-output
2; PR977
3; END.
4
5define void @process_backlog() {
6entry:
7	br label %loopentry.preheader
8loopentry.preheader:		; preds = %dead_block_after_break, %entry
9	%work.0.ph = phi i32 [ %inc, %dead_block_after_break ], [ 0, %entry ]		; <i32> [#uses=0]
10	br label %loopentry
11loopentry:		; preds = %endif.1, %loopentry.preheader
12	br i1 false, label %then.i, label %loopentry.__skb_dequeue67.exit_crit_edge
13loopentry.__skb_dequeue67.exit_crit_edge:		; preds = %loopentry
14	br label %__skb_dequeue67.exit
15then.i:		; preds = %loopentry
16	br label %__skb_dequeue67.exit
17__skb_dequeue67.exit:		; preds = %then.i, %loopentry.__skb_dequeue67.exit_crit_edge
18	br i1 false, label %then.0, label %__skb_dequeue67.exit.endif.0_crit_edge
19__skb_dequeue67.exit.endif.0_crit_edge:		; preds = %__skb_dequeue67.exit
20	br label %endif.0
21then.0:		; preds = %__skb_dequeue67.exit
22	br label %job_done
23dead_block_after_goto:		; No predecessors!
24	unreachable
25endif.0:		; preds = %__skb_dequeue67.exit.endif.0_crit_edge
26	br i1 false, label %then.0.i, label %endif.0.endif.0.i_crit_edge
27endif.0.endif.0.i_crit_edge:		; preds = %endif.0
28	br label %endif.0.i
29then.0.i:		; preds = %endif.0
30	br label %endif.0.i
31endif.0.i:		; preds = %then.0.i, %endif.0.endif.0.i_crit_edge
32	br i1 false, label %then.i.i, label %endif.0.i.skb_bond.exit.i_crit_edge
33endif.0.i.skb_bond.exit.i_crit_edge:		; preds = %endif.0.i
34	br label %skb_bond.exit.i
35then.i.i:		; preds = %endif.0.i
36	br label %skb_bond.exit.i
37skb_bond.exit.i:		; preds = %then.i.i, %endif.0.i.skb_bond.exit.i_crit_edge
38	br label %loopentry.0.i
39loopentry.0.i:		; preds = %loopentry.0.i.backedge, %skb_bond.exit.i
40	br i1 false, label %loopentry.0.i.no_exit.0.i_crit_edge, label %loopentry.0.i.loopexit.0.i_crit_edge
41loopentry.0.i.loopexit.0.i_crit_edge:		; preds = %loopentry.0.i
42	br label %loopexit.0.i
43loopentry.0.i.no_exit.0.i_crit_edge:		; preds = %loopentry.0.i
44	br label %no_exit.0.i
45no_exit.0.i:		; preds = %then.3.i.no_exit.0.i_crit_edge, %loopentry.0.i.no_exit.0.i_crit_edge
46	br i1 false, label %no_exit.0.i.shortcirc_done.0.i_crit_edge, label %shortcirc_next.0.i
47no_exit.0.i.shortcirc_done.0.i_crit_edge:		; preds = %no_exit.0.i
48	br label %shortcirc_done.0.i
49shortcirc_next.0.i:		; preds = %no_exit.0.i
50	br label %shortcirc_done.0.i
51shortcirc_done.0.i:		; preds = %shortcirc_next.0.i, %no_exit.0.i.shortcirc_done.0.i_crit_edge
52	br i1 false, label %then.1.i, label %endif.1.i
53then.1.i:		; preds = %shortcirc_done.0.i
54	br i1 false, label %then.2.i, label %then.1.i.endif.2.i_crit_edge
55then.1.i.endif.2.i_crit_edge:		; preds = %then.1.i
56	br label %endif.2.i
57then.2.i:		; preds = %then.1.i
58	br i1 false, label %then.3.i, label %else.0.i
59then.3.i:		; preds = %then.2.i
60	br i1 false, label %then.3.i.no_exit.0.i_crit_edge, label %then.3.i.loopexit.0.i_crit_edge
61then.3.i.loopexit.0.i_crit_edge:		; preds = %then.3.i
62	br label %loopexit.0.i
63then.3.i.no_exit.0.i_crit_edge:		; preds = %then.3.i
64	br label %no_exit.0.i
65else.0.i:		; preds = %then.2.i
66	br label %endif.2.i
67endif.3.i:		; No predecessors!
68	unreachable
69endif.2.i:		; preds = %else.0.i, %then.1.i.endif.2.i_crit_edge
70	br label %loopentry.0.i.backedge
71endif.1.i:		; preds = %shortcirc_done.0.i
72	br label %loopentry.0.i.backedge
73loopentry.0.i.backedge:		; preds = %endif.1.i, %endif.2.i
74	br label %loopentry.0.i
75loopexit.0.i:		; preds = %then.3.i.loopexit.0.i_crit_edge, %loopentry.0.i.loopexit.0.i_crit_edge
76	br label %loopentry.1.i
77loopentry.1.i:		; preds = %loopentry.1.i.backedge, %loopexit.0.i
78	br i1 false, label %loopentry.1.i.no_exit.1.i_crit_edge, label %loopentry.1.i.loopexit.1.i_crit_edge
79loopentry.1.i.loopexit.1.i_crit_edge:		; preds = %loopentry.1.i
80	br label %loopexit.1.i
81loopentry.1.i.no_exit.1.i_crit_edge:		; preds = %loopentry.1.i
82	br label %no_exit.1.i
83no_exit.1.i:		; preds = %then.6.i.no_exit.1.i_crit_edge, %loopentry.1.i.no_exit.1.i_crit_edge
84	br i1 false, label %shortcirc_next.1.i, label %no_exit.1.i.shortcirc_done.1.i_crit_edge
85no_exit.1.i.shortcirc_done.1.i_crit_edge:		; preds = %no_exit.1.i
86	br label %shortcirc_done.1.i
87shortcirc_next.1.i:		; preds = %no_exit.1.i
88	br i1 false, label %shortcirc_next.1.i.shortcirc_done.2.i_crit_edge, label %shortcirc_next.2.i
89shortcirc_next.1.i.shortcirc_done.2.i_crit_edge:		; preds = %shortcirc_next.1.i
90	br label %shortcirc_done.2.i
91shortcirc_next.2.i:		; preds = %shortcirc_next.1.i
92	br label %shortcirc_done.2.i
93shortcirc_done.2.i:		; preds = %shortcirc_next.2.i, %shortcirc_next.1.i.shortcirc_done.2.i_crit_edge
94	br label %shortcirc_done.1.i
95shortcirc_done.1.i:		; preds = %shortcirc_done.2.i, %no_exit.1.i.shortcirc_done.1.i_crit_edge
96	br i1 false, label %then.4.i, label %endif.4.i
97then.4.i:		; preds = %shortcirc_done.1.i
98	br i1 false, label %then.5.i, label %then.4.i.endif.5.i_crit_edge
99then.4.i.endif.5.i_crit_edge:		; preds = %then.4.i
100	br label %endif.5.i
101then.5.i:		; preds = %then.4.i
102	br i1 false, label %then.6.i, label %else.1.i
103then.6.i:		; preds = %then.5.i
104	br i1 false, label %then.6.i.no_exit.1.i_crit_edge, label %then.6.i.loopexit.1.i_crit_edge
105then.6.i.loopexit.1.i_crit_edge:		; preds = %then.6.i
106	br label %loopexit.1.i
107then.6.i.no_exit.1.i_crit_edge:		; preds = %then.6.i
108	br label %no_exit.1.i
109else.1.i:		; preds = %then.5.i
110	br label %endif.5.i
111endif.6.i:		; No predecessors!
112	unreachable
113endif.5.i:		; preds = %else.1.i, %then.4.i.endif.5.i_crit_edge
114	br label %loopentry.1.i.backedge
115endif.4.i:		; preds = %shortcirc_done.1.i
116	br label %loopentry.1.i.backedge
117loopentry.1.i.backedge:		; preds = %endif.4.i, %endif.5.i
118	br label %loopentry.1.i
119loopexit.1.i:		; preds = %then.6.i.loopexit.1.i_crit_edge, %loopentry.1.i.loopexit.1.i_crit_edge
120	br i1 false, label %then.7.i, label %else.2.i
121then.7.i:		; preds = %loopexit.1.i
122	br i1 false, label %then.8.i, label %else.3.i
123then.8.i:		; preds = %then.7.i
124	br label %netif_receive_skb.exit
125else.3.i:		; preds = %then.7.i
126	br label %netif_receive_skb.exit
127endif.8.i:		; No predecessors!
128	unreachable
129else.2.i:		; preds = %loopexit.1.i
130	br i1 false, label %else.2.i.shortcirc_done.i.i_crit_edge, label %shortcirc_next.i.i
131else.2.i.shortcirc_done.i.i_crit_edge:		; preds = %else.2.i
132	br label %shortcirc_done.i.i
133shortcirc_next.i.i:		; preds = %else.2.i
134	br label %shortcirc_done.i.i
135shortcirc_done.i.i:		; preds = %shortcirc_next.i.i, %else.2.i.shortcirc_done.i.i_crit_edge
136	br i1 false, label %then.i1.i, label %shortcirc_done.i.i.kfree_skb65.exit.i_crit_edge
137shortcirc_done.i.i.kfree_skb65.exit.i_crit_edge:		; preds = %shortcirc_done.i.i
138	br label %kfree_skb65.exit.i
139then.i1.i:		; preds = %shortcirc_done.i.i
140	br label %kfree_skb65.exit.i
141kfree_skb65.exit.i:		; preds = %then.i1.i, %shortcirc_done.i.i.kfree_skb65.exit.i_crit_edge
142	br label %netif_receive_skb.exit
143netif_receive_skb.exit:		; preds = %kfree_skb65.exit.i, %else.3.i, %then.8.i
144	br i1 false, label %then.i1, label %netif_receive_skb.exit.dev_put69.exit_crit_edge
145netif_receive_skb.exit.dev_put69.exit_crit_edge:		; preds = %netif_receive_skb.exit
146	br label %dev_put69.exit
147then.i1:		; preds = %netif_receive_skb.exit
148	br label %dev_put69.exit
149dev_put69.exit:		; preds = %then.i1, %netif_receive_skb.exit.dev_put69.exit_crit_edge
150	%inc = add i32 0, 1		; <i32> [#uses=1]
151	br i1 false, label %dev_put69.exit.shortcirc_done_crit_edge, label %shortcirc_next
152dev_put69.exit.shortcirc_done_crit_edge:		; preds = %dev_put69.exit
153	br label %shortcirc_done
154shortcirc_next:		; preds = %dev_put69.exit
155	br label %shortcirc_done
156shortcirc_done:		; preds = %shortcirc_next, %dev_put69.exit.shortcirc_done_crit_edge
157	br i1 false, label %then.1, label %endif.1
158then.1:		; preds = %shortcirc_done
159	ret void
160dead_block_after_break:		; No predecessors!
161	br label %loopentry.preheader
162endif.1:		; preds = %shortcirc_done
163	br label %loopentry
164loopexit:		; No predecessors!
165	unreachable
166after_ret.0:		; No predecessors!
167	br label %job_done
168job_done:		; preds = %after_ret.0, %then.0
169	br label %loopentry.i
170loopentry.i:		; preds = %no_exit.i, %job_done
171	br i1 false, label %no_exit.i, label %clear_bit62.exit
172no_exit.i:		; preds = %loopentry.i
173	br label %loopentry.i
174clear_bit62.exit:		; preds = %loopentry.i
175	br i1 false, label %then.2, label %endif.2
176then.2:		; preds = %clear_bit62.exit
177	ret void
178endif.2:		; preds = %clear_bit62.exit
179	ret void
180after_ret.1:		; No predecessors!
181	ret void
182return:		; No predecessors!
183	unreachable
184}
185