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Commit a44274cb authored by Chris Lattner's avatar Chris Lattner
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Step #3 to improving trip count analysis: If we fold 

a + {b,+,stride} into {a+b,+,stride}  (because a is LIV),
then the resultant AddRec is NUW/NSW if the client says it
is.

llvm-svn: 123133
parent dc000fbf
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