1; RUN: opt < %s -adce -S | FileCheck %s
2; RUN: opt < %s -adce -adce-remove-loops -S | FileCheck %s
3
4%FILE = type { i32, i8*, i8*, i8, i8, i32, i32, i32 }
5	%spec_fd_t = type { i32, i32, i32, i8* }
6@__iob = external global [20 x %FILE]		; <[20 x %FILE]*> [#uses=1]
7@dbglvl = global i32 4		; <i32*> [#uses=3]
8@spec_fd = external global [3 x %spec_fd_t]		; <[3 x %spec_fd_t]*> [#uses=4]
9@.LC9 = internal global [34 x i8] c"spec_read: fd=%d, > MAX_SPEC_FD!\0A\00"		; <[34 x i8]*> [#uses=1]
10@.LC10 = internal global [4 x i8] c"EOF\00"		; <[4 x i8]*> [#uses=1]
11@.LC11 = internal global [4 x i8] c"%d\0A\00"		; <[4 x i8]*> [#uses=1]
12@.LC12 = internal global [17 x i8] c"spec_getc: %d = \00"		; <[17 x i8]*> [#uses=1]
13
14declare i32 @fprintf(%FILE*, i8*, ...)
15
16declare void @exit(i32)
17
18declare i32 @remove(i8*)
19
20declare i32 @fputc(i32, %FILE*)
21
22declare i32 @fwrite(i8*, i32, i32, %FILE*)
23
24declare void @perror(i8*)
25
26define i32 @spec_getc(i32 %fd) {
27	%reg109 = load i32, i32* @dbglvl		; <i32> [#uses=1]
28	%cond266 = icmp sle i32 %reg109, 4		; <i1> [#uses=1]
29; CHECKL br label %bb3
30	br i1 %cond266, label %bb3, label %bb2
31
32bb2:		; preds = %0
33	%cast273 = getelementptr [17 x i8], [17 x i8]* @.LC12, i64 0, i64 0		; <i8*> [#uses=0]
34	br label %bb3
35
36bb3:		; preds = %bb2, %0
37	%cond267 = icmp sle i32 %fd, 3		; <i1> [#uses=1]
38	br i1 %cond267, label %bb5, label %bb4
39
40bb4:		; preds = %bb3
41	%reg111 = getelementptr [20 x %FILE], [20 x %FILE]* @__iob, i64 0, i64 1, i32 3		; <i8*> [#uses=1]
42	%cast274 = getelementptr [34 x i8], [34 x i8]* @.LC9, i64 0, i64 0		; <i8*> [#uses=0]
43	%cast282 = bitcast i8* %reg111 to %FILE*		; <%FILE*> [#uses=0]
44	call void @exit( i32 1 )
45	br label %UnifiedExitNode
46
47bb5:		; preds = %bb3
48	%reg107-idxcast1 = sext i32 %fd to i64		; <i64> [#uses=2]
49	%reg107-idxcast2 = sext i32 %fd to i64		; <i64> [#uses=1]
50	%reg1311 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast2		; <%spec_fd_t*> [#uses=1]
51	%idx1 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2		; <i32*> [#uses=1]
52	%reg1321 = load i32, i32* %idx1		; <i32> [#uses=3]
53	%idx2 = getelementptr %spec_fd_t, %spec_fd_t* %reg1311, i64 0, i32 1		; <i32*> [#uses=1]
54	%reg1331 = load i32, i32* %idx2		; <i32> [#uses=1]
55	%cond270 = icmp slt i32 %reg1321, %reg1331		; <i1> [#uses=1]
56	br i1 %cond270, label %bb9, label %bb6
57
58bb6:		; preds = %bb5
59	%reg134 = load i32, i32* @dbglvl		; <i32> [#uses=1]
60	%cond271 = icmp sle i32 %reg134, 4		; <i1> [#uses=1]
61; CHECK: br label %bb8
62	br i1 %cond271, label %bb8, label %bb7
63
64bb7:		; preds = %bb6
65	%cast277 = getelementptr [4 x i8], [4 x i8]* @.LC10, i64 0, i64 0		; <i8*> [#uses=0]
66	br label %bb8
67
68bb8:		; preds = %bb7, %bb6
69	br label %UnifiedExitNode
70
71bb9:		; preds = %bb5
72	%reg107-idxcast3 = sext i32 %fd to i64		; <i64> [#uses=1]
73	%idx3 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast3, i32 3		; <i8**> [#uses=1]
74	%reg1601 = load i8*, i8** %idx3		; <i8*> [#uses=1]
75	%reg132-idxcast1 = sext i32 %reg1321 to i64		; <i64> [#uses=1]
76	%idx4 = getelementptr i8, i8* %reg1601, i64 %reg132-idxcast1		; <i8*> [#uses=1]
77	%reg1621 = load i8, i8* %idx4		; <i8> [#uses=2]
78	%cast108 = zext i8 %reg1621 to i64		; <i64> [#uses=0]
79	%reg157 = add i32 %reg1321, 1		; <i32> [#uses=1]
80	%idx5 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2		; <i32*> [#uses=1]
81	store i32 %reg157, i32* %idx5
82	%reg163 = load i32, i32* @dbglvl		; <i32> [#uses=1]
83	%cond272 = icmp sle i32 %reg163, 4		; <i1> [#uses=1]
84; CHECK: br label %bb11
85	br i1 %cond272, label %bb11, label %bb10
86
87bb10:		; preds = %bb9
88	%cast279 = getelementptr [4 x i8], [4 x i8]* @.LC11, i64 0, i64 0		; <i8*> [#uses=0]
89	br label %bb11
90
91bb11:		; preds = %bb10, %bb9
92	%cast291 = zext i8 %reg1621 to i32		; <i32> [#uses=1]
93	br label %UnifiedExitNode
94
95UnifiedExitNode:		; preds = %bb11, %bb8, %bb4
96	%UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ]		; <i32> [#uses=1]
97	ret i32 %UnifiedRetVal
98}
99
100declare i32 @puts(i8*)
101
102declare i32 @printf(i8*, ...)
103