From 358033102ffaef4d1afb1c0b7e96440906f0b48f Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Mon, 21 Jul 2008 21:06:55 +0000
Subject: Enhance the GraphWriter support for edge destinations, and teach the
 SelectionDAG graph writer to make use of them. Now, nodes with multiple
 values are displayed as such, with incoming edges pointing to the specific
 value they use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53875 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Support/GraphWriter.h | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

(limited to 'include/llvm/Support/GraphWriter.h')

diff --git a/include/llvm/Support/GraphWriter.h b/include/llvm/Support/GraphWriter.h
index afb2f545bb..20e85cce7d 100644
--- a/include/llvm/Support/GraphWriter.h
+++ b/include/llvm/Support/GraphWriter.h
@@ -146,11 +146,11 @@ public:
 
       for (unsigned i = 0; EI != EE && i != 64; ++EI, ++i) {
         if (i) O << "|";
-        O << "<g" << i << ">" << DOTTraits::getEdgeSourceLabel(Node, EI);
+        O << "<s" << i << ">" << DOTTraits::getEdgeSourceLabel(Node, EI);
       }
 
       if (EI != EE)
-        O << "|<g64>truncated...";
+        O << "|<s64>truncated...";
       O << "}";
       if (DOTTraits::renderGraphFromBottomUp()) O << "|";
     }
@@ -163,6 +163,20 @@ public:
         O << "|" << (void*)Node;
     }
 
+    if (DOTTraits::hasEdgeDestLabels()) {
+      O << "|{";
+
+      unsigned i = 0, e = DOTTraits::numEdgeDestLabels(Node);
+      for (; i != e && i != 64; ++i) {
+        if (i) O << "|";
+        O << "<d" << i << ">" << DOTTraits::getEdgeDestLabel(Node, i);
+      }
+
+      if (i != e)
+        O << "|<d64>truncated...";
+      O << "}";
+    }
+
     O << "}\"];\n";   // Finish printing the "node" line
 
     // Output all of the edges now
@@ -223,10 +237,10 @@ public:
 
     O << "\tNode" << SrcNodeID;
     if (SrcNodePort >= 0)
-      O << ":g" << SrcNodePort;
+      O << ":s" << SrcNodePort;
     O << " -> Node" << reinterpret_cast<const void*>(DestNodeID);
     if (DestNodePort >= 0)
-      O << ":g" << DestNodePort;
+      O << ":d" << DestNodePort;
 
     if (!Attrs.empty())
       O << "[" << Attrs << "]";
-- 
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