Treat free operations as volatile, since they cannot be moved. This fixes
Transforms/LICM/2005-03-24-LICM-Aggregate-Crash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20830 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index 4b36f40..73baf4a 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -288,6 +288,9 @@
bool NewPtr;
AliasSet &AS = addPointer(FI->getOperand(0), ~0,
AliasSet::Mods, NewPtr);
+
+ // Free operations are volatile ops (cannot be moved).
+ AS.setVolatile();
return NewPtr;
}