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]
12 declare i32 @fprintf(%FILE*, i8*, ...)
14 declare void @exit(i32)
16 declare i32 @remove(i8*)
18 declare i32 @fputc(i32, %FILE*)
20 declare i32 @fwrite(i8*, i32, i32, %FILE*)
22 declare void @perror(i8*)
24 define 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
30 %cast273 = getelementptr [17 x i8]* @.LC12, i64 0, i64 0 ; <i8*> [#uses=0]
33 bb3: ; preds = %bb2, %0
34 %cond267 = icmp sle i32 %fd, 3 ; <i1> [#uses=0]
37 bb4: ; No predecessors!
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
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
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
61 %cast277 = getelementptr [4 x i8]* @.LC10, i64 0, i64 0 ; <i8*> [#uses=0]
64 bb8: ; preds = %bb7, %bb6
65 br label %UnifiedExitNode
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
83 %cast279 = getelementptr [4 x i8]* @.LC11, i64 0, i64 0 ; <i8*> [#uses=0]
86 bb11: ; preds = %bb10, %bb9
87 %cast291 = zext i8 %reg1621 to i32 ; <i32> [#uses=1]
88 br label %UnifiedExitNode
90 UnifiedExitNode: ; preds = %bb11, %bb8, %bb4
91 %UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ] ; <i32> [#uses=1]
92 ret i32 %UnifiedRetVal
95 declare i32 @puts(i8*)
97 declare i32 @printf(i8*, ...)