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3 Commits

Author SHA1 Message Date
Nadav Rotem
6f3d81a929 CostModel: Change the default target-independent implementation for finding 
the cost of arithmetic functions. We now assume that the cost of arithmetic
operations that are marked as Legal or Promote is low, but ops that are
marked as custom are higher.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171002 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-12-23 17:31:23 +00:00
Nadav Rotem
e57b2cbce6 LoopVectorize: Preserve NSW, NUW and IsExact flags. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167174 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-31 21:40:39 +00:00
Nadav Rotem
f065a84677 1. Fix a bug in getTypeConversion. When a *simple* type is split, we need to return the type of the split result. 
2. Change the maximum vectorization width from 4 to 8.
3. A test for both.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166864 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-27 04:11:32 +00:00