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; RUN: opt < %s -adce -simplifycfg | llvm-dis
%FILE = type { i32, i8*, i8*, i8, i8, i32, i32, i32 }
%spec_fd_t = type { i32, i32, i32, i8* }
@__iob = external global [20 x %FILE] ; <[20 x %FILE]*> [#uses=1]
@dbglvl = global i32 4 ; <i32*> [#uses=3]
@spec_fd = external global [3 x %spec_fd_t] ; <[3 x %spec_fd_t]*> [#uses=4]
@.LC9 = internal global [34 x i8] c"spec_read: fd=%d, > MAX_SPEC_FD!\0A\00" ; <[34 x i8]*> [#uses=1]
@.LC10 = internal global [4 x i8] c"EOF\00" ; <[4 x i8]*> [#uses=1]
@.LC11 = internal global [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1]
@.LC12 = internal global [17 x i8] c"spec_getc: %d = \00" ; <[17 x i8]*> [#uses=1]
declare i32 @fprintf(%FILE*, i8*, ...)
declare void @exit(i32)
declare i32 @remove(i8*)
declare i32 @fputc(i32, %FILE*)
declare i32 @fwrite(i8*, i32, i32, %FILE*)
declare void @perror(i8*)
define i32 @spec_getc(i32 %fd) {
%reg109 = load i32, i32* @dbglvl ; <i32> [#uses=1]
%cond266 = icmp sle i32 %reg109, 4 ; <i1> [#uses=1]
br i1 %cond266, label %bb3, label %bb2
bb2: ; preds = %0
%cast273 = getelementptr [17 x i8], [17 x i8]* @.LC12, i64 0, i64 0 ; <i8*> [#uses=0]
br label %bb3
bb3: ; preds = %bb2, %0
%cond267 = icmp sle i32 %fd, 3 ; <i1> [#uses=0]
br label %bb5
bb4: ; No predecessors!
%reg111 = getelementptr [20 x %FILE], [20 x %FILE]* @__iob, i64 0, i64 1, i32 3 ; <i8*> [#uses=1]
%cast274 = getelementptr [34 x i8], [34 x i8]* @.LC9, i64 0, i64 0 ; <i8*> [#uses=0]
%cast282 = bitcast i8* %reg111 to %FILE* ; <%FILE*> [#uses=0]
call void @exit( i32 1 )
br label %UnifiedExitNode
bb5: ; preds = %bb3
%reg107-idxcast1 = sext i32 %fd to i64 ; <i64> [#uses=2]
%reg107-idxcast2 = sext i32 %fd to i64 ; <i64> [#uses=1]
%reg1311 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast2 ; <%spec_fd_t*> [#uses=1]
%idx1 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2 ; <i32*> [#uses=1]
%reg1321 = load i32, i32* %idx1 ; <i32> [#uses=3]
%idx2 = getelementptr %spec_fd_t, %spec_fd_t* %reg1311, i64 0, i32 1 ; <i32*> [#uses=1]
%reg1331 = load i32, i32* %idx2 ; <i32> [#uses=1]
%cond270 = icmp slt i32 %reg1321, %reg1331 ; <i1> [#uses=1]
br i1 %cond270, label %bb9, label %bb6
bb6: ; preds = %bb5
%reg134 = load i32, i32* @dbglvl ; <i32> [#uses=1]
%cond271 = icmp sle i32 %reg134, 4 ; <i1> [#uses=1]
br i1 %cond271, label %bb8, label %bb7
bb7: ; preds = %bb6
%cast277 = getelementptr [4 x i8], [4 x i8]* @.LC10, i64 0, i64 0 ; <i8*> [#uses=0]
br label %bb8
bb8: ; preds = %bb7, %bb6
br label %UnifiedExitNode
bb9: ; preds = %bb5
%reg107-idxcast3 = sext i32 %fd to i64 ; <i64> [#uses=1]
%idx3 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast3, i32 3 ; <i8**> [#uses=1]
%reg1601 = load i8*, i8** %idx3 ; <i8*> [#uses=1]
%reg132-idxcast1 = sext i32 %reg1321 to i64 ; <i64> [#uses=1]
%idx4 = getelementptr i8, i8* %reg1601, i64 %reg132-idxcast1 ; <i8*> [#uses=1]
%reg1621 = load i8, i8* %idx4 ; <i8> [#uses=2]
%cast108 = zext i8 %reg1621 to i64 ; <i64> [#uses=0]
%reg157 = add i32 %reg1321, 1 ; <i32> [#uses=1]
%idx5 = getelementptr [3 x %spec_fd_t], [3 x %spec_fd_t]* @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2 ; <i32*> [#uses=1]
store i32 %reg157, i32* %idx5
%reg163 = load i32, i32* @dbglvl ; <i32> [#uses=1]
%cond272 = icmp sle i32 %reg163, 4 ; <i1> [#uses=1]
br i1 %cond272, label %bb11, label %bb10
bb10: ; preds = %bb9
%cast279 = getelementptr [4 x i8], [4 x i8]* @.LC11, i64 0, i64 0 ; <i8*> [#uses=0]
br label %bb11
bb11: ; preds = %bb10, %bb9
%cast291 = zext i8 %reg1621 to i32 ; <i32> [#uses=1]
br label %UnifiedExitNode
UnifiedExitNode: ; preds = %bb11, %bb8, %bb4
%UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ] ; <i32> [#uses=1]
ret i32 %UnifiedRetVal
}
declare i32 @puts(i8*)
declare i32 @printf(i8*, ...)
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