; RUN: opt < %s -lcssa -disable-output ; RUN: opt < %s -passes=lcssa -disable-output ; PR977 ; END. define void @process_backlog() { entry: br label %loopentry.preheader loopentry.preheader: ; preds = %dead_block_after_break, %entry %work.0.ph = phi i32 [ %inc, %dead_block_after_break ], [ 0, %entry ] ; <i32> [#uses=0] br label %loopentry loopentry: ; preds = %endif.1, %loopentry.preheader br i1 false, label %then.i, label %loopentry.__skb_dequeue67.exit_crit_edge loopentry.__skb_dequeue67.exit_crit_edge: ; preds = %loopentry br label %__skb_dequeue67.exit then.i: ; preds = %loopentry br label %__skb_dequeue67.exit __skb_dequeue67.exit: ; preds = %then.i, %loopentry.__skb_dequeue67.exit_crit_edge br i1 false, label %then.0, label %__skb_dequeue67.exit.endif.0_crit_edge __skb_dequeue67.exit.endif.0_crit_edge: ; preds = %__skb_dequeue67.exit br label %endif.0 then.0: ; preds = %__skb_dequeue67.exit br label %job_done dead_block_after_goto: ; No predecessors! unreachable endif.0: ; preds = %__skb_dequeue67.exit.endif.0_crit_edge br i1 false, label %then.0.i, label %endif.0.endif.0.i_crit_edge endif.0.endif.0.i_crit_edge: ; preds = %endif.0 br label %endif.0.i then.0.i: ; preds = %endif.0 br label %endif.0.i endif.0.i: ; preds = %then.0.i, %endif.0.endif.0.i_crit_edge br i1 false, label %then.i.i, label %endif.0.i.skb_bond.exit.i_crit_edge endif.0.i.skb_bond.exit.i_crit_edge: ; preds = %endif.0.i br label %skb_bond.exit.i then.i.i: ; preds = %endif.0.i br label %skb_bond.exit.i skb_bond.exit.i: ; preds = %then.i.i, %endif.0.i.skb_bond.exit.i_crit_edge br label %loopentry.0.i loopentry.0.i: ; preds = %loopentry.0.i.backedge, %skb_bond.exit.i br i1 false, label %loopentry.0.i.no_exit.0.i_crit_edge, label %loopentry.0.i.loopexit.0.i_crit_edge loopentry.0.i.loopexit.0.i_crit_edge: ; preds = %loopentry.0.i br label %loopexit.0.i loopentry.0.i.no_exit.0.i_crit_edge: ; preds = %loopentry.0.i br label %no_exit.0.i no_exit.0.i: ; preds = %then.3.i.no_exit.0.i_crit_edge, %loopentry.0.i.no_exit.0.i_crit_edge br i1 false, label %no_exit.0.i.shortcirc_done.0.i_crit_edge, label %shortcirc_next.0.i no_exit.0.i.shortcirc_done.0.i_crit_edge: ; preds = %no_exit.0.i br label %shortcirc_done.0.i shortcirc_next.0.i: ; preds = %no_exit.0.i br label %shortcirc_done.0.i shortcirc_done.0.i: ; preds = %shortcirc_next.0.i, %no_exit.0.i.shortcirc_done.0.i_crit_edge br i1 false, label %then.1.i, label %endif.1.i then.1.i: ; preds = %shortcirc_done.0.i br i1 false, label %then.2.i, label %then.1.i.endif.2.i_crit_edge then.1.i.endif.2.i_crit_edge: ; preds = %then.1.i br label %endif.2.i then.2.i: ; preds = %then.1.i br i1 false, label %then.3.i, label %else.0.i then.3.i: ; preds = %then.2.i br i1 false, label %then.3.i.no_exit.0.i_crit_edge, label %then.3.i.loopexit.0.i_crit_edge then.3.i.loopexit.0.i_crit_edge: ; preds = %then.3.i br label %loopexit.0.i then.3.i.no_exit.0.i_crit_edge: ; preds = %then.3.i br label %no_exit.0.i else.0.i: ; preds = %then.2.i br label %endif.2.i endif.3.i: ; No predecessors! unreachable endif.2.i: ; preds = %else.0.i, %then.1.i.endif.2.i_crit_edge br label %loopentry.0.i.backedge endif.1.i: ; preds = %shortcirc_done.0.i br label %loopentry.0.i.backedge loopentry.0.i.backedge: ; preds = %endif.1.i, %endif.2.i br label %loopentry.0.i loopexit.0.i: ; preds = %then.3.i.loopexit.0.i_crit_edge, %loopentry.0.i.loopexit.0.i_crit_edge br label %loopentry.1.i loopentry.1.i: ; preds = %loopentry.1.i.backedge, %loopexit.0.i br i1 false, label %loopentry.1.i.no_exit.1.i_crit_edge, label %loopentry.1.i.loopexit.1.i_crit_edge loopentry.1.i.loopexit.1.i_crit_edge: ; preds = %loopentry.1.i br label %loopexit.1.i loopentry.1.i.no_exit.1.i_crit_edge: ; preds = %loopentry.1.i br label %no_exit.1.i no_exit.1.i: ; preds = %then.6.i.no_exit.1.i_crit_edge, %loopentry.1.i.no_exit.1.i_crit_edge br i1 false, label %shortcirc_next.1.i, label %no_exit.1.i.shortcirc_done.1.i_crit_edge no_exit.1.i.shortcirc_done.1.i_crit_edge: ; preds = %no_exit.1.i br label %shortcirc_done.1.i shortcirc_next.1.i: ; preds = %no_exit.1.i br i1 false, label %shortcirc_next.1.i.shortcirc_done.2.i_crit_edge, label %shortcirc_next.2.i shortcirc_next.1.i.shortcirc_done.2.i_crit_edge: ; preds = %shortcirc_next.1.i br label %shortcirc_done.2.i shortcirc_next.2.i: ; preds = %shortcirc_next.1.i br label %shortcirc_done.2.i shortcirc_done.2.i: ; preds = %shortcirc_next.2.i, %shortcirc_next.1.i.shortcirc_done.2.i_crit_edge br label %shortcirc_done.1.i shortcirc_done.1.i: ; preds = %shortcirc_done.2.i, %no_exit.1.i.shortcirc_done.1.i_crit_edge br i1 false, label %then.4.i, label %endif.4.i then.4.i: ; preds = %shortcirc_done.1.i br i1 false, label %then.5.i, label %then.4.i.endif.5.i_crit_edge then.4.i.endif.5.i_crit_edge: ; preds = %then.4.i br label %endif.5.i then.5.i: ; preds = %then.4.i br i1 false, label %then.6.i, label %else.1.i then.6.i: ; preds = %then.5.i br i1 false, label %then.6.i.no_exit.1.i_crit_edge, label %then.6.i.loopexit.1.i_crit_edge then.6.i.loopexit.1.i_crit_edge: ; preds = %then.6.i br label %loopexit.1.i then.6.i.no_exit.1.i_crit_edge: ; preds = %then.6.i br label %no_exit.1.i else.1.i: ; preds = %then.5.i br label %endif.5.i endif.6.i: ; No predecessors! unreachable endif.5.i: ; preds = %else.1.i, %then.4.i.endif.5.i_crit_edge br label %loopentry.1.i.backedge endif.4.i: ; preds = %shortcirc_done.1.i br label %loopentry.1.i.backedge loopentry.1.i.backedge: ; preds = %endif.4.i, %endif.5.i br label %loopentry.1.i loopexit.1.i: ; preds = %then.6.i.loopexit.1.i_crit_edge, %loopentry.1.i.loopexit.1.i_crit_edge br i1 false, label %then.7.i, label %else.2.i then.7.i: ; preds = %loopexit.1.i br i1 false, label %then.8.i, label %else.3.i then.8.i: ; preds = %then.7.i br label %netif_receive_skb.exit else.3.i: ; preds = %then.7.i br label %netif_receive_skb.exit endif.8.i: ; No predecessors! unreachable else.2.i: ; preds = %loopexit.1.i br i1 false, label %else.2.i.shortcirc_done.i.i_crit_edge, label %shortcirc_next.i.i else.2.i.shortcirc_done.i.i_crit_edge: ; preds = %else.2.i br label %shortcirc_done.i.i shortcirc_next.i.i: ; preds = %else.2.i br label %shortcirc_done.i.i shortcirc_done.i.i: ; preds = %shortcirc_next.i.i, %else.2.i.shortcirc_done.i.i_crit_edge br i1 false, label %then.i1.i, label %shortcirc_done.i.i.kfree_skb65.exit.i_crit_edge shortcirc_done.i.i.kfree_skb65.exit.i_crit_edge: ; preds = %shortcirc_done.i.i br label %kfree_skb65.exit.i then.i1.i: ; preds = %shortcirc_done.i.i br label %kfree_skb65.exit.i kfree_skb65.exit.i: ; preds = %then.i1.i, %shortcirc_done.i.i.kfree_skb65.exit.i_crit_edge br label %netif_receive_skb.exit netif_receive_skb.exit: ; preds = %kfree_skb65.exit.i, %else.3.i, %then.8.i br i1 false, label %then.i1, label %netif_receive_skb.exit.dev_put69.exit_crit_edge netif_receive_skb.exit.dev_put69.exit_crit_edge: ; preds = %netif_receive_skb.exit br label %dev_put69.exit then.i1: ; preds = %netif_receive_skb.exit br label %dev_put69.exit dev_put69.exit: ; preds = %then.i1, %netif_receive_skb.exit.dev_put69.exit_crit_edge %inc = add i32 0, 1 ; <i32> [#uses=1] br i1 false, label %dev_put69.exit.shortcirc_done_crit_edge, label %shortcirc_next dev_put69.exit.shortcirc_done_crit_edge: ; preds = %dev_put69.exit br label %shortcirc_done shortcirc_next: ; preds = %dev_put69.exit br label %shortcirc_done shortcirc_done: ; preds = %shortcirc_next, %dev_put69.exit.shortcirc_done_crit_edge br i1 false, label %then.1, label %endif.1 then.1: ; preds = %shortcirc_done ret void dead_block_after_break: ; No predecessors! br label %loopentry.preheader endif.1: ; preds = %shortcirc_done br label %loopentry loopexit: ; No predecessors! unreachable after_ret.0: ; No predecessors! br label %job_done job_done: ; preds = %after_ret.0, %then.0 br label %loopentry.i loopentry.i: ; preds = %no_exit.i, %job_done br i1 false, label %no_exit.i, label %clear_bit62.exit no_exit.i: ; preds = %loopentry.i br label %loopentry.i clear_bit62.exit: ; preds = %loopentry.i br i1 false, label %then.2, label %endif.2 then.2: ; preds = %clear_bit62.exit ret void endif.2: ; preds = %clear_bit62.exit ret void after_ret.1: ; No predecessors! ret void return: ; No predecessors! unreachable }