Add support for free instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15197 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index efb3184..22396b5 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -233,6 +233,13 @@
return NewPtr;
}
+bool AliasSetTracker::add(FreeInst *FI) {
+ bool NewPtr;
+ AliasSet &AS = addPointer(FI->getOperand(0), ~0,
+ AliasSet::Mods, NewPtr);
+ return NewPtr;
+}
+
bool AliasSetTracker::add(CallSite CS) {
bool NewPtr;
@@ -262,6 +269,8 @@
return add(CI);
else if (InvokeInst *II = dyn_cast<InvokeInst>(I))
return add(II);
+ else if (FreeInst *FI = dyn_cast<FreeInst>(I))
+ return add(FI);
return true;
}
@@ -326,6 +335,13 @@
return true;
}
+bool AliasSetTracker::remove(FreeInst *FI) {
+ AliasSet *AS = findAliasSetForPointer(FI->getOperand(0), ~0);
+ if (!AS) return false;
+ remove(*AS);
+ return true;
+}
+
bool AliasSetTracker::remove(CallSite CS) {
if (Function *F = CS.getCalledFunction())
if (AA.doesNotAccessMemory(F))
@@ -345,8 +361,8 @@
return remove(SI);
else if (CallInst *CI = dyn_cast<CallInst>(I))
return remove(CI);
- else if (InvokeInst *II = dyn_cast<InvokeInst>(I))
- return remove(II);
+ else if (FreeInst *FI = dyn_cast<FreeInst>(I))
+ return remove(FI);
return true;
}