Add 'MemRegion::getBaseRegion()', a utility method to strip ElementRegions with
index 0. This will be used for refinements to InvalidateRegion and CastRegion.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77481 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/SVals.cpp b/lib/Analysis/SVals.cpp
index a5ba199..6f480e8 100644
--- a/lib/Analysis/SVals.cpp
+++ b/lib/Analysis/SVals.cpp
@@ -72,7 +72,7 @@
// FIXME: should we consider SymbolRef wrapped in CodeTextRegion?
SymbolRef SVal::getAsLocSymbol() const {
if (const loc::MemRegionVal *X = dyn_cast<loc::MemRegionVal>(this)) {
- const MemRegion *R = X->getRegion();
+ const MemRegion *R = X->getBaseRegion();
while (R) {
// Blast through region views.
@@ -80,7 +80,6 @@
R = View->getSuperRegion();
continue;
}
-
if (const SymbolicRegion *SymR = dyn_cast<SymbolicRegion>(R))
return SymR->getSymbol();
@@ -121,6 +120,11 @@
return 0;
}
+const MemRegion *loc::MemRegionVal::getBaseRegion() const {
+ const MemRegion *R = getRegion();
+ return R ? R->getBaseRegion() : NULL;
+}
+
bool SVal::symbol_iterator::operator==(const symbol_iterator &X) const {
return itr == X.itr;
}