; 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)