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; RUN: opt %s -simplify-libcalls -disable-output
; PR4645
define i32 @main() {
entry:
br label %if.then
lor.lhs.false: ; preds = %while.body
br i1 undef, label %if.then, label %for.cond
if.then: ; preds = %lor.lhs.false, %while.body
call void @exit(i32 1)
br label %for.cond
for.cond: ; preds = %for.end, %if.then, %lor.lhs.false
%j.0 = phi i32 [ %inc47, %for.end ], [ 0, %if.then ], [ 0, %lor.lhs.false ] ; <i32> [#uses=1]
unreachable
for.end: ; preds = %for.cond20
%inc47 = add i32 %j.0, 1 ; <i32> [#uses=1]
br label %for.cond
}
declare void @exit(i32)
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