Added AllocaRegion, which represents regions created by calls to alloca().
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemRegion.cpp b/lib/Analysis/MemRegion.cpp
index 27ecffd..14da4db 100644
--- a/lib/Analysis/MemRegion.cpp
+++ b/lib/Analysis/MemRegion.cpp
@@ -33,6 +33,17 @@
ID.AddPointer(superRegion);
}
+void AllocaRegion::ProfileRegion(llvm::FoldingSetNodeID& ID,
+ const Expr* Ex, unsigned cnt) {
+ ID.AddInteger((unsigned) AllocaRegionKind);
+ ID.AddPointer(Ex);
+ ID.AddInteger(cnt);
+}
+
+void AllocaRegion::Profile(llvm::FoldingSetNodeID& ID) const {
+ ProfileRegion(ID, Ex, Cnt);
+}
+
void AnonTypedRegion::ProfileRegion(llvm::FoldingSetNodeID& ID, QualType T,
const MemRegion* superRegion) {
ID.AddInteger((unsigned) AnonTypedRegionKind);
@@ -117,6 +128,10 @@
os << "<Unknown Region>";
}
+void AllocaRegion::print(llvm::raw_ostream& os) const {
+ os << "alloca{" << (void*) Ex << ',' << Cnt << '}';
+}
+
void VarRegion::print(llvm::raw_ostream& os) const {
os << cast<VarDecl>(D)->getName();
}
@@ -350,13 +365,31 @@
return R;
}
+AllocaRegion* MemRegionManager::getAllocaRegion(const Expr* E, unsigned cnt) {
+ llvm::FoldingSetNodeID ID;
+ AllocaRegion::ProfileRegion(ID, E, cnt);
+
+ void* InsertPos;
+ MemRegion* data = Regions.FindNodeOrInsertPos(ID, InsertPos);
+ AllocaRegion* R = cast_or_null<AllocaRegion>(data);
+
+ if (!R) {
+ R = (AllocaRegion*) A.Allocate<AllocaRegion>();
+ new (R) AllocaRegion(E, cnt, getStackRegion());
+ Regions.InsertNode(R, InsertPos);
+ }
+
+ return R;
+}
+
bool MemRegionManager::hasStackStorage(const MemRegion* R) {
- const SubRegion* SR = dyn_cast<SubRegion>(R);
// Only subregions can have stack storage.
+ const SubRegion* SR = dyn_cast<SubRegion>(R);
+
if (!SR)
return false;
-
+
MemSpaceRegion* S = getStackRegion();
while (SR) {