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3 Commits

Author SHA1 Message Date
Chris Lattner
7a6aa1a391 Enhance a bunch of transformations in instcombine to start generating 
exact/nsw/nuw shifts and have instcombine infer them when it can prove
that the relevant properties are true for a given shift without them.

Also, a variety of refactoring to use the new patternmatch logic thrown
in for good luck.  I believe that this takes care of a bunch of related
code quality issues attached to PR8862.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125267 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-10 05:36:31 +00:00
Chris Lattner
edc436bbf4 merge sext-2 into sext.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90293 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 05:34:35 +00:00
Chris Lattner
8bdcb25072 rename test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90292 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 05:32:33 +00:00