From c3f05e854aa3591a7281869e20b49818fae9ffd6 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Sat, 22 Aug 2009 20:03:00 +0000
Subject: [PATCH] Convert DOUT to DEBUG(errs()...).

llvm-svn: 79747
---
 llvm/lib/CodeGen/BranchFolding.cpp | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/llvm/lib/CodeGen/BranchFolding.cpp b/llvm/lib/CodeGen/BranchFolding.cpp
index 1ce83f81af4c..c11765037cda 100644
--- a/llvm/lib/CodeGen/BranchFolding.cpp
+++ b/llvm/lib/CodeGen/BranchFolding.cpp
@@ -28,6 +28,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/STLExtras.h"
@@ -108,7 +109,7 @@ FunctionPass *llvm::createBranchFoldingPass(bool DefaultEnableTailMerge) {
 /// function, updating the CFG.
 void BranchFolder::RemoveDeadBlock(MachineBasicBlock *MBB) {
   assert(MBB->pred_empty() && "MBB must be dead!");
-  DOUT << "\nRemoving MBB: " << *MBB;
+  DEBUG(errs() << "\nRemoving MBB: " << *MBB);
   
   MachineFunction *MF = MBB->getParent();
   // drop all successors.
@@ -568,8 +569,8 @@ unsigned BranchFolder::CreateCommonTailOnlyBlock(MachineBasicBlock *&PredBB,
   MachineBasicBlock::iterator BBI = SameTails[commonTailIndex].second;
   MachineBasicBlock *MBB = SameTails[commonTailIndex].first->second;
 
-  DOUT << "\nSplitting " << MBB->getNumber() << ", size " << 
-          maxCommonTailLength;
+  DEBUG(errs() << "\nSplitting " << MBB->getNumber() << ", size "
+               << maxCommonTailLength);
 
   MachineBasicBlock *newMBB = SplitMBBAt(*MBB, BBI);
   SameTails[commonTailIndex].first->second = newMBB;
@@ -597,7 +598,7 @@ bool BranchFolder::TryMergeBlocks(MachineBasicBlock *SuccBB,
   unsigned minCommonTailLength = (SuccBB ? 1 : 2) + 1;
   MadeChange = false;
   
-  DOUT << "\nTryMergeBlocks " << MergePotentials.size() << '\n';
+  DEBUG(errs() << "\nTryMergeBlocks " << MergePotentials.size() << '\n');
 
   // Sort by hash value so that blocks with identical end sequences sort
   // together.
@@ -644,17 +645,17 @@ bool BranchFolder::TryMergeBlocks(MachineBasicBlock *SuccBB,
     MachineBasicBlock *MBB = SameTails[commonTailIndex].first->second;
     // MBB is common tail.  Adjust all other BB's to jump to this one.
     // Traversal must be forwards so erases work.
-    DOUT << "\nUsing common tail " << MBB->getNumber() << " for ";
+    DEBUG(errs() << "\nUsing common tail " << MBB->getNumber() << " for ");
     for (unsigned int i=0; i<SameTails.size(); ++i) {
       if (commonTailIndex==i)
         continue;
-      DOUT << SameTails[i].first->second->getNumber() << ",";
+      DEBUG(errs() << SameTails[i].first->second->getNumber() << ",");
       // Hack the end off BB i, making it jump to BB commonTailIndex instead.
       ReplaceTailWithBranchTo(SameTails[i].second, MBB);
       // BB i is no longer a predecessor of SuccBB; remove it from the worklist.
       MergePotentials.erase(SameTails[i].first);
     }
-    DOUT << "\n";
+    DEBUG(errs() << "\n");
     // We leave commonTailIndex in the worklist in case there are other blocks
     // that match it with a smaller number of instructions.
     MadeChange = true;
@@ -1008,8 +1009,8 @@ void BranchFolder::OptimizeBlock(MachineBasicBlock *MBB) {
         // Reverse the branch so we will fall through on the previous true cond.
         SmallVector<MachineOperand, 4> NewPriorCond(PriorCond);
         if (!TII->ReverseBranchCondition(NewPriorCond)) {
-          DOUT << "\nMoving MBB: " << *MBB;
-          DOUT << "To make fallthrough to: " << *PriorTBB << "\n";
+          DEBUG(errs() << "\nMoving MBB: " << *MBB
+                       << "To make fallthrough to: " << *PriorTBB << "\n");
           
           TII->RemoveBranch(PrevBB);
           TII->InsertBranch(PrevBB, MBB, 0, NewPriorCond);