Introduce a new temporary MDNode concept. Temporary MDNodes are

[oota-llvm.git] / include / llvm / Metadata.h

diff --git a/include/llvm/Metadata.h b/include/llvm/Metadata.h
index ef9646e9774aef0dff8cfeb081c9ffdc6fe81105..f773817e829f87d2e8ef4bbd775702543c4556a5 100644 (file)
--- a/include/llvm/Metadata.h
+++ b/include/llvm/Metadata.h
@@ -128,6 +128,16 @@ public:
                                        
   static MDNode *getIfExists(LLVMContext &Context, Value *const *Vals,
                              unsigned NumVals);
+
+  /// getTemporary - Return a temporary MDNode, for use in constructing
+  /// cyclic MDNode structures. A temporary MDNode is not uniqued,
+  /// may be RAUW'd, and must be manually deleted with deleteTemporary.
+  static MDNode *getTemporary(LLVMContext &Context, Value *const *Vals,
+                              unsigned NumVals);
+
+  /// deleteTemporary - Deallocate a node created by getTemporary. The
+  /// node must not have any users.
+  static void deleteTemporary(MDNode *N);
   
   /// getOperand - Return specified operand.
   Value *getOperand(unsigned i) const;