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Author SHA1 Message Date
Evan Cheng d0d0317b9a Committing a good chunk of the pre-register allocation live interval splitting pass. It's handling simple cases and appear to do good things. Next: avoid splitting an interval multiple times; renumber registers when possible; record stack slot live intervals for coloring; rematerialize defs when possible. 
llvm-svn: 58044
 2008-10-23 20:43:13 +00:00
Evan Cheng 7e721ecd21 Add skeleton for the pre-register allocation live interval splitting pass. 
llvm-svn: 57847
 2008-10-20 21:44:59 +00:00