diff --git a/include/llvm/MC/MCInstBuilder.h b/include/llvm/MC/MCInstBuilder.h
index 7d4a9d0..c5acb26 100644
--- a/include/llvm/MC/MCInstBuilder.h
+++ b/include/llvm/MC/MCInstBuilder.h
@@ -16,7 +16,6 @@
 #define LLVM_MC_MCINSTBUILDER_H
 
 #include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCStreamer.h"
 
 namespace llvm {
 
@@ -59,9 +58,8 @@
     return *this;
   }
 
-  /// \brief Emit the built instruction to an MCStreamer.
-  void emit(MCStreamer &OutStreamer) {
-    OutStreamer.EmitInstruction(Inst);
+  operator MCInst&() {
+    return Inst;
   }
 };
 
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index f32966d..7d48bc1 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -1052,11 +1052,10 @@
                                                       OutContext);
     // If this isn't a TBB or TBH, the entries are direct branch instructions.
     if (OffsetWidth == 4) {
-      MCInstBuilder(ARM::t2B)
+      OutStreamer.EmitInstruction(MCInstBuilder(ARM::t2B)
         .addExpr(MBBSymbolExpr)
         .addImm(ARMCC::AL)
-        .addReg(0)
-        .emit(OutStreamer);
+        .addReg(0));
       continue;
     }
     // Otherwise it's an offset from the dispatch instruction. Construct an
@@ -1277,15 +1276,15 @@
   case ARM::t2LEApcrel: {
     // FIXME: Need to also handle globals and externals
     MCSymbol *CPISymbol = GetCPISymbol(MI->getOperand(1).getIndex());
-    MCInstBuilder(MI->getOpcode() == ARM::t2LEApcrel ? ARM::t2ADR
+    OutStreamer.EmitInstruction(MCInstBuilder(MI->getOpcode() ==
+                                              ARM::t2LEApcrel ? ARM::t2ADR
                   : (MI->getOpcode() == ARM::tLEApcrel ? ARM::tADR
                      : ARM::ADR))
       .addReg(MI->getOperand(0).getReg())
       .addExpr(MCSymbolRefExpr::Create(CPISymbol, OutContext))
       // Add predicate operands.
       .addImm(MI->getOperand(2).getImm())
-      .addReg(MI->getOperand(3).getReg())
-      .emit(OutStreamer);
+      .addReg(MI->getOperand(3).getReg()));
     return;
   }
   case ARM::LEApcrelJT:
@@ -1294,94 +1293,86 @@
     MCSymbol *JTIPICSymbol =
       GetARMJTIPICJumpTableLabel2(MI->getOperand(1).getIndex(),
                                   MI->getOperand(2).getImm());
-    MCInstBuilder(MI->getOpcode() == ARM::t2LEApcrelJT ? ARM::t2ADR
+    OutStreamer.EmitInstruction(MCInstBuilder(MI->getOpcode() ==
+                                              ARM::t2LEApcrelJT ? ARM::t2ADR
                   : (MI->getOpcode() == ARM::tLEApcrelJT ? ARM::tADR
                      : ARM::ADR))
       .addReg(MI->getOperand(0).getReg())
       .addExpr(MCSymbolRefExpr::Create(JTIPICSymbol, OutContext))
       // Add predicate operands.
       .addImm(MI->getOperand(3).getImm())
-      .addReg(MI->getOperand(4).getReg())
-      .emit(OutStreamer);
+      .addReg(MI->getOperand(4).getReg()));
     return;
   }
   // Darwin call instructions are just normal call instructions with different
   // clobber semantics (they clobber R9).
   case ARM::BX_CALL: {
-    MCInstBuilder(ARM::MOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::MOVr)
       .addReg(ARM::LR)
       .addReg(ARM::PC)
       // Add predicate operands.
       .addImm(ARMCC::AL)
       .addReg(0)
       // Add 's' bit operand (always reg0 for this)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::BX)
-      .addReg(MI->getOperand(0).getReg())
-      .emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::BX)
+      .addReg(MI->getOperand(0).getReg()));
     return;
   }
   case ARM::tBX_CALL: {
-    MCInstBuilder(ARM::tMOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tMOVr)
       .addReg(ARM::LR)
       .addReg(ARM::PC)
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tBX)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tBX)
       .addReg(MI->getOperand(0).getReg())
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::BMOVPCRX_CALL: {
-    MCInstBuilder(ARM::MOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::MOVr)
       .addReg(ARM::LR)
       .addReg(ARM::PC)
       // Add predicate operands.
       .addImm(ARMCC::AL)
       .addReg(0)
       // Add 's' bit operand (always reg0 for this)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::MOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::MOVr)
       .addReg(ARM::PC)
       .addImm(MI->getOperand(0).getReg())
       // Add predicate operands.
       .addImm(ARMCC::AL)
       .addReg(0)
       // Add 's' bit operand (always reg0 for this)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::BMOVPCB_CALL: {
-    MCInstBuilder(ARM::MOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::MOVr)
       .addReg(ARM::LR)
       .addReg(ARM::PC)
       // Add predicate operands.
       .addImm(ARMCC::AL)
       .addReg(0)
       // Add 's' bit operand (always reg0 for this)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     const GlobalValue *GV = MI->getOperand(0).getGlobal();
     MCSymbol *GVSym = Mang->getSymbol(GV);
     const MCExpr *GVSymExpr = MCSymbolRefExpr::Create(GVSym, OutContext);
-    MCInstBuilder(ARM::Bcc)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::Bcc)
       .addExpr(GVSymExpr)
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::MOVi16_ga_pcrel:
@@ -1469,14 +1460,13 @@
                           OutContext));
 
     // Form and emit the add.
-    MCInstBuilder(ARM::tADDhirr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tADDhirr)
       .addReg(MI->getOperand(0).getReg())
       .addReg(MI->getOperand(0).getReg())
       .addReg(ARM::PC)
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::PICADD: {
@@ -1491,7 +1481,7 @@
                           OutContext));
 
     // Form and emit the add.
-    MCInstBuilder(ARM::ADDrr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::ADDrr)
       .addReg(MI->getOperand(0).getReg())
       .addReg(ARM::PC)
       .addReg(MI->getOperand(1).getReg())
@@ -1499,8 +1489,7 @@
       .addImm(MI->getOperand(3).getImm())
       .addReg(MI->getOperand(4).getReg())
       // Add 's' bit operand (always reg0 for this)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::PICSTR:
@@ -1536,15 +1525,14 @@
     case ARM::PICLDRSB: Opcode = ARM::LDRSB; break;
     case ARM::PICLDRSH: Opcode = ARM::LDRSH; break;
     }
-    MCInstBuilder(Opcode)
+    OutStreamer.EmitInstruction(MCInstBuilder(Opcode)
       .addReg(MI->getOperand(0).getReg())
       .addReg(ARM::PC)
       .addReg(MI->getOperand(1).getReg())
       .addImm(0)
       // Add predicate operands.
       .addImm(MI->getOperand(3).getImm())
-      .addReg(MI->getOperand(4).getReg())
-      .emit(OutStreamer);
+      .addReg(MI->getOperand(4).getReg()));
 
     return;
   }
@@ -1574,13 +1562,12 @@
   }
   case ARM::t2BR_JT: {
     // Lower and emit the instruction itself, then the jump table following it.
-    MCInstBuilder(ARM::tMOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tMOVr)
       .addReg(ARM::PC)
       .addReg(MI->getOperand(0).getReg())
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     // Output the data for the jump table itself
     EmitJump2Table(MI);
@@ -1588,13 +1575,12 @@
   }
   case ARM::t2TBB_JT: {
     // Lower and emit the instruction itself, then the jump table following it.
-    MCInstBuilder(ARM::t2TBB)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::t2TBB)
       .addReg(ARM::PC)
       .addReg(MI->getOperand(0).getReg())
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     // Output the data for the jump table itself
     EmitJump2Table(MI);
@@ -1604,13 +1590,12 @@
   }
   case ARM::t2TBH_JT: {
     // Lower and emit the instruction itself, then the jump table following it.
-    MCInstBuilder(ARM::t2TBH)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::t2TBH)
       .addReg(ARM::PC)
       .addReg(MI->getOperand(0).getReg())
       // Add predicate operands.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     // Output the data for the jump table itself
     EmitJump2Table(MI);
@@ -1671,7 +1656,7 @@
   case ARM::BR_JTadd: {
     // Lower and emit the instruction itself, then the jump table following it.
     // add pc, target, idx
-    MCInstBuilder(ARM::ADDrr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::ADDrr)
       .addReg(ARM::PC)
       .addReg(MI->getOperand(0).getReg())
       .addReg(MI->getOperand(1).getReg())
@@ -1679,8 +1664,7 @@
       .addImm(ARMCC::AL)
       .addReg(0)
       // Add 's' bit operand (always reg0 for this)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     // Output the data for the jump table itself
     EmitJumpTable(MI);
@@ -1725,15 +1709,14 @@
     unsigned ValReg = MI->getOperand(1).getReg();
     MCSymbol *Label = GetARMSJLJEHLabel();
     OutStreamer.AddComment("eh_setjmp begin");
-    MCInstBuilder(ARM::tMOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tMOVr)
       .addReg(ValReg)
       .addReg(ARM::PC)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tADDi3)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tADDi3)
       .addReg(ValReg)
       // 's' bit operand
       .addReg(ARM::CPSR)
@@ -1741,10 +1724,9 @@
       .addImm(7)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tSTRi)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tSTRi)
       .addReg(ValReg)
       .addReg(SrcReg)
       // The offset immediate is #4. The operand value is scaled by 4 for the
@@ -1752,34 +1734,30 @@
       .addImm(1)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tMOVi8)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tMOVi8)
       .addReg(ARM::R0)
       .addReg(ARM::CPSR)
       .addImm(0)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     const MCExpr *SymbolExpr = MCSymbolRefExpr::Create(Label, OutContext);
-    MCInstBuilder(ARM::tB)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tB)
       .addExpr(SymbolExpr)
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     OutStreamer.AddComment("eh_setjmp end");
-    MCInstBuilder(ARM::tMOVi8)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tMOVi8)
       .addReg(ARM::R0)
       .addReg(ARM::CPSR)
       .addImm(1)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     OutStreamer.EmitLabel(Label);
     return;
@@ -1797,7 +1775,7 @@
     unsigned ValReg = MI->getOperand(1).getReg();
 
     OutStreamer.AddComment("eh_setjmp begin");
-    MCInstBuilder(ARM::ADDri)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::ADDri)
       .addReg(ValReg)
       .addReg(ARM::PC)
       .addImm(8)
@@ -1805,29 +1783,26 @@
       .addImm(ARMCC::AL)
       .addReg(0)
       // 's' bit operand (always reg0 for this).
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::STRi12)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::STRi12)
       .addReg(ValReg)
       .addReg(SrcReg)
       .addImm(4)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::MOVi)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::MOVi)
       .addReg(ARM::R0)
       .addImm(0)
       // Predicate.
       .addImm(ARMCC::AL)
       .addReg(0)
       // 's' bit operand (always reg0 for this).
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::ADDri)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::ADDri)
       .addReg(ARM::PC)
       .addReg(ARM::PC)
       .addImm(0)
@@ -1835,19 +1810,17 @@
       .addImm(ARMCC::AL)
       .addReg(0)
       // 's' bit operand (always reg0 for this).
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
     OutStreamer.AddComment("eh_setjmp end");
-    MCInstBuilder(ARM::MOVi)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::MOVi)
       .addReg(ARM::R0)
       .addImm(1)
       // Predicate.
       .addImm(ARMCC::AL)
       .addReg(0)
       // 's' bit operand (always reg0 for this).
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::Int_eh_sjlj_longjmp: {
@@ -1857,39 +1830,35 @@
     // bx $scratch
     unsigned SrcReg = MI->getOperand(0).getReg();
     unsigned ScratchReg = MI->getOperand(1).getReg();
-    MCInstBuilder(ARM::LDRi12)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::LDRi12)
       .addReg(ARM::SP)
       .addReg(SrcReg)
       .addImm(8)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::LDRi12)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::LDRi12)
       .addReg(ScratchReg)
       .addReg(SrcReg)
       .addImm(4)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::LDRi12)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::LDRi12)
       .addReg(ARM::R7)
       .addReg(SrcReg)
       .addImm(0)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::BX)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::BX)
       .addReg(ScratchReg)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   case ARM::tInt_eh_sjlj_longjmp: {
@@ -1900,7 +1869,7 @@
     // bx $scratch
     unsigned SrcReg = MI->getOperand(0).getReg();
     unsigned ScratchReg = MI->getOperand(1).getReg();
-    MCInstBuilder(ARM::tLDRi)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tLDRi)
       .addReg(ScratchReg)
       .addReg(SrcReg)
       // The offset immediate is #8. The operand value is scaled by 4 for the
@@ -1908,41 +1877,36 @@
       .addImm(2)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tMOVr)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tMOVr)
       .addReg(ARM::SP)
       .addReg(ScratchReg)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tLDRi)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tLDRi)
       .addReg(ScratchReg)
       .addReg(SrcReg)
       .addImm(1)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tLDRi)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tLDRi)
       .addReg(ARM::R7)
       .addReg(SrcReg)
       .addImm(0)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
 
-    MCInstBuilder(ARM::tBX)
+    OutStreamer.EmitInstruction(MCInstBuilder(ARM::tBX)
       .addReg(ScratchReg)
       // Predicate.
       .addImm(ARMCC::AL)
-      .addReg(0)
-      .emit(OutStreamer);
+      .addReg(0));
     return;
   }
   }
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 515a8e7..3900c8b 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -350,11 +350,10 @@
     MCSymbol *PICBase = MF->getPICBaseSymbol();
     
     // Emit the 'bl'.
-    MCInstBuilder(PPC::BL_Darwin) // Darwin vs SVR4 doesn't matter here.
+    OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL_Darwin) // Darwin vs SVR4 doesn't matter here.
       // FIXME: We would like an efficient form for this, so we don't have to do
       // a lot of extra uniquing.
-      .addExpr(MCSymbolRefExpr::Create(PICBase, OutContext))
-      .emit(OutStreamer);
+      .addExpr(MCSymbolRefExpr::Create(PICBase, OutContext)));
     
     // Emit the label.
     OutStreamer.EmitLabel(PICBase);
@@ -403,9 +402,8 @@
     // Into:      %R3 = MFCR      ;; cr7
     OutStreamer.AddComment(PPCInstPrinter::
                            getRegisterName(MI->getOperand(1).getReg()));
-    MCInstBuilder(Subtarget.isPPC64() ? PPC::MFCR8 : PPC::MFCR)
-      .addReg(MI->getOperand(0).getReg())
-      .emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ? PPC::MFCR8 : PPC::MFCR)
+      .addReg(MI->getOperand(0).getReg()));
     return;
   case PPC::SYNC:
     // In Book E sync is called msync, handle this special case here...
@@ -586,36 +584,34 @@
       OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
 
       // mflr r0
-      MCInstBuilder(PPC::MFLR).addReg(PPC::R0).emit(OutStreamer);
+      OutStreamer.EmitInstruction(MCInstBuilder(PPC::MFLR).addReg(PPC::R0));
       // FIXME: MCize this.
       OutStreamer.EmitRawText("\tbcl 20, 31, " + Twine(AnonSymbol->getName()));
       OutStreamer.EmitLabel(AnonSymbol);
       // mflr r11
-      MCInstBuilder(PPC::MFLR).addReg(PPC::R11).emit(OutStreamer);
+      OutStreamer.EmitInstruction(MCInstBuilder(PPC::MFLR).addReg(PPC::R11));
       // addis r11, r11, ha16(LazyPtr - AnonSymbol)
       const MCExpr *Sub =
         MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(LazyPtr, OutContext),
                                 MCSymbolRefExpr::Create(AnonSymbol, OutContext),
                                 OutContext);
-      MCInstBuilder(PPC::ADDIS)
+      OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS)
         .addReg(PPC::R11)
         .addReg(PPC::R11)
-        .addExpr(Sub)
-        .emit(OutStreamer);
+        .addExpr(Sub));
       // mtlr r0
-      MCInstBuilder(PPC::MTLR).addReg(PPC::R0).emit(OutStreamer);
+      OutStreamer.EmitInstruction(MCInstBuilder(PPC::MTLR).addReg(PPC::R0));
 
       // ldu r12, lo16(LazyPtr - AnonSymbol)(r11)
       // lwzu r12, lo16(LazyPtr - AnonSymbol)(r11)
-      MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
+      OutStreamer.EmitInstruction(MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
         .addReg(PPC::R12)
         .addExpr(Sub).addExpr(Sub)
-        .addReg(PPC::R11)
-        .emit(OutStreamer);
+        .addReg(PPC::R11));
       // mtctr r12
-      MCInstBuilder(PPC::MTCTR).addReg(PPC::R12).emit(OutStreamer);
+      OutStreamer.EmitInstruction(MCInstBuilder(PPC::MTCTR).addReg(PPC::R12));
       // bctr
-      MCInstBuilder(PPC::BCTR).emit(OutStreamer);
+      OutStreamer.EmitInstruction(MCInstBuilder(PPC::BCTR));
 
       OutStreamer.SwitchSection(LSPSection);
       OutStreamer.EmitLabel(LazyPtr);
@@ -653,26 +649,24 @@
     const MCExpr *LazyPtrHa16 =
       MCSymbolRefExpr::Create(LazyPtr, MCSymbolRefExpr::VK_PPC_DARWIN_HA16,
                               OutContext);
-    MCInstBuilder(PPC::LIS)
+    OutStreamer.EmitInstruction(MCInstBuilder(PPC::LIS)
       .addReg(PPC::R11)
-      .addExpr(LazyPtrHa16)
-      .emit(OutStreamer);
+      .addExpr(LazyPtrHa16));
 
     const MCExpr *LazyPtrLo16 =
       MCSymbolRefExpr::Create(LazyPtr, MCSymbolRefExpr::VK_PPC_DARWIN_LO16,
                               OutContext);
     // ldu r12, lo16(LazyPtr)(r11)
     // lwzu r12, lo16(LazyPtr)(r11)
-    MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
+    OutStreamer.EmitInstruction(MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
       .addReg(PPC::R12)
       .addExpr(LazyPtrLo16).addExpr(LazyPtrLo16)
-      .addReg(PPC::R11)
-      .emit(OutStreamer);
+      .addReg(PPC::R11));
 
     // mtctr r12
-    MCInstBuilder(PPC::MTCTR).addReg(PPC::R12).emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(PPC::MTCTR).addReg(PPC::R12));
     // bctr
-    MCInstBuilder(PPC::BCTR).emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(PPC::BCTR));
 
     OutStreamer.SwitchSection(LSPSection);
     OutStreamer.EmitLabel(LazyPtr);
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp
index 13fb251..5896318 100644
--- a/lib/Target/X86/X86MCInstLower.cpp
+++ b/lib/Target/X86/X86MCInstLower.cpp
@@ -555,7 +555,7 @@
     OutMI.addOperand(MCOperand::CreateReg(X86::R10));
     OutMI.addOperand(MCOperand::CreateReg(X86::RAX));
 
-    MCInstBuilder(X86::RET).emit(AsmPrinter.OutStreamer);
+    AsmPrinter.OutStreamer.EmitInstruction(MCInstBuilder(X86::RET));
     break;
   }
 }
@@ -572,7 +572,7 @@
   MCContext &context = OutStreamer.getContext();
 
   if (needsPadding)
-    MCInstBuilder(X86::DATA16_PREFIX).emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::DATA16_PREFIX));
 
   MCSymbolRefExpr::VariantKind SRVK;
   switch (MI.getOpcode()) {
@@ -622,9 +622,9 @@
   OutStreamer.EmitInstruction(LEA);
 
   if (needsPadding) {
-    MCInstBuilder(X86::DATA16_PREFIX).emit(OutStreamer);
-    MCInstBuilder(X86::DATA16_PREFIX).emit(OutStreamer);
-    MCInstBuilder(X86::REX64_PREFIX).emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::DATA16_PREFIX));
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::DATA16_PREFIX));
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::REX64_PREFIX));
   }
 
   StringRef name = is64Bits ? "__tls_get_addr" : "___tls_get_addr";
@@ -634,9 +634,9 @@
                             MCSymbolRefExpr::VK_PLT,
                             context);
 
-  MCInstBuilder(is64Bits ? X86::CALL64pcrel32 : X86::CALLpcrel32)
-    .addExpr(tlsRef)
-    .emit(OutStreamer);
+  OutStreamer.EmitInstruction(MCInstBuilder(is64Bits ? X86::CALL64pcrel32
+                                                     : X86::CALLpcrel32)
+    .addExpr(tlsRef));
 }
 
 void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
@@ -690,17 +690,15 @@
     MCSymbol *PICBase = MF->getPICBaseSymbol();
     // FIXME: We would like an efficient form for this, so we don't have to do a
     // lot of extra uniquing.
-    MCInstBuilder(X86::CALLpcrel32)
-      .addExpr(MCSymbolRefExpr::Create(PICBase, OutContext))
-      .emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::CALLpcrel32)
+      .addExpr(MCSymbolRefExpr::Create(PICBase, OutContext)));
 
     // Emit the label.
     OutStreamer.EmitLabel(PICBase);
 
     // popl $reg
-    MCInstBuilder(X86::POP32r)
-      .addReg(MI->getOperand(0).getReg())
-      .emit(OutStreamer);
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::POP32r)
+      .addReg(MI->getOperand(0).getReg()));
     return;
   }
 
@@ -730,11 +728,10 @@
     DotExpr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(OpSym,OutContext),
                                       DotExpr, OutContext);
 
-    MCInstBuilder(X86::ADD32ri)
+    OutStreamer.EmitInstruction(MCInstBuilder(X86::ADD32ri)
       .addReg(MI->getOperand(0).getReg())
       .addReg(MI->getOperand(1).getReg())
-      .addExpr(DotExpr)
-      .emit(OutStreamer);
+      .addExpr(DotExpr));
     return;
   }
   }