[llvm-commits] register subclass patch!

[Dan Gohman]

On Mar 18, 2009, at 6:50 PM, Bruno Cardoso Lopes wrote:

> Hi Dan,
>
>> Instead of creating a separate register class, could you use just
>> FGR32 and then mark the odd registers as non-allocatable
>> when the ABI requires it?
>
> By marking them non-allocatable you mean making changes to
> allocation_order_begin/end so the odd registers doesn't get allocated
> by getAllocatableSetForRC, right?
> It seems a better approach to me indeed :)

Yes. That and making getReservedRegs do the right thing.

Dan