commit 26f7fa7bba94eb18bf0e43586dd2b596cb58ca80
author Jim Laskey <jlaskey@mac.com> Tue Oct 17 19:33:52 2006 +0000
committer Jim Laskey <jlaskey@mac.com> Tue Oct 17 19:33:52 2006 +0000
tree 6708a40e03a0bc00223f823b7a2689133101dfcb
parent 3f3a6f6c3b6b178602a1246e62ed1e6c5d9631de

Make it simplier to dump DAGs while in DAGCombiner.  Remove a nasty optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31009 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index 486f054..53e7595 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -61,7 +61,8 @@
     static void addCustomGraphFeatures(SelectionDAG *G,
                                        GraphWriter<SelectionDAG*> &GW) {
       GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
-      GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
+      if (G->getRoot().Val)
+        GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
     }
   };
 }