[LLVMdev] Re: InstructionSelectBasicBlock question

[Vladimir Prus]

Vladimir Prus wrote:


> I have two questions about the above method of the SelectionDAGISel class.
> 
> 1. The overrides in PPCDAGToDAGISel and in I64DAGToDAGISel are identical
> (except for  PPCISD::FIRST_NUMBER vs. IA64ISD::FIRST_NUMBER).
> Maybe, this means that it would be better if SelectionDAGISel had default
> implementation? That would remove this code duplication.

And the Sparc backend has a much simpler implementation, so it seems that
the huge loop in PPC and I64 implementation is just no longer needed?

- Volodya