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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+11
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-11/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* Mark guards on true as "trivially dead"Sanjoy Das2016-04-291-0/+11
This moves some logic added to EarlyCSE in rL268120 into `llvm::isInstructionTriviallyDead`. Adds a test case for DCE to demonstrate that passes other than EarlyCSE can now pick up on the new information. llvm-svn: 268126
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