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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+137
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-137/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [IndVars] Eliminate op.with.overflow when possible (re-apply)Sanjoy Das2016-05-291-0/+137
| | | | | | | | | | | | | | | | | | | Summary: If we can prove that an op.with.overflow intrinsic does not overflow, we can get rid of the intrinsic, and replace it with non-wrapping arithmetic. This was first checked in at r265913 but reverted in r265950 because it exposed some issues around how SCEV handled post-inc add recurrences. Those issues have now been fixed. Reviewers: atrick, regehr Subscribers: sanjoy, mcrosier, llvm-commits Differential Revision: http://reviews.llvm.org/D18685 llvm-svn: 271153
* This reverts commit r265913 and r265912Sanjoy Das2016-04-111-137/+0
| | | | | | | | | See PR27315 r265913: "[IndVars] Eliminate op.with.overflow when possible" r265912: "[SCEV] See through op.with.overflow intrinsics" llvm-svn: 265950
* [IndVars] Eliminate op.with.overflow when possibleSanjoy Das2016-04-101-0/+137
Summary: If we can prove that an op.with.overflow intrinsic does not overflow, we can get rid of the intrinsic, and replace it with non-wrapping arithmetic. Reviewers: atrick, regehr Subscribers: sanjoy, mcrosier, llvm-commits Differential Revision: http://reviews.llvm.org/D18685 llvm-svn: 265913
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