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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+70
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-70/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* Preserve loop metadata when folding branches to a common destination.Michael Kuperstein2016-12-161-0/+28
| | | | | | Differential Revision: https://reviews.llvm.org/D27830 llvm-svn: 289992
* [simplifycfg][loop-simplify] Preserve loop metadata in 2 transformations.Florian Hahn2016-11-181-0/+42
insertUniqueBackedgeBlock in lib/Transforms/Utils/LoopSimplify.cpp now propagates existing llvm.loop metadata to newly the added backedge. llvm::TryToSimplifyUncondBranchFromEmptyBlock in lib/Transforms/Utils/Local.cpp now propagates existing llvm.loop metadata to the branch instructions in the predecessor blocks of the empty block that is removed. Differential Revision: https://reviews.llvm.org/D26495 llvm-svn: 287341
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