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; RUN: llvm-upgrade < %s | llvm-as | opt -lcssa -disable-output
; PR977
declare int %opost_block()
void %write_chan() {
entry:
br bool false, label %shortcirc_next.0, label %shortcirc_done.0
shortcirc_next.0: ; preds = %entry
br label %shortcirc_done.0
shortcirc_done.0: ; preds = %shortcirc_next.0, %entry
br bool false, label %shortcirc_next.1, label %shortcirc_done.1
shortcirc_next.1: ; preds = %shortcirc_done.0
br label %shortcirc_done.1
shortcirc_done.1: ; preds = %shortcirc_next.1, %shortcirc_done.0
br bool false, label %then.0, label %endif.0
then.0: ; preds = %shortcirc_done.1
br bool false, label %then.1, label %endif.1
then.1: ; preds = %then.0
br label %return
after_ret.0: ; No predecessors!
br label %endif.1
endif.1: ; preds = %after_ret.0, %then.0
br label %endif.0
endif.0: ; preds = %endif.1, %shortcirc_done.1
br label %loopentry.0
loopentry.0: ; preds = %endif.12, %endif.0
br bool false, label %then.2, label %endif.2
then.2: ; preds = %loopentry.0
br label %loopexit.0
dead_block_after_break.0: ; No predecessors!
br label %endif.2
endif.2: ; preds = %dead_block_after_break.0, %loopentry.0
br bool false, label %shortcirc_done.2, label %shortcirc_next.2
shortcirc_next.2: ; preds = %endif.2
br bool false, label %shortcirc_next.3, label %shortcirc_done.3
shortcirc_next.3: ; preds = %shortcirc_next.2
br label %shortcirc_done.3
shortcirc_done.3: ; preds = %shortcirc_next.3, %shortcirc_next.2
br label %shortcirc_done.2
shortcirc_done.2: ; preds = %shortcirc_done.3, %endif.2
br bool false, label %then.3, label %endif.3
then.3: ; preds = %shortcirc_done.2
br label %loopexit.0
dead_block_after_break.1: ; No predecessors!
br label %endif.3
endif.3: ; preds = %dead_block_after_break.1, %shortcirc_done.2
br bool false, label %shortcirc_next.4, label %shortcirc_done.4
shortcirc_next.4: ; preds = %endif.3
br label %shortcirc_done.4
shortcirc_done.4: ; preds = %shortcirc_next.4, %endif.3
br bool false, label %then.4, label %else
then.4: ; preds = %shortcirc_done.4
br label %loopentry.1
loopentry.1: ; preds = %endif.8, %then.4
br bool false, label %no_exit, label %loopexit.1
no_exit: ; preds = %loopentry.1
%tmp.94 = call int %opost_block( ) ; <int> [#uses=1]
br bool false, label %then.5, label %endif.5
then.5: ; preds = %no_exit
br bool false, label %then.6, label %endif.6
then.6: ; preds = %then.5
br label %loopexit.1
dead_block_after_break.2: ; No predecessors!
br label %endif.6
endif.6: ; preds = %dead_block_after_break.2, %then.5
br label %break_out
dead_block_after_goto.0: ; No predecessors!
br label %endif.5
endif.5: ; preds = %dead_block_after_goto.0, %no_exit
br bool false, label %then.7, label %endif.7
then.7: ; preds = %endif.5
br label %loopexit.1
dead_block_after_break.3: ; No predecessors!
br label %endif.7
endif.7: ; preds = %dead_block_after_break.3, %endif.5
switch uint 1, label %switchexit [
uint 4, label %label.2
uint 2, label %label.1
uint 1, label %label.0
]
label.0: ; preds = %endif.7
br label %switchexit
dead_block_after_break.4: ; No predecessors!
br label %label.1
label.1: ; preds = %dead_block_after_break.4, %endif.7
br label %switchexit
dead_block_after_break.5: ; No predecessors!
br label %label.2
label.2: ; preds = %dead_block_after_break.5, %endif.7
br label %switchexit
dead_block_after_break.6: ; No predecessors!
br label %switchexit
switchexit: ; preds = %dead_block_after_break.6, %label.2, %label.1, %label.0, %endif.7
br bool false, label %then.8, label %endif.8
then.8: ; preds = %switchexit
br label %loopexit.1
dead_block_after_break.7: ; No predecessors!
br label %endif.8
endif.8: ; preds = %dead_block_after_break.7, %switchexit
br label %loopentry.1
loopexit.1: ; preds = %then.8, %then.7, %then.6, %loopentry.1
br bool false, label %then.9, label %endif.9
then.9: ; preds = %loopexit.1
br label %endif.9
endif.9: ; preds = %then.9, %loopexit.1
br label %endif.4
else: ; preds = %shortcirc_done.4
br bool false, label %then.10, label %endif.10
then.10: ; preds = %else
br label %break_out
dead_block_after_goto.1: ; No predecessors!
br label %endif.10
endif.10: ; preds = %dead_block_after_goto.1, %else
br label %endif.4
endif.4: ; preds = %endif.10, %endif.9
br bool false, label %then.11, label %endif.11
then.11: ; preds = %endif.4
br label %loopexit.0
dead_block_after_break.8: ; No predecessors!
br label %endif.11
endif.11: ; preds = %dead_block_after_break.8, %endif.4
br bool false, label %then.12, label %endif.12
then.12: ; preds = %endif.11
br label %loopexit.0
dead_block_after_break.9: ; No predecessors!
br label %endif.12
endif.12: ; preds = %dead_block_after_break.9, %endif.11
br label %loopentry.0
loopexit.0: ; preds = %then.12, %then.11, %then.3, %then.2
br label %break_out
break_out: ; preds = %loopexit.0, %then.10, %endif.6
%retval.3 = phi int [ 0, %loopexit.0 ], [ %tmp.94, %endif.6 ], [ 0, %then.10 ] ; <int> [#uses=0]
br bool false, label %cond_true, label %cond_false
cond_true: ; preds = %break_out
br label %cond_continue
cond_false: ; preds = %break_out
br label %cond_continue
cond_continue: ; preds = %cond_false, %cond_true
br label %return
after_ret.1: ; No predecessors!
br label %return
return: ; preds = %after_ret.1, %cond_continue, %then.1
ret void
}
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