[LLVMdev] Resolving branch instr with label "$BB0_-1"

[girish gulawani]

Hi Aries.
Thanks very much!

Precisely this is the situation! There're two consecutive branches (br1cond and br2uncond). Inside of AnalyzeBranch, there's an opcode swap of br2uncond (ex. j_foward to j_backward). There I do BuildMI (newOpcode) and followed by br2uncond->eraseFromParent(). This results in br1cond loosing it's label/offset. How could I resolve this?

Best regards,
Girish.

May be you have branched to a BB which has been deleted.
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>On 24 January 2012 20:16, girish gulawani <girishvg at yahoo.com> wrote:
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>>
>>Hello All.
>>On a particular target the back-end generates an instruction like:
>>beqz      r2, "$BB0_-1"
>>
>> 
>>Is it a back-end specific issue? Could someone please help me figure out how this gets resolved? What confuses me is, all other branches are correctly labelled and resolved! 
>>
>>
>>Thanks.Girish.
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>>
>>_______________________________________________
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>>LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
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>>
>>
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>-- 
>Sincerely,
>
>Aries Wu
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