[PATCH] D13197: AMDGPU: Move SIFixSGPRLiveRanges to be a regalloc pass

[Andrew Trick via llvm-commits]

> On Oct 6, 2015, at 1:10 PM, Matt Arsenault <arsenm2 at gmail.com> wrote:
> 
> 
>> On Oct 6, 2015, at 1:04 PM, Andrew Trick via llvm-commits <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>> wrote:
>> 
>> Maybe a dumb question, but do you actually need the TwoAddress pass for your target? 
> 
> We do actually use it for translating a 2-address mad instruction into 3. It also is responsible for eliminating reg_sequence, which is very important for us.
> 
> -Matt

FWIW, you might be able to turn EnableRescheduling into a target hook. If you don't need that functionality, then you could probably run TwoAddress without LiveVariables or Kill flag updating.

Andy
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