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Author SHA1 Message Date
Dan Gohman
c2695eba57 Revert 72493 and replace it with a more conservative fix, for now: don't 
rewrite the comparison if there is any implicit extension or truncation
on the induction variable. I'm planning for IVUsers to eventually take
over some of the work of this code, and for it to be generalized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72496 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-27 21:10:47 +00:00
Dan Gohman
ead28bd04b In ChangeCompareStride, when the stride to be reused is truncated to 
a smaller type, promoted its offset back up to the type of the new
comparison. This fixes PR4222.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72493 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-27 20:00:18 +00:00