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

1 files changed, 2 insertions, 6 deletions

diff --git a/include/llvm/Support/GraphWriter.h b/include/llvm/Support/GraphWriter.h
index 6d1b18eba6..c89eb55c98 100644
--- 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 << "]";