Remove IntrWriteMem, as it's the default. Rename IntrWriteArgMem
to IntrReadWriteArgMem, as it's for reading as well as writing.

llvm-svn: 110395
diff --git a/llvm/utils/TableGen/CodeGenIntrinsics.h b/llvm/utils/TableGen/CodeGenIntrinsics.h
index 7e7bdf9..3208c0d 100644
--- a/llvm/utils/TableGen/CodeGenIntrinsics.h
+++ b/llvm/utils/TableGen/CodeGenIntrinsics.h
@@ -60,7 +60,7 @@
 
     // Memory mod/ref behavior of this intrinsic.
     enum {
-      NoMem, ReadArgMem, ReadMem, WriteArgMem, WriteMem
+      NoMem, ReadArgMem, ReadMem, ReadWriteArgMem, ReadWriteMem
     } ModRef;
 
     /// This is set to true if the intrinsic is overloaded by its argument