Add a little helper method which will be useful soon.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108972 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index f236eb4253..d335e2b4f8 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -117,6 +117,10 @@ public:
 
     bool isValid() const { return Size >= 0; }
 
+    /// \return true if this scope is (non-strictly) nested within the
+    ///   given scope, assuming they're both valid
+    bool isWithin(stable_iterator I) const { return Size <= I.Size; }
+
     friend bool operator==(stable_iterator A, stable_iterator B) {
       return A.Size == B.Size;
     }