diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 4d1370a..7fbdb12 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -20,6 +20,7 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/LeakDetector.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/Assembly/Writer.h"
 #include <algorithm>
 using namespace llvm;
 
@@ -161,11 +162,11 @@
 
 static inline void OutputReg(raw_ostream &os, unsigned RegNo,
                              const TargetRegisterInfo *TRI = 0) {
-  if (!RegNo || TargetRegisterInfo::isPhysicalRegister(RegNo)) {
+  if (RegNo != 0 && TargetRegisterInfo::isPhysicalRegister(RegNo)) {
     if (TRI)
       os << " %" << TRI->get(RegNo).Name;
     else
-      os << " %mreg(" << RegNo << ")";
+      os << " %physreg" << RegNo;
   } else
     os << " %reg" << RegNo;
 }
@@ -178,19 +179,23 @@
     return;
   }
 
-  const BasicBlock *LBB = getBasicBlock();
+  if (Alignment) { OS << "Alignment " << Alignment << "\n"; }
+
+  OS << "BB#" << getNumber() << ": ";
+
+  const char *Comma = "";
+  if (const BasicBlock *LBB = getBasicBlock()) {
+    OS << Comma << "derived from LLVM BB ";
+    WriteAsOperand(OS, LBB, /*PrintType=*/false);
+    Comma = ", ";
+  }
+  if (isLandingPad()) { OS << Comma << "EH LANDING PAD"; Comma = ", "; }
+  if (hasAddressTaken()) { OS << Comma << "ADDRESS TAKEN"; Comma = ", "; }
   OS << '\n';
-  if (LBB) OS << LBB->getName() << ": ";
-  OS << (const void*)this
-     << ", LLVM BB @" << (const void*) LBB << ", ID#" << getNumber();
-  if (Alignment) OS << ", Alignment " << Alignment;
-  if (isLandingPad()) OS << ", EH LANDING PAD";
-  if (hasAddressTaken()) OS << ", ADDRESS TAKEN";
-  OS << ":\n";
 
   const TargetRegisterInfo *TRI = MF->getTarget().getRegisterInfo();  
   if (!livein_empty()) {
-    OS << "Live Ins:";
+    OS << "    Live Ins:";
     for (const_livein_iterator I = livein_begin(),E = livein_end(); I != E; ++I)
       OutputReg(OS, *I, TRI);
     OS << '\n';
@@ -199,7 +204,7 @@
   if (!pred_empty()) {
     OS << "    Predecessors according to CFG:";
     for (const_pred_iterator PI = pred_begin(), E = pred_end(); PI != E; ++PI)
-      OS << ' ' << *PI << " (#" << (*PI)->getNumber() << ')';
+      OS << " BB#" << (*PI)->getNumber();
     OS << '\n';
   }
   
@@ -212,7 +217,7 @@
   if (!succ_empty()) {
     OS << "    Successors according to CFG:";
     for (const_succ_iterator SI = succ_begin(), E = succ_end(); SI != E; ++SI)
-      OS << ' ' << *SI << " (#" << (*SI)->getNumber() << ')';
+      OS << " BB#" << (*SI)->getNumber();
     OS << '\n';
   }
 }
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 0835a5c..5a1d9e6 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -52,7 +52,7 @@
     }
 
     bool runOnMachineFunction(MachineFunction &MF) {
-      OS << Banner;
+      OS << "# " << Banner << ":\n";
       MF.print(OS);
       return false;
     }
@@ -303,7 +303,7 @@
 }
 
 void MachineFunction::print(raw_ostream &OS) const {
-  OS << "# Machine code for " << Fn->getName() << "():\n";
+  OS << "# Machine code for function " << Fn->getName() << ":\n";
 
   // Print Frame Information
   FrameInfo->print(*this, OS);
@@ -317,34 +317,43 @@
   const TargetRegisterInfo *TRI = getTarget().getRegisterInfo();
   
   if (RegInfo && !RegInfo->livein_empty()) {
-    OS << "Live Ins:";
+    OS << "Function Live Ins: ";
     for (MachineRegisterInfo::livein_iterator
          I = RegInfo->livein_begin(), E = RegInfo->livein_end(); I != E; ++I) {
       if (TRI)
-        OS << " " << TRI->getName(I->first);
+        OS << "%" << TRI->getName(I->first);
       else
-        OS << " Reg #" << I->first;
+        OS << " %physreg" << I->first;
       
       if (I->second)
-        OS << " in VR#" << I->second << ' ';
+        OS << " in reg%" << I->second;
+
+      if (next(I) != E)
+        OS << ", ";
     }
     OS << '\n';
   }
   if (RegInfo && !RegInfo->liveout_empty()) {
-    OS << "Live Outs:";
+    OS << "Function Live Outs: ";
     for (MachineRegisterInfo::liveout_iterator
-         I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I)
+         I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I){
       if (TRI)
-        OS << ' ' << TRI->getName(*I);
+        OS << '%' << TRI->getName(*I);
       else
-        OS << " Reg #" << *I;
+        OS << "%physreg" << *I;
+
+      if (next(I) != E)
+        OS << " ";
+    }
     OS << '\n';
   }
   
-  for (const_iterator BB = begin(), E = end(); BB != E; ++BB)
+  for (const_iterator BB = begin(), E = end(); BB != E; ++BB) {
+    OS << '\n';
     BB->print(OS);
+  }
 
-  OS << "\n# End machine code for " << Fn->getName() << "().\n\n";
+  OS << "\n# End machine code for function " << Fn->getName() << ".\n\n";
 }
 
 namespace llvm {
@@ -471,12 +480,16 @@
 
 
 void MachineFrameInfo::print(const MachineFunction &MF, raw_ostream &OS) const{
+  if (Objects.empty()) return;
+
   const TargetFrameInfo *FI = MF.getTarget().getFrameInfo();
   int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0);
 
+  OS << "Frame Objects:\n";
+
   for (unsigned i = 0, e = Objects.size(); i != e; ++i) {
     const StackObject &SO = Objects[i];
-    OS << "  <fi#" << (int)(i-NumFixedObjects) << ">: ";
+    OS << "  fi#" << (int)(i-NumFixedObjects) << ": ";
     if (SO.Size == ~0ULL) {
       OS << "dead\n";
       continue;
@@ -484,15 +497,14 @@
     if (SO.Size == 0)
       OS << "variable sized";
     else
-      OS << "size is " << SO.Size << " byte" << (SO.Size != 1 ? "s," : ",");
-    OS << " alignment is " << SO.Alignment << " byte"
-       << (SO.Alignment != 1 ? "s," : ",");
+      OS << "size=" << SO.Size;
+    OS << ", align=" << SO.Alignment;
 
     if (i < NumFixedObjects)
-      OS << " fixed";
+      OS << ", fixed";
     if (i < NumFixedObjects || SO.SPOffset != -1) {
       int64_t Off = SO.SPOffset - ValOffset;
-      OS << " at location [SP";
+      OS << ", at location [SP";
       if (Off > 0)
         OS << "+" << Off;
       else if (Off < 0)
@@ -501,9 +513,6 @@
     }
     OS << "\n";
   }
-
-  if (HasVarSizedObjects)
-    OS << "  Stack frame contains variable sized objects\n";
 }
 
 void MachineFrameInfo::dump(const MachineFunction &MF) const {
@@ -547,12 +556,17 @@
 }
 
 void MachineJumpTableInfo::print(raw_ostream &OS) const {
-  // FIXME: this is lame, maybe we could print out the MBB numbers or something
-  // like {1, 2, 4, 5, 3, 0}
+  if (JumpTables.empty()) return;
+
+  OS << "Jump Tables:\n";
+
   for (unsigned i = 0, e = JumpTables.size(); i != e; ++i) {
-    OS << "  <jt#" << i << "> has " << JumpTables[i].MBBs.size() 
-       << " entries\n";
+    OS << "  jt#" << i << ": ";
+    for (unsigned j = 0, f = JumpTables[i].MBBs.size(); j != f; ++j)
+      OS << " BB#" << JumpTables[i].MBBs[j]->getNumber();
   }
+
+  OS << '\n';
 }
 
 void MachineJumpTableInfo::dump() const { print(errs()); }
@@ -664,13 +678,16 @@
 }
 
 void MachineConstantPool::print(raw_ostream &OS) const {
+  if (Constants.empty()) return;
+
+  OS << "Constant Pool:\n";
   for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
-    OS << "  <cp#" << i << "> is";
+    OS << "  cp#" << i << ": ";
     if (Constants[i].isMachineConstantPoolEntry())
       Constants[i].Val.MachineCPVal->print(OS);
     else
       OS << *(Value*)Constants[i].Val.ConstVal;
-    OS << " , alignment=" << Constants[i].getAlignment();
+    OS << ", align=" << Constants[i].getAlignment();
     OS << "\n";
   }
 }
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index c27ecff..5744c8a5 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -205,7 +205,7 @@
       if (TM)
         OS << "%" << TM->getRegisterInfo()->get(getReg()).Name;
       else
-        OS << "%mreg" << getReg();
+        OS << "%physreg" << getReg();
     }
 
     if (getSubReg() != 0)
@@ -251,9 +251,7 @@
       OS << getFPImm()->getValueAPF().convertToDouble();
     break;
   case MachineOperand::MO_MachineBasicBlock:
-    OS << "mbb<"
-       << ((Value*)getMBB()->getBasicBlock())->getName()
-       << "," << (void*)getMBB() << '>';
+    OS << "<BB#" << getMBB()->getNumber() << ">";
     break;
   case MachineOperand::MO_FrameIndex:
     OS << "<fi#" << getIndex() << '>';
@@ -277,10 +275,8 @@
     OS << '>';
     break;
   case MachineOperand::MO_BlockAddress:
-    OS << "<blockaddress: ";
-    WriteAsOperand(OS, getBlockAddress()->getFunction(), /*PrintType=*/false);
-    OS << ", ";
-    WriteAsOperand(OS, getBlockAddress()->getBasicBlock(), /*PrintType=*/false);
+    OS << "<";
+    WriteAsOperand(OS, getBlockAddress(), /*PrintType=*/false);
     OS << '>';
     break;
   default:
@@ -1064,16 +1060,24 @@
 }
 
 void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const {
-  // Specialize printing if op#0 is definition
-  unsigned StartOp = 0;
-  if (getNumOperands() && getOperand(0).isReg() && getOperand(0).isDef()) {
-    getOperand(0).print(OS, TM);
-    OS << " = ";
-    ++StartOp;   // Don't print this operand again!
+  unsigned StartOp = 0, e = getNumOperands();
+
+  // Print explicitly defined operands on the left of an assignment syntax.
+  for (; StartOp < e && getOperand(StartOp).isReg() &&
+         getOperand(StartOp).isDef() &&
+         !getOperand(StartOp).isImplicit();
+       ++StartOp) {
+    if (StartOp != 0) OS << ", ";
+    getOperand(StartOp).print(OS, TM);
   }
 
+  if (StartOp != 0)
+    OS << " = ";
+
+  // Print the opcode name.
   OS << getDesc().getName();
 
+  // Print the rest of the operands.
   for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) {
     if (i != StartOp)
       OS << ",";
@@ -1081,8 +1085,11 @@
     getOperand(i).print(OS, TM);
   }
 
+  bool HaveSemi = false;
   if (!memoperands_empty()) {
-    OS << ", Mem:";
+    if (!HaveSemi) OS << ";"; HaveSemi = true;
+
+    OS << " mem:";
     for (mmo_iterator i = memoperands_begin(), e = memoperands_end();
          i != e; ++i) {
       OS << **i;
@@ -1092,14 +1099,16 @@
   }
 
   if (!debugLoc.isUnknown()) {
+    if (!HaveSemi) OS << ";"; HaveSemi = true;
+
+    // TODO: print InlinedAtLoc information
+
     const MachineFunction *MF = getParent()->getParent();
     DebugLocTuple DLT = MF->getDebugLocTuple(debugLoc);
     DICompileUnit CU(DLT.Scope);
     if (!CU.isNull())
-      OS << " [dbg: "
-         << CU.getDirectory() << '/' << CU.getFilename() << ","
-         << DLT.Line << ","
-         << DLT.Col  << "]";
+      OS << " dbg:" << CU.getDirectory() << '/' << CU.getFilename() << ":"
+         << DLT.Line << ":" << DLT.Col;
   }
 
   OS << "\n";
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp
index 45981d7..99812e0 100644
--- a/lib/CodeGen/MachineVerifier.cpp
+++ b/lib/CodeGen/MachineVerifier.cpp
@@ -243,7 +243,7 @@
   report(msg, MBB->getParent());
   *OS << "- basic block: " << MBB->getBasicBlock()->getNameStr()
       << " " << (void*)MBB
-      << " (#" << MBB->getNumber() << ")\n";
+      << " (BB#" << MBB->getNumber() << ")\n";
 }
 
 void MachineVerifier::report(const char *msg, const MachineInstr *MI) {
@@ -745,7 +745,7 @@
            PrE = MBB->pred_end(); PrI != PrE; ++PrI) {
       if (!seen.count(*PrI)) {
         report("Missing PHI operand", BBI);
-        *OS << "MBB #" << (*PrI)->getNumber()
+        *OS << "BB#" << (*PrI)->getNumber()
             << " is a predecessor according to the CFG.\n";
       }
     }
@@ -780,7 +780,7 @@
             report("Live-in physical register is not live-out from predecessor",
                    MFI);
             *OS << "Register " << TRI->getName(*I)
-                << " is not live-out from MBB #" << (*PrI)->getNumber()
+                << " is not live-out from BB#" << (*PrI)->getNumber()
                 << ".\n";
           }
         }
diff --git a/lib/CodeGen/PostRASchedulerList.cpp b/lib/CodeGen/PostRASchedulerList.cpp
index 96146e9..7e85c48 100644
--- a/lib/CodeGen/PostRASchedulerList.cpp
+++ b/lib/CodeGen/PostRASchedulerList.cpp
@@ -258,7 +258,7 @@
       if (bbcnt++ % DebugDiv != DebugMod)
         continue;
       errs() << "*** DEBUG scheduling " << Fn.getFunction()->getNameStr() <<
-        ":MBB ID#" << MBB->getNumber() << " ***\n";
+        ":BB#" << MBB->getNumber() << " ***\n";
     }
 #endif
 
@@ -453,7 +453,7 @@
 /// incorrect by instruction reordering.
 ///
 void SchedulePostRATDList::FixupKills(MachineBasicBlock *MBB) {
-  DEBUG(errs() << "Fixup kills for BB ID#" << MBB->getNumber() << '\n');
+  DEBUG(errs() << "Fixup kills for BB#" << MBB->getNumber() << '\n');
 
   std::set<unsigned> killedRegs;
   BitVector ReservedRegs = TRI->getReservedRegs(MF);
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 0af0746..98e7317 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5754,9 +5754,9 @@
   } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
     if (G && R->getReg() &&
         TargetRegisterInfo::isPhysicalRegister(R->getReg())) {
-      OS << " " << G->getTarget().getRegisterInfo()->getName(R->getReg());
+      OS << " %" << G->getTarget().getRegisterInfo()->getName(R->getReg());
     } else {
-      OS << " #" << R->getReg();
+      OS << " %reg" << R->getReg();
     }
   } else if (const ExternalSymbolSDNode *ES =
              dyn_cast<ExternalSymbolSDNode>(this)) {