Enhances SCA to process untyped region to typed region conversion.
- RegionView and RegionViewMap is introduced to assist back-mapping from
super region to subregions.
- GDM is used to carry RegionView information.
- AnonTypedRegion is added to represent a typed region introduced by pointer
casting. Later AnonTypedRegion can be used in other similar cases, e.g.,
malloc()'ed region.
- The specific conversion is delegated to store manager.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59382 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/GRExprEngine.cpp b/lib/Analysis/GRExprEngine.cpp
index 55fbf18..e002c13 100644
--- a/lib/Analysis/GRExprEngine.cpp
+++ b/lib/Analysis/GRExprEngine.cpp
@@ -1692,6 +1692,21 @@
continue;
}
+ // Check for casts from AllocaRegion pointer to typed pointer.
+ if (isa<loc::MemRegionVal>(V)) {
+ assert(Loc::IsLocType(T));
+ assert(Loc::IsLocType(ExTy));
+
+ // Delegate to store manager.
+ const GRState* NewSt = getStoreManager().CastRegion(St, V, T, CastE);
+
+ // If no new region is created, fall through to the default case.
+ if (NewSt != St) {
+ MakeNode(Dst, CastE, N, NewSt);
+ continue;
+ }
+ }
+
// All other cases.
MakeNode(Dst, CastE, N, BindExpr(St, CastE, EvalCast(V, CastE->getType())));
}