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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+34
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-34/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* Update MemorySSA in LoopUnswitch.Alina Sbirlea2018-09-111-0/+1
| | | | | | | | | | | | Summary: Update MemorySSA in old LoopUnswitch pass. Actual dependency and update is disabled by default. Subscribers: sanjoy, jlebar, Prazek, llvm-commits Differential Revision: https://reviews.llvm.org/D45301 llvm-svn: 341984
* [LoopUnswitch] Fix SCEV invalidation in unswitchingMax Kazantsev2018-05-231-0/+33
Loop unswitching makes substantial changes to a loop that can also affect cached SCEV info in its outer loops as well, but it only cares to invalidate SCEV cache for the innermost loop in case of full unswitching and does not invalidate anything at all in case of trivial unswitching. As result, we may end up with incorrect data in cache. Differential Revision: https://reviews.llvm.org/D46045 Reviewed By: mzolotukhin llvm-svn: 333072
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