diff --git a/include/llvm/MC/MCDwarf.h b/include/llvm/MC/MCDwarf.h
index c671dd9fbbc..7a06cc07622 100644
--- a/include/llvm/MC/MCDwarf.h
+++ b/include/llvm/MC/MCDwarf.h
@@ -23,6 +23,7 @@
 #include <vector>
 
 namespace llvm {
+class MCAsmBackend;
 class MCContext;
 class MCSection;
 class MCStreamer;
@@ -449,7 +450,8 @@ public:
   //
   // This emits the frame info section.
   //
-  static void Emit(MCStreamer &streamer, bool usingCFI, bool isEH);
+  static void Emit(MCStreamer &streamer, MCAsmBackend *MAB,
+                   bool usingCFI, bool isEH);
   static void EmitAdvanceLoc(MCStreamer &Streamer, uint64_t AddrDelta);
   static void EncodeAdvanceLoc(MCContext &Context, uint64_t AddrDelta,
                                raw_ostream &OS);
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h
index c849e597b6b..cd297a4d9da 100644
--- a/include/llvm/MC/MCStreamer.h
+++ b/include/llvm/MC/MCStreamer.h
@@ -104,7 +104,7 @@ protected:
   virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
   void RecordProcEnd(MCDwarfFrameInfo &Frame);
   virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &CurFrame);
-  void EmitFrames(bool usingCFI);
+  void EmitFrames(MCAsmBackend *MAB, bool usingCFI);
 
   MCWin64EHUnwindInfo *getCurrentW64UnwindInfo() {
     return CurrentW64UnwindInfo;
@@ -134,7 +134,7 @@ public:
     return *W64UnwindInfos[i];
   }
 
-  void generateCompactUnwindEncodings(MCAsmBackend &MAB);
+  void generateCompactUnwindEncodings(MCAsmBackend *MAB);
 
   /// @name Assembly File Formatting.
   /// @{
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index 6fd68ee7750..5699511a4de 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -175,12 +175,11 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
 
     // Create a code emitter if asked to show the encoding.
     MCCodeEmitter *MCE = 0;
-    MCAsmBackend *MAB = 0;
-    if (ShowMCEncoding) {
+    if (ShowMCEncoding)
       MCE = getTarget().createMCCodeEmitter(MII, MRI, STI, *Context);
-      MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(), TargetCPU);
-    }
 
+    MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(),
+                                                       TargetCPU);
     MCStreamer *S = getTarget().createAsmStreamer(*Context, Out,
                                                   getVerboseAsm(),
                                                   hasMCUseLoc(),
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 60d72abbcb8..c612a23f953 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -1421,8 +1421,9 @@ void MCAsmStreamer::FinishImpl() {
     MCGenDwarfInfo::Emit(this, LineSectionSymbol);
 
   if (!UseCFI)
-    EmitFrames(false);
+    EmitFrames(AsmBackend.get(), false);
 }
+
 MCStreamer *llvm::createAsmStreamer(MCContext &Context,
                                     formatted_raw_ostream &OS,
                                     bool isVerboseAsm, bool useLoc,
diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index a5528a2d42f..f47553204b2 100644
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -1415,9 +1415,10 @@ namespace llvm {
   };
 }
 
-void MCDwarfFrameEmitter::Emit(MCStreamer &Streamer,
-                               bool UsingCFI,
-                               bool IsEH) {
+void MCDwarfFrameEmitter::Emit(MCStreamer &Streamer, MCAsmBackend *MAB,
+                               bool UsingCFI, bool IsEH) {
+  Streamer.generateCompactUnwindEncodings(MAB);
+
   MCContext &Context = Streamer.getContext();
   const MCObjectFileInfo *MOFI = Context.getObjectFileInfo();
   FrameEmitterImpl Emitter(UsingCFI, IsEH);
diff --git a/lib/MC/MCELFStreamer.cpp b/lib/MC/MCELFStreamer.cpp
index 4661d503c37..a04352a8b28 100644
--- a/lib/MC/MCELFStreamer.cpp
+++ b/lib/MC/MCELFStreamer.cpp
@@ -528,7 +528,7 @@ void MCELFStreamer::EmitBundleUnlock() {
 }
 
 void MCELFStreamer::FinishImpl() {
-  EmitFrames(true);
+  EmitFrames(NULL, true);
 
   for (std::vector<LocalCommon>::const_iterator i = LocalCommons.begin(),
                                                 e = LocalCommons.end();
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
index f914f62c2f7..e628461f1d6 100644
--- a/lib/MC/MCMachOStreamer.cpp
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -396,8 +396,7 @@ void MCMachOStreamer::EmitInstToData(const MCInst &Inst) {
 }
 
 void MCMachOStreamer::FinishImpl() {
-  generateCompactUnwindEncodings(getAssembler().getBackend());
-  EmitFrames(true);
+  EmitFrames(&getAssembler().getBackend(), true);
 
   // We have to set the fragment atom associations so we can relax properly for
   // Mach-O.
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index 806bec98968..c16670ad7ca 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -73,12 +73,12 @@ raw_ostream &MCStreamer::GetCommentOS() {
   return nulls();
 }
 
-void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend &MAB) {
+void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
+  if (!MAB) return;
   for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
          E = FrameInfos.end(); I != E; ++I)
-    if (!I->CompactUnwindEncoding)
-      I->CompactUnwindEncoding =
-        MAB.generateCompactUnwindEncoding(I->Instructions);
+    I->CompactUnwindEncoding =
+      MAB->generateCompactUnwindEncoding(I->Instructions);
 }
 
 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
@@ -604,15 +604,15 @@ void MCStreamer::EmitRawText(const Twine &T) {
   EmitRawText(Str.str());
 }
 
-void MCStreamer::EmitFrames(bool usingCFI) {
+void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
   if (!getNumFrameInfos())
     return;
 
   if (EmitEHFrame)
-    MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
+    MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
 
   if (EmitDebugFrame)
-    MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
+    MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, false);
 }
 
 void MCStreamer::EmitW64Tables() {