From: Dan Gohman <gohman@apple.com>
Date: Fri, 21 Mar 2008 22:51:06 +0000 (+0000)
Subject: Fix -view-sunit-dags to support cross-rc-copy nodes.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4145bd509d0be0ea2ebea693a7ad15948480d982;p=oota-llvm.git

Fix -view-sunit-dags to support cross-rc-copy nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48664 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index ad58aa06165..7779acce634 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -314,7 +314,10 @@ std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
                                                       &G->DAG) + "\n";
   }
 
-  Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->Node, &G->DAG);
+  if (SU->Node)
+    Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->Node, &G->DAG);
+  else
+    Op += "<CROSS RC COPY>";
 
   return Op;
 }