From ce4edd647bddec0be61df39962f1a697068891f2 Mon Sep 17 00:00:00 2001
From: Tobias Grosser <grosser@fim.uni-passau.de>
Date: Mon, 30 Nov 2009 12:37:39 +0000
Subject: [PATCH] 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
---
 include/llvm/Support/GraphWriter.h | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/include/llvm/Support/GraphWriter.h b/include/llvm/Support/GraphWriter.h
index 6d1b18eba6b..c89eb55c98f 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 << "]";