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 12 declare i32 @fprintf(%FILE*, i8*, ...) 13 14 declare void @exit(i32) 15 16 declare i32 @remove(i8*) 17 18 declare i32 @fputc(i32, %FILE*) 19 20 declare i32 @fwrite(i8*, i32, i32, %FILE*) 21 22 declare void @perror(i8*) 23 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 28 29 bb2: ; preds = %0 30 %cast273 = getelementptr [17 x i8]* @.LC12, i64 0, i64 0 ; <i8*> [#uses=0] 31 br label %bb3 32 33 bb3: ; preds = %bb2, %0 34 %cond267 = icmp sle i32 %fd, 3 ; <i1> [#uses=0] 35 br label %bb5 36 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 43 44 bb5: ; 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 55 bb6: ; 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 60 bb7: ; preds = %bb6 61 %cast277 = getelementptr [4 x i8]* @.LC10, i64 0, i64 0 ; <i8*> [#uses=0] 62 br label %bb8 63 64 bb8: ; preds = %bb7, %bb6 65 br label %UnifiedExitNode 66 67 bb9: ; 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 82 bb10: ; preds = %bb9 83 %cast279 = getelementptr [4 x i8]* @.LC11, i64 0, i64 0 ; <i8*> [#uses=0] 84 br label %bb11 85 86 bb11: ; preds = %bb10, %bb9 87 %cast291 = zext i8 %reg1621 to i32 ; <i32> [#uses=1] 88 br label %UnifiedExitNode 89 90 UnifiedExitNode: ; preds = %bb11, %bb8, %bb4 91 %UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ] ; <i32> [#uses=1] 92 ret i32 %UnifiedRetVal 93 } 94 95 declare i32 @puts(i8*) 96 97 declare i32 @printf(i8*, ...) 98
