[LLVMdev] Supporting Complex Register Allocation Constraints (PBQP Allocator Status Update)

[Lang Hames]

>
> * This claim is only partially tested, but I'm running the allocator right
> now with the base constraints plus an extension which adds coalescing costs
> and it's just passed CINT2006 without error. Not bad given that the
> coalescing extension only took a couple of hours to write
>

 Following up on this footnote - The PBQPBuilderWithCoalescing builder is
now in the mainline. If anyone's looking for an example of how to add custom
constraints this is a good one.

Cheers,
Lang.
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