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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+38
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-38/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [LSR] Update test from rL356256 after rebase.Florian Hahn2019-03-151-6/+6
| | | | llvm-svn: 356257
* [LSR] Check for signed overflow in NarrowSearchSpaceByDetectingSupersets.Florian Hahn2019-03-151-0/+38
We are adding a sign extended IR value to an int64_t, which can cause signed overflows, as in the attached test case, where we have a formula with BaseOffset = -1 and a constant with numeric_limits<int64_t>::min(). If the addition would overflow, skip the simplification for this formula. Note that the target triple is required to trigger the failure. Reviewers: qcolombet, gilr, kparzysz, efriedma Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D59211 llvm-svn: 356256
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