Do not point edge heads to source labels

If no destination label is available, just point to the node itself
instead of pointing to some source label. Source and destination labels are
not related in any way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90132 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/GraphWriter.h b/include/llvm/Support/GraphWriter.h
index 6d1b18eba6bac6adada1748300c650b082ddca15..c89eb55c98f0fb7ddbf8383dfda2bfb8900e5818 100644 (file)
--- a/include/llvm/Support/GraphWriter.h
+++ b/include/llvm/Support/GraphWriter.h
@@ -247,12 +247,8 @@ public:
     if (SrcNodePort >= 0)
       O << ":s" << SrcNodePort;
     O << " -> Node" << DestNodeID;
-    if (DestNodePort >= 0) {
-      if (DOTTraits::hasEdgeDestLabels())
-        O << ":d" << DestNodePort;
-      else
-        O << ":s" << DestNodePort;
-    }
+    if (DestNodePort >= 0 && DOTTraits::hasEdgeDestLabels())
+      O << ":d" << DestNodePort;
 
     if (!Attrs.empty())
       O << "[" << Attrs << "]";