1; RUN: opt < %s -adce -simplifycfg | llvm-dis
2%FILE = type { i32, i8*, i8*, i8, i8, i32, i32, i32 }
3	%spec_fd_t = type { i32, i32, i32, i8* }
4@__iob = external global [20 x %FILE]		; <[20 x %FILE]*> [#uses=1]
5@dbglvl = global i32 4		; <i32*> [#uses=3]
6@spec_fd = external global [3 x %spec_fd_t]		; <[3 x %spec_fd_t]*> [#uses=4]
7@.LC9 = internal global [34 x i8] c"spec_read: fd=%d, > MAX_SPEC_FD!\0A\00"		; <[34 x i8]*> [#uses=1]
8@.LC10 = internal global [4 x i8] c"EOF\00"		; <[4 x i8]*> [#uses=1]
9@.LC11 = internal global [4 x i8] c"%d\0A\00"		; <[4 x i8]*> [#uses=1]
10@.LC12 = internal global [17 x i8] c"spec_getc: %d = \00"		; <[17 x i8]*> [#uses=1]
11
12declare i32 @fprintf(%FILE*, i8*, ...)
13
14declare void @exit(i32)
15
16declare i32 @remove(i8*)
17
18declare i32 @fputc(i32, %FILE*)
19
20declare i32 @fwrite(i8*, i32, i32, %FILE*)
21
22declare void @perror(i8*)
23
24define i32 @spec_getc(i32 %fd) {
25	%reg109 = load i32* @dbglvl		; <i32> [#uses=1]
26	%cond266 = icmp sle i32 %reg109, 4		; <i1> [#uses=1]
27	br i1 %cond266, label %bb3, label %bb2
28
29bb2:		; preds = %0
30	%cast273 = getelementptr [17 x i8]* @.LC12, i64 0, i64 0		; <i8*> [#uses=0]
31	br label %bb3
32
33bb3:		; preds = %bb2, %0
34	%cond267 = icmp sle i32 %fd, 3		; <i1> [#uses=1]
35	br i1 %cond267, label %bb5, label %bb4
36
37bb4:		; preds = %bb3
38	%reg111 = getelementptr [20 x %FILE]* @__iob, i64 0, i64 1, i32 3		; <i8*> [#uses=1]
39	%cast274 = getelementptr [34 x i8]* @.LC9, i64 0, i64 0		; <i8*> [#uses=0]
40	%cast282 = bitcast i8* %reg111 to %FILE*		; <%FILE*> [#uses=0]
41	call void @exit( i32 1 )
42	br label %UnifiedExitNode
43
44bb5:		; preds = %bb3
45	%reg107-idxcast1 = sext i32 %fd to i64		; <i64> [#uses=2]
46	%reg107-idxcast2 = sext i32 %fd to i64		; <i64> [#uses=1]
47	%reg1311 = getelementptr [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast2		; <%spec_fd_t*> [#uses=1]
48	%idx1 = getelementptr [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2		; <i32*> [#uses=1]
49	%reg1321 = load i32* %idx1		; <i32> [#uses=3]
50	%idx2 = getelementptr %spec_fd_t* %reg1311, i64 0, i32 1		; <i32*> [#uses=1]
51	%reg1331 = load i32* %idx2		; <i32> [#uses=1]
52	%cond270 = icmp slt i32 %reg1321, %reg1331		; <i1> [#uses=1]
53	br i1 %cond270, label %bb9, label %bb6
54
55bb6:		; preds = %bb5
56	%reg134 = load i32* @dbglvl		; <i32> [#uses=1]
57	%cond271 = icmp sle i32 %reg134, 4		; <i1> [#uses=1]
58	br i1 %cond271, label %bb8, label %bb7
59
60bb7:		; preds = %bb6
61	%cast277 = getelementptr [4 x i8]* @.LC10, i64 0, i64 0		; <i8*> [#uses=0]
62	br label %bb8
63
64bb8:		; preds = %bb7, %bb6
65	br label %UnifiedExitNode
66
67bb9:		; preds = %bb5
68	%reg107-idxcast3 = sext i32 %fd to i64		; <i64> [#uses=1]
69	%idx3 = getelementptr [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast3, i32 3		; <i8**> [#uses=1]
70	%reg1601 = load i8** %idx3		; <i8*> [#uses=1]
71	%reg132-idxcast1 = sext i32 %reg1321 to i64		; <i64> [#uses=1]
72	%idx4 = getelementptr i8* %reg1601, i64 %reg132-idxcast1		; <i8*> [#uses=1]
73	%reg1621 = load i8* %idx4		; <i8> [#uses=2]
74	%cast108 = zext i8 %reg1621 to i64		; <i64> [#uses=0]
75	%reg157 = add i32 %reg1321, 1		; <i32> [#uses=1]
76	%idx5 = getelementptr [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2		; <i32*> [#uses=1]
77	store i32 %reg157, i32* %idx5
78	%reg163 = load i32* @dbglvl		; <i32> [#uses=1]
79	%cond272 = icmp sle i32 %reg163, 4		; <i1> [#uses=1]
80	br i1 %cond272, label %bb11, label %bb10
81
82bb10:		; preds = %bb9
83	%cast279 = getelementptr [4 x i8]* @.LC11, i64 0, i64 0		; <i8*> [#uses=0]
84	br label %bb11
85
86bb11:		; preds = %bb10, %bb9
87	%cast291 = zext i8 %reg1621 to i32		; <i32> [#uses=1]
88	br label %UnifiedExitNode
89
90UnifiedExitNode:		; preds = %bb11, %bb8, %bb4
91	%UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ]		; <i32> [#uses=1]
92	ret i32 %UnifiedRetVal
93}
94
95declare i32 @puts(i8*)
96
97declare i32 @printf(i8*, ...)
98