[LLVMdev] Crash in PBQP register allocator

[Lang Hames]

This looks like a bug in the PBQP solver. I'm currently investigating.

Cheers,
Lang.

On Thu, Nov 12, 2009 at 12:46 AM,  <Sachin.Punyani at microchip.com> wrote:
> Hi,
>
>
>
> Please see the two “.ll’ files attached.
>
>
>
> Command line used
>
> llc –march=pic16  –pre-RA-sched=list-burr –regalloc=pbqp new.obc
>
>
>
> The above test case crashes only when I use the combination of list-burr
> scheduler and pbqp register allocator. If any of them (scheduler or register
> allocator) is replaced with some alternate then I don’t see the crash.
>
>
>
> I could not figure out the reason. Please provide some pointers to reasons
> of the crash.
>
>
>
> Regards
>
> Sachin
>
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