Vendor import of clang r114020 (from the release_28 branch):

http://llvm.org/svn/llvm-project/cfe/branches/release_28@114020

Approved by:	rpaulo (mentor)

1 files changed, 27 insertions, 14 deletions

diff --git a/include/clang/Checker/PathSensitive/Store.h b/include/clang/Checker/PathSensitive/Store.h
index 7a60ebb..a1a4184 100644
--- a/include/clang/Checker/PathSensitive/Store.h
+++ b/include/clang/Checker/PathSensitive/Store.h
@@ -149,9 +149,8 @@ public:
     return UnknownVal();
   }
 
-  virtual const GRState *RemoveDeadBindings(GRState &state,
-                                            const StackFrameContext *LCtx,
-                                            SymbolReaper& SymReaper,
+  virtual Store RemoveDeadBindings(Store store, const StackFrameContext *LCtx,
+                                   SymbolReaper& SymReaper,
                       llvm::SmallVectorImpl<const MemRegion*>& RegionRoots) = 0;
 
   virtual Store BindDecl(Store store, const VarRegion *VR, SVal initVal) = 0;
@@ -159,25 +158,39 @@ public:
   virtual Store BindDeclWithNoInit(Store store, const VarRegion *VR) = 0;
 
   typedef llvm::DenseSet<SymbolRef> InvalidatedSymbols;
-  
-  virtual Store InvalidateRegion(Store store,
-                                 const MemRegion *R,
-                                 const Expr *E, unsigned Count,
-                                 InvalidatedSymbols *IS) = 0;
-  
+  typedef llvm::SmallVector<const MemRegion *, 8> InvalidatedRegions;
+
+  /// InvalidateRegions - Clears out the specified regions from the store,
+  ///  marking their values as unknown. Depending on the store, this may also
+  ///  invalidate additional regions that may have changed based on accessing
+  ///  the given regions. Optionally, invalidates non-static globals as well.
+  /// \param[in] store The initial store
+  /// \param[in] Begin A pointer to the first region to invalidate.
+  /// \param[in] End A pointer just past the last region to invalidate.
+  /// \param[in] E The current statement being evaluated. Used to conjure
+  ///   symbols to mark the values of invalidated regions.
+  /// \param[in] Count The current block count. Used to conjure
+  ///   symbols to mark the values of invalidated regions.
+  /// \param[in,out] IS A set to fill with any symbols that are no longer
+  ///   accessible. Pass \c NULL if this information will not be used.
+  /// \param[in] invalidateGlobals If \c true, any non-static global regions
+  ///   are invalidated as well.
+  /// \param[in,out] Regions A vector to fill with any regions being
+  ///   invalidated. This should include any regions explicitly invalidated
+  ///   even if they do not currently have bindings. Pass \c NULL if this
+  ///   information will not be used.
   virtual Store InvalidateRegions(Store store,
                                   const MemRegion * const *Begin,
                                   const MemRegion * const *End,
                                   const Expr *E, unsigned Count,
                                   InvalidatedSymbols *IS,
-                                  bool invalidateGlobals) = 0;
+                                  bool invalidateGlobals,
+                                  InvalidatedRegions *Regions) = 0;
 
   /// EnterStackFrame - Let the StoreManager to do something when execution
   /// engine is about to execute into a callee.
-  virtual const GRState *EnterStackFrame(const GRState *state,
-                                         const StackFrameContext *frame) {
-    return state;
-  }
+  virtual Store EnterStackFrame(const GRState *state,
+                                const StackFrameContext *frame);
 
   virtual void print(Store store, llvm::raw_ostream& Out,
                      const char* nl, const char *sep) = 0;