Make 'SaveAndRestore' and friends reusable classes in libAnalysis.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76795 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 12 deletions

diff --git a/lib/Analysis/CFG.cpp b/lib/Analysis/CFG.cpp
index 79ca8114a7..4c2ecb92f6 100644
--- a/lib/Analysis/CFG.cpp
+++ b/lib/Analysis/CFG.cpp
@@ -12,6 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "clang/Analysis/Support/SaveAndRestore.h"
 #include "clang/Analysis/CFG.h"
 #include "clang/AST/StmtVisitor.h"
 #include "clang/AST/PrettyPrinter.h"
@@ -27,18 +28,6 @@ using namespace clang;
 
 namespace {
 
-// SaveAndRestore - A utility class that uses RIIA to save and restore
-//  the value of a variable.
-template<typename T>
-struct VISIBILITY_HIDDEN SaveAndRestore {
-  SaveAndRestore(T& x) : X(x), old_value(x) {}
-  ~SaveAndRestore() { X = old_value; }
-  T get() { return old_value; }
-
-  T& X;
-  T old_value;
-};
-
 static SourceLocation GetEndLoc(Decl* D) {
   if (VarDecl* VD = dyn_cast<VarDecl>(D))
     if (Expr* Ex = VD->getInit())