[Bug 82828] Regression: Crash in 3Dmark2001

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82828

--- Comment #14 from Connor Abbott <cwabbott0 at gmail.com> ---
(In reply to comment #13)
> (In reply to comment #12)
> > Created attachment 105630 [details] [review] [review]
> > another debugging patch
> > 
> > Ok, it looks like the problem is that node 0's q_total is bogus, which means
> > it never even gets considered for optimistic coloring. To help me figure out
> > why this is, can you apply this patch to master (not on top of the other
> > patch) and tell me the output of the piglit test now?
> 
> On (In reply to comment #12)
> > Created attachment 105630 [details] [review] [review]
> > another debugging patch
> > 
> > Ok, it looks like the problem is that node 0's q_total is bogus, which means
> > it never even gets considered for optimistic coloring. To help me figure out
> > why this is, can you apply this patch to master (not on top of the other
> > patch) and tell me the output of the piglit test now?
> 
> I'm not sure if this matters, but r300g pre-allocates the input registers
> before calling ra_allocate_no_spills().

I think there are no input registers in this case (there's a NumInputs = 0
somewhere in the backtrace) so there aren't any pre-allocated nodes here.

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