Twinify GraphWriter a little bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144647 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/EdgeBundles.cpp b/lib/CodeGen/EdgeBundles.cpp
index a7aba89..3bb0465 100644
--- a/lib/CodeGen/EdgeBundles.cpp
+++ b/lib/CodeGen/EdgeBundles.cpp
@@ -77,7 +77,7 @@
 /// Specialize WriteGraph, the standard implementation won't work.
 raw_ostream &llvm::WriteGraph(raw_ostream &O, const EdgeBundles &G,
                               bool ShortNames,
-                              const std::string &Title) {
+                              const Twine &Title) {
   const MachineFunction *MF = G.getMachineFunction();
 
   O << "digraph {\n";
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 20066a0..64eae7b 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -368,7 +368,7 @@
 void MachineFunction::viewCFG() const
 {
 #ifndef NDEBUG
-  ViewGraph(this, "mf" + getFunction()->getNameStr());
+  ViewGraph(this, "mf" + getFunction()->getName());
 #else
   errs() << "MachineFunction::viewCFG is only available in debug builds on "
          << "systems with Graphviz or gv!\n";
@@ -378,7 +378,7 @@
 void MachineFunction::viewCFGOnly() const
 {
 #ifndef NDEBUG
-  ViewGraph(this, "mf" + getFunction()->getNameStr(), true);
+  ViewGraph(this, "mf" + getFunction()->getName(), true);
 #else
   errs() << "MachineFunction::viewCFGOnly is only available in debug builds on "
          << "systems with Graphviz or gv!\n";
diff --git a/lib/CodeGen/ScheduleDAGPrinter.cpp b/lib/CodeGen/ScheduleDAGPrinter.cpp
index 4b55a22..6304243 100644
--- a/lib/CodeGen/ScheduleDAGPrinter.cpp
+++ b/lib/CodeGen/ScheduleDAGPrinter.cpp
@@ -86,12 +86,12 @@
 // This code is only for debugging!
 #ifndef NDEBUG
   if (BB->getBasicBlock())
-    ViewGraph(this, "dag." + MF.getFunction()->getNameStr(), false,
-              "Scheduling-Units Graph for " + MF.getFunction()->getNameStr() + 
-              ":" + BB->getBasicBlock()->getNameStr());
+    ViewGraph(this, "dag." + MF.getFunction()->getName(), false,
+              "Scheduling-Units Graph for " + MF.getFunction()->getName() +
+              ":" + BB->getBasicBlock()->getName());
   else
-    ViewGraph(this, "dag." + MF.getFunction()->getNameStr(), false,
-              "Scheduling-Units Graph for " + MF.getFunction()->getNameStr());
+    ViewGraph(this, "dag." + MF.getFunction()->getName(), false,
+              "Scheduling-Units Graph for " + MF.getFunction()->getName());
 #else
   errs() << "ScheduleDAG::viewGraph is only available in debug builds on "
          << "systems with Graphviz or gv!\n";
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index 95e21e6..a7cf089 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -147,7 +147,7 @@
 void SelectionDAG::viewGraph(const std::string &Title) {
 // This code is only for debugging!
 #ifndef NDEBUG
-  ViewGraph(this, "dag." + getMachineFunction().getFunction()->getNameStr(),
+  ViewGraph(this, "dag." + getMachineFunction().getFunction()->getName(),
             false, Title);
 #else
   errs() << "SelectionDAG::viewGraph is only available in debug builds on "