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; RUN: opt < %s -lcssa -disable-output
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; PR28608
; Check that we don't crash on this test.
define void @foo() {
entry:
br label %bb1
bb1:
br label %bb2
bb2:
%x = phi i32 [ undef, %bb5 ], [ undef, %bb1 ]
br i1 undef, label %bb3, label %bb6
bb3:
br i1 undef, label %bb5, label %bb4
bb4:
br label %bb6
bb5:
br label %bb2
bb6:
br label %bb1
exit:
%y = add i32 0, %x
ret void
}
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