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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+202
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-202/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [LVI] Fix potential memory corruption in getValueFromConditionArtur Pilipenko2016-08-121-0/+140
| | | | | | Rewrite Visited[Cond] = getValueFromConditionImpl(..., Visited) statement which can lead to a memory corruption since getValueFromConditionImpl changes Visited map and invalidates the iterators. llvm-svn: 278514
* CorrelatedPropagation: BasicBlock::removePredecessor can simplify PHI nodes. ↵Benjamin Kramer2012-09-281-0/+25
| | | | | | | | If the it's the condition of a SwitchInst, reload it. Fixes PR13972. llvm-svn: 164818
* Fix PR8790, another instance where unreachable code can cause instruction ↵Owen Anderson2010-12-151-0/+17
| | | | | | | | simplification to fail, this case involve a select that simplifies to itself. llvm-svn: 121817
* Fix PR8161, in which an unreachable loop causes recursive instruction ↵Owen Anderson2010-09-161-0/+20
simplification to try to replace an instruction with itself. Add a predicate to the simplifier to prevent this case. llvm-svn: 114097
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