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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+36
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-36/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [InstCombine] Don't transform ((C1 OP zext(X)) & C2) -> zext((C1 OP X) & C2) ↵Craig Topper2019-03-211-8/+7
| | | | | | | | | | | | | | if either zext or OP has another use. If they have other users we'll just end up increasing the instruction count. We might be able to weaken this to only one of them having a single use if we can prove that the and will be removed. Fixes PR41164. Differential Revision: https://reviews.llvm.org/D59630 llvm-svn: 356690
* [InstCombine] Add test case for PR41164. NFCCraig Topper2019-03-211-0/+37
llvm-svn: 356645
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