diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index 1001d2b5460..735e31f2524 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -29,9 +29,9 @@ using namespace llvm;
 
 // Always verify loopinfo if expensive checking is enabled.
 #ifdef XDEBUG
-bool VerifyLoopInfo = true;
+static bool VerifyLoopInfo = true;
 #else
-bool VerifyLoopInfo = false;
+static bool VerifyLoopInfo = false;
 #endif
 static cl::opt<bool,true>
 VerifyLoopInfoX("verify-loop-info", cl::location(VerifyLoopInfo),
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 1d1339078de..b90f0515a42 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -642,6 +642,8 @@ static const Loop *GetRelevantLoop(const SCEV *S, LoopInfo &LI,
   llvm_unreachable("Unexpected SCEV type!");
 }
 
+namespace {
+
 /// LoopCompare - Compare loops by PickMostRelevantLoop.
 class LoopCompare {
   DominatorTree &DT;
@@ -668,6 +670,8 @@ public:
   }
 };
 
+}
+
 Value *SCEVExpander::visitAddExpr(const SCEVAddExpr *S) {
   const Type *Ty = SE.getEffectiveSCEVType(S->getType());
 
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index e9f074ea307..ff69f549425 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1331,7 +1331,7 @@ DbgScope *DwarfDebug::getOrCreateAbstractScope(MDNode *N) {
 
 /// isSubprogramContext - Return true if Context is either a subprogram
 /// or another context nested inside a subprogram.
-bool isSubprogramContext(MDNode *Context) {
+static bool isSubprogramContext(MDNode *Context) {
   if (!Context)
     return false;
   DIDescriptor D(Context);
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp
index 19fb52c05d9..0b75c559827 100644
--- a/lib/CodeGen/MachineVerifier.cpp
+++ b/lib/CodeGen/MachineVerifier.cpp
@@ -351,8 +351,8 @@ void MachineVerifier::visitMachineFunctionBefore() {
 }
 
 // Does iterator point to a and b as the first two elements?
-bool matchPair(MachineBasicBlock::const_succ_iterator i,
-               const MachineBasicBlock *a, const MachineBasicBlock *b) {
+static bool matchPair(MachineBasicBlock::const_succ_iterator i,
+                      const MachineBasicBlock *a, const MachineBasicBlock *b) {
   if (*i == a)
     return *++i == b;
   if (*i == b)
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index d320b658f6c..7a4a4f9a1ad 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -1881,6 +1881,7 @@ static unsigned IsPredicateKnownToFail(const unsigned char *Table,
   }
 }
 
+namespace {
 
 struct MatchScope {
   /// FailIndex - If this match fails, this is the index to continue with.
@@ -1902,6 +1903,8 @@ struct MatchScope {
   bool HasChainNodesMatched, HasFlagResultNodesMatched;
 };
 
+}
+
 SDNode *SelectionDAGISel::
 SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
                  unsigned TableSize) {
diff --git a/lib/Support/Debug.cpp b/lib/Support/Debug.cpp
index eccfa0bd072..7f48f8aae71 100644
--- a/lib/Support/Debug.cpp
+++ b/lib/Support/Debug.cpp
@@ -51,12 +51,19 @@ DebugBufferSize("debug-buffer-size",
                 cl::init(0));
 
 static std::string CurrentDebugType;
-static struct DebugOnlyOpt {
+
+namespace {
+
+struct DebugOnlyOpt {
   void operator=(const std::string &Val) const {
     DebugFlag |= !Val.empty();
     CurrentDebugType = Val;
   }
-} DebugOnlyOptLoc;
+};
+
+}
+
+static DebugOnlyOpt DebugOnlyOptLoc;
 
 static cl::opt<DebugOnlyOpt, true, cl::parser<std::string> >
 DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
diff --git a/lib/Support/Timer.cpp b/lib/Support/Timer.cpp
index 4fac0737f0c..481f6ba5086 100644
--- a/lib/Support/Timer.cpp
+++ b/lib/Support/Timer.cpp
@@ -190,6 +190,8 @@ void TimeRecord::print(const TimeRecord &Total, raw_ostream &OS) const {
 //   NamedRegionTimer Implementation
 //===----------------------------------------------------------------------===//
 
+namespace {
+
 typedef StringMap<Timer> Name2TimerMap;
 
 class Name2PairMap {
@@ -216,6 +218,8 @@ public:
   }
 };
 
+}
+
 static ManagedStatic<Name2TimerMap> NamedTimers;
 static ManagedStatic<Name2PairMap> NamedGroupedTimers;
 
diff --git a/lib/System/DynamicLibrary.cpp b/lib/System/DynamicLibrary.cpp
index ebc8acf3061..6f6890c06c4 100644
--- a/lib/System/DynamicLibrary.cpp
+++ b/lib/System/DynamicLibrary.cpp
@@ -24,12 +24,18 @@
 // Collection of symbol name/value pairs to be searched prior to any libraries.
 static std::map<std::string, void*> *ExplicitSymbols = 0;
 
-static struct ExplicitSymbolsDeleter {
+namespace {
+
+struct ExplicitSymbolsDeleter {
   ~ExplicitSymbolsDeleter() {
     if (ExplicitSymbols)
       delete ExplicitSymbols;
   }
-} Dummy;
+};
+
+}
+
+static ExplicitSymbolsDeleter Dummy;
 
 void llvm::sys::DynamicLibrary::AddSymbol(const char* symbolName,
                                           void *symbolValue) {
diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp
index 264187594c7..5fb7e740a16 100644
--- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp
+++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp
@@ -40,7 +40,7 @@
 #include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
-cl::opt<bool>
+static cl::opt<bool>
 ReuseFrameIndexVals("arm-reuse-frame-index-vals", cl::Hidden, cl::init(true),
           cl::desc("Reuse repeated frame index values"));
 
diff --git a/lib/Target/PowerPC/PPCRegisterInfo.cpp b/lib/Target/PowerPC/PPCRegisterInfo.cpp
index 52d87cde803..b488af562c7 100644
--- a/lib/Target/PowerPC/PPCRegisterInfo.cpp
+++ b/lib/Target/PowerPC/PPCRegisterInfo.cpp
@@ -56,14 +56,14 @@ using namespace llvm;
 #define ALIGN_STACK 0
 
 // FIXME (64-bit): Eventually enable by default.
-cl::opt<bool> EnablePPC32RS("enable-ppc32-regscavenger",
-                            cl::init(false),
-                            cl::desc("Enable PPC32 register scavenger"),
-                            cl::Hidden);
-cl::opt<bool> EnablePPC64RS("enable-ppc64-regscavenger",
-                            cl::init(false),
-                            cl::desc("Enable PPC64 register scavenger"),
-                            cl::Hidden);
+static cl::opt<bool> EnablePPC32RS("enable-ppc32-regscavenger",
+                                   cl::init(false),
+                                   cl::desc("Enable PPC32 register scavenger"),
+                                   cl::Hidden);
+static cl::opt<bool> EnablePPC64RS("enable-ppc64-regscavenger",
+                                   cl::init(false),
+                                   cl::desc("Enable PPC64 register scavenger"),
+                                   cl::Hidden);
 #define EnableRegisterScavenging \
   ((EnablePPC32RS && !Subtarget.isPPC64()) || \
    (EnablePPC64RS && Subtarget.isPPC64()))
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 2c62815eb8b..321def7eb61 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1217,7 +1217,7 @@ static Value *GetMemInstValueForLoad(MemIntrinsic *SrcInst, unsigned Offset,
   return ConstantFoldLoadFromConstPtr(Src, &TD);
 }
 
-
+namespace {
 
 struct AvailableValueInBlock {
   /// BB - The basic block in question.
@@ -1291,6 +1291,8 @@ struct AvailableValueInBlock {
   }
 };
 
+}
+
 /// ConstructSSAForLoadSet - Given a set of loads specified by ValuesPerBlock,
 /// construct SSA form, allowing us to eliminate LI.  This returns the value
 /// that should be used at LI's definition site.
diff --git a/lib/VMCore/Dominators.cpp b/lib/VMCore/Dominators.cpp
index b014e69ee82..10a866fab62 100644
--- a/lib/VMCore/Dominators.cpp
+++ b/lib/VMCore/Dominators.cpp
@@ -30,9 +30,9 @@ using namespace llvm;
 
 // Always verify dominfo if expensive checking is enabled.
 #ifdef XDEBUG
-bool VerifyDomInfo = true;
+static bool VerifyDomInfo = true;
 #else
-bool VerifyDomInfo = false;
+static bool VerifyDomInfo = false;
 #endif
 static cl::opt<bool,true>
 VerifyDomInfoX("verify-dom-info", cl::location(VerifyDomInfo),
diff --git a/lib/VMCore/LLVMContextImpl.cpp b/lib/VMCore/LLVMContextImpl.cpp
index e71157f4402..9e41a081560 100644
--- a/lib/VMCore/LLVMContextImpl.cpp
+++ b/lib/VMCore/LLVMContextImpl.cpp
@@ -13,6 +13,7 @@
 
 #include "LLVMContextImpl.h"
 #include <algorithm>
+using namespace llvm;
 
 LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
   : TheTrueVal(0), TheFalseVal(0),
diff --git a/lib/VMCore/LeaksContext.h b/lib/VMCore/LeaksContext.h
index abff090b879..b9e59d46b7a 100644
--- a/lib/VMCore/LeaksContext.h
+++ b/lib/VMCore/LeaksContext.h
@@ -14,7 +14,8 @@
 
 #include "llvm/Value.h"
 #include "llvm/ADT/SmallPtrSet.h"
-using namespace llvm;
+
+namespace llvm {
 
 template <class T>
 struct PrinterTrait {
@@ -87,3 +88,5 @@ private:
   const T* Cache;
   const char* Name;
 };
+
+}
diff --git a/utils/TableGen/X86DisassemblerTables.cpp b/utils/TableGen/X86DisassemblerTables.cpp
index be070317fc6..2176224523a 100644
--- a/utils/TableGen/X86DisassemblerTables.cpp
+++ b/utils/TableGen/X86DisassemblerTables.cpp
@@ -161,7 +161,7 @@ void DisassemblerTables::emitOneID(raw_ostream &o,
 /// @param i        - The indentation level for that output stream.
 static void emitEmptyTable(raw_ostream &o, uint32_t &i)
 {
-  o.indent(i * 2) << "InstrUID modRMEmptyTable[1] = { 0 };" << "\n";
+  o.indent(i * 2) << "static InstrUID modRMEmptyTable[1] = { 0 };" << "\n";
   o << "\n";
 }
 
@@ -275,7 +275,7 @@ void DisassemblerTables::emitModRMDecision(raw_ostream &o1,
     return;
   }
     
-  o1.indent(i1) << "InstrUID modRMTable" << thisTableNumber;
+  o1.indent(i1) << "static InstrUID modRMTable" << thisTableNumber;
     
   switch (dt) {
     default: