Debug Info: move DIScope::getContext back from DwarfDebug.

This partially reverts r190330. DIScope::getContext now returns DIScopeRef
instead of DIScope. We construct a DIScopeRef from DIScope when we are
dealing with subprogram, lexical block or name space.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190362 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/llvm/DebugInfo.h b/include/llvm/DebugInfo.h
index 4ea843c4ce..e9a78314bc 100644
--- a/include/llvm/DebugInfo.h
+++ b/include/llvm/DebugInfo.h
@@ -200,6 +200,9 @@ namespace llvm {
   public:
     explicit DIScope(const MDNode *N = 0) : DIDescriptor (N) {}
 
+    /// Gets the parent scope for this scope node or returns a
+    /// default constructed scope.
+    DIScopeRef getContext() const;
     StringRef getFilename() const;
     StringRef getDirectory() const;
 
@@ -213,6 +216,7 @@ namespace llvm {
   class DIScopeRef {
     template <typename DescTy>
     friend DescTy DIDescriptor::getFieldAs(unsigned Elt) const;
+    friend DIScopeRef DIScope::getContext() const;
 
     /// Val can be either a MDNode or a MDString, in the latter,
     /// MDString specifies the type identifier.