Restore Zhongxing's commits r97122 r97127 r97129 r97131 which were reverted due to a Clang-on-Clang failure

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97162 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 33 insertions, 0 deletions

diff --git a/include/clang/Analysis/ProgramPoint.h b/include/clang/Analysis/ProgramPoint.h
index 332f9d384f..fb8d4d5ff5 100644
--- a/include/clang/Analysis/ProgramPoint.h
+++ b/include/clang/Analysis/ProgramPoint.h
@@ -26,6 +26,7 @@
 namespace clang {
 
 class LocationContext;
+class FunctionDecl;
 
 class ProgramPoint {
 public:
@@ -41,6 +42,8 @@ public:
               PostPurgeDeadSymbolsKind,
               PostStmtCustomKind,
               PostLValueKind,
+              CallEnterKind,
+              CallExitKind,
               MinPostStmtKind = PostStmtKind,
               MaxPostStmtKind = PostLValueKind };
 
@@ -308,6 +311,36 @@ public:
   }
 };
 
+class CallEnter : public StmtPoint {
+public:
+  // CallEnter uses the caller's location context.
+  CallEnter(const Stmt *S, const FunctionDecl *fd, const LocationContext *L)
+    : StmtPoint(S, fd, CallEnterKind, L, 0) {}
+
+  const Stmt *getCallExpr() const {
+    return static_cast<const Stmt *>(getData1());
+  }
+
+  const FunctionDecl *getCallee() const {
+    return static_cast<const FunctionDecl *>(getData2());
+  }
+
+  static bool classof(const ProgramPoint *Location) {
+    return Location->getKind() == CallEnterKind;
+  }
+};
+
+class CallExit : public StmtPoint {
+public:
+  // CallExit uses the callee's location context.
+  CallExit(const Stmt *S, const LocationContext *L)
+    : StmtPoint(S, 0, CallExitKind, L, 0) {}
+
+  static bool classof(const ProgramPoint *Location) {
+    return Location->getKind() == CallExitKind;
+  }
+};
+
 
 } // end namespace clang