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4 Commits

Author SHA1 Message Date
Lang Hames
030c4bfbc9 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94514 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-26 04:49:58 +00:00
Lang Hames
421c0733fd Fixed malformed -*- lines in PBQP headers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92830 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 08:53:34 +00:00
Lang Hames
caaf120a67 Added legal stuff, fixed some formatting issues. Removed the graph generator stuff as it was only meant for debugging the solver. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78359 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-07 00:25:12 +00:00
Lang Hames
6699fb2709 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78354 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-06 23:32:48 +00:00