diff --git a/lib/Analysis/AliasAnalysisCounter.cpp b/lib/Analysis/AliasAnalysisCounter.cpp
index 272c871..0c271bf 100644
--- a/lib/Analysis/AliasAnalysisCounter.cpp
+++ b/lib/Analysis/AliasAnalysisCounter.cpp
@@ -28,8 +28,7 @@
 PrintAllFailures("count-aa-print-all-failed-queries", cl::ReallyHidden);
 
 namespace {
-  class VISIBILITY_HIDDEN AliasAnalysisCounter 
-      : public ModulePass, public AliasAnalysis {
+  class AliasAnalysisCounter : public ModulePass, public AliasAnalysis {
     unsigned No, May, Must;
     unsigned NoMR, JustRef, JustMod, MR;
     const char *Name;
diff --git a/lib/Analysis/AliasAnalysisEvaluator.cpp b/lib/Analysis/AliasAnalysisEvaluator.cpp
index bb95c01..4b97f3d 100644
--- a/lib/Analysis/AliasAnalysisEvaluator.cpp
+++ b/lib/Analysis/AliasAnalysisEvaluator.cpp
@@ -45,7 +45,7 @@
 static cl::opt<bool> PrintModRef("print-modref", cl::ReallyHidden);
 
 namespace {
-  class VISIBILITY_HIDDEN AAEval : public FunctionPass {
+  class AAEval : public FunctionPass {
     unsigned NoAlias, MayAlias, MustAlias;
     unsigned NoModRef, Mod, Ref, ModRef;
 
diff --git a/lib/Analysis/AliasDebugger.cpp b/lib/Analysis/AliasDebugger.cpp
index 1e82621..a507842 100644
--- a/lib/Analysis/AliasDebugger.cpp
+++ b/lib/Analysis/AliasDebugger.cpp
@@ -29,8 +29,7 @@
 
 namespace {
   
-  class VISIBILITY_HIDDEN AliasDebugger 
-      : public ModulePass, public AliasAnalysis {
+  class AliasDebugger : public ModulePass, public AliasAnalysis {
 
     //What we do is simple.  Keep track of every value the AA could
     //know about, and verify that queries are one of those.
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index b056d00..250396a 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -599,7 +599,7 @@
 //===----------------------------------------------------------------------===//
 
 namespace {
-  class VISIBILITY_HIDDEN AliasSetPrinter : public FunctionPass {
+  class AliasSetPrinter : public FunctionPass {
     AliasSetTracker *Tracker;
   public:
     static char ID; // Pass identification, replacement for typeid
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index fa33a2a..f09d9b5 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -139,7 +139,7 @@
   /// implementations, in that it does not chain to a previous analysis.  As
   /// such it doesn't follow many of the rules that other alias analyses must.
   ///
-  struct VISIBILITY_HIDDEN NoAA : public ImmutablePass, public AliasAnalysis {
+  struct NoAA : public ImmutablePass, public AliasAnalysis {
     static char ID; // Class identification, replacement for typeinfo
     NoAA() : ImmutablePass(&ID) {}
     explicit NoAA(void *PID) : ImmutablePass(PID) { }
@@ -194,7 +194,7 @@
   /// BasicAliasAnalysis - This is the default alias analysis implementation.
   /// Because it doesn't chain to a previous alias analysis (like -no-aa), it
   /// derives from the NoAA class.
-  struct VISIBILITY_HIDDEN BasicAliasAnalysis : public NoAA {
+  struct BasicAliasAnalysis : public NoAA {
     static char ID; // Class identification, replacement for typeinfo
     BasicAliasAnalysis() : NoAA(&ID) {}
     AliasResult alias(const Value *V1, unsigned V1Size,
diff --git a/lib/Analysis/CFGPrinter.cpp b/lib/Analysis/CFGPrinter.cpp
index 08f070c9..6779996 100644
--- a/lib/Analysis/CFGPrinter.cpp
+++ b/lib/Analysis/CFGPrinter.cpp
@@ -24,7 +24,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN CFGViewer : public FunctionPass {
+  struct CFGViewer : public FunctionPass {
     static char ID; // Pass identifcation, replacement for typeid
     CFGViewer() : FunctionPass(&ID) {}
 
@@ -46,7 +46,7 @@
 V0("view-cfg", "View CFG of function", false, true);
 
 namespace {
-  struct VISIBILITY_HIDDEN CFGOnlyViewer : public FunctionPass {
+  struct CFGOnlyViewer : public FunctionPass {
     static char ID; // Pass identifcation, replacement for typeid
     CFGOnlyViewer() : FunctionPass(&ID) {}
 
@@ -69,7 +69,7 @@
    "View CFG of function (with no function bodies)", false, true);
 
 namespace {
-  struct VISIBILITY_HIDDEN CFGPrinter : public FunctionPass {
+  struct CFGPrinter : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     CFGPrinter() : FunctionPass(&ID) {}
     explicit CFGPrinter(void *pid) : FunctionPass(pid) {}
@@ -102,7 +102,7 @@
 P1("dot-cfg", "Print CFG of function to 'dot' file", false, true);
 
 namespace {
-  struct VISIBILITY_HIDDEN CFGOnlyPrinter : public FunctionPass {
+  struct CFGOnlyPrinter : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     CFGOnlyPrinter() : FunctionPass(&ID) {}
     explicit CFGOnlyPrinter(void *pid) : FunctionPass(pid) {}
diff --git a/lib/Analysis/DbgInfoPrinter.cpp b/lib/Analysis/DbgInfoPrinter.cpp
index 2bbe2e0..ab92e3f 100644
--- a/lib/Analysis/DbgInfoPrinter.cpp
+++ b/lib/Analysis/DbgInfoPrinter.cpp
@@ -35,7 +35,7 @@
                cl::Hidden);
 
 namespace {
-  class VISIBILITY_HIDDEN PrintDbgInfo : public FunctionPass {
+  class PrintDbgInfo : public FunctionPass {
     raw_ostream &Out;
     void printStopPoint(const DbgStopPointInst *DSI);
     void printFuncStart(const DbgFuncStartInst *FS);
diff --git a/lib/Analysis/IPA/Andersens.cpp b/lib/Analysis/IPA/Andersens.cpp
index e37a9db..b2ba4dd 100644
--- a/lib/Analysis/IPA/Andersens.cpp
+++ b/lib/Analysis/IPA/Andersens.cpp
@@ -126,8 +126,8 @@
     static bool isPod() { return true; }
   };
 
-  class VISIBILITY_HIDDEN Andersens : public ModulePass, public AliasAnalysis,
-                                      private InstVisitor<Andersens> {
+  class Andersens : public ModulePass, public AliasAnalysis,
+                    private InstVisitor<Andersens> {
     struct Node;
 
     /// Constraint - Objects of this structure are used to represent the various
diff --git a/lib/Analysis/IPA/CallGraph.cpp b/lib/Analysis/IPA/CallGraph.cpp
index e2b288d..875cb48 100644
--- a/lib/Analysis/IPA/CallGraph.cpp
+++ b/lib/Analysis/IPA/CallGraph.cpp
@@ -26,7 +26,7 @@
 //===----------------------------------------------------------------------===//
 // BasicCallGraph class definition
 //
-class VISIBILITY_HIDDEN BasicCallGraph : public CallGraph, public ModulePass {
+class BasicCallGraph : public CallGraph, public ModulePass {
   // Root is root of the call graph, or the external node if a 'main' function
   // couldn't be found.
   //
diff --git a/lib/Analysis/IPA/GlobalsModRef.cpp b/lib/Analysis/IPA/GlobalsModRef.cpp
index d83ea48..9403c86 100644
--- a/lib/Analysis/IPA/GlobalsModRef.cpp
+++ b/lib/Analysis/IPA/GlobalsModRef.cpp
@@ -44,7 +44,7 @@
   /// function in the program.  Later, the entries for these functions are
   /// removed if the function is found to call an external function (in which
   /// case we know nothing about it.
-  struct VISIBILITY_HIDDEN FunctionRecord {
+  struct FunctionRecord {
     /// GlobalInfo - Maintain mod/ref info for all of the globals without
     /// addresses taken that are read or written (transitively) by this
     /// function.
@@ -69,8 +69,7 @@
   };
 
   /// GlobalsModRef - The actual analysis pass.
-  class VISIBILITY_HIDDEN GlobalsModRef
-      : public ModulePass, public AliasAnalysis {
+  class GlobalsModRef : public ModulePass, public AliasAnalysis {
     /// NonAddressTakenGlobals - The globals that do not have their addresses
     /// taken.
     std::set<GlobalValue*> NonAddressTakenGlobals;
diff --git a/lib/Analysis/InstCount.cpp b/lib/Analysis/InstCount.cpp
index 4cde793..79a519e 100644
--- a/lib/Analysis/InstCount.cpp
+++ b/lib/Analysis/InstCount.cpp
@@ -34,8 +34,7 @@
 
 
 namespace {
-  class VISIBILITY_HIDDEN InstCount 
-      : public FunctionPass, public InstVisitor<InstCount> {
+  class InstCount : public FunctionPass, public InstVisitor<InstCount> {
     friend class InstVisitor<InstCount>;
 
     void visitFunction  (Function &F) { ++TotalFuncs; }
diff --git a/lib/Analysis/ProfileEstimatorPass.cpp b/lib/Analysis/ProfileEstimatorPass.cpp
index c585c1d..e767891 100644
--- a/lib/Analysis/ProfileEstimatorPass.cpp
+++ b/lib/Analysis/ProfileEstimatorPass.cpp
@@ -30,8 +30,7 @@
 );
 
 namespace {
-  class VISIBILITY_HIDDEN ProfileEstimatorPass :
-      public FunctionPass, public ProfileInfo {
+  class ProfileEstimatorPass : public FunctionPass, public ProfileInfo {
     double ExecCount;
     LoopInfo *LI;
     std::set<BasicBlock*>  BBToVisit;
diff --git a/lib/Analysis/ProfileInfo.cpp b/lib/Analysis/ProfileInfo.cpp
index 9efdd23..faa56fc 100644
--- a/lib/Analysis/ProfileInfo.cpp
+++ b/lib/Analysis/ProfileInfo.cpp
@@ -178,8 +178,7 @@
 //
 
 namespace {
-  struct VISIBILITY_HIDDEN NoProfileInfo 
-    : public ImmutablePass, public ProfileInfo {
+  struct NoProfileInfo : public ImmutablePass, public ProfileInfo {
     static char ID; // Class identification, replacement for typeinfo
     NoProfileInfo() : ImmutablePass(&ID) {}
   };
diff --git a/lib/Analysis/ProfileInfoLoaderPass.cpp b/lib/Analysis/ProfileInfoLoaderPass.cpp
index 89d90bc..50321ce 100644
--- a/lib/Analysis/ProfileInfoLoaderPass.cpp
+++ b/lib/Analysis/ProfileInfoLoaderPass.cpp
@@ -38,7 +38,7 @@
                     cl::desc("Profile file loaded by -profile-loader"));
 
 namespace {
-  class VISIBILITY_HIDDEN LoaderPass : public ModulePass, public ProfileInfo {
+  class LoaderPass : public ModulePass, public ProfileInfo {
     std::string Filename;
     std::set<Edge> SpanningTree;
     std::set<const BasicBlock*> BBisUnvisited;
diff --git a/lib/Analysis/ProfileVerifierPass.cpp b/lib/Analysis/ProfileVerifierPass.cpp
index 9766da5..60b1d14 100644
--- a/lib/Analysis/ProfileVerifierPass.cpp
+++ b/lib/Analysis/ProfileVerifierPass.cpp
@@ -30,7 +30,7 @@
      cl::desc("Disable assertions"));
 
 namespace {
-  class VISIBILITY_HIDDEN ProfileVerifierPass : public FunctionPass {
+  class ProfileVerifierPass : public FunctionPass {
 
     struct DetailedBlockInfo {
       const BasicBlock *BB;
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 62f3aa1..40e184e 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -401,7 +401,7 @@
   /// SCEVComplexityCompare - Return true if the complexity of the LHS is less
   /// than the complexity of the RHS.  This comparator is used to canonicalize
   /// expressions.
-  class VISIBILITY_HIDDEN SCEVComplexityCompare {
+  class SCEVComplexityCompare {
     LoopInfo *LI;
   public:
     explicit SCEVComplexityCompare(LoopInfo *li) : LI(li) {}
diff --git a/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp b/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
index cc79e6c..204d193 100644
--- a/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
+++ b/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
@@ -25,8 +25,8 @@
 namespace {
   /// ScalarEvolutionAliasAnalysis - This is a simple alias analysis
   /// implementation that uses ScalarEvolution to answer queries.
-  class VISIBILITY_HIDDEN ScalarEvolutionAliasAnalysis : public FunctionPass,
-                                                         public AliasAnalysis {
+  class ScalarEvolutionAliasAnalysis : public FunctionPass,
+                                       public AliasAnalysis {
     ScalarEvolution *SE;
 
   public:
diff --git a/lib/CodeGen/AsmPrinter/OcamlGCPrinter.cpp b/lib/CodeGen/AsmPrinter/OcamlGCPrinter.cpp
index 06b92b7..9dd18c2 100644
--- a/lib/CodeGen/AsmPrinter/OcamlGCPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/OcamlGCPrinter.cpp
@@ -27,7 +27,7 @@
 
 namespace {
 
-  class VISIBILITY_HIDDEN OcamlGCMetadataPrinter : public GCMetadataPrinter {
+  class OcamlGCMetadataPrinter : public GCMetadataPrinter {
   public:
     void beginAssembly(raw_ostream &OS, AsmPrinter &AP,
                        const MCAsmInfo &MAI);
diff --git a/lib/CodeGen/DeadMachineInstructionElim.cpp b/lib/CodeGen/DeadMachineInstructionElim.cpp
index 078ed3d..b35df19 100644
--- a/lib/CodeGen/DeadMachineInstructionElim.cpp
+++ b/lib/CodeGen/DeadMachineInstructionElim.cpp
@@ -23,8 +23,7 @@
 using namespace llvm;
 
 namespace {
-  class VISIBILITY_HIDDEN DeadMachineInstructionElim : 
-        public MachineFunctionPass {
+  class DeadMachineInstructionElim : public MachineFunctionPass {
     virtual bool runOnMachineFunction(MachineFunction &MF);
     
     const TargetRegisterInfo *TRI;
diff --git a/lib/CodeGen/DwarfEHPrepare.cpp b/lib/CodeGen/DwarfEHPrepare.cpp
index 72b3f92..ab6b92c 100644
--- a/lib/CodeGen/DwarfEHPrepare.cpp
+++ b/lib/CodeGen/DwarfEHPrepare.cpp
@@ -33,7 +33,7 @@
 STATISTIC(NumStackTempsIntroduced, "Number of stack temporaries introduced");
 
 namespace {
-  class VISIBILITY_HIDDEN DwarfEHPrepare : public FunctionPass {
+  class DwarfEHPrepare : public FunctionPass {
     const TargetLowering *TLI;
     bool CompileFast;
 
diff --git a/lib/CodeGen/GCMetadata.cpp b/lib/CodeGen/GCMetadata.cpp
index a57296c..e4ba91a 100644
--- a/lib/CodeGen/GCMetadata.cpp
+++ b/lib/CodeGen/GCMetadata.cpp
@@ -24,7 +24,7 @@
 
 namespace {
   
-  class VISIBILITY_HIDDEN Printer : public FunctionPass {
+  class Printer : public FunctionPass {
     static char ID;
     raw_ostream &OS;
     
@@ -39,7 +39,7 @@
     bool runOnFunction(Function &F);
   };
   
-  class VISIBILITY_HIDDEN Deleter : public FunctionPass {
+  class Deleter : public FunctionPass {
     static char ID;
     
   public:
diff --git a/lib/CodeGen/GCStrategy.cpp b/lib/CodeGen/GCStrategy.cpp
index 6d0de41..aa5c0a1 100644
--- a/lib/CodeGen/GCStrategy.cpp
+++ b/lib/CodeGen/GCStrategy.cpp
@@ -39,7 +39,7 @@
   /// llvm.gcwrite intrinsics, replacing them with simple loads and stores as 
   /// directed by the GCStrategy. It also performs automatic root initialization
   /// and custom intrinsic lowering.
-  class VISIBILITY_HIDDEN LowerIntrinsics : public FunctionPass {
+  class LowerIntrinsics : public FunctionPass {
     static bool NeedsDefaultLoweringPass(const GCStrategy &C);
     static bool NeedsCustomLoweringPass(const GCStrategy &C);
     static bool CouldBecomeSafePoint(Instruction *I);
@@ -63,7 +63,7 @@
   /// function representation to identify safe points for the garbage collector
   /// in the machine code. It inserts labels at safe points and populates a
   /// GCMetadata record for each function.
-  class VISIBILITY_HIDDEN MachineCodeAnalysis : public MachineFunctionPass {
+  class MachineCodeAnalysis : public MachineFunctionPass {
     const TargetMachine *TM;
     GCFunctionInfo *FI;
     MachineModuleInfo *MMI;
diff --git a/lib/CodeGen/IfConversion.cpp b/lib/CodeGen/IfConversion.cpp
index 7b613ff..45f08b1 100644
--- a/lib/CodeGen/IfConversion.cpp
+++ b/lib/CodeGen/IfConversion.cpp
@@ -59,7 +59,7 @@
 STATISTIC(NumDupBBs,       "Number of duplicated blocks");
 
 namespace {
-  class VISIBILITY_HIDDEN IfConverter : public MachineFunctionPass {
+  class IfConverter : public MachineFunctionPass {
     enum IfcvtKind {
       ICNotClassfied,  // BB data valid, but not classified.
       ICSimpleFalse,   // Same as ICSimple, but on the false path.
diff --git a/lib/CodeGen/LowerSubregs.cpp b/lib/CodeGen/LowerSubregs.cpp
index 8a0785d..a07b15a 100644
--- a/lib/CodeGen/LowerSubregs.cpp
+++ b/lib/CodeGen/LowerSubregs.cpp
@@ -30,8 +30,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN LowerSubregsInstructionPass
-   : public MachineFunctionPass {
+  struct LowerSubregsInstructionPass : public MachineFunctionPass {
     static char ID; // Pass identification, replacement for typeid
     LowerSubregsInstructionPass() : MachineFunctionPass(&ID) {}
     
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index b0ec809..2fa0764 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -36,7 +36,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass {
+  struct Printer : public MachineFunctionPass {
     static char ID;
 
     raw_ostream &OS;
diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp
index f92ddb2..9540389 100644
--- a/lib/CodeGen/MachineLICM.cpp
+++ b/lib/CodeGen/MachineLICM.cpp
@@ -41,7 +41,7 @@
 STATISTIC(NumCSEed,   "Number of hoisted machine instructions CSEed");
 
 namespace {
-  class VISIBILITY_HIDDEN MachineLICM : public MachineFunctionPass {
+  class MachineLICM : public MachineFunctionPass {
     const TargetMachine   *TM;
     const TargetInstrInfo *TII;
     const TargetRegisterInfo *TRI;
diff --git a/lib/CodeGen/MachineSink.cpp b/lib/CodeGen/MachineSink.cpp
index a00bebb..70d471f 100644
--- a/lib/CodeGen/MachineSink.cpp
+++ b/lib/CodeGen/MachineSink.cpp
@@ -33,7 +33,7 @@
 STATISTIC(NumSunk, "Number of machine instructions sunk");
 
 namespace {
-  class VISIBILITY_HIDDEN MachineSinking : public MachineFunctionPass {
+  class MachineSinking : public MachineFunctionPass {
     const TargetInstrInfo *TII;
     const TargetRegisterInfo *TRI;
     MachineRegisterInfo  *RegInfo; // Machine register information
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp
index 18a3ead..ab1933a 100644
--- a/lib/CodeGen/MachineVerifier.cpp
+++ b/lib/CodeGen/MachineVerifier.cpp
@@ -43,7 +43,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN MachineVerifier : public MachineFunctionPass {
+  struct MachineVerifier : public MachineFunctionPass {
     static char ID; // Pass ID, replacement for typeid
 
     MachineVerifier(bool allowDoubleDefs = false) :
diff --git a/lib/CodeGen/OcamlGC.cpp b/lib/CodeGen/OcamlGC.cpp
index f7bc9f3..6ee5217 100644
--- a/lib/CodeGen/OcamlGC.cpp
+++ b/lib/CodeGen/OcamlGC.cpp
@@ -21,7 +21,7 @@
 using namespace llvm;
 
 namespace {
-  class VISIBILITY_HIDDEN OcamlGC : public GCStrategy {
+  class OcamlGC : public GCStrategy {
   public:
     OcamlGC();
   };
diff --git a/lib/CodeGen/PostRASchedulerList.cpp b/lib/CodeGen/PostRASchedulerList.cpp
index 8fdbe9b..905f693 100644
--- a/lib/CodeGen/PostRASchedulerList.cpp
+++ b/lib/CodeGen/PostRASchedulerList.cpp
@@ -76,7 +76,7 @@
                       cl::init(0), cl::Hidden);
 
 namespace {
-  class VISIBILITY_HIDDEN PostRAScheduler : public MachineFunctionPass {
+  class PostRAScheduler : public MachineFunctionPass {
     AliasAnalysis *AA;
     CodeGenOpt::Level OptLevel;
 
@@ -103,7 +103,7 @@
   };
   char PostRAScheduler::ID = 0;
 
-  class VISIBILITY_HIDDEN SchedulePostRATDList : public ScheduleDAGInstrs {
+  class SchedulePostRATDList : public ScheduleDAGInstrs {
     /// AvailableQueue - The priority queue to use for the available SUnits.
     ///
     LatencyPriorityQueue AvailableQueue;
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp
index 726869a..b2a7312 100644
--- a/lib/CodeGen/PreAllocSplitting.cpp
+++ b/lib/CodeGen/PreAllocSplitting.cpp
@@ -50,7 +50,7 @@
 STATISTIC(NumDeadSpills, "Number of dead spills removed");
 
 namespace {
-  class VISIBILITY_HIDDEN PreAllocSplitting : public MachineFunctionPass {
+  class PreAllocSplitting : public MachineFunctionPass {
     MachineFunction       *CurrMF;
     const TargetMachine   *TM;
     const TargetInstrInfo *TII;
diff --git a/lib/CodeGen/PseudoSourceValue.cpp b/lib/CodeGen/PseudoSourceValue.cpp
index 70e8640..19b3cf5 100644
--- a/lib/CodeGen/PseudoSourceValue.cpp
+++ b/lib/CodeGen/PseudoSourceValue.cpp
@@ -55,8 +55,7 @@
   /// FixedStackPseudoSourceValue - A specialized PseudoSourceValue
   /// for holding FixedStack values, which must include a frame
   /// index.
-  class VISIBILITY_HIDDEN FixedStackPseudoSourceValue
-    : public PseudoSourceValue {
+  class FixedStackPseudoSourceValue : public PseudoSourceValue {
     const int FI;
   public:
     explicit FixedStackPseudoSourceValue(int fi) : FI(fi) {}
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp
index 5d58ea9..40a73bb 100644
--- a/lib/CodeGen/RegAllocLinearScan.cpp
+++ b/lib/CodeGen/RegAllocLinearScan.cpp
@@ -70,7 +70,7 @@
                    createLinearScanRegisterAllocator);
 
 namespace {
-  struct VISIBILITY_HIDDEN RALinScan : public MachineFunctionPass {
+  struct RALinScan : public MachineFunctionPass {
     static char ID;
     RALinScan() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index 28ede55..efda552 100644
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -44,7 +44,7 @@
                 createLocalRegisterAllocator);
 
 namespace {
-  class VISIBILITY_HIDDEN RALocal : public MachineFunctionPass {
+  class RALocal : public MachineFunctionPass {
   public:
     static char ID;
     RALocal() : MachineFunctionPass(&ID), StackSlotForVirtReg(-1) {}
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index bee5d93..a6e33fa 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -70,7 +70,7 @@
   /// PBQP based allocators solve the register allocation problem by mapping
   /// register allocation problems to Partitioned Boolean Quadratic
   /// Programming problems.
-  class VISIBILITY_HIDDEN PBQPRegAlloc : public MachineFunctionPass {
+  class PBQPRegAlloc : public MachineFunctionPass {
   public:
 
     static char ID;
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index e3f8f0f..05b1cdd 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -57,7 +57,7 @@
 
 //------------------------------ DAGCombiner ---------------------------------//
 
-  class VISIBILITY_HIDDEN DAGCombiner {
+  class DAGCombiner {
     SelectionDAG &DAG;
     const TargetLowering &TLI;
     CombineLevel Level;
@@ -280,8 +280,7 @@
 namespace {
 /// WorkListRemover - This class is a DAGUpdateListener that removes any deleted
 /// nodes from the worklist.
-class VISIBILITY_HIDDEN WorkListRemover :
-  public SelectionDAG::DAGUpdateListener {
+class WorkListRemover : public SelectionDAG::DAGUpdateListener {
   DAGCombiner &DC;
 public:
   explicit WorkListRemover(DAGCombiner &dc) : DC(dc) {}
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 7138dd2..4d3cba9 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -55,7 +55,7 @@
 /// will attempt merge setcc and brc instructions into brcc's.
 ///
 namespace {
-class VISIBILITY_HIDDEN SelectionDAGLegalize {
+class SelectionDAGLegalize {
   TargetLowering &TLI;
   SelectionDAG &DAG;
   CodeGenOpt::Level OptLevel;
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
index 5992f5d..c4bd552 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
@@ -623,8 +623,7 @@
 namespace {
   /// NodeUpdateListener - This class is a DAGUpdateListener that listens for
   /// updates to nodes and recomputes their ready state.
-  class VISIBILITY_HIDDEN NodeUpdateListener :
-    public SelectionDAG::DAGUpdateListener {
+  class NodeUpdateListener : public SelectionDAG::DAGUpdateListener {
     DAGTypeLegalizer &DTL;
     SmallSetVector<SDNode*, 16> &NodesToAnalyze;
   public:
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
index e0f93d8..701421d 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
@@ -40,7 +40,7 @@
   /// FastPriorityQueue - A degenerate priority queue that considers
   /// all nodes to have the same priority.
   ///
-  struct VISIBILITY_HIDDEN FastPriorityQueue {
+  struct FastPriorityQueue {
     SmallVector<SUnit *, 16> Queue;
 
     bool empty() const { return Queue.empty(); }
@@ -60,7 +60,7 @@
 //===----------------------------------------------------------------------===//
 /// ScheduleDAGFast - The actual "fast" list scheduler implementation.
 ///
-class VISIBILITY_HIDDEN ScheduleDAGFast : public ScheduleDAGSDNodes {
+class ScheduleDAGFast : public ScheduleDAGSDNodes {
 private:
   /// AvailableQueue - The priority queue to use for the available SUnits.
   FastPriorityQueue AvailableQueue;
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
index c8d2158..3a11170 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
@@ -48,7 +48,7 @@
 /// ScheduleDAGList - The actual list scheduler implementation.  This supports
 /// top-down scheduling.
 ///
-class VISIBILITY_HIDDEN ScheduleDAGList : public ScheduleDAGSDNodes {
+class ScheduleDAGList : public ScheduleDAGSDNodes {
 private:
   /// AvailableQueue - The priority queue to use for the available SUnits.
   ///
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index cec24e6..b46ed96 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -53,7 +53,7 @@
 /// ScheduleDAGRRList - The actual register reduction list scheduler
 /// implementation.  This supports both top-down and bottom-up scheduling.
 ///
-class VISIBILITY_HIDDEN ScheduleDAGRRList : public ScheduleDAGSDNodes {
+class ScheduleDAGRRList : public ScheduleDAGSDNodes {
 private:
   /// isBottomUp - This is true if the scheduling problem is bottom-up, false if
   /// it is top-down.
@@ -965,8 +965,7 @@
 
 namespace {
   template<class SF>
-  class VISIBILITY_HIDDEN RegReductionPriorityQueue
-   : public SchedulingPriorityQueue {
+  class RegReductionPriorityQueue : public SchedulingPriorityQueue {
     PriorityQueue<SUnit*, std::vector<SUnit*>, SF> Queue;
     unsigned currentQueueId;
 
diff --git a/lib/CodeGen/ShadowStackGC.cpp b/lib/CodeGen/ShadowStackGC.cpp
index 25a499b..26da05f 100644
--- a/lib/CodeGen/ShadowStackGC.cpp
+++ b/lib/CodeGen/ShadowStackGC.cpp
@@ -38,7 +38,7 @@
 
 namespace {
 
-  class VISIBILITY_HIDDEN ShadowStackGC : public GCStrategy {
+  class ShadowStackGC : public GCStrategy {
     /// RootChain - This is the global linked-list that contains the chain of GC
     /// roots.
     GlobalVariable *Head;
@@ -84,7 +84,7 @@
   ///
   /// It's wrapped up in a state machine using the same transform C# uses for
   /// 'yield return' enumerators, This transform allows it to be non-allocating.
-  class VISIBILITY_HIDDEN EscapeEnumerator {
+  class EscapeEnumerator {
     Function &F;
     const char *CleanupBBName;
 
diff --git a/lib/CodeGen/SjLjEHPrepare.cpp b/lib/CodeGen/SjLjEHPrepare.cpp
index e987fa2..39b82fe 100644
--- a/lib/CodeGen/SjLjEHPrepare.cpp
+++ b/lib/CodeGen/SjLjEHPrepare.cpp
@@ -38,7 +38,7 @@
 STATISTIC(NumSpilled, "Number of registers live across unwind edges");
 
 namespace {
-  class VISIBILITY_HIDDEN SjLjEHPass : public FunctionPass {
+  class SjLjEHPass : public FunctionPass {
 
     const TargetLowering *TLI;
 
diff --git a/lib/CodeGen/StackProtector.cpp b/lib/CodeGen/StackProtector.cpp
index 0204969..e8ee822 100644
--- a/lib/CodeGen/StackProtector.cpp
+++ b/lib/CodeGen/StackProtector.cpp
@@ -37,7 +37,7 @@
                        "stack protection"));
 
 namespace {
-  class VISIBILITY_HIDDEN StackProtector : public FunctionPass {
+  class StackProtector : public FunctionPass {
     /// TLI - Keep a pointer of a TargetLowering to consult for determining
     /// target type sizes.
     const TargetLowering *TLI;
diff --git a/lib/CodeGen/StackSlotColoring.cpp b/lib/CodeGen/StackSlotColoring.cpp
index fad0808..56658a8 100644
--- a/lib/CodeGen/StackSlotColoring.cpp
+++ b/lib/CodeGen/StackSlotColoring.cpp
@@ -53,7 +53,7 @@
 STATISTIC(NumDead,       "Number of trivially dead stack accesses eliminated");
 
 namespace {
-  class VISIBILITY_HIDDEN StackSlotColoring : public MachineFunctionPass {
+  class StackSlotColoring : public MachineFunctionPass {
     bool ColorWithRegs;
     LiveStacks* LS;
     VirtRegMap* VRM;
diff --git a/lib/CodeGen/StrongPHIElimination.cpp b/lib/CodeGen/StrongPHIElimination.cpp
index 48d6dc1..f6ec0a2 100644
--- a/lib/CodeGen/StrongPHIElimination.cpp
+++ b/lib/CodeGen/StrongPHIElimination.cpp
@@ -37,7 +37,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN StrongPHIElimination : public MachineFunctionPass {
+  struct StrongPHIElimination : public MachineFunctionPass {
     static char ID; // Pass identification, replacement for typeid
     StrongPHIElimination() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index a5a0f5b..791fb66 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -57,8 +57,7 @@
 STATISTIC(NumDeletes,          "Number of dead instructions deleted");
 
 namespace {
-  class VISIBILITY_HIDDEN TwoAddressInstructionPass
-    : public MachineFunctionPass {
+  class TwoAddressInstructionPass : public MachineFunctionPass {
     const TargetInstrInfo *TII;
     const TargetRegisterInfo *TRI;
     MachineRegisterInfo *MRI;
diff --git a/lib/CodeGen/UnreachableBlockElim.cpp b/lib/CodeGen/UnreachableBlockElim.cpp
index e7c3412..41d07ae 100644
--- a/lib/CodeGen/UnreachableBlockElim.cpp
+++ b/lib/CodeGen/UnreachableBlockElim.cpp
@@ -40,7 +40,7 @@
 using namespace llvm;
 
 namespace {
-  class VISIBILITY_HIDDEN UnreachableBlockElim : public FunctionPass {
+  class UnreachableBlockElim : public FunctionPass {
     virtual bool runOnFunction(Function &F);
   public:
     static char ID; // Pass identification, replacement for typeid
@@ -95,8 +95,7 @@
 
 
 namespace {
-  class VISIBILITY_HIDDEN UnreachableMachineBlockElim :
-        public MachineFunctionPass {
+  class UnreachableMachineBlockElim : public MachineFunctionPass {
     virtual bool runOnMachineFunction(MachineFunction &F);
     virtual void getAnalysisUsage(AnalysisUsage &AU) const;
     MachineModuleInfo *MMI;
diff --git a/lib/CodeGen/VirtRegRewriter.cpp b/lib/CodeGen/VirtRegRewriter.cpp
index 401bcb6..5a0186d 100644
--- a/lib/CodeGen/VirtRegRewriter.cpp
+++ b/lib/CodeGen/VirtRegRewriter.cpp
@@ -66,7 +66,7 @@
 /// This class is intended for use with the new spilling framework only. It
 /// rewrites vreg def/uses to use the assigned preg, but does not insert any
 /// spill code.
-struct VISIBILITY_HIDDEN TrivialRewriter : public VirtRegRewriter {
+struct TrivialRewriter : public VirtRegRewriter {
 
   bool runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM,
                             LiveIntervals* LIs) {
@@ -125,7 +125,7 @@
 /// on a per-stack-slot / remat id basis as the low bit in the value of the
 /// SpillSlotsAvailable entries.  The predicate 'canClobberPhysReg()' checks
 /// this bit and addAvailable sets it if.
-class VISIBILITY_HIDDEN AvailableSpills {
+class AvailableSpills {
   const TargetRegisterInfo *TRI;
   const TargetInstrInfo *TII;
 
@@ -340,7 +340,7 @@
 
 /// ReuseInfo - This maintains a collection of ReuseOp's for each operand that
 /// is reused instead of reloaded.
-class VISIBILITY_HIDDEN ReuseInfo {
+class ReuseInfo {
   MachineInstr &MI;
   std::vector<ReusedOp> Reuses;
   BitVector PhysRegsClobbered;
@@ -995,7 +995,7 @@
 
 namespace {
 
-class VISIBILITY_HIDDEN LocalRewriter : public VirtRegRewriter {
+class LocalRewriter : public VirtRegRewriter {
   MachineRegisterInfo *RegInfo;
   const TargetRegisterInfo *TRI;
   const TargetInstrInfo *TII;
diff --git a/lib/Target/ARM/ARMCodeEmitter.cpp b/lib/Target/ARM/ARMCodeEmitter.cpp
index 6f1c624..5911688 100644
--- a/lib/Target/ARM/ARMCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMCodeEmitter.cpp
@@ -56,8 +56,7 @@
   };
 
   template<class CodeEmitter>
-  class VISIBILITY_HIDDEN Emitter : public MachineFunctionPass,
-                                    public ARMCodeEmitter {
+  class Emitter : public MachineFunctionPass, public ARMCodeEmitter {
     ARMJITInfo                *JTI;
     const ARMInstrInfo        *II;
     const TargetData          *TD;
diff --git a/lib/Target/ARM/ARMConstantIslandPass.cpp b/lib/Target/ARM/ARMConstantIslandPass.cpp
index c995ff2..8c8ecab 100644
--- a/lib/Target/ARM/ARMConstantIslandPass.cpp
+++ b/lib/Target/ARM/ARMConstantIslandPass.cpp
@@ -55,7 +55,7 @@
   ///   Water   - Potential places where an island could be formed.
   ///   CPE     - A constant pool entry that has been placed somewhere, which
   ///             tracks a list of users.
-  class VISIBILITY_HIDDEN ARMConstantIslands : public MachineFunctionPass {
+  class ARMConstantIslands : public MachineFunctionPass {
     /// BBSizes - The size of each MachineBasicBlock in bytes of code, indexed
     /// by MBB Number.  The two-byte pads required for Thumb alignment are
     /// counted as part of the following block (i.e., the offset and size for
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index c9b9e84..7e80534 100644
--- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -56,7 +56,7 @@
 /// load / store instructions to form ldm / stm instructions.
 
 namespace {
-  struct VISIBILITY_HIDDEN ARMLoadStoreOpt : public MachineFunctionPass {
+  struct ARMLoadStoreOpt : public MachineFunctionPass {
     static char ID;
     ARMLoadStoreOpt() : MachineFunctionPass(&ID) {}
 
@@ -1106,7 +1106,7 @@
 /// likely they will be combined later.
 
 namespace {
-  struct VISIBILITY_HIDDEN ARMPreAllocLoadStoreOpt : public MachineFunctionPass{
+  struct ARMPreAllocLoadStoreOpt : public MachineFunctionPass{
     static char ID;
     ARMPreAllocLoadStoreOpt() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/ARM/NEONPreAllocPass.cpp b/lib/Target/ARM/NEONPreAllocPass.cpp
index 821b872..8b2bcd0 100644
--- a/lib/Target/ARM/NEONPreAllocPass.cpp
+++ b/lib/Target/ARM/NEONPreAllocPass.cpp
@@ -16,7 +16,7 @@
 using namespace llvm;
 
 namespace {
-  class VISIBILITY_HIDDEN NEONPreAllocPass : public MachineFunctionPass {
+  class NEONPreAllocPass : public MachineFunctionPass {
     const TargetInstrInfo *TII;
 
   public:
diff --git a/lib/Target/ARM/Thumb2ITBlockPass.cpp b/lib/Target/ARM/Thumb2ITBlockPass.cpp
index 427c0bb..6c3c4f6 100644
--- a/lib/Target/ARM/Thumb2ITBlockPass.cpp
+++ b/lib/Target/ARM/Thumb2ITBlockPass.cpp
@@ -21,7 +21,7 @@
 STATISTIC(NumITs,     "Number of IT blocks inserted");
 
 namespace {
-  struct VISIBILITY_HIDDEN Thumb2ITBlockPass : public MachineFunctionPass {
+  struct Thumb2ITBlockPass : public MachineFunctionPass {
     static char ID;
     Thumb2ITBlockPass() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/ARM/Thumb2SizeReduction.cpp b/lib/Target/ARM/Thumb2SizeReduction.cpp
index b8879d2..b212c0a 100644
--- a/lib/Target/ARM/Thumb2SizeReduction.cpp
+++ b/lib/Target/ARM/Thumb2SizeReduction.cpp
@@ -126,7 +126,7 @@
     { ARM::t2STM,   ARM::tSTM,    ARM::tPUSH,    0,   0,    1,   1,  1,1, 1 },
   };
 
-  class VISIBILITY_HIDDEN Thumb2SizeReduce : public MachineFunctionPass {
+  class Thumb2SizeReduce : public MachineFunctionPass {
   public:
     static char ID;
     Thumb2SizeReduce();
diff --git a/lib/Target/Alpha/AlphaBranchSelector.cpp b/lib/Target/Alpha/AlphaBranchSelector.cpp
index 719ffae..dd94bc9 100644
--- a/lib/Target/Alpha/AlphaBranchSelector.cpp
+++ b/lib/Target/Alpha/AlphaBranchSelector.cpp
@@ -21,7 +21,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN AlphaBSel : public MachineFunctionPass {
+  struct AlphaBSel : public MachineFunctionPass {
     static char ID;
     AlphaBSel() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/Alpha/AlphaCodeEmitter.cpp b/lib/Target/Alpha/AlphaCodeEmitter.cpp
index 8023add..ea828c8 100644
--- a/lib/Target/Alpha/AlphaCodeEmitter.cpp
+++ b/lib/Target/Alpha/AlphaCodeEmitter.cpp
@@ -50,8 +50,7 @@
   };
 
   template <class CodeEmitter>
-  class VISIBILITY_HIDDEN Emitter : public MachineFunctionPass,
-      public AlphaCodeEmitter
+  class Emitter : public MachineFunctionPass, public AlphaCodeEmitter
   {
     const AlphaInstrInfo  *II;
     TargetMachine         &TM;
diff --git a/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp b/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
index d8e8b79..d769746 100644
--- a/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
+++ b/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
@@ -37,7 +37,7 @@
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
 namespace {
-  struct VISIBILITY_HIDDEN AlphaAsmPrinter : public AsmPrinter {
+  struct AlphaAsmPrinter : public AsmPrinter {
     /// Unique incrementer for label values for referencing Global values.
     ///
 
diff --git a/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp b/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp
index 91fd5dd..1900d00 100644
--- a/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp
+++ b/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp
@@ -38,7 +38,7 @@
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
 namespace {
-  class VISIBILITY_HIDDEN BlackfinAsmPrinter : public AsmPrinter {
+  class BlackfinAsmPrinter : public AsmPrinter {
   public:
     BlackfinAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
                        const MCAsmInfo *MAI, bool V)
diff --git a/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp b/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
index 0f8d539..7db7ae4 100644
--- a/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
+++ b/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
@@ -50,7 +50,7 @@
 
   const std::string bss_section(".bss");
 
-  class VISIBILITY_HIDDEN SPUAsmPrinter : public AsmPrinter {
+  class SPUAsmPrinter : public AsmPrinter {
     std::set<std::string> FnStubs, GVStubs;
   public:
     explicit SPUAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
@@ -285,7 +285,7 @@
   };
 
   /// LinuxAsmPrinter - SPU assembly printer, customized for Linux
-  class VISIBILITY_HIDDEN LinuxAsmPrinter : public SPUAsmPrinter {
+  class LinuxAsmPrinter : public SPUAsmPrinter {
   public:
     explicit LinuxAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
                              const MCAsmInfo *T, bool V)
diff --git a/lib/Target/MSIL/MSILWriter.cpp b/lib/Target/MSIL/MSILWriter.cpp
index cf08a97..5899ab3 100644
--- a/lib/Target/MSIL/MSILWriter.cpp
+++ b/lib/Target/MSIL/MSILWriter.cpp
@@ -30,7 +30,7 @@
 
 namespace llvm {
   // TargetMachine for the MSIL 
-  struct VISIBILITY_HIDDEN MSILTarget : public TargetMachine {
+  struct MSILTarget : public TargetMachine {
     MSILTarget(const Target &T, const std::string &TT, const std::string &FS)
       : TargetMachine(T) {}
 
diff --git a/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp b/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp
index ace358e..b20d636 100644
--- a/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp
+++ b/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp
@@ -50,7 +50,7 @@
              cl::desc("enable experimental mcinst gunk in the msp430 backend"));
 
 namespace {
-  class VISIBILITY_HIDDEN MSP430AsmPrinter : public AsmPrinter {
+  class MSP430AsmPrinter : public AsmPrinter {
   public:
     MSP430AsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
                      const MCAsmInfo *MAI, bool V)
diff --git a/lib/Target/Mips/AsmPrinter/MipsAsmPrinter.cpp b/lib/Target/Mips/AsmPrinter/MipsAsmPrinter.cpp
index ccf9ee5..66ade89 100644
--- a/lib/Target/Mips/AsmPrinter/MipsAsmPrinter.cpp
+++ b/lib/Target/Mips/AsmPrinter/MipsAsmPrinter.cpp
@@ -51,7 +51,7 @@
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
 namespace {
-  class VISIBILITY_HIDDEN MipsAsmPrinter : public AsmPrinter {
+  class MipsAsmPrinter : public AsmPrinter {
     const MipsSubtarget *Subtarget;
   public:
     explicit MipsAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM, 
diff --git a/lib/Target/Mips/MipsISelDAGToDAG.cpp b/lib/Target/Mips/MipsISelDAGToDAG.cpp
index cc20dd7..be0feb1 100644
--- a/lib/Target/Mips/MipsISelDAGToDAG.cpp
+++ b/lib/Target/Mips/MipsISelDAGToDAG.cpp
@@ -46,7 +46,7 @@
 //===----------------------------------------------------------------------===//
 namespace {
 
-class VISIBILITY_HIDDEN MipsDAGToDAGISel : public SelectionDAGISel {
+class MipsDAGToDAGISel : public SelectionDAGISel {
 
   /// TM - Keep a reference to MipsTargetMachine.
   MipsTargetMachine &TM;
diff --git a/lib/Target/PIC16/PIC16MemSelOpt.cpp b/lib/Target/PIC16/PIC16MemSelOpt.cpp
index a97dc35..fb5affd 100644
--- a/lib/Target/PIC16/PIC16MemSelOpt.cpp
+++ b/lib/Target/PIC16/PIC16MemSelOpt.cpp
@@ -37,7 +37,7 @@
 using namespace llvm;
 
 namespace {
-  struct VISIBILITY_HIDDEN MemSelOpt : public MachineFunctionPass {
+  struct MemSelOpt : public MachineFunctionPass {
     static char ID;
     MemSelOpt() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index dc6b852..865240d 100644
--- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -55,7 +55,7 @@
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
 namespace {
-  class VISIBILITY_HIDDEN PPCAsmPrinter : public AsmPrinter {
+  class PPCAsmPrinter : public AsmPrinter {
   protected:
     struct FnStubInfo {
       std::string Stub, LazyPtr, AnonSymbol;
@@ -344,7 +344,7 @@
   };
 
   /// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux
-  class VISIBILITY_HIDDEN PPCLinuxAsmPrinter : public PPCAsmPrinter {
+  class PPCLinuxAsmPrinter : public PPCAsmPrinter {
   public:
     explicit PPCLinuxAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
                                 const MCAsmInfo *T, bool V)
@@ -369,7 +369,7 @@
 
   /// PPCDarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac
   /// OS X
-  class VISIBILITY_HIDDEN PPCDarwinAsmPrinter : public PPCAsmPrinter {
+  class PPCDarwinAsmPrinter : public PPCAsmPrinter {
     formatted_raw_ostream &OS;
   public:
     explicit PPCDarwinAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
diff --git a/lib/Target/PowerPC/PPCBranchSelector.cpp b/lib/Target/PowerPC/PPCBranchSelector.cpp
index b95a502..ad15456 100644
--- a/lib/Target/PowerPC/PPCBranchSelector.cpp
+++ b/lib/Target/PowerPC/PPCBranchSelector.cpp
@@ -30,7 +30,7 @@
 STATISTIC(NumExpanded, "Number of branches expanded to long format");
 
 namespace {
-  struct VISIBILITY_HIDDEN PPCBSel : public MachineFunctionPass {
+  struct PPCBSel : public MachineFunctionPass {
     static char ID;
     PPCBSel() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/PowerPC/PPCCodeEmitter.cpp b/lib/Target/PowerPC/PPCCodeEmitter.cpp
index 0675293..ccdc5fa 100644
--- a/lib/Target/PowerPC/PPCCodeEmitter.cpp
+++ b/lib/Target/PowerPC/PPCCodeEmitter.cpp
@@ -57,8 +57,7 @@
   };
 
   template <class CodeEmitter>
-  class VISIBILITY_HIDDEN Emitter : public MachineFunctionPass,
-      public PPCCodeEmitter {
+  class Emitter : public MachineFunctionPass, public PPCCodeEmitter {
     TargetMachine &TM;
     CodeEmitter &MCE;
 
diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 8fa6a66..a2e1850 100644
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -41,7 +41,7 @@
   /// PPCDAGToDAGISel - PPC specific code to select PPC machine
   /// instructions for SelectionDAG operations.
   ///
-  class VISIBILITY_HIDDEN PPCDAGToDAGISel : public SelectionDAGISel {
+  class PPCDAGToDAGISel : public SelectionDAGISel {
     PPCTargetMachine &TM;
     PPCTargetLowering &PPCLowering;
     const PPCSubtarget &PPCSubTarget;
diff --git a/lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp b/lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp
index a3e5fba..452b46f 100644
--- a/lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp
+++ b/lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp
@@ -44,7 +44,7 @@
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
 namespace {
-  class VISIBILITY_HIDDEN SparcAsmPrinter : public AsmPrinter {
+  class SparcAsmPrinter : public AsmPrinter {
     /// We name each basic block in a Function with a unique number, so
     /// that we can consistently refer to them later. This is cleared
     /// at the beginning of each call to runOnMachineFunction().
diff --git a/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp b/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
index a128992..2192c15 100644
--- a/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
+++ b/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
@@ -42,7 +42,7 @@
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
 namespace {
-  class VISIBILITY_HIDDEN SystemZAsmPrinter : public AsmPrinter {
+  class SystemZAsmPrinter : public AsmPrinter {
   public:
     SystemZAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
                       const MCAsmInfo *MAI, bool V)
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index f942f3f..f8c18fe 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -43,7 +43,7 @@
 
 namespace {
   template<class CodeEmitter>
-  class VISIBILITY_HIDDEN Emitter : public MachineFunctionPass {
+  class Emitter : public MachineFunctionPass {
     const X86InstrInfo  *II;
     const TargetData    *TD;
     X86TargetMachine    &TM;
diff --git a/lib/Target/X86/X86FloatingPoint.cpp b/lib/Target/X86/X86FloatingPoint.cpp
index d9a05a8..86aefde 100644
--- a/lib/Target/X86/X86FloatingPoint.cpp
+++ b/lib/Target/X86/X86FloatingPoint.cpp
@@ -53,7 +53,7 @@
 STATISTIC(NumFP  , "Number of floating point instructions");
 
 namespace {
-  struct VISIBILITY_HIDDEN FPS : public MachineFunctionPass {
+  struct FPS : public MachineFunctionPass {
     static char ID;
     FPS() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/X86/X86FloatingPointRegKill.cpp b/lib/Target/X86/X86FloatingPointRegKill.cpp
index 3e0385c..19f5d80 100644
--- a/lib/Target/X86/X86FloatingPointRegKill.cpp
+++ b/lib/Target/X86/X86FloatingPointRegKill.cpp
@@ -30,7 +30,7 @@
 STATISTIC(NumFPKill, "Number of FP_REG_KILL instructions added");
 
 namespace {
-  struct VISIBILITY_HIDDEN FPRegKiller : public MachineFunctionPass {
+  struct FPRegKiller : public MachineFunctionPass {
     static char ID;
     FPRegKiller() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 5b678fb..4ed7615 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -147,7 +147,7 @@
   /// ISel - X86 specific code to select X86 machine instructions for
   /// SelectionDAG operations.
   ///
-  class VISIBILITY_HIDDEN X86DAGToDAGISel : public SelectionDAGISel {
+  class X86DAGToDAGISel : public SelectionDAGISel {
     /// X86Lowering - This object fully describes how to lower LLVM code to an
     /// X86-specific SelectionDAG.
     X86TargetLowering &X86Lowering;
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index f03723a..24e832c 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -1473,7 +1473,7 @@
 #include "X86GenRegisterInfo.inc"
 
 namespace {
-  struct VISIBILITY_HIDDEN MSAC : public MachineFunctionPass {
+  struct MSAC : public MachineFunctionPass {
     static char ID;
     MSAC() : MachineFunctionPass(&ID) {}
 
diff --git a/lib/Target/XCore/AsmPrinter/XCoreAsmPrinter.cpp b/lib/Target/XCore/AsmPrinter/XCoreAsmPrinter.cpp
index e58edda..bc1bbc3 100644
--- a/lib/Target/XCore/AsmPrinter/XCoreAsmPrinter.cpp
+++ b/lib/Target/XCore/AsmPrinter/XCoreAsmPrinter.cpp
@@ -52,7 +52,7 @@
   cl::init(8));
 
 namespace {
-  class VISIBILITY_HIDDEN XCoreAsmPrinter : public AsmPrinter {
+  class XCoreAsmPrinter : public AsmPrinter {
     const XCoreSubtarget &Subtarget;
   public:
     explicit XCoreAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
diff --git a/lib/Transforms/IPO/ArgumentPromotion.cpp b/lib/Transforms/IPO/ArgumentPromotion.cpp
index 5b91f3d..518c007 100644
--- a/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -59,7 +59,7 @@
 namespace {
   /// ArgPromotion - The 'by reference' to 'by value' argument promotion pass.
   ///
-  struct VISIBILITY_HIDDEN ArgPromotion : public CallGraphSCCPass {
+  struct ArgPromotion : public CallGraphSCCPass {
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequired<AliasAnalysis>();
       CallGraphSCCPass::getAnalysisUsage(AU);
diff --git a/lib/Transforms/IPO/ConstantMerge.cpp b/lib/Transforms/IPO/ConstantMerge.cpp
index c1a1045..824fe30 100644
--- a/lib/Transforms/IPO/ConstantMerge.cpp
+++ b/lib/Transforms/IPO/ConstantMerge.cpp
@@ -29,7 +29,7 @@
 STATISTIC(NumMerged, "Number of global constants merged");
 
 namespace {
-  struct VISIBILITY_HIDDEN ConstantMerge : public ModulePass {
+  struct ConstantMerge : public ModulePass {
     static char ID; // Pass identification, replacement for typeid
     ConstantMerge() : ModulePass(&ID) {}
 
diff --git a/lib/Transforms/IPO/DeadArgumentElimination.cpp b/lib/Transforms/IPO/DeadArgumentElimination.cpp
index 79a32f0..69be069 100644
--- a/lib/Transforms/IPO/DeadArgumentElimination.cpp
+++ b/lib/Transforms/IPO/DeadArgumentElimination.cpp
@@ -44,7 +44,7 @@
 namespace {
   /// DAE - The dead argument elimination pass.
   ///
-  class VISIBILITY_HIDDEN DAE : public ModulePass {
+  class DAE : public ModulePass {
   public:
 
     /// Struct that represents (part of) either a return value or a function
diff --git a/lib/Transforms/IPO/DeadTypeElimination.cpp b/lib/Transforms/IPO/DeadTypeElimination.cpp
index 85aed2b..b78fe5b 100644
--- a/lib/Transforms/IPO/DeadTypeElimination.cpp
+++ b/lib/Transforms/IPO/DeadTypeElimination.cpp
@@ -25,7 +25,7 @@
 STATISTIC(NumKilled, "Number of unused typenames removed from symtab");
 
 namespace {
-  struct VISIBILITY_HIDDEN DTE : public ModulePass {
+  struct DTE : public ModulePass {
     static char ID; // Pass identification, replacement for typeid
     DTE() : ModulePass(&ID) {}
 
diff --git a/lib/Transforms/IPO/ExtractGV.cpp b/lib/Transforms/IPO/ExtractGV.cpp
index 191100c..8f5dc0c 100644
--- a/lib/Transforms/IPO/ExtractGV.cpp
+++ b/lib/Transforms/IPO/ExtractGV.cpp
@@ -23,7 +23,7 @@
 
 namespace {
   /// @brief A pass to extract specific functions and their dependencies.
-  class VISIBILITY_HIDDEN GVExtractorPass : public ModulePass {
+  class GVExtractorPass : public ModulePass {
     std::vector<GlobalValue*> Named;
     bool deleteStuff;
     bool reLink;
diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp
index 0701b94..1e5c012 100644
--- a/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -40,7 +40,7 @@
 STATISTIC(NumNoAlias, "Number of function returns marked noalias");
 
 namespace {
-  struct VISIBILITY_HIDDEN FunctionAttrs : public CallGraphSCCPass {
+  struct FunctionAttrs : public CallGraphSCCPass {
     static char ID; // Pass identification, replacement for typeid
     FunctionAttrs() : CallGraphSCCPass(&ID) {}
 
diff --git a/lib/Transforms/IPO/GlobalDCE.cpp b/lib/Transforms/IPO/GlobalDCE.cpp
index 8f4e8b3..79434ca 100644
--- a/lib/Transforms/IPO/GlobalDCE.cpp
+++ b/lib/Transforms/IPO/GlobalDCE.cpp
@@ -30,7 +30,7 @@
 STATISTIC(NumVariables, "Number of global variables removed");
 
 namespace {
-  struct VISIBILITY_HIDDEN GlobalDCE : public ModulePass {
+  struct GlobalDCE : public ModulePass {
     static char ID; // Pass identification, replacement for typeid
     GlobalDCE() : ModulePass(&ID) {}
 
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 0bc086f..001fb9d 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -57,7 +57,7 @@
 STATISTIC(NumAliasesRemoved, "Number of global aliases eliminated");
 
 namespace {
-  struct VISIBILITY_HIDDEN GlobalOpt : public ModulePass {
+  struct GlobalOpt : public ModulePass {
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     }
     static char ID; // Pass identification, replacement for typeid
@@ -85,7 +85,7 @@
 /// GlobalStatus - As we analyze each global, keep track of some information
 /// about it.  If we find out that the address of the global is taken, none of
 /// this info will be accurate.
-struct VISIBILITY_HIDDEN GlobalStatus {
+struct GlobalStatus {
   /// isLoaded - True if the global is ever loaded.  If the global isn't ever
   /// loaded it can be deleted.
   bool isLoaded;
diff --git a/lib/Transforms/IPO/IPConstantPropagation.cpp b/lib/Transforms/IPO/IPConstantPropagation.cpp
index 7b0e9c7..6ef95b3 100644
--- a/lib/Transforms/IPO/IPConstantPropagation.cpp
+++ b/lib/Transforms/IPO/IPConstantPropagation.cpp
@@ -35,7 +35,7 @@
 namespace {
   /// IPCP - The interprocedural constant propagation pass
   ///
-  struct VISIBILITY_HIDDEN IPCP : public ModulePass {
+  struct IPCP : public ModulePass {
     static char ID; // Pass identification, replacement for typeid
     IPCP() : ModulePass(&ID) {}
 
diff --git a/lib/Transforms/IPO/InlineAlways.cpp b/lib/Transforms/IPO/InlineAlways.cpp
index 2344403..49f0a9a 100644
--- a/lib/Transforms/IPO/InlineAlways.cpp
+++ b/lib/Transforms/IPO/InlineAlways.cpp
@@ -31,7 +31,7 @@
 namespace {
 
   // AlwaysInliner only inlines functions that are mark as "always inline".
-  class VISIBILITY_HIDDEN AlwaysInliner : public Inliner {
+  class AlwaysInliner : public Inliner {
     // Functions that are never inlined
     SmallPtrSet<const Function*, 16> NeverInline; 
     InlineCostAnalyzer CA;
diff --git a/lib/Transforms/IPO/InlineSimple.cpp b/lib/Transforms/IPO/InlineSimple.cpp
index b1c643b..6bbf624 100644
--- a/lib/Transforms/IPO/InlineSimple.cpp
+++ b/lib/Transforms/IPO/InlineSimple.cpp
@@ -29,7 +29,7 @@
 
 namespace {
 
-  class VISIBILITY_HIDDEN SimpleInliner : public Inliner {
+  class SimpleInliner : public Inliner {
     // Functions that are never inlined
     SmallPtrSet<const Function*, 16> NeverInline; 
     InlineCostAnalyzer CA;
diff --git a/lib/Transforms/IPO/Internalize.cpp b/lib/Transforms/IPO/Internalize.cpp
index e3c3c67..aa6c859 100644
--- a/lib/Transforms/IPO/Internalize.cpp
+++ b/lib/Transforms/IPO/Internalize.cpp
@@ -44,7 +44,7 @@
         cl::CommaSeparated);
 
 namespace {
-  class VISIBILITY_HIDDEN InternalizePass : public ModulePass {
+  class InternalizePass : public ModulePass {
     std::set<std::string> ExternalNames;
     /// If no api symbols were specified and a main function is defined,
     /// assume the main function is the only API
diff --git a/lib/Transforms/IPO/LoopExtractor.cpp b/lib/Transforms/IPO/LoopExtractor.cpp
index 02ac3bb..5e9167b 100644
--- a/lib/Transforms/IPO/LoopExtractor.cpp
+++ b/lib/Transforms/IPO/LoopExtractor.cpp
@@ -33,7 +33,7 @@
 STATISTIC(NumExtracted, "Number of loops extracted");
 
 namespace {
-  struct VISIBILITY_HIDDEN LoopExtractor : public LoopPass {
+  struct LoopExtractor : public LoopPass {
     static char ID; // Pass identification, replacement for typeid
     unsigned NumLoops;
 
diff --git a/lib/Transforms/IPO/LowerSetJmp.cpp b/lib/Transforms/IPO/LowerSetJmp.cpp
index 55194b3..a9a58d7 100644
--- a/lib/Transforms/IPO/LowerSetJmp.cpp
+++ b/lib/Transforms/IPO/LowerSetJmp.cpp
@@ -62,8 +62,7 @@
 namespace {
   //===--------------------------------------------------------------------===//
   // LowerSetJmp pass implementation.
-  class VISIBILITY_HIDDEN LowerSetJmp : public ModulePass,
-                      public InstVisitor<LowerSetJmp> {
+  class LowerSetJmp : public ModulePass, public InstVisitor<LowerSetJmp> {
     // LLVM library functions...
     Constant *InitSJMap;        // __llvm_sjljeh_init_setjmpmap
     Constant *DestroySJMap;     // __llvm_sjljeh_destroy_setjmpmap
diff --git a/lib/Transforms/IPO/MergeFunctions.cpp b/lib/Transforms/IPO/MergeFunctions.cpp
index 13bbf9c..c3433c7 100644
--- a/lib/Transforms/IPO/MergeFunctions.cpp
+++ b/lib/Transforms/IPO/MergeFunctions.cpp
@@ -62,7 +62,7 @@
 STATISTIC(NumFunctionsMerged, "Number of functions merged");
 
 namespace {
-  struct VISIBILITY_HIDDEN MergeFunctions : public ModulePass {
+  struct MergeFunctions : public ModulePass {
     static char ID; // Pass identification, replacement for typeid
     MergeFunctions() : ModulePass(&ID) {}
 
diff --git a/lib/Transforms/IPO/PartialInlining.cpp b/lib/Transforms/IPO/PartialInlining.cpp
index 8f858d3..f17fbbd 100644
--- a/lib/Transforms/IPO/PartialInlining.cpp
+++ b/lib/Transforms/IPO/PartialInlining.cpp
@@ -28,7 +28,7 @@
 STATISTIC(NumPartialInlined, "Number of functions partially inlined");
 
 namespace {
-  struct VISIBILITY_HIDDEN PartialInliner : public ModulePass {
+  struct PartialInliner : public ModulePass {
     virtual void getAnalysisUsage(AnalysisUsage &AU) const { }
     static char ID; // Pass identification, replacement for typeid
     PartialInliner() : ModulePass(&ID) {}
diff --git a/lib/Transforms/IPO/PartialSpecialization.cpp b/lib/Transforms/IPO/PartialSpecialization.cpp
index 0e1fdb9..e3ae5fa 100644
--- a/lib/Transforms/IPO/PartialSpecialization.cpp
+++ b/lib/Transforms/IPO/PartialSpecialization.cpp
@@ -41,7 +41,7 @@
 static const double ConstValPercent = .1;
 
 namespace {
-  class VISIBILITY_HIDDEN PartSpec : public ModulePass {
+  class PartSpec : public ModulePass {
     void scanForInterest(Function&, SmallVector<int, 6>&);
     int scanDistribution(Function&, int, std::map<Constant*, int>&);
   public :
diff --git a/lib/Transforms/IPO/PruneEH.cpp b/lib/Transforms/IPO/PruneEH.cpp
index daf81e9..b5182e2 100644
--- a/lib/Transforms/IPO/PruneEH.cpp
+++ b/lib/Transforms/IPO/PruneEH.cpp
@@ -36,7 +36,7 @@
 STATISTIC(NumUnreach, "Number of noreturn calls optimized");
 
 namespace {
-  struct VISIBILITY_HIDDEN PruneEH : public CallGraphSCCPass {
+  struct PruneEH : public CallGraphSCCPass {
     static char ID; // Pass identification, replacement for typeid
     PruneEH() : CallGraphSCCPass(&ID) {}
 
diff --git a/lib/Transforms/IPO/StripDeadPrototypes.cpp b/lib/Transforms/IPO/StripDeadPrototypes.cpp
index a94d78e..48b4c10 100644
--- a/lib/Transforms/IPO/StripDeadPrototypes.cpp
+++ b/lib/Transforms/IPO/StripDeadPrototypes.cpp
@@ -27,7 +27,7 @@
 namespace {
 
 /// @brief Pass to remove unused function declarations.
-class VISIBILITY_HIDDEN StripDeadPrototypesPass : public ModulePass {
+class StripDeadPrototypesPass : public ModulePass {
 public:
   static char ID; // Pass identification, replacement for typeid
   StripDeadPrototypesPass() : ModulePass(&ID) { }
diff --git a/lib/Transforms/IPO/StructRetPromotion.cpp b/lib/Transforms/IPO/StructRetPromotion.cpp
index 4442820..2239c11 100644
--- a/lib/Transforms/IPO/StructRetPromotion.cpp
+++ b/lib/Transforms/IPO/StructRetPromotion.cpp
@@ -44,7 +44,7 @@
   /// SRETPromotion - This pass removes sret parameter and updates
   /// function to use multiple return value.
   ///
-  struct VISIBILITY_HIDDEN SRETPromotion : public CallGraphSCCPass {
+  struct SRETPromotion : public CallGraphSCCPass {
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       CallGraphSCCPass::getAnalysisUsage(AU);
     }
diff --git a/lib/Transforms/Instrumentation/BlockProfiling.cpp b/lib/Transforms/Instrumentation/BlockProfiling.cpp
index eb8f225..8fc6a79 100644
--- a/lib/Transforms/Instrumentation/BlockProfiling.cpp
+++ b/lib/Transforms/Instrumentation/BlockProfiling.cpp
@@ -30,7 +30,7 @@
 using namespace llvm;
 
 namespace {
-  class VISIBILITY_HIDDEN FunctionProfiler : public RSProfilers_std {
+  class FunctionProfiler : public RSProfilers_std {
   public:
     static char ID;
     bool runOnModule(Module &M);
diff --git a/lib/Transforms/Instrumentation/EdgeProfiling.cpp b/lib/Transforms/Instrumentation/EdgeProfiling.cpp
index b9cb275..1a707e0 100644
--- a/lib/Transforms/Instrumentation/EdgeProfiling.cpp
+++ b/lib/Transforms/Instrumentation/EdgeProfiling.cpp
@@ -31,7 +31,7 @@
 STATISTIC(NumEdgesInserted, "The # of edges inserted.");
 
 namespace {
-  class VISIBILITY_HIDDEN EdgeProfiler : public ModulePass {
+  class EdgeProfiler : public ModulePass {
     bool runOnModule(Module &M);
   public:
     static char ID; // Pass identification, replacement for typeid
diff --git a/lib/Transforms/Instrumentation/OptimalEdgeProfiling.cpp b/lib/Transforms/Instrumentation/OptimalEdgeProfiling.cpp
index b2e6747..466c34c 100644
--- a/lib/Transforms/Instrumentation/OptimalEdgeProfiling.cpp
+++ b/lib/Transforms/Instrumentation/OptimalEdgeProfiling.cpp
@@ -33,7 +33,7 @@
 STATISTIC(NumEdgesInserted, "The # of edges inserted.");
 
 namespace {
-  class VISIBILITY_HIDDEN OptimalEdgeProfiler : public ModulePass {
+  class OptimalEdgeProfiler : public ModulePass {
     bool runOnModule(Module &M);
   public:
     static char ID; // Pass identification, replacement for typeid
diff --git a/lib/Transforms/Instrumentation/RSProfiling.cpp b/lib/Transforms/Instrumentation/RSProfiling.cpp
index 3b72260..132dd0c 100644
--- a/lib/Transforms/Instrumentation/RSProfiling.cpp
+++ b/lib/Transforms/Instrumentation/RSProfiling.cpp
@@ -72,7 +72,7 @@
   /// NullProfilerRS - The basic profiler that does nothing.  It is the default
   /// profiler and thus terminates RSProfiler chains.  It is useful for 
   /// measuring framework overhead
-  class VISIBILITY_HIDDEN NullProfilerRS : public RSProfilers {
+  class NullProfilerRS : public RSProfilers {
   public:
     static char ID; // Pass identification, replacement for typeid
     bool isProfiling(Value* v) {
@@ -94,7 +94,7 @@
 
 namespace {
   /// Chooser - Something that chooses when to make a sample of the profiled code
-  class VISIBILITY_HIDDEN Chooser {
+  class Chooser {
   public:
     /// ProcessChoicePoint - is called for each basic block inserted to choose 
     /// between normal and sample code
@@ -108,7 +108,7 @@
   //Things that implement sampling policies
   //A global value that is read-mod-stored to choose when to sample.
   //A sample is taken when the global counter hits 0
-  class VISIBILITY_HIDDEN GlobalRandomCounter : public Chooser {
+  class GlobalRandomCounter : public Chooser {
     GlobalVariable* Counter;
     Value* ResetValue;
     const IntegerType* T;
@@ -120,7 +120,7 @@
   };
 
   //Same is GRC, but allow register allocation of the global counter
-  class VISIBILITY_HIDDEN GlobalRandomCounterOpt : public Chooser {
+  class GlobalRandomCounterOpt : public Chooser {
     GlobalVariable* Counter;
     Value* ResetValue;
     AllocaInst* AI;
@@ -134,7 +134,7 @@
 
   //Use the cycle counter intrinsic as a source of pseudo randomness when
   //deciding when to sample.
-  class VISIBILITY_HIDDEN CycleCounter : public Chooser {
+  class CycleCounter : public Chooser {
     uint64_t rm;
     Constant *F;
   public:
@@ -145,7 +145,7 @@
   };
 
   /// ProfilerRS - Insert the random sampling framework
-  struct VISIBILITY_HIDDEN ProfilerRS : public FunctionPass {
+  struct ProfilerRS : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     ProfilerRS() : FunctionPass(&ID) {}
 
diff --git a/lib/Transforms/Utils/BasicInliner.cpp b/lib/Transforms/Utils/BasicInliner.cpp
index 4b720b1..b5ffe06 100644
--- a/lib/Transforms/Utils/BasicInliner.cpp
+++ b/lib/Transforms/Utils/BasicInliner.cpp
@@ -34,7 +34,7 @@
 
   /// BasicInlinerImpl - BasicInliner implemantation class. This hides
   /// container info, used by basic inliner, from public interface.
-  struct VISIBILITY_HIDDEN BasicInlinerImpl {
+  struct BasicInlinerImpl {
     
     BasicInlinerImpl(const BasicInlinerImpl&); // DO NOT IMPLEMENT
     void operator=(const BasicInlinerImpl&); // DO NO IMPLEMENT
diff --git a/lib/Transforms/Utils/BreakCriticalEdges.cpp b/lib/Transforms/Utils/BreakCriticalEdges.cpp
index 849b2b5..5c9821f 100644
--- a/lib/Transforms/Utils/BreakCriticalEdges.cpp
+++ b/lib/Transforms/Utils/BreakCriticalEdges.cpp
@@ -35,7 +35,7 @@
 STATISTIC(NumBroken, "Number of blocks inserted");
 
 namespace {
-  struct VISIBILITY_HIDDEN BreakCriticalEdges : public FunctionPass {
+  struct BreakCriticalEdges : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     BreakCriticalEdges() : FunctionPass(&ID) {}
 
diff --git a/lib/Transforms/Utils/CloneFunction.cpp b/lib/Transforms/Utils/CloneFunction.cpp
index 5e8bf0a..38297ff 100644
--- a/lib/Transforms/Utils/CloneFunction.cpp
+++ b/lib/Transforms/Utils/CloneFunction.cpp
@@ -175,7 +175,7 @@
 namespace {
   /// PruningFunctionCloner - This class is a private class used to implement
   /// the CloneAndPruneFunctionInto method.
-  struct VISIBILITY_HIDDEN PruningFunctionCloner {
+  struct PruningFunctionCloner {
     Function *NewFunc;
     const Function *OldFunc;
     DenseMap<const Value*, Value*> &ValueMap;
diff --git a/lib/Transforms/Utils/CodeExtractor.cpp b/lib/Transforms/Utils/CodeExtractor.cpp
index c39ccf7..20b9197 100644
--- a/lib/Transforms/Utils/CodeExtractor.cpp
+++ b/lib/Transforms/Utils/CodeExtractor.cpp
@@ -44,7 +44,7 @@
                  cl::desc("Aggregate arguments to code-extracted functions"));
 
 namespace {
-  class VISIBILITY_HIDDEN CodeExtractor {
+  class CodeExtractor {
     typedef std::vector<Value*> Values;
     std::set<BasicBlock*> BlocksToExtract;
     DominatorTree* DT;
diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp
index c22708a..94a17f7 100644
--- a/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/lib/Transforms/Utils/LoopSimplify.cpp
@@ -57,7 +57,7 @@
 STATISTIC(NumNested  , "Number of nested loops split out");
 
 namespace {
-  struct VISIBILITY_HIDDEN LoopSimplify : public LoopPass {
+  struct LoopSimplify : public LoopPass {
     static char ID; // Pass identification, replacement for typeid
     LoopSimplify() : LoopPass(&ID) {}
 
diff --git a/lib/Transforms/Utils/LowerAllocations.cpp b/lib/Transforms/Utils/LowerAllocations.cpp
index f64a30f..d50a3c9 100644
--- a/lib/Transforms/Utils/LowerAllocations.cpp
+++ b/lib/Transforms/Utils/LowerAllocations.cpp
@@ -31,7 +31,7 @@
 namespace {
   /// LowerAllocations - Turn free instructions into @free calls.
   ///
-  class VISIBILITY_HIDDEN LowerAllocations : public BasicBlockPass {
+  class LowerAllocations : public BasicBlockPass {
     Constant *FreeFunc;   // Functions in the module we are processing
                           // Initialized by doInitialization
   public:
diff --git a/lib/Transforms/Utils/LowerInvoke.cpp b/lib/Transforms/Utils/LowerInvoke.cpp
index 9a3de26..1a370c8 100644
--- a/lib/Transforms/Utils/LowerInvoke.cpp
+++ b/lib/Transforms/Utils/LowerInvoke.cpp
@@ -61,7 +61,7 @@
  cl::desc("Make the -lowerinvoke pass insert expensive, but correct, EH code"));
 
 namespace {
-  class VISIBILITY_HIDDEN LowerInvoke : public FunctionPass {
+  class LowerInvoke : public FunctionPass {
     // Used for both models.
     Constant *WriteFn;
     Constant *AbortFn;
diff --git a/lib/Transforms/Utils/LowerSwitch.cpp b/lib/Transforms/Utils/LowerSwitch.cpp
index 764f098..7bfa430 100644
--- a/lib/Transforms/Utils/LowerSwitch.cpp
+++ b/lib/Transforms/Utils/LowerSwitch.cpp
@@ -31,7 +31,7 @@
   /// LowerSwitch Pass - Replace all SwitchInst instructions with chained branch
   /// instructions.  Note that this cannot be a BasicBlock pass because it
   /// modifies the CFG!
-  class VISIBILITY_HIDDEN LowerSwitch : public FunctionPass {
+  class LowerSwitch : public FunctionPass {
   public:
     static char ID; // Pass identification, replacement for typeid
     LowerSwitch() : FunctionPass(&ID) {} 
diff --git a/lib/Transforms/Utils/Mem2Reg.cpp b/lib/Transforms/Utils/Mem2Reg.cpp
index 5df0832..d9f665f 100644
--- a/lib/Transforms/Utils/Mem2Reg.cpp
+++ b/lib/Transforms/Utils/Mem2Reg.cpp
@@ -26,7 +26,7 @@
 STATISTIC(NumPromoted, "Number of alloca's promoted");
 
 namespace {
-  struct VISIBILITY_HIDDEN PromotePass : public FunctionPass {
+  struct PromotePass : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     PromotePass() : FunctionPass(&ID) {}
 
diff --git a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 9ca06bd..bacd9c0 100644
--- a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -100,7 +100,7 @@
   struct AllocaInfo;
 
   // Data package used by RenamePass()
-  class VISIBILITY_HIDDEN RenamePassData {
+  class RenamePassData {
   public:
     typedef std::vector<Value *> ValVector;
     
@@ -123,7 +123,7 @@
   ///
   /// This functionality is important because it avoids scanning large basic
   /// blocks multiple times when promoting many allocas in the same block.
-  class VISIBILITY_HIDDEN LargeBlockInfo {
+  class LargeBlockInfo {
     /// InstNumbers - For each instruction that we track, keep the index of the
     /// instruction.  The index starts out as the number of the instruction from
     /// the start of the block.
@@ -170,7 +170,7 @@
     }
   };
 
-  struct VISIBILITY_HIDDEN PromoteMem2Reg {
+  struct PromoteMem2Reg {
     /// Allocas - The alloca instructions being promoted.
     ///
     std::vector<AllocaInst*> Allocas;
diff --git a/lib/Transforms/Utils/SSI.cpp b/lib/Transforms/Utils/SSI.cpp
index 3bb2e8e..1c4afff 100644
--- a/lib/Transforms/Utils/SSI.cpp
+++ b/lib/Transforms/Utils/SSI.cpp
@@ -396,7 +396,7 @@
 /// SSIEverything - A pass that runs createSSI on every non-void variable,
 /// intended for debugging.
 namespace {
-  struct VISIBILITY_HIDDEN SSIEverything : public FunctionPass {
+  struct SSIEverything : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     SSIEverything() : FunctionPass(&ID) {}
 
diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp
index f10bc6f..eb097ed 100644
--- a/lib/VMCore/PassManager.cpp
+++ b/lib/VMCore/PassManager.cpp
@@ -105,8 +105,7 @@
 /// BBPassManager manages BasicBlockPass. It batches all the
 /// pass together and sequence them to process one basic block before
 /// processing next basic block.
-class VISIBILITY_HIDDEN BBPassManager : public PMDataManager, 
-                                        public FunctionPass {
+class BBPassManager : public PMDataManager, public FunctionPass {
 
 public:
   static char ID;
@@ -367,7 +366,7 @@
 
 static ManagedStatic<sys::SmartMutex<true> > TimingInfoMutex;
 
-class VISIBILITY_HIDDEN TimingInfo {
+class TimingInfo {
   std::map<Pass*, Timer> TimingData;
   TimerGroup TG;
 
diff --git a/lib/VMCore/PrintModulePass.cpp b/lib/VMCore/PrintModulePass.cpp
index 0a7f449..52a791b 100644
--- a/lib/VMCore/PrintModulePass.cpp
+++ b/lib/VMCore/PrintModulePass.cpp
@@ -22,7 +22,7 @@
 
 namespace {
 
-  class VISIBILITY_HIDDEN PrintModulePass : public ModulePass {
+  class PrintModulePass : public ModulePass {
     raw_ostream *Out;       // raw_ostream to print on
     bool DeleteStream;      // Delete the ostream in our dtor?
   public:
diff --git a/lib/VMCore/Verifier.cpp b/lib/VMCore/Verifier.cpp
index a0d3a24..3000bfe 100644
--- a/lib/VMCore/Verifier.cpp
+++ b/lib/VMCore/Verifier.cpp
@@ -70,7 +70,7 @@
 using namespace llvm;
 
 namespace {  // Anonymous namespace for class
-  struct VISIBILITY_HIDDEN PreVerifier : public FunctionPass {
+  struct PreVerifier : public FunctionPass {
     static char ID; // Pass ID, replacement for typeid
 
     PreVerifier() : FunctionPass(&ID) { }