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new testcase for pr670

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24507 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2005-11-29 01:06:51 +00:00
parent 4c286c3731
commit cae34910c9
1 changed files with 88 additions and 0 deletions
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test/Transforms/Mem2Reg/2005-11-28-Crash.ll Normal file
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; RUN: llvm-as < %s | opt -mem2reg -disable-output
; PR670
void %printk(int, ...) {
entry:
%flags = alloca uint ; <uint*> [#uses=2]
br bool false, label %then.0, label %endif.0
then.0: ; preds = %entry
br label %endif.0
endif.0: ; preds = %then.0, %entry
store uint 0, uint* %flags
br label %loopentry
loopentry: ; preds = %endif.3, %endif.0
br bool false, label %no_exit, label %loopexit
no_exit: ; preds = %loopentry
br bool false, label %then.1, label %endif.1
then.1: ; preds = %no_exit
br bool false, label %shortcirc_done.0, label %shortcirc_next.0
shortcirc_next.0: ; preds = %then.1
br label %shortcirc_done.0
shortcirc_done.0: ; preds = %shortcirc_next.0, %then.1
br bool false, label %shortcirc_done.1, label %shortcirc_next.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 %shortcirc_done.2, label %shortcirc_next.2
shortcirc_next.2: ; preds = %shortcirc_done.1
br label %shortcirc_done.2
shortcirc_done.2: ; preds = %shortcirc_next.2, %shortcirc_done.1
br bool false, label %then.2, label %endif.2
then.2: ; preds = %shortcirc_done.2
br label %endif.2
endif.2: ; preds = %then.2, %shortcirc_done.2
br label %endif.1
endif.1: ; preds = %endif.2, %no_exit
br bool false, label %then.3, label %endif.3
then.3: ; preds = %endif.1
br label %endif.3
endif.3: ; preds = %then.3, %endif.1
br label %loopentry
loopexit: ; preds = %loopentry
br label %endif.4
then.4: ; No predecessors!
%tmp.61 = load uint* %flags ; <uint> [#uses=0]
br label %out
dead_block_after_goto: ; No predecessors!
br label %endif.4
endif.4: ; preds = %dead_block_after_goto, %loopexit
br bool false, label %then.5, label %else
then.5: ; preds = %endif.4
br label %endif.5
else: ; preds = %endif.4
br label %endif.5
endif.5: ; preds = %else, %then.5
br label %out
out: ; preds = %endif.5, %then.4
br label %return
after_ret: ; No predecessors!
br label %return
return: ; preds = %after_ret, %out
ret void
}