1; RUN: opt < %s -gvn | llvm-dis
2; PR3358
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
4target triple = "x86_64-unknown-linux-gnu"
5	%struct.re_pattern_buffer = type { i8*, i64, i64, i64, i8*, i8*, i64, i8 }
6	%struct.re_registers = type { i32, i32*, i32* }
7
8define fastcc i32 @byte_re_match_2_internal(%struct.re_pattern_buffer* nocapture %bufp, i8* %string1, i32 %size1, i8* %string2, i32 %size2, i32 %pos, %struct.re_registers* %regs, i32 %stop) nounwind {
9entry:
10	br label %bb159
11
12succeed_label:		; preds = %bb159
13	ret i32 0
14
15bb159:		; preds = %bb664, %bb554, %bb159, %bb159, %bb159, %entry
16	%d.0 = phi i8* [ null, %entry ], [ %d.0, %bb159 ], [ %d.0, %bb554 ], [ %d.0, %bb159 ], [ %d.0, %bb159 ], [ %d.12, %bb664 ]		; <i8*> [#uses=5]
17	switch i32 0, label %bb661 [
18		i32 0, label %bb159
19		i32 1, label %succeed_label
20		i32 13, label %bb159
21		i32 14, label %bb159
22		i32 16, label %bb411
23		i32 24, label %bb622
24		i32 28, label %bb543
25	]
26
27bb411:		; preds = %bb411, %bb159
28	br label %bb411
29
30bb543:		; preds = %bb159
31	br i1 false, label %bb549, label %bb550
32
33bb549:		; preds = %bb543
34	br label %bb554
35
36bb550:		; preds = %bb543
37	br i1 false, label %bb554, label %bb552
38
39bb552:		; preds = %bb550
40	%0 = load i8* %d.0, align 8		; <i8> [#uses=0]
41	br label %bb554
42
43bb554:		; preds = %bb552, %bb550, %bb549
44	br i1 false, label %bb159, label %bb661
45
46bb622:		; preds = %bb622, %bb159
47	br label %bb622
48
49bb661:		; preds = %bb554, %bb159
50	%d.12 = select i1 false, i8* null, i8* null		; <i8*> [#uses=1]
51	br label %bb664
52
53bb664:		; preds = %bb664, %bb661
54	br i1 false, label %bb159, label %bb664
55}
56