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[SCEV] NFC. Extract caching logic from the SCEVRewriteVisitor into the CachingSCEVVisitor

Authored by igor-laevsky on Feb 9 2017, 7:06 AM.



Sometimes SCEV caching logic is required for the non-rewriting visitors ( . I've extracted it into single abstract place in order to not duplicate it multiple times.

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igor-laevsky created this revision.Feb 9 2017, 7:06 AM
igor-laevsky abandoned this revision.Feb 10 2017, 6:03 AM