b623088abe
[LVI] Fix potential memory corruption in getValueFromCondition
...
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
2016-08-12 15:08:15 +00:00
255dea4b90
CorrelatedPropagation: BasicBlock::removePredecessor can simplify PHI nodes. If the it's the condition of a SwitchInst, reload it.
...
Fixes PR13972.
llvm-svn: 164818
2012-09-28 10:42:50 +00:00
35609d97ae
Fix PR8790, another instance where unreachable code can cause instruction simplification to fail,
...
this case involve a select that simplifies to itself.
llvm-svn: 121817
2010-12-15 00:55:35 +00:00
94532cb297
Fix PR8161, in which an unreachable loop causes recursive instruction simplification to try
...
to replace an instruction with itself. Add a predicate to the simplifier to prevent this case.
llvm-svn: 114097
2010-09-16 17:42:36 +00:00
Artur Pilipenko