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jakobsen
2011 Apr 26
2
[LLVMdev] Register pairing in PBQP
Hi.
Im currently investigating LLVM's implementation of PBQP as a part of a
bachelors thesis im doing on register allocation for regular architectures.
In particullar, im looking at the possibility for improving the spill rate
of PBQP for a particular DSP architecture, by using register pairing.
>From reading the source code of lib/CodeGen/RegAllocPBQP.cpp i conclude
that support for
2011 Apr 27
0
[LLVMdev] Register pairing in PBQP
...uld add your new PBQPBuilder to CodeGen so that other target writers can
benefit from it.
See lib/CodeGen/RegAllocPBQP.cpp for examples of how to write PBQPBuilders,
and I'm happy to answer any questions, time permitting. :)
Cheers,
Lang.
On Wed, Apr 27, 2011 at 5:59 PM, Jakob Stengård <jakobste at kth.se> wrote:
> >Can you describe your pairing constraint in more detail? I've seen a few
> different kinds of "pairing", and the approach to supporting them can vary.
>
> The stuff im currently looking at is a constraint between address-registers
> and modif...