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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+17
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-17/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [PGO] add MST min edge selection heuristic to ensure non-zero entry countXinliang David Li2017-12-181-0/+17
| | | | | | Differential Revision: http://reviews.llvm.org/D41059 llvm-svn: 320998
* Revert r320104: infinite loop profiling bug fixXinliang David Li2017-12-081-18/+0
| | | | | | | | | | | Causes unexpected memory issue with New PM this time. The new PM invalidates BPI but not BFI, leaving the reference to BPI from BFI invalid. Abandon this patch. There is a more general solution which also handles runtime infinite loop (but not statically). llvm-svn: 320180
* [PGO] detect infinite loop and form MST properlyXinliang David Li2017-12-071-0/+18
| | | | | | Differential Revision: http://reviews.llvm.org/D40873 llvm-svn: 320104
* Revert r319794: [PGO] detect infinite loop and form MST properly: memory ↵Xinliang David Li2017-12-051-18/+0
| | | | | | leak problem llvm-svn: 319841
* [PGO] detect infinite loop and form MST properlyXinliang David Li2017-12-051-0/+18
Differential Revision: http://reviews.llvm.org/D40702 llvm-svn: 319794
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