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-rw-r--r--include/llvm/Support/DOTGraphTraits.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/llvm/Support/DOTGraphTraits.h b/include/llvm/Support/DOTGraphTraits.h
index 080c09b5f4..2367c0e260 100644
--- a/include/llvm/Support/DOTGraphTraits.h
+++ b/include/llvm/Support/DOTGraphTraits.h
@@ -100,6 +100,24 @@ struct DefaultDOTGraphTraits {
return I;
}
+ /// hasEdgeDestLabels - If this function returns true, the graph is able
+ /// to provide labels for edge destinations.
+ static bool hasEdgeDestLabels() {
+ return false;
+ }
+
+ /// numEdgeDestLabels - If hasEdgeDestLabels, this function returns the
+ /// number of incoming edge labels the given node has.
+ static unsigned numEdgeDestLabels(const void *Node) {
+ return 0;
+ }
+
+ /// getEdgeDestLabel - If hasEdgeDestLabels, this function returns the
+ /// incoming edge label with the given index in the given node.
+ static std::string getEdgeDestLabel(const void *Node, unsigned i) {
+ return "";
+ }
+
/// addCustomGraphFeatures - If a graph is made up of more than just
/// straight-forward nodes and edges, this is the place to put all of the
/// custom stuff necessary. The GraphWriter object, instantiated with your