llvm dev - Mar 2018 - [RFC] I'd like to move RecurrenceDescriptor and LoopDescriptor in LoopUitls.h/.cpp from Transform/Utils tree to Analysis/Utils tree

Hi all,

I'm in the process of moving LoopVectorizationLegality out of
LoopVectorize.cpp in order to make it reusable. For example, other
transformations can change the behavior depending on whether the loop is
vectorizable or not.
Ideally, such analysis type code belongs to Analysis tree. One of the blocking
factor is its use of RecurrenceDescriptor/InductionDescriptor, defined in
Transform/Utils/LoopUtils.h.

Anything I should know before attempting to move those Descriptors under
Analysis/Utils? Like known dependencies making them very hard to move to
Analysis tree?
Recurrence and Inductions are again analysis type stuff. They really belong to
Analysis tree, in my opinion.

Thanks,
Hideki Saito


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