1; RUN: llc -verify-machineinstrs < %s
2;
3; The lowering of a switch combined with constand folding would leave spurious extra arguments on a PHI instruction.
4;
5target triple = "x86_64-apple-darwin10"
6
7define void @foo() {
8  br label %cond_true813.i
9
10cond_true813.i:                                   ; preds = %0
11  br i1 false, label %cond_true818.i, label %cond_next1146.i
12
13cond_true818.i:                                   ; preds = %cond_true813.i
14  br i1 false, label %recog_memoized.exit52, label %cond_next1146.i
15
16recog_memoized.exit52:                            ; preds = %cond_true818.i
17  switch i32 0, label %bb886.i.preheader [
18    i32 0, label %bb907.i
19    i32 44, label %bb866.i
20    i32 103, label %bb874.i
21    i32 114, label %bb874.i
22  ]
23
24bb857.i:                                          ; preds = %bb886.i, %bb866.i
25  %tmp862.i494.24 = phi i8* [ null, %bb866.i ], [ %tmp862.i494.26, %bb886.i ] ; <i8*> [#uses=1]
26  switch i32 0, label %bb886.i.preheader [
27    i32 0, label %bb907.i
28    i32 44, label %bb866.i
29    i32 103, label %bb874.i
30    i32 114, label %bb874.i
31  ]
32
33bb866.i.loopexit:                                 ; preds = %bb874.i
34  br label %bb866.i
35
36bb866.i.loopexit31:                               ; preds = %cond_true903.i
37  br label %bb866.i
38
39bb866.i:                                          ; preds = %bb866.i.loopexit31, %bb866.i.loopexit, %bb857.i, %recog_memoized.exit52
40  br i1 false, label %bb907.i, label %bb857.i
41
42bb874.i.preheader.loopexit:                       ; preds = %cond_true903.i, %cond_true903.i
43  ret void
44
45bb874.i:                                          ; preds = %bb857.i, %bb857.i, %recog_memoized.exit52, %recog_memoized.exit52
46  switch i32 0, label %bb886.i.preheader.loopexit [
47    i32 0, label %bb907.i
48    i32 44, label %bb866.i.loopexit
49    i32 103, label %bb874.i.backedge
50    i32 114, label %bb874.i.backedge
51  ]
52
53bb874.i.backedge:                                 ; preds = %bb874.i, %bb874.i
54  ret void
55
56bb886.i.preheader.loopexit:                       ; preds = %bb874.i
57  ret void
58
59bb886.i.preheader:                                ; preds = %bb857.i, %recog_memoized.exit52
60  %tmp862.i494.26 = phi i8* [ undef, %recog_memoized.exit52 ], [ %tmp862.i494.24, %bb857.i ] ; <i8*> [#uses=1]
61  br label %bb886.i
62
63bb886.i:                                          ; preds = %cond_true903.i, %bb886.i.preheader
64  br i1 false, label %bb857.i, label %cond_true903.i
65
66cond_true903.i:                                   ; preds = %bb886.i
67  switch i32 0, label %bb886.i [
68    i32 0, label %bb907.i
69    i32 44, label %bb866.i.loopexit31
70    i32 103, label %bb874.i.preheader.loopexit
71    i32 114, label %bb874.i.preheader.loopexit
72  ]
73
74bb907.i:                                          ; preds = %cond_true903.i, %bb874.i, %bb866.i, %bb857.i, %recog_memoized.exit52
75  br i1 false, label %cond_next1146.i, label %cond_true910.i
76
77cond_true910.i:                                   ; preds = %bb907.i
78  ret void
79
80cond_next1146.i:                                  ; preds = %bb907.i, %cond_true818.i, %cond_true813.i
81  ret void
82
83bb2060.i:                                         ; No predecessors!
84  br i1 false, label %cond_true2064.i, label %bb2067.i
85
86cond_true2064.i:                                  ; preds = %bb2060.i
87  unreachable
88
89bb2067.i:                                         ; preds = %bb2060.i
90  ret void
91
92cond_next3473:                                    ; No predecessors!
93  ret void
94
95cond_next3521:                                    ; No predecessors!
96  ret void
97}
98