[llvm] r185890 - Revert "DebugInfo: remove unused helper function getDICompositeType."

[Eric Christopher]

Author: echristo
Date: Mon Jul  8 19:16:56 2013
New Revision: 185890

URL: http://llvm.org/viewvc/llvm-project?rev=185890&view=rev
Log:
Revert "DebugInfo: remove unused helper function getDICompositeType."

This reverts commit r185876 as the functions appear to still be used
by dragonegg.

Modified:
    llvm/trunk/include/llvm/DebugInfo.h
    llvm/trunk/lib/IR/DebugInfo.cpp

Modified: llvm/trunk/include/llvm/DebugInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo.h?rev=185890&r1=185889&r2=185890&view=diff
==============================================================================
--- llvm/trunk/include/llvm/DebugInfo.h (original)
+++ llvm/trunk/include/llvm/DebugInfo.h Mon Jul  8 19:16:56 2013
@@ -695,6 +695,9 @@ namespace llvm {
   /// getDISubprogram - Find subprogram that is enclosing this scope.
   DISubprogram getDISubprogram(const MDNode *Scope);
 
+  /// getDICompositeType - Find underlying composite type.
+  DICompositeType getDICompositeType(DIType T);
+
   /// isSubprogramContext - Return true if Context is either a subprogram
   /// or another context nested inside a subprogram.
   bool isSubprogramContext(const MDNode *Context);

Modified: llvm/trunk/lib/IR/DebugInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/DebugInfo.cpp?rev=185890&r1=185889&r2=185890&view=diff
==============================================================================
--- llvm/trunk/lib/IR/DebugInfo.cpp (original)
+++ llvm/trunk/lib/IR/DebugInfo.cpp Mon Jul  8 19:16:56 2013
@@ -844,6 +844,17 @@ DISubprogram llvm::getDISubprogram(const
   return DISubprogram();
 }
 
+/// getDICompositeType - Find underlying composite type.
+DICompositeType llvm::getDICompositeType(DIType T) {
+  if (T.isCompositeType())
+    return DICompositeType(T);
+
+  if (T.isDerivedType())
+    return getDICompositeType(DIDerivedType(T).getTypeDerivedFrom());
+
+  return DICompositeType();
+}
+
 /// isSubprogramContext - Return true if Context is either a subprogram
 /// or another context nested inside a subprogram.
 bool llvm::isSubprogramContext(const MDNode *Context) {