[LLVMdev] Assert in LiveInterval update

[Lang Hames]

Hi Jakob, Sergei,

I've updated getLastUseBefore in r163685. I'm still looking into a couple
of errors, but I suspect that these are due to my build configuration,
rather than the patch.

Sergei - could you let me know if this fixes your issue? Thanks again for
all of your work tracking this down.


> It is best to avoid the MCRegUnitRootIterator+MCSuperRegIterator
> combination because the set of super-registers can be quite large on ARM.
>

Done. I've used TRI.hasRegUnit as suggested. Thanks for the advice!

Cheers,
Lang.
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