Added "InfeasibleEdge" to represent an infeasible state transition.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45802 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 2 deletions

diff --git a/include/clang/Analysis/ProgramEdge.h b/include/clang/Analysis/ProgramEdge.h
index ee8fae0140..1c10196c28 100644
--- a/include/clang/Analysis/ProgramEdge.h
+++ b/include/clang/Analysis/ProgramEdge.h
@@ -28,7 +28,7 @@ class ProgramEdge {
   uintptr_t Src, Dst;
 public:
   enum EdgeKind { BExprBlk=0,   BlkBExpr=1,   BExprBExpr=2, BlkBlk=3,
-                  BExprSExpr=4, SExprSExpr=5, SExprBExpr=6 };
+                  BExprSExpr=4, SExprSExpr=5, SExprBExpr=6, Infeasible=7 };
   
   static bool classof(const ProgramEdge*) { return true; }
   
@@ -155,7 +155,18 @@ public:
     return E->getKind() == BlkBlk;
   }
 };
-
+  
+class InfeasibleEdge : public ProgramEdge {
+public:
+  InfeasibleEdge(Stmt* S) : ProgramEdge(S,NULL,Infeasible) {}
+  
+  Stmt* getStmt() const { return reinterpret_cast<Stmt*>(RawSrc()); }
+  
+  static bool classof(const ProgramEdge* E) {
+    return E->getKind() == Infeasible;
+  }
+};
+  
 } // end namespace clang