From 7d1cd3f21d68179f4ebf4ee18fb7a0ddca9c5a37 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 19 Nov 2008 22:09:45 +0000
Subject: [PATCH] Move the code for printing a graph node label for an SUnit
 into a virtual method of SelectionDAG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59667 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/ScheduleDAG.h            |  4 ++
 lib/CodeGen/SelectionDAG/ScheduleDAG.cpp      |  2 +-
 .../SelectionDAG/SelectionDAGPrinter.cpp      | 43 +++++++++----------
 3 files changed, 25 insertions(+), 24 deletions(-)

diff --git a/include/llvm/CodeGen/ScheduleDAG.h b/include/llvm/CodeGen/ScheduleDAG.h
index 8172a15fb4d..49dabe67580 100644
--- a/include/llvm/CodeGen/ScheduleDAG.h
+++ b/include/llvm/CodeGen/ScheduleDAG.h
@@ -396,6 +396,10 @@ namespace llvm {
     ///
     virtual void Schedule() = 0;
 
+    /// getGraphpNodeLabel - Return a label for an SUnit node in a Graphviz or similar
+    /// graph visualization.
+    virtual std::string getGraphNodeLabel(const SUnit *SU) const;
+
   private:
     /// EmitSubregNode - Generate machine code for subreg nodes.
     ///
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index b63c3c1cf10..c2e21752385 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -468,7 +468,7 @@ void SUnit::print(raw_ostream &O, const ScheduleDAG *G) const {
       FlaggedNodes.push_back(N);
     while (!FlaggedNodes.empty()) {
       O << "    ";
-      FlaggedNodes.back()->dump(G->DAG);
+      FlaggedNodes.back()->print(O, G->DAG);
       O << "\n";
       FlaggedNodes.pop_back();
     }
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index 758b8f263b3..d7481085dfd 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -444,31 +444,28 @@ namespace llvm {
 
 std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
                                                        const ScheduleDAG *G) {
-  std::string Op;
-
-  if (G->DAG) {
-    if (!SU->getNode())
-      Op = "<CROSS RC COPY>";
-    else {
-      SmallVector<SDNode *, 4> FlaggedNodes;
-      for (SDNode *N = SU->getNode(); N; N = N->getFlaggedNode())
-        FlaggedNodes.push_back(N);
-      while (!FlaggedNodes.empty()) {
-        Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(FlaggedNodes.back(),
-                                                          G->DAG) + "\n";
-        FlaggedNodes.pop_back();
-      }
-    }
-  } else {
-    std::string s;
-    raw_string_ostream oss(s);
-    SU->getInstr()->print(oss);
-    Op += oss.str();
-  }
-
-  return Op;
+  return G->getGraphNodeLabel(SU);
 }
 
+std::string ScheduleDAG::getGraphNodeLabel(const SUnit *SU) const {
+  std::string s;
+  raw_string_ostream O(s);
+  O << "SU(" << SU->NodeNum << "): ";
+  if (SU->getNode()) {
+    SmallVector<SDNode *, 4> FlaggedNodes;
+    for (SDNode *N = SU->getNode(); N; N = N->getFlaggedNode())
+      FlaggedNodes.push_back(N);
+    while (!FlaggedNodes.empty()) {
+      O << DOTGraphTraits<SelectionDAG*>::getNodeLabel(FlaggedNodes.back(), DAG);
+      FlaggedNodes.pop_back();
+      if (!FlaggedNodes.empty())
+        O << "\n    ";
+    }
+  } else {
+    O << "CROSS RC COPY";
+  }
+  return O.str();
+}
 
 /// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
 /// rendered using 'dot'.