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; REQUIRES: asserts
; RUN: opt < %s -passes='simple-loop-unswitch<nontrivial>' -disable-output
; Make sure we don't crash due to a dangling use of %tmp2 in bb7.
define void @test.use_in_dead_block(i1 %arg1, i1 %arg2) {
bb1:
br label %bb2
bb2: ; preds = %bb4, %bb1
%tmp1 = phi i64 [ 0, %bb4 ], [ 42, %bb1 ]
br i1 %arg1, label %bb3, label %bb6
bb3: ; preds = %bb2
br i1 %arg2, label %bb5, label %bb4
bb4: ; preds = %bb3
%tmp2 = add i32 1, 1
br label %bb2
bb5: ; preds = %bb3
ret void
bb6: ; preds = %bb2
%tmp3 = add i64 %tmp1, 1
ret void
bb7: ; No predecessors!
%tmp4 = add i32 %tmp2, 1
ret void
}
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