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Author SHA1 Message Date
Lang Hames 090c7e82dd 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
 2010-01-26 04:49:58 +00:00
Lang Hames 68dd9c7dd7 Fixed malformed -*- lines in PBQP headers. 
llvm-svn: 92830
 2010-01-06 08:53:34 +00:00
Lang Hames 8f0d67536e Added legal stuff, fixed some formatting issues. Removed the graph generator stuff as it was only meant for debugging the solver. 
llvm-svn: 78359
 2009-08-07 00:25:12 +00:00
Lang Hames 88fae6f9c9 New C++ PBQP solver. Currently about as fast (read _slow_) as the old C based solver, but I'll be working to improve that. The PBQP allocator has been updated to use the new solver. 
llvm-svn: 78354
 2009-08-06 23:32:48 +00:00