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Author SHA1 Message Date
Eric Christopher
e6cbfa6b09 Speculatively revert r109705 since it seems to be causing some build bot 
angst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 01:25:38 +00:00
Dan Gohman
c6743207e2 Factor out some of the code for updating old SCEVUnknown values, and 
extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109705 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 00:17:55 +00:00