[LLVMdev] DFAPacketizer with StateTrans != 0 Assertion

[sam]

Hi Ivan,

The assertion was happening because I wasn't checking after the first 
attempt failed. The first packet was failing and so it was ended, and 
then the packetizer attempted to add it to the next packet without 
checking for available resources. However this highlights probably the 
real problem - my packetizer is unable to find resources for the first 
instruction, or any of my instructions for that matter. Have you ever 
seen this problem before?

thanks
sam

On 12/06/12 15:48, Ivan Llopard [via LLVM] wrote:
> Hi Sam,
>
> On 12/06/2012 15:33, sam wrote:
> > Hi,
> >
> > I'm trying to get the DFAPacketizer to work for my target but with any
> > instruction I get the
> > 'Assertion `CachedTable.count(StateTrans) != 0' failed' error and it 
> crashes
> > out before packeting a single instruction.
>
> Do you reserve some resource without verification?
>
> Note that reserveResources() should be called iff canReserveResources()
> is true (the call order is important here) even for the trivial case (0
> instructions in the packet). See VLIWPacketizerList as an example on how
> to use the API's.
>
> Ivan
>
> >
> > I have a *GenDFAPacketizer.inc file and my packetizer pass checks 
> that the
> > table is not empty before proceeding. I also have a schedule file 
> with my
> > functional units and itineraries listed. Can anyone think of what I 
> may have
> > missed to cause this error?
> >
> > Cheers,
> > sam
> >
> > --
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