Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, are
now cerr, cout, and NullStream resp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasAnalysisCounter.cpp b/lib/Analysis/AliasAnalysisCounter.cpp
index d563c13..b2b6739 100644
--- a/lib/Analysis/AliasAnalysisCounter.cpp
+++ b/lib/Analysis/AliasAnalysisCounter.cpp
@@ -39,37 +39,33 @@
     }
 
     void printLine(const char *Desc, unsigned Val, unsigned Sum) {
-      llvm_cerr <<  "  " << Val << " " << Desc << " responses ("
-                << Val*100/Sum << "%)\n";
+      cerr <<  "  " << Val << " " << Desc << " responses ("
+           << Val*100/Sum << "%)\n";
     }
     ~AliasAnalysisCounter() {
       unsigned AASum = No+May+Must;
       unsigned MRSum = NoMR+JustRef+JustMod+MR;
       if (AASum + MRSum) { // Print a report if any counted queries occurred...
-        llvm_cerr
-          << "\n===== Alias Analysis Counter Report =====\n"
-          << "  Analysis counted: " << Name << "\n"
-          << "  " << AASum << " Total Alias Queries Performed\n";
+        cerr << "\n===== Alias Analysis Counter Report =====\n"
+             << "  Analysis counted: " << Name << "\n"
+             << "  " << AASum << " Total Alias Queries Performed\n";
         if (AASum) {
           printLine("no alias",     No, AASum);
           printLine("may alias",   May, AASum);
           printLine("must alias", Must, AASum);
-          llvm_cerr
-            << "  Alias Analysis Counter Summary: " << No*100/AASum << "%/"
-            << May*100/AASum << "%/" << Must*100/AASum<<"%\n\n";
+          cerr << "  Alias Analysis Counter Summary: " << No*100/AASum << "%/"
+               << May*100/AASum << "%/" << Must*100/AASum<<"%\n\n";
         }
 
-        llvm_cerr
-          << "  " << MRSum    << " Total Mod/Ref Queries Performed\n";
+        cerr << "  " << MRSum    << " Total Mod/Ref Queries Performed\n";
         if (MRSum) {
           printLine("no mod/ref",    NoMR, MRSum);
           printLine("ref",        JustRef, MRSum);
           printLine("mod",        JustMod, MRSum);
           printLine("mod/ref",         MR, MRSum);
-          llvm_cerr
-            << "  Mod/Ref Analysis Counter Summary: " << NoMR*100/MRSum<< "%/"
-            << JustRef*100/MRSum << "%/" << JustMod*100/MRSum << "%/"
-            << MR*100/MRSum <<"%\n\n";
+          cerr << "  Mod/Ref Analysis Counter Summary: " <<NoMR*100/MRSum<< "%/"
+               << JustRef*100/MRSum << "%/" << JustMod*100/MRSum << "%/"
+               << MR*100/MRSum <<"%\n\n";
         }
       }
     }
@@ -133,10 +129,10 @@
   }
 
   if (PrintAll || (PrintAllFailures && R == MayAlias)) {
-    llvm_cerr << AliasString << ":\t";
-    llvm_cerr << "[" << V1Size << "B] ";
+    cerr << AliasString << ":\t";
+    cerr << "[" << V1Size << "B] ";
     WriteAsOperand(std::cerr, V1, true, M) << ", ";
-    llvm_cerr << "[" << V2Size << "B] ";
+    cerr << "[" << V2Size << "B] ";
     WriteAsOperand(std::cerr, V2, true, M) << "\n";
   }
 
@@ -157,10 +153,10 @@
   }
 
   if (PrintAll || (PrintAllFailures && R == ModRef)) {
-    llvm_cerr << MRString << ":  Ptr: ";
-    llvm_cerr << "[" << Size << "B] ";
+    cerr << MRString << ":  Ptr: ";
+    cerr << "[" << Size << "B] ";
     WriteAsOperand(std::cerr, P, true, M);
-    llvm_cerr << "\t<->" << *CS.getInstruction();
+    cerr << "\t<->" << *CS.getInstruction();
   }
   return R;
 }
diff --git a/lib/Analysis/AliasAnalysisEvaluator.cpp b/lib/Analysis/AliasAnalysisEvaluator.cpp
index d64394a..31875f8 100644
--- a/lib/Analysis/AliasAnalysisEvaluator.cpp
+++ b/lib/Analysis/AliasAnalysisEvaluator.cpp
@@ -79,7 +79,7 @@
 static inline void PrintResults(const char *Msg, bool P, Value *V1, Value *V2,
                                 Module *M) {
   if (P) {
-    llvm_cerr << "  " << Msg << ":\t";
+    cerr << "  " << Msg << ":\t";
     WriteAsOperand(std::cerr, V1, true, M) << ", ";
     WriteAsOperand(std::cerr, V2, true, M) << "\n";
   }
@@ -89,9 +89,9 @@
 PrintModRefResults(const char *Msg, bool P, Instruction *I, Value *Ptr,
                    Module *M) {
   if (P) {
-    llvm_cerr << "  " << Msg << ":  Ptr: ";
+    cerr << "  " << Msg << ":  Ptr: ";
     WriteAsOperand(std::cerr, Ptr, true, M);
-    llvm_cerr << "\t<->" << *I;
+    cerr << "\t<->" << *I;
   }
 }
 
@@ -125,8 +125,8 @@
 
   if (PrintNoAlias || PrintMayAlias || PrintMustAlias ||
       PrintNoModRef || PrintMod || PrintRef || PrintModRef)
-    llvm_cerr << "Function: " << F.getName() << ": " << Pointers.size()
-              << " pointers, " << CallSites.size() << " call sites\n";
+    cerr << "Function: " << F.getName() << ": " << Pointers.size()
+         << " pointers, " << CallSites.size() << " call sites\n";
 
   // iterate over the worklist, and run the full (n^2)/2 disambiguations
   for (std::set<Value *>::iterator I1 = Pointers.begin(), E = Pointers.end();
@@ -151,7 +151,7 @@
         PrintResults("MustAlias", PrintMustAlias, *I1, *I2, F.getParent());
         ++MustAlias; break;
       default:
-        llvm_cerr << "Unknown alias query result!\n";
+        cerr << "Unknown alias query result!\n";
       }
     }
   }
@@ -181,7 +181,7 @@
         PrintModRefResults("  ModRef", PrintModRef, I, *V, F.getParent());
         ++ModRef; break;
       default:
-        llvm_cerr << "Unknown alias query result!\n";
+        cerr << "Unknown alias query result!\n";
       }
     }
   }
@@ -190,45 +190,45 @@
 }
 
 static void PrintPercent(unsigned Num, unsigned Sum) {
-  llvm_cerr << "(" << Num*100ULL/Sum << "."
+  cerr << "(" << Num*100ULL/Sum << "."
             << ((Num*1000ULL/Sum) % 10) << "%)\n";
 }
 
 bool AAEval::doFinalization(Module &M) {
   unsigned AliasSum = NoAlias + MayAlias + MustAlias;
-  llvm_cerr << "===== Alias Analysis Evaluator Report =====\n";
+  cerr << "===== Alias Analysis Evaluator Report =====\n";
   if (AliasSum == 0) {
-    llvm_cerr << "  Alias Analysis Evaluator Summary: No pointers!\n";
+    cerr << "  Alias Analysis Evaluator Summary: No pointers!\n";
   } else {
-    llvm_cerr << "  " << AliasSum << " Total Alias Queries Performed\n";
-    llvm_cerr << "  " << NoAlias << " no alias responses ";
+    cerr << "  " << AliasSum << " Total Alias Queries Performed\n";
+    cerr << "  " << NoAlias << " no alias responses ";
     PrintPercent(NoAlias, AliasSum);
-    llvm_cerr << "  " << MayAlias << " may alias responses ";
+    cerr << "  " << MayAlias << " may alias responses ";
     PrintPercent(MayAlias, AliasSum);
-    llvm_cerr << "  " << MustAlias << " must alias responses ";
+    cerr << "  " << MustAlias << " must alias responses ";
     PrintPercent(MustAlias, AliasSum);
-    llvm_cerr << "  Alias Analysis Evaluator Pointer Alias Summary: "
-              << NoAlias*100/AliasSum  << "%/" << MayAlias*100/AliasSum << "%/"
-              << MustAlias*100/AliasSum << "%\n";
+    cerr << "  Alias Analysis Evaluator Pointer Alias Summary: "
+         << NoAlias*100/AliasSum  << "%/" << MayAlias*100/AliasSum << "%/"
+         << MustAlias*100/AliasSum << "%\n";
   }
 
   // Display the summary for mod/ref analysis
   unsigned ModRefSum = NoModRef + Mod + Ref + ModRef;
   if (ModRefSum == 0) {
-    llvm_cerr << "  Alias Analysis Mod/Ref Evaluator Summary: no mod/ref!\n";
+    cerr << "  Alias Analysis Mod/Ref Evaluator Summary: no mod/ref!\n";
   } else {
-    llvm_cerr << "  " << ModRefSum << " Total ModRef Queries Performed\n";
-    llvm_cerr << "  " << NoModRef << " no mod/ref responses ";
+    cerr << "  " << ModRefSum << " Total ModRef Queries Performed\n";
+    cerr << "  " << NoModRef << " no mod/ref responses ";
     PrintPercent(NoModRef, ModRefSum);
-    llvm_cerr << "  " << Mod << " mod responses ";
+    cerr << "  " << Mod << " mod responses ";
     PrintPercent(Mod, ModRefSum);
-    llvm_cerr << "  " << Ref << " ref responses ";
+    cerr << "  " << Ref << " ref responses ";
     PrintPercent(Ref, ModRefSum);
-    llvm_cerr << "  " << ModRef << " mod & ref responses ";
+    cerr << "  " << ModRef << " mod & ref responses ";
     PrintPercent(ModRef, ModRefSum);
-    llvm_cerr << "  Alias Analysis Evaluator Mod/Ref Summary: "
-              << NoModRef*100/ModRefSum  << "%/" << Mod*100/ModRefSum << "%/"
-              << Ref*100/ModRefSum << "%/" << ModRef*100/ModRefSum << "%\n";
+    cerr << "  Alias Analysis Evaluator Mod/Ref Summary: "
+         << NoModRef*100/ModRefSum  << "%/" << Mod*100/ModRefSum << "%/"
+         << Ref*100/ModRefSum << "%/" << ModRef*100/ModRefSum << "%\n";
   }
 
   return false;
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index f07ff6f..9ab2b8a 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -543,8 +543,8 @@
   OS << "\n";
 }
 
-void AliasSet::dump() const { print (llvm_cerr); }
-void AliasSetTracker::dump() const { print(llvm_cerr); }
+void AliasSet::dump() const { print (cerr); }
+void AliasSetTracker::dump() const { print(cerr); }
 
 //===----------------------------------------------------------------------===//
 //                            AliasSetPrinter Pass
@@ -564,7 +564,7 @@
 
       for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I)
         Tracker->add(&*I);
-      Tracker->print(llvm_cerr);
+      Tracker->print(cerr);
       delete Tracker;
       return false;
     }
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 26bcb43..ce55b4d 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -745,8 +745,8 @@
     assert(Offset1<Offset2 && "There is at least one different constant here!");
 
     if ((uint64_t)(Offset2-Offset1) >= SizeMax) {
-      //llvm_cerr << "Determined that these two GEP's don't alias ["
-      //          << SizeMax << " bytes]: \n" << *GEP1 << *GEP2;
+      //cerr << "Determined that these two GEP's don't alias ["
+      //     << SizeMax << " bytes]: \n" << *GEP1 << *GEP2;
       return NoAlias;
     }
   }
diff --git a/lib/Analysis/CFGPrinter.cpp b/lib/Analysis/CFGPrinter.cpp
index bfc71c6..f16dca8 100644
--- a/lib/Analysis/CFGPrinter.cpp
+++ b/lib/Analysis/CFGPrinter.cpp
@@ -92,14 +92,14 @@
   struct CFGPrinter : public FunctionPass {
     virtual bool runOnFunction(Function &F) {
       std::string Filename = "cfg." + F.getName() + ".dot";
-      llvm_cerr << "Writing '" << Filename << "'...";
+      cerr << "Writing '" << Filename << "'...";
       std::ofstream File(Filename.c_str());
 
       if (File.good())
         WriteGraph(File, (const Function*)&F);
       else
-        llvm_cerr << "  error opening file for writing!";
-      llvm_cerr << "\n";
+        cerr << "  error opening file for writing!";
+      cerr << "\n";
       return false;
     }
 
diff --git a/lib/Analysis/ConstantRange.cpp b/lib/Analysis/ConstantRange.cpp
index 1f1a1b5..2c21586 100644
--- a/lib/Analysis/ConstantRange.cpp
+++ b/lib/Analysis/ConstantRange.cpp
@@ -370,5 +370,5 @@
 /// dump - Allow printing from a debugger easily...
 ///
 void ConstantRange::dump() const {
-  print(llvm_cerr);
+  print(cerr);
 }
diff --git a/lib/Analysis/DataStructure/BottomUpClosure.cpp b/lib/Analysis/DataStructure/BottomUpClosure.cpp
index f5ca5fd..e8592b1 100644
--- a/lib/Analysis/DataStructure/BottomUpClosure.cpp
+++ b/lib/Analysis/DataStructure/BottomUpClosure.cpp
@@ -501,7 +501,7 @@
     DSG->getNodeForValue(F->arg_begin()).mergeWith(N);
 
   } else {
-    llvm_cerr << "Unrecognized external function: " << F->getName() << "\n";
+    cerr << "Unrecognized external function: " << F->getName() << "\n";
     abort();
   }
 
@@ -588,21 +588,21 @@
         ++NumBUInlines;
       } else {
         if (!Printed)
-          llvm_cerr << "In Fns: " << Graph.getFunctionNames() << "\n";
-        llvm_cerr << "  calls " << CalledFuncs.size()
-                  << " fns from site: " << CS.getCallSite().getInstruction()
-                  << "  " << *CS.getCallSite().getInstruction();
-        llvm_cerr << "   Fns =";
+          cerr << "In Fns: " << Graph.getFunctionNames() << "\n";
+        cerr << "  calls " << CalledFuncs.size()
+             << " fns from site: " << CS.getCallSite().getInstruction()
+             << "  " << *CS.getCallSite().getInstruction();
+        cerr << "   Fns =";
         unsigned NumPrinted = 0;
 
         for (std::vector<Function*>::iterator I = CalledFuncs.begin(),
                E = CalledFuncs.end(); I != E; ++I) {
-          if (NumPrinted++ < 8) llvm_cerr << " " << (*I)->getName();
+          if (NumPrinted++ < 8) cerr << " " << (*I)->getName();
 
           // Add the call edges to the call graph.
           ActualCallees.insert(std::make_pair(TheCall, *I));
         }
-        llvm_cerr << "\n";
+        cerr << "\n";
 
         // See if we already computed a graph for this set of callees.
         std::sort(CalledFuncs.begin(), CalledFuncs.end());
@@ -645,7 +645,7 @@
           // Clean up the final graph!
           GI->removeDeadNodes(DSGraph::KeepUnreachableGlobals);
         } else {
-          llvm_cerr << "***\n*** RECYCLED GRAPH ***\n***\n";
+          cerr << "***\n*** RECYCLED GRAPH ***\n***\n";
         }
 
         GI = IndCallGraph.first;
@@ -685,7 +685,7 @@
          E = MainSM.global_end(); I != E; ++I)
     RC.getClonedNH(MainSM[*I]);
 
-  //Graph.writeGraphToFile(llvm_cerr, "bu_" + F.getName());
+  //Graph.writeGraphToFile(cerr, "bu_" + F.getName());
 }
 
 static const Function *getFnForValue(const Value *V) {
@@ -746,8 +746,8 @@
     return;
   }
 
-  llvm_cerr << *From;
-  llvm_cerr << *To;
+  cerr << *From;
+  cerr << *To;
   assert(0 && "Do not know how to copy this yet!");
   abort();
 }
diff --git a/lib/Analysis/DataStructure/CallTargets.cpp b/lib/Analysis/DataStructure/CallTargets.cpp
index 5ed4457..bae866f 100644
--- a/lib/Analysis/DataStructure/CallTargets.cpp
+++ b/lib/Analysis/DataStructure/CallTargets.cpp
@@ -17,15 +17,15 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Analysis/DataStructure/CallTargets.h"
 #include "llvm/Module.h"
 #include "llvm/Instructions.h"
 #include "llvm/Analysis/DataStructure/DataStructure.h"
 #include "llvm/Analysis/DataStructure/DSGraph.h"
-#include "llvm/Analysis/DataStructure/CallTargets.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Support/Streams.h"
-#include <ostream>
 #include "llvm/Constants.h"
+#include <ostream>
 using namespace llvm;
 
 namespace {
@@ -58,11 +58,11 @@
               } 
               if (N->isComplete() && !IndMap[cs].size()) {
                 ++CompleteEmpty;
-                llvm_cerr << "Call site empty: '"
-                << cs.getInstruction()->getName() 
-                          << "' In '"
-                << cs.getInstruction()->getParent()->getParent()->getName()
-                          << "'\n";
+                cerr << "Call site empty: '"
+                     << cs.getInstruction()->getName() 
+                     << "' In '"
+                     << cs.getInstruction()->getParent()->getParent()->getName()
+                     << "'\n";
               }
             } else {
               ++DirCall;
diff --git a/lib/Analysis/DataStructure/DataStructure.cpp b/lib/Analysis/DataStructure/DataStructure.cpp
index 80237c4..c81fd6a 100644
--- a/lib/Analysis/DataStructure/DataStructure.cpp
+++ b/lib/Analysis/DataStructure/DataStructure.cpp
@@ -25,7 +25,6 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SCCIterator.h"
 #include "llvm/ADT/Statistic.h"
-#include "llvm/Support/Streams.h"
 #include "llvm/Support/Timer.h"
 #include <iostream>
 #include <algorithm>
@@ -1263,7 +1262,7 @@
 }
 
 // dump - Allow inspection of graph in a debugger.
-void DSGraph::dump() const { print(llvm_cerr); }
+void DSGraph::dump() const { print(cerr); }
 
 
 /// remapLinks - Change all of the Links in the current node according to the
diff --git a/lib/Analysis/DataStructure/DataStructureStats.cpp b/lib/Analysis/DataStructure/DataStructureStats.cpp
index f7fbe3b..1357a33 100644
--- a/lib/Analysis/DataStructure/DataStructureStats.cpp
+++ b/lib/Analysis/DataStructure/DataStructureStats.cpp
@@ -92,18 +92,18 @@
         totalNumCallees  += Callees.size();
         ++numIndirectCalls;
       } else
-        llvm_cerr << "WARNING: No callee in Function '" << F.getName()
-                  << "' at call: \n"
-                  << *I->getCallSite().getInstruction();
+        cerr << "WARNING: No callee in Function '" << F.getName()
+             << "' at call: \n"
+             << *I->getCallSite().getInstruction();
     }
 
   TotalNumCallees  += totalNumCallees;
   NumIndirectCalls += numIndirectCalls;
 
   if (numIndirectCalls)
-    llvm_cout << "  In function " << F.getName() << ":  "
-              << (totalNumCallees / (double) numIndirectCalls)
-              << " average callees per indirect call\n";
+    cout << "  In function " << F.getName() << ":  "
+         << (totalNumCallees / (double) numIndirectCalls)
+         << " average callees per indirect call\n";
 }
 
 DSNode *DSGraphStats::getNodeForValue(Value *V) {
diff --git a/lib/Analysis/DataStructure/EquivClassGraphs.cpp b/lib/Analysis/DataStructure/EquivClassGraphs.cpp
index 49c93ff..2813b94 100644
--- a/lib/Analysis/DataStructure/EquivClassGraphs.cpp
+++ b/lib/Analysis/DataStructure/EquivClassGraphs.cpp
@@ -90,7 +90,7 @@
   if (MainFunc && !MainFunc->isExternal()) {
     processSCC(getOrCreateGraph(*MainFunc), Stack, NextID, ValMap);
   } else {
-    llvm_cerr << "Fold Graphs: No 'main' function found!\n";
+    cerr << "Fold Graphs: No 'main' function found!\n";
   }
 
   for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
diff --git a/lib/Analysis/DataStructure/GraphChecker.cpp b/lib/Analysis/DataStructure/GraphChecker.cpp
index cef3efe..8e4d3fc 100644
--- a/lib/Analysis/DataStructure/GraphChecker.cpp
+++ b/lib/Analysis/DataStructure/GraphChecker.cpp
@@ -84,8 +84,8 @@
 DSGC::DSGC() {
   if (!AbortIfAnyCollapsed && AbortIfCollapsed.empty() &&
       CheckFlags.empty() && AbortIfMerged.empty()) {
-    llvm_cerr << "The -datastructure-gc is useless if you don't specify any"
-                 " -dsgc-* options.  See the -help-hidden output for a list.\n";
+    cerr << "The -datastructure-gc is useless if you don't specify any"
+         << " -dsgc-* options.  See the -help-hidden output for a list.\n";
     abort();
   }
 }
@@ -123,8 +123,8 @@
     for (DSGraph::node_const_iterator I = G.node_begin(), E = G.node_end();
          I != E; ++I)
       if (I->isNodeCompletelyFolded()) {
-        llvm_cerr << "Node is collapsed: ";
-        I->print(llvm_cerr, &G);
+        cerr << "Node is collapsed: ";
+        I->print(cerr, &G);
         abort();
       }
   }
@@ -142,8 +142,8 @@
            E = CheckFlags.end(); I != E; ++I) {
       std::string::size_type ColonPos = I->rfind(':');
       if (ColonPos == std::string::npos) {
-        llvm_cerr << "Error: '" << *I
-               << "' is an invalid value for the --dsgc-check-flags option!\n";
+        cerr << "Error: '" << *I
+             << "' is an invalid value for the --dsgc-check-flags option!\n";
         abort();
       }
 
@@ -158,7 +158,7 @@
         case 'M': Flags |= DSNode::Modified;    break;
         case 'R': Flags |= DSNode::Read;        break;
         case 'A': Flags |= DSNode::Array;       break;
-        default: llvm_cerr << "Invalid DSNode flag!\n"; abort();
+        default: cerr << "Invalid DSNode flag!\n"; abort();
         }
       CheckFlagsM[std::string(I->begin(), I->begin()+ColonPos)] = Flags;
     }
@@ -176,25 +176,25 @@
 
         // Verify it is not collapsed if it is not supposed to be...
         if (N->isNodeCompletelyFolded() && AbortIfCollapsedS.count(Name)) {
-          llvm_cerr << "Node for value '%" << Name << "' is collapsed: ";
-          N->print(llvm_cerr, &G);
+          cerr << "Node for value '%" << Name << "' is collapsed: ";
+          N->print(cerr, &G);
           abort();
         }
 
         if (CheckFlagsM.count(Name) && CheckFlagsM[Name] != N->getNodeFlags()) {
-          llvm_cerr << "Node flags are not as expected for node: " << Name 
-                    << " (" << CheckFlagsM[Name] << ":" <<N->getNodeFlags()
-                    << ")\n";
-          N->print(llvm_cerr, &G);
+          cerr << "Node flags are not as expected for node: " << Name 
+               << " (" << CheckFlagsM[Name] << ":" <<N->getNodeFlags()
+               << ")\n";
+          N->print(cerr, &G);
           abort();
         }
 
         // Verify that it is not merged if it is not supposed to be...
         if (AbortIfMergedS.count(Name)) {
           if (AbortIfMergedNodes.count(N)) {
-            llvm_cerr << "Nodes for values '%" << Name << "' and '%"
-                      << AbortIfMergedNodes[N] << "' is merged: ";
-            N->print(llvm_cerr, &G);
+            cerr << "Nodes for values '%" << Name << "' and '%"
+                 << AbortIfMergedNodes[N] << "' is merged: ";
+            N->print(cerr, &G);
             abort();
           }
           AbortIfMergedNodes[N] = Name;
diff --git a/lib/Analysis/DataStructure/Local.cpp b/lib/Analysis/DataStructure/Local.cpp
index 436218b..66ca33d 100644
--- a/lib/Analysis/DataStructure/Local.cpp
+++ b/lib/Analysis/DataStructure/Local.cpp
@@ -434,7 +434,7 @@
         // Variable index into a node.  We must merge all of the elements of the
         // sequential type here.
         if (isa<PointerType>(STy))
-          llvm_cerr << "Pointer indexing not handled yet!\n";
+          cerr << "Pointer indexing not handled yet!\n";
         else {
           const ArrayType *ATy = cast<ArrayType>(STy);
           unsigned ElSize = TD.getTypeSize(CurTy);
@@ -1061,7 +1061,7 @@
   if (DisableDirectCallOpt || !isa<Function>(Callee)) {
     CalleeNode = getValueDest(*Callee).getNode();
     if (CalleeNode == 0) {
-      llvm_cerr << "WARNING: Program is calling through a null pointer?\n"<< *I;
+      cerr << "WARNING: Program is calling through a null pointer?\n"<< *I;
       return;  // Calling a null pointer?
     }
   }
diff --git a/lib/Analysis/DataStructure/Printer.cpp b/lib/Analysis/DataStructure/Printer.cpp
index 2e86bda..21d75c0 100644
--- a/lib/Analysis/DataStructure/Printer.cpp
+++ b/lib/Analysis/DataStructure/Printer.cpp
@@ -37,7 +37,7 @@
   Statistic NumFoldedNodes ("dsa", "Number of folded nodes (in final graph)");
 }
 
-void DSNode::dump() const { print(llvm_cerr, 0); }
+void DSNode::dump() const { print(cerr, 0); }
 
 static std::string getCaption(const DSNode *N, const DSGraph *G) {
   std::stringstream OS;
diff --git a/lib/Analysis/DataStructure/Steensgaard.cpp b/lib/Analysis/DataStructure/Steensgaard.cpp
index 292dfff..5ff3c3f 100644
--- a/lib/Analysis/DataStructure/Steensgaard.cpp
+++ b/lib/Analysis/DataStructure/Steensgaard.cpp
@@ -53,7 +53,7 @@
     }
 
     // print - Implement the Pass::print method...
-    void print(llvm_ostream O, const Module *M) const {
+    void print(OStream O, const Module *M) const {
       if (O.stream()) print(*O.stream(), M);
     }
     void print(std::ostream &O, const Module *M) const {
diff --git a/lib/Analysis/IPA/Andersens.cpp b/lib/Analysis/IPA/Andersens.cpp
index 2887503..6946227 100644
--- a/lib/Analysis/IPA/Andersens.cpp
+++ b/lib/Analysis/IPA/Andersens.cpp
@@ -533,7 +533,7 @@
     case Instruction::BitCast:
       return getNodeForConstantPointer(CE->getOperand(0));
     default:
-      llvm_cerr << "Constant Expr not yet handled: " << *CE << "\n";
+      cerr << "Constant Expr not yet handled: " << *CE << "\n";
       assert(0);
     }
   } else {
@@ -560,7 +560,7 @@
     case Instruction::BitCast:
       return getNodeForConstantPointerTarget(CE->getOperand(0));
     default:
-      llvm_cerr << "Constant Expr not yet handled: " << *CE << "\n";
+      cerr << "Constant Expr not yet handled: " << *CE << "\n";
       assert(0);
     }
   } else {
@@ -786,7 +786,7 @@
     return;
   default:
     // Is this something we aren't handling yet?
-    llvm_cerr << "Unknown instruction: " << I;
+    cerr << "Unknown instruction: " << I;
     abort();
   }
 }
@@ -1104,13 +1104,13 @@
 
 void Andersens::PrintNode(Node *N) {
   if (N == &GraphNodes[UniversalSet]) {
-    llvm_cerr << "<universal>";
+    cerr << "<universal>";
     return;
   } else if (N == &GraphNodes[NullPtr]) {
-    llvm_cerr << "<nullptr>";
+    cerr << "<nullptr>";
     return;
   } else if (N == &GraphNodes[NullObject]) {
-    llvm_cerr << "<null>";
+    cerr << "<null>";
     return;
   }
 
@@ -1119,56 +1119,56 @@
   if (Function *F = dyn_cast<Function>(V)) {
     if (isa<PointerType>(F->getFunctionType()->getReturnType()) &&
         N == getReturnNode(F)) {
-      llvm_cerr << F->getName() << ":retval";
+      cerr << F->getName() << ":retval";
       return;
     } else if (F->getFunctionType()->isVarArg() && N == getVarargNode(F)) {
-      llvm_cerr << F->getName() << ":vararg";
+      cerr << F->getName() << ":vararg";
       return;
     }
   }
 
   if (Instruction *I = dyn_cast<Instruction>(V))
-    llvm_cerr << I->getParent()->getParent()->getName() << ":";
+    cerr << I->getParent()->getParent()->getName() << ":";
   else if (Argument *Arg = dyn_cast<Argument>(V))
-    llvm_cerr << Arg->getParent()->getName() << ":";
+    cerr << Arg->getParent()->getName() << ":";
 
   if (V->hasName())
-    llvm_cerr << V->getName();
+    cerr << V->getName();
   else
-    llvm_cerr << "(unnamed)";
+    cerr << "(unnamed)";
 
   if (isa<GlobalValue>(V) || isa<AllocationInst>(V))
     if (N == getObject(V))
-      llvm_cerr << "<mem>";
+      cerr << "<mem>";
 }
 
 void Andersens::PrintConstraints() {
-  llvm_cerr << "Constraints:\n";
+  cerr << "Constraints:\n";
   for (unsigned i = 0, e = Constraints.size(); i != e; ++i) {
-    llvm_cerr << "  #" << i << ":  ";
+    cerr << "  #" << i << ":  ";
     Constraint &C = Constraints[i];
     if (C.Type == Constraint::Store)
-      llvm_cerr << "*";
+      cerr << "*";
     PrintNode(C.Dest);
-    llvm_cerr << " = ";
+    cerr << " = ";
     if (C.Type == Constraint::Load)
-      llvm_cerr << "*";
+      cerr << "*";
     PrintNode(C.Src);
-    llvm_cerr << "\n";
+    cerr << "\n";
   }
 }
 
 void Andersens::PrintPointsToGraph() {
-  llvm_cerr << "Points-to graph:\n";
+  cerr << "Points-to graph:\n";
   for (unsigned i = 0, e = GraphNodes.size(); i != e; ++i) {
     Node *N = &GraphNodes[i];
-    llvm_cerr << "[" << (N->end() - N->begin()) << "] ";
+    cerr << "[" << (N->end() - N->begin()) << "] ";
     PrintNode(N);
-    llvm_cerr << "\t--> ";
+    cerr << "\t--> ";
     for (Node::iterator I = N->begin(), E = N->end(); I != E; ++I) {
-      if (I != N->begin()) llvm_cerr << ", ";
+      if (I != N->begin()) cerr << ", ";
       PrintNode(*I);
     }
-    llvm_cerr << "\n";
+    cerr << "\n";
   }
 }
diff --git a/lib/Analysis/IPA/CallGraph.cpp b/lib/Analysis/IPA/CallGraph.cpp
index 128e11e..6e8ca18 100644
--- a/lib/Analysis/IPA/CallGraph.cpp
+++ b/lib/Analysis/IPA/CallGraph.cpp
@@ -74,7 +74,7 @@
     AU.setPreservesAll();
   }
 
-  void print(llvm_ostream &o, const Module *M) const {
+  void print(OStream &o, const Module *M) const {
     if (o.stream()) print(*o.stream(), M);
   }
 
@@ -95,7 +95,7 @@
   /// dump - Print out this call graph.
   ///
   inline void dump() const {
-    print(llvm_cerr, Mod);
+    print(cerr, Mod);
   }
 
   CallGraphNode* getExternalCallingNode() const { return ExternalCallingNode; }
@@ -212,7 +212,7 @@
 }
 
 void CallGraph::dump() const {
-  print(llvm_cerr, 0);
+  print(cerr, 0);
 }
 
 //===----------------------------------------------------------------------===//
@@ -275,7 +275,7 @@
   OS << "\n";
 }
 
-void CallGraphNode::dump() const { print(llvm_cerr); }
+void CallGraphNode::dump() const { print(cerr); }
 
 void CallGraphNode::removeCallEdgeTo(CallGraphNode *Callee) {
   for (unsigned i = CalledFunctions.size(); ; --i) {
diff --git a/lib/Analysis/InstCount.cpp b/lib/Analysis/InstCount.cpp
index 38f0bba..04dfbf4 100644
--- a/lib/Analysis/InstCount.cpp
+++ b/lib/Analysis/InstCount.cpp
@@ -43,7 +43,7 @@
 #include "llvm/Instruction.def"
 
     void visitInstruction(Instruction &I) {
-      llvm_cerr << "Instruction Count does not know about " << I;
+      cerr << "Instruction Count does not know about " << I;
       abort();
     }
   public:
diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index 1895760..b33e414 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -80,7 +80,7 @@
 }
 
 void Loop::dump() const {
-  print(llvm_cerr);
+  print(cerr);
 }
 
 
diff --git a/lib/Analysis/ProfileInfoLoader.cpp b/lib/Analysis/ProfileInfoLoader.cpp
index 3c19f5e..b1ed235 100644
--- a/lib/Analysis/ProfileInfoLoader.cpp
+++ b/lib/Analysis/ProfileInfoLoader.cpp
@@ -37,7 +37,7 @@
   // Read the number of entries...
   unsigned NumEntries;
   if (fread(&NumEntries, sizeof(unsigned), 1, F) != 1) {
-    llvm_cerr << ToolName << ": data packet truncated!\n";
+    cerr << ToolName << ": data packet truncated!\n";
     perror(0);
     exit(1);
   }
@@ -48,7 +48,7 @@
 
   // Read in the block of data...
   if (fread(&TempSpace[0], sizeof(unsigned)*NumEntries, 1, F) != 1) {
-    llvm_cerr << ToolName << ": data packet truncated!\n";
+    cerr << ToolName << ": data packet truncated!\n";
     perror(0);
     exit(1);
   }
@@ -75,7 +75,7 @@
                                      Module &TheModule) : M(TheModule) {
   FILE *F = fopen(Filename.c_str(), "r");
   if (F == 0) {
-    llvm_cerr << ToolName << ": Error opening '" << Filename << "': ";
+    cerr << ToolName << ": Error opening '" << Filename << "': ";
     perror(0);
     exit(1);
   }
@@ -93,7 +93,7 @@
     case ArgumentInfo: {
       unsigned ArgLength;
       if (fread(&ArgLength, sizeof(unsigned), 1, F) != 1) {
-        llvm_cerr << ToolName << ": arguments packet truncated!\n";
+        cerr << ToolName << ": arguments packet truncated!\n";
         perror(0);
         exit(1);
       }
@@ -104,7 +104,7 @@
 
       if (ArgLength)
         if (fread(&Chars[0], (ArgLength+3) & ~3, 1, F) != 1) {
-          llvm_cerr << ToolName << ": arguments packet truncated!\n";
+          cerr << ToolName << ": arguments packet truncated!\n";
           perror(0);
           exit(1);
         }
@@ -129,7 +129,7 @@
       break;
 
     default:
-      llvm_cerr << ToolName << ": Unknown packet type #" << PacketType << "!\n";
+      cerr << ToolName << ": Unknown packet type #" << PacketType << "!\n";
       exit(1);
     }
   }
@@ -156,7 +156,7 @@
           Counts.push_back(std::make_pair(BlockCounts[i].first->getParent(),
                                           BlockCounts[i].second));
     } else {
-      llvm_cerr << "Function counts are not available!\n";
+      cerr << "Function counts are not available!\n";
     }
     return;
   }
@@ -200,8 +200,8 @@
         if (SuccNum >= TI->getNumSuccessors()) {
           static bool Warned = false;
           if (!Warned) {
-            llvm_cerr << "WARNING: profile info doesn't seem to match"
-                      << " the program!\n";
+            cerr << "WARNING: profile info doesn't seem to match"
+                 << " the program!\n";
             Warned = true;
           }
         } else {
@@ -226,7 +226,7 @@
       }
 
     } else {
-      llvm_cerr << "Block counts are not available!\n";
+      cerr << "Block counts are not available!\n";
     }
     return;
   }
@@ -247,8 +247,8 @@
 void ProfileInfoLoader::getEdgeCounts(std::vector<std::pair<Edge,
                                                   unsigned> > &Counts) {
   if (EdgeCounts.empty()) {
-    llvm_cerr << "Edge counts not available, and no synthesis "
-              << "is implemented yet!\n";
+    cerr << "Edge counts not available, and no synthesis "
+         << "is implemented yet!\n";
     return;
   }
 
@@ -268,9 +268,8 @@
 //
 void ProfileInfoLoader::getBBTrace(std::vector<BasicBlock *> &Trace) {
   if (BBTrace.empty ()) {
-    llvm_cerr << "Basic block trace is not available!\n";
+    cerr << "Basic block trace is not available!\n";
     return;
   }
-  llvm_cerr << "Basic block trace loading is not implemented yet!\n";
+  cerr << "Basic block trace loading is not implemented yet!\n";
 }
-
diff --git a/lib/Analysis/ProfileInfoLoaderPass.cpp b/lib/Analysis/ProfileInfoLoaderPass.cpp
index 08a45c6..426bd18 100644
--- a/lib/Analysis/ProfileInfoLoaderPass.cpp
+++ b/lib/Analysis/ProfileInfoLoaderPass.cpp
@@ -76,8 +76,8 @@
     TerminatorInst *TI = BB->getTerminator();
     if (SuccNum >= TI->getNumSuccessors()) {
       if (!PrintedWarning) {
-        llvm_cerr << "WARNING: profile information is inconsistent with "
-                  << "the current program!\n";
+        cerr << "WARNING: profile information is inconsistent with "
+             << "the current program!\n";
         PrintedWarning = true;
       }
     } else {
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index ba903e0..9fc0c76 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -118,7 +118,7 @@
 //
 SCEV::~SCEV() {}
 void SCEV::dump() const {
-  print(llvm_cerr);
+  print(cerr);
 }
 
 /// getValueRange - Return the tightest constant bounds that this value is
@@ -1558,11 +1558,11 @@
     break;
   default:
 #if 0
-    llvm_cerr << "ComputeIterationCount ";
+    cerr << "ComputeIterationCount ";
     if (ExitCond->getOperand(0)->getType()->isUnsigned())
-      llvm_cerr << "[unsigned] ";
-    llvm_cerr << *LHS << "   "
-              << Instruction::getOpcodeName(Cond) << "   " << *RHS << "\n";
+      cerr << "[unsigned] ";
+    cerr << *LHS << "   "
+         << Instruction::getOpcodeName(Cond) << "   " << *RHS << "\n";
 #endif
     break;
   }
@@ -1678,9 +1678,9 @@
     if (!isa<ConstantBool>(Result)) break;  // Couldn't decide for sure
     if (cast<ConstantBool>(Result)->getValue() == false) {
 #if 0
-      llvm_cerr << "\n***\n*** Computed loop count " << *ItCst
-                << "\n*** From global " << *GV << "*** BB: " << *L->getHeader()
-                << "***\n";
+      cerr << "\n***\n*** Computed loop count " << *ItCst
+           << "\n*** From global " << *GV << "*** BB: " << *L->getHeader()
+           << "***\n";
 #endif
       ++NumArrayLenItCounts;
       return SCEVConstant::get(ItCst);   // Found terminating iteration!
@@ -2147,8 +2147,8 @@
     SCEVConstant *R2 = dyn_cast<SCEVConstant>(Roots.second);
     if (R1) {
 #if 0
-      llvm_cerr << "HFTZ: " << *V << " - sol#1: " << *R1
-                << "  sol#2: " << *R2 << "\n";
+      cerr << "HFTZ: " << *V << " - sol#1: " << *R1
+           << "  sol#2: " << *R2 << "\n";
 #endif
       // Pick the smallest positive root value.
       assert(R1->getType()->isUnsigned()&&"Didn't canonicalize to unsigned?");
@@ -2276,8 +2276,8 @@
     default: break;
     }
 
-    //llvm_cerr << "Computed Loop Trip Count as: " <<
-    //  *SCEV::getMinusSCEV(RHS, AddRec->getOperand(0)) << "\n";
+    //cerr << "Computed Loop Trip Count as: "
+    //     << *SCEV::getMinusSCEV(RHS, AddRec->getOperand(0)) << "\n";
     return SCEV::getMinusSCEV(RHS, AddRec->getOperand(0));
   }
 
@@ -2492,20 +2492,20 @@
   for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I)
     PrintLoopInfo(OS, SE, *I);
 
-  llvm_cerr << "Loop " << L->getHeader()->getName() << ": ";
+  cerr << "Loop " << L->getHeader()->getName() << ": ";
 
   std::vector<BasicBlock*> ExitBlocks;
   L->getExitBlocks(ExitBlocks);
   if (ExitBlocks.size() != 1)
-    llvm_cerr << "<multiple exits> ";
+    cerr << "<multiple exits> ";
 
   if (SE->hasLoopInvariantIterationCount(L)) {
-    llvm_cerr << *SE->getIterationCount(L) << " iterations! ";
+    cerr << *SE->getIterationCount(L) << " iterations! ";
   } else {
-    llvm_cerr << "Unpredictable iteration count. ";
+    cerr << "Unpredictable iteration count. ";
   }
 
-  llvm_cerr << "\n";
+  cerr << "\n";
 }
 
 void ScalarEvolution::print(std::ostream &OS, const Module* ) const {
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 2698ace..9432cc2 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -13,9 +13,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
-
+#include "llvm/Analysis/LoopInfo.h"
 using namespace llvm;
 
 /// InsertCastOfTo - Insert a cast of V to the specified type, doing what
@@ -175,7 +174,7 @@
   SCEVHandle IH = SCEVUnknown::get(I);   // Get I as a "symbolic" SCEV.
 
   SCEVHandle V = S->evaluateAtIteration(IH);
-  //llvm_cerr << "Evaluated: " << *this << "\n     to: " << *V << "\n";
+  //cerr << "Evaluated: " << *this << "\n     to: " << *V << "\n";
 
   return expandInTy(V, Ty);
 }
diff --git a/lib/Analysis/Trace.cpp b/lib/Analysis/Trace.cpp
index d045755..a0aa955 100644
--- a/lib/Analysis/Trace.cpp
+++ b/lib/Analysis/Trace.cpp
@@ -25,14 +25,13 @@
   return getEntryBasicBlock()->getParent();
 }
 
-
 Module *Trace::getModule() const {
   return getFunction()->getParent();
 }
 
 /// print - Write trace to output stream.
 ///
-void Trace::print(llvm_ostream &O) const {
+void Trace::print(OStream &O) const {
   Function *F = getFunction ();
   O << "; Trace from function " << F->getName() << ", blocks:\n";
   for (const_iterator i = begin(), e = end(); i != e; ++i) {
@@ -48,5 +47,5 @@
 /// output stream.
 ///
 void Trace::dump() const {
-  print(llvm_cerr);
+  print(cerr);
 }