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Author SHA1 Message Date
Nadav Rotem 859366f93f 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.

llvm-svn: 166864
 2012-10-27 04:11:32 +00:00
Nadav Rotem afae78edab Refactor the VectorTargetTransformInfo interface. 
Add getCostXXX calls for different families of opcodes, such as casts, arithmetic, cmp, etc.

Port the LoopVectorizer to the new API.

The LoopVectorizer now finds instructions which will remain uniform after vectorization. It uses this information when calculating the cost of these instructions.

llvm-svn: 166836
 2012-10-26 23:49:28 +00:00
Nadav Rotem fcd1af344c Move the target-specific tests, which require specific backends, to dirs that only run if the target is present. 
llvm-svn: 166796
 2012-10-26 18:52:01 +00:00