Comment # 14
on bug 82828
from Connor Abbott
(In reply to comment #13) > (In reply to comment #12) > > Created attachment 105630 [details] [review] [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] [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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