[LLVMdev] Eliminate PHI for non-copyable registers

[Chris Lattner]

On Feb 16, 2009, at 8:03 AM, [Alex] wrote:

>
>
> Chris Lattner-2 wrote:
>>
>> and out of the registers and must be able to spill them, even if it
>> means going through another temporary register class.
>>
>
> But what if it cannot even be copied to another temporary register  
> class?

Then they are not allowed to be allocatable.

-Chris