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Commit 090c7e82 authored by Lang Hames's avatar Lang Hames
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New PBQP solver. 

* Fixed a reduction bug which occasionally led to infinite-cost (invalid)
  register allocation solutions despite the existence finite-cost solutions.
* Significantly reduced memory usage (>50% reduction).
* Simplified a lot of the solver code.

llvm-svn: 94514
parent b85f0ab9
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