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Author SHA1 Message Date
Evan Cheng
f35fd547ac - Teach CanEvaluateInDifferentType of this xform: sext (zext ty1), ty2 -> zext ty2 
- Looking at the number of sign bits of the a sext instruction to determine  whether new trunc + sext pair should be added when its source is being evaluated in a different type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62263 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-15 17:01:23 +00:00