[analyzer] Migrate argument invalidation from CFRefCount to ExprEngine.

This is a common path for function and C++ method calls, Objective-C messages and property accesses, and C++ construct-exprs.

As support, add message receiver accessors to ObjCMessage and CallOrObjCMessage.

llvm-svn: 138718

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/StaticAnalyzer/Core/ObjCMessage.cpp b/clang/lib/StaticAnalyzer/Core/ObjCMessage.cpp
index 82b0e7c3053..112c4682100 100644
--- a/clang/lib/StaticAnalyzer/Core/ObjCMessage.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ObjCMessage.cpp
@@ -150,3 +150,9 @@ SVal CallOrObjCMessage::getCXXCallee() const {
     cast<CXXMemberCallExpr>(ActualCall)->getImplicitObjectArgument();
   return State->getSVal(callee);  
 }
+
+SVal
+CallOrObjCMessage::getInstanceMessageReceiver(const LocationContext *LC) const {
+  assert(isObjCMessage());
+  return Msg.getInstanceReceiverSVal(State, LC);
+}