[llvm-commits] [llvm] r47015 - /llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h

[Dan Gohman]

Author: djg
Date: Tue Feb 12 12:52:52 2008
New Revision: 47015

URL: http://llvm.org/viewvc/llvm-project?rev=47015&view=rev
Log:
Add a doxygen comment for SrcValueSDNode, to make its purpose
clear and to clarify how it differs from MemOperandSDNode.

Modified:
    llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h

Modified: llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h?rev=47015&r1=47014&r2=47015&view=diff

==============================================================================
--- llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h Tue Feb 12 12:52:52 2008
@@ -1396,6 +1396,14 @@
   }
 };
 
+/// SrcValueSDNode - An SDNode that holds an arbitrary LLVM IR Value. This is
+/// used when the SelectionDAG needs to make a simple reference to something
+/// in the LLVM IR representation.
+///
+/// Note that this is not used for carrying alias information; that is done
+/// with MemOperandSDNode, which includes a Value which is required to be a
+/// pointer, and several other fields specific to memory references.
+///
 class SrcValueSDNode : public SDNode {
   const Value *V;
   virtual void ANCHOR();  // Out-of-line virtual method to give class a home.