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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+28
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-28/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [PM] Teach LoopDeletion to correctly update the LPM when loops areChandler Carruth2017-01-181-1/+1
| | | | | | | | | deleted. I've expanded its test coverage a bit including adding one test that will crash clearly without this change. llvm-svn: 292332
* [PM] Port Dead Loop Deletion Pass to the new PMJun Bum Lim2016-07-141-0/+1
| | | | | | | | | | | | Summary: Port Dead Loop Deletion Pass to the new pass manager. Reviewers: silvas, davide Subscribers: llvm-commits, sanjoy, mcrosier Differential Revision: https://reviews.llvm.org/D21483 llvm-svn: 275453
* Make LoopDeletion check the maximum backedge taken count, rather than theDan Gohman2009-10-231-0/+27
exact backedge taken count, when checking for infinite loops. This allows it to delete loops with multiple exit conditions. llvm-svn: 84952
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