diff --git a/include/llvm/MC/MCExpr.h b/include/llvm/MC/MCExpr.h
index 0932783..2ae1e84 100644
--- a/include/llvm/MC/MCExpr.h
+++ b/include/llvm/MC/MCExpr.h
@@ -162,6 +162,7 @@
     VK_TPOFF,
     VK_DTPOFF,
     VK_TLVP,      // Mach-O thread local variable relocation
+    VK_SECREL,
     // FIXME: We'd really like to use the generic Kinds listed above for these.
     VK_ARM_PLT,   // ARM-style PLT references. i.e., (PLT) instead of @PLT
     VK_ARM_TLSGD, //   ditto for TLSGD, GOT, GOTOFF, TPOFF and GOTTPOFF
diff --git a/include/llvm/MC/MCObjectFileInfo.h b/include/llvm/MC/MCObjectFileInfo.h
index c3d2019..e58e7d6 100644
--- a/include/llvm/MC/MCObjectFileInfo.h
+++ b/include/llvm/MC/MCObjectFileInfo.h
@@ -109,7 +109,7 @@
   const MCSection *TLSExtraDataSection;
   
   /// TLSDataSection - Section directive for Thread Local data.
-  /// ELF and MachO only.
+  /// ELF, MachO and COFF.
   const MCSection *TLSDataSection;        // Defaults to ".tdata".
 
   /// TLSBSSSection - Section directive for Thread Local uninitialized data.
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index fd67d62..3a71f4f 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -588,6 +588,11 @@
       COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
       COFF::IMAGE_SCN_MEM_READ |
       COFF::IMAGE_SCN_MEM_WRITE;
+  else if (K.isThreadLocal())
+    Flags |=
+      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+      COFF::IMAGE_SCN_MEM_READ |
+      COFF::IMAGE_SCN_MEM_WRITE;
   else if (K.isReadOnly())
     Flags |=
       COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
@@ -614,6 +619,8 @@
     return ".text$";
   if (Kind.isBSS ())
     return ".bss$";
+  if (Kind.isThreadLocal())
+    return ".tls$";
   if (Kind.isWriteable())
     return ".data$";
   return ".rdata$";
@@ -623,7 +630,6 @@
 const MCSection *TargetLoweringObjectFileCOFF::
 SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
                        Mangler *Mang, const TargetMachine &TM) const {
-  assert(!Kind.isThreadLocal() && "Doesn't support TLS");
 
   // If this global is linkonce/weak and the target handles this by emitting it
   // into a 'uniqued' section name, create and return the section now.
@@ -644,6 +650,9 @@
   if (Kind.isText())
     return getTextSection();
 
+  if (Kind.isThreadLocal())
+    return getTLSDataSection();
+
   return getDataSection();
 }
 
diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp
index ccdccdf..f3a91cb 100644
--- a/lib/MC/MCExpr.cpp
+++ b/lib/MC/MCExpr.cpp
@@ -188,6 +188,7 @@
   case VK_TPOFF: return "TPOFF";
   case VK_DTPOFF: return "DTPOFF";
   case VK_TLVP: return "TLVP";
+  case VK_SECREL: return "SECREL";
   case VK_ARM_PLT: return "(PLT)";
   case VK_ARM_GOT: return "(GOT)";
   case VK_ARM_GOTOFF: return "(GOTOFF)";
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 4c03aaa..1b86535 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -495,6 +495,12 @@
                         COFF::IMAGE_SCN_MEM_READ |
                         COFF::IMAGE_SCN_MEM_WRITE,
                         SectionKind::getDataRel());
+  TLSDataSection =
+    Ctx->getCOFFSection(".tls$",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getDataRel());
 }
 
 void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
diff --git a/lib/Target/X86/MCTargetDesc/X86BaseInfo.h b/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
index 820b248..c41e9e7 100644
--- a/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
+++ b/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
@@ -164,7 +164,13 @@
     /// is some TLS offset from the picbase.
     ///
     /// This is the 32-bit TLS offset for Darwin TLS in PIC mode.
-    MO_TLVP_PIC_BASE
+    MO_TLVP_PIC_BASE,
+
+    /// MO_SECREL - On a symbol operand this indicates that the immediate is
+    /// the offset from beginning of section.
+    ///
+    /// This is the TLS offset for the COFF/Windows TLS mechanism.
+    MO_SECREL
   };
 
   enum {
diff --git a/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp b/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
index 7f24766..b0305b4 100644
--- a/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
@@ -222,6 +222,7 @@
 
   // If we have an immoffset, add it to the expression.
   if ((FixupKind == FK_Data_4 ||
+       FixupKind == FK_Data_8 ||
        FixupKind == MCFixupKind(X86::reloc_signed_4byte))) {
     GlobalOffsetTableExprKind Kind = StartsWithGlobalOffsetTable(Expr);
     if (Kind != GOT_None) {
@@ -230,6 +231,11 @@
       FixupKind = MCFixupKind(X86::reloc_global_offset_table);
       if (Kind == GOT_Normal)
         ImmOffset = CurByte;
+    } else if (Expr->getKind() == MCExpr::SymbolRef) {
+      const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Expr);
+      if (Ref->getKind() == MCSymbolRefExpr::VK_SECREL) {
+        FixupKind = MCFixupKind(FK_SecRel_4);
+      }
     }
   }
 
diff --git a/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp b/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp
index a337aaa..bc272ef 100644
--- a/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp
@@ -52,7 +52,7 @@
       return COFF::IMAGE_REL_AMD64_ADDR64;
     llvm_unreachable("unsupported relocation type");
   case FK_SecRel_4:
-    return Is64Bit ? COFF::IMAGE_REL_AMD64_SREL32 : COFF::IMAGE_REL_I386_SECREL;
+    return Is64Bit ? COFF::IMAGE_REL_AMD64_SECREL : COFF::IMAGE_REL_I386_SECREL;
   default:
     llvm_unreachable("unsupported relocation type");
   }
diff --git a/lib/Target/X86/X86AsmPrinter.cpp b/lib/Target/X86/X86AsmPrinter.cpp
index 5949064..c61ad72 100644
--- a/lib/Target/X86/X86AsmPrinter.cpp
+++ b/lib/Target/X86/X86AsmPrinter.cpp
@@ -199,6 +199,7 @@
   case X86II::MO_TLVP_PIC_BASE:
     O << "@TLVP" << '-' << *MF->getPICBaseSymbol();
     break;
+  case X86II::MO_SECREL:      O << "@SECREL";      break;
   }
 }
 
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 1343b57..6d29206 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -7355,6 +7355,68 @@
     unsigned Reg = Subtarget->is64Bit() ? X86::RAX : X86::EAX;
     return DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy(),
                               Chain.getValue(1));
+  } else if (Subtarget->isTargetWindows()) {
+    // Just use the implicit TLS architecture
+    // Need to generate someting similar to:
+    //   mov     rdx, qword [gs:abs 58H]; Load pointer to ThreadLocalStorage
+    //                                  ; from TEB
+    //   mov     ecx, dword [rel _tls_index]: Load index (from C runtime)
+    //   mov     rcx, qword [rdx+rcx*8]
+    //   mov     eax, .tls$:tlsvar
+    //   [rax+rcx] contains the address
+    // Windows 64bit: gs:0x58
+    // Windows 32bit: fs:__tls_array
+
+    // If GV is an alias then use the aliasee for determining
+    // thread-localness.
+    if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
+      GV = GA->resolveAliasedGlobal(false);
+    DebugLoc dl = GA->getDebugLoc();
+    SDValue Chain = DAG.getEntryNode();
+
+    // Get the Thread Pointer, which is %fs:__tls_array (32-bit) or
+    // %gs:0x58 (64-bit).
+    Value *Ptr = Constant::getNullValue(Subtarget->is64Bit()
+                                        ? Type::getInt8PtrTy(*DAG.getContext(),
+                                                             256)
+                                        : Type::getInt32PtrTy(*DAG.getContext(),
+                                                              257));
+
+    SDValue ThreadPointer = DAG.getLoad(getPointerTy(), dl, Chain,
+                                        Subtarget->is64Bit()
+                                        ? DAG.getIntPtrConstant(0x58)
+                                        : DAG.getExternalSymbol("_tls_array",
+                                                                getPointerTy()),
+                                        MachinePointerInfo(Ptr),
+                                        false, false, false, 0);
+
+    // Load the _tls_index variable
+    SDValue IDX = DAG.getExternalSymbol("_tls_index", getPointerTy());
+    if (Subtarget->is64Bit())
+      IDX = DAG.getExtLoad(ISD::ZEXTLOAD, dl, getPointerTy(), Chain,
+                           IDX, MachinePointerInfo(), MVT::i32,
+                           false, false, 0);
+    else
+      IDX = DAG.getLoad(getPointerTy(), dl, Chain, IDX, MachinePointerInfo(),
+                        false, false, false, 0);
+
+    SDValue Scale = DAG.getConstant(Log2_64_Ceil(TD->getPointerSize()),
+		                            getPointerTy());
+    IDX = DAG.getNode(ISD::SHL, dl, getPointerTy(), IDX, Scale);
+
+    SDValue res = DAG.getNode(ISD::ADD, dl, getPointerTy(), ThreadPointer, IDX);
+    res = DAG.getLoad(getPointerTy(), dl, Chain, res, MachinePointerInfo(),
+                      false, false, false, 0);
+
+    // Get the offset of start of .tls section
+    SDValue TGA = DAG.getTargetGlobalAddress(GA->getGlobal(), dl,
+                                             GA->getValueType(0),
+                                             GA->getOffset(), X86II::MO_SECREL);
+    SDValue Offset = DAG.getNode(X86ISD::Wrapper, dl, getPointerTy(), TGA);
+
+    // The address of the thread local variable is the add of the thread
+    // pointer with the offset of the variable.
+    return DAG.getNode(ISD::ADD, dl, getPointerTy(), res, Offset);
   }
 
   llvm_unreachable("TLS not implemented for this target.");
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp
index 89e1967..c2c4698 100644
--- a/lib/Target/X86/X86MCInstLower.cpp
+++ b/lib/Target/X86/X86MCInstLower.cpp
@@ -154,6 +154,7 @@
                                                            Ctx),
                                    Ctx);
     break;
+  case X86II::MO_SECREL:    RefKind = MCSymbolRefExpr::VK_SECREL; break;
   case X86II::MO_TLSGD:     RefKind = MCSymbolRefExpr::VK_TLSGD; break;
   case X86II::MO_GOTTPOFF:  RefKind = MCSymbolRefExpr::VK_GOTTPOFF; break;
   case X86II::MO_INDNTPOFF: RefKind = MCSymbolRefExpr::VK_INDNTPOFF; break;
@@ -230,7 +231,8 @@
 /// a short fixed-register form.
 static void SimplifyShortImmForm(MCInst &Inst, unsigned Opcode) {
   unsigned ImmOp = Inst.getNumOperands() - 1;
-  assert(Inst.getOperand(0).isReg() && Inst.getOperand(ImmOp).isImm() &&
+  assert(Inst.getOperand(0).isReg() &&
+         (Inst.getOperand(ImmOp).isImm() || Inst.getOperand(ImmOp).isExpr()) &&
          ((Inst.getNumOperands() == 3 && Inst.getOperand(1).isReg() &&
            Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) ||
           Inst.getNumOperands() == 2) && "Unexpected instruction!");
diff --git a/test/CodeGen/X86/tls1.ll b/test/CodeGen/X86/tls1.ll
index 0cae5c4..f39658e 100644
--- a/test/CodeGen/X86/tls1.ll
+++ b/test/CodeGen/X86/tls1.ll
@@ -1,7 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movl	%gs:i@NTPOFF, %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movl	%fs:i@TPOFF, %eax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = thread_local global i32 15
 
@@ -10,3 +10,11 @@
 	%tmp1 = load i32* @i
 	ret i32 %tmp1
 }
+; X32_LINUX: movl %gs:i@NTPOFF, %eax
+; X64_LINUX: movl %fs:i@TPOFF, %eax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: movl _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movabsq $i@SECREL, %rcx
+
diff --git a/test/CodeGen/X86/tls11.ll b/test/CodeGen/X86/tls11.ll
index 514a168..cc14826 100644
--- a/test/CodeGen/X86/tls11.ll
+++ b/test/CodeGen/X86/tls11.ll
@@ -1,7 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movzwl	%gs:i@NTPOFF, %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movzwl	%fs:i@TPOFF, %eax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = thread_local global i16 15
 
@@ -10,3 +10,12 @@
 	%tmp1 = load i16* @i
 	ret i16 %tmp1
 }
+; X32_LINUX: movzwl %gs:i@NTPOFF, %eax
+; X64_LINUX: movzwl %fs:i@TPOFF, %eax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: movzwl _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movq %gs:88, %rcx
+; X64_WIN: movabsq $i@SECREL, %rcx
+; X64_WIN: movzwl (%rax,%rcx), %eax
diff --git a/test/CodeGen/X86/tls12.ll b/test/CodeGen/X86/tls12.ll
index c29f6ad..3da789e 100644
--- a/test/CodeGen/X86/tls12.ll
+++ b/test/CodeGen/X86/tls12.ll
@@ -1,7 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movb	%gs:i@NTPOFF, %al} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movb	%fs:i@TPOFF, %al} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = thread_local global i8 15
 
@@ -10,3 +10,12 @@
 	%tmp1 = load i8* @i
 	ret i8 %tmp1
 }
+; X32_LINUX: movb %gs:i@NTPOFF, %al
+; X64_LINUX: movb %fs:i@TPOFF, %al
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: movb _i@SECREL(%eax), %al
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movq %gs:88, %rcx
+; X64_WIN: movabsq $i@SECREL, %rcx
+; X64_WIN: movb (%rax,%rcx), %al
diff --git a/test/CodeGen/X86/tls13.ll b/test/CodeGen/X86/tls13.ll
index 08778ec..0f6a98a 100644
--- a/test/CodeGen/X86/tls13.ll
+++ b/test/CodeGen/X86/tls13.ll
@@ -1,9 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movswl	%gs:i@NTPOFF, %eax} %t
-; RUN: grep {movzwl	%gs:j@NTPOFF, %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movswl	%fs:i@TPOFF, %edi} %t2
-; RUN: grep {movzwl	%fs:j@TPOFF, %edi} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = thread_local global i16 0
 @j = thread_local global i16 0
@@ -22,3 +20,14 @@
 declare void @g(i32)
 
 declare void @h(i32)
+
+; X32_LINUX: movswl %gs:i@NTPOFF, %eax
+; X32_LINUX: movzwl %gs:j@NTPOFF, %eax
+; X64_LINUX: movswl %fs:i@TPOFF, %edi
+; X64_LINUX: movzwl %fs:j@TPOFF, %edi
+; X32_WIN: movswl _i@SECREL(%esi), %eax
+; X32_WIN: movzwl _j@SECREL(%esi), %eax
+; X64_WIN: movabsq $i@SECREL, %rax
+; X64_WIN: movswl (%rsi,%rax), %ecx
+; X64_WIN: movabsq $j@SECREL, %rax
+; X64_WIN: movzwl (%rsi,%rax), %ecx
diff --git a/test/CodeGen/X86/tls14.ll b/test/CodeGen/X86/tls14.ll
index 88426dd..6462571 100644
--- a/test/CodeGen/X86/tls14.ll
+++ b/test/CodeGen/X86/tls14.ll
@@ -1,9 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movsbl	%gs:i@NTPOFF, %eax} %t
-; RUN: grep {movzbl	%gs:j@NTPOFF, %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movsbl	%fs:i@TPOFF, %edi} %t2
-; RUN: grep {movzbl	%fs:j@TPOFF, %edi} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = thread_local global i8 0
 @j = thread_local global i8 0
@@ -22,3 +20,14 @@
 declare void @g(i32)
 
 declare void @h(i32)
+
+; X32_LINUX: movsbl %gs:i@NTPOFF, %eax
+; X32_LINUX: movzbl %gs:j@NTPOFF, %eax
+; X64_LINUX: movsbl %fs:i@TPOFF, %edi
+; X64_LINUX: movzbl %fs:j@TPOFF, %edi
+; X32_WIN: movsbl _i@SECREL(%esi), %eax
+; X32_WIN: movzbl _j@SECREL(%esi), %eax
+; X64_WIN: movabsq $i@SECREL, %rax
+; X64_WIN: movsbl (%rsi,%rax), %ecx
+; X64_WIN: movabsq $j@SECREL, %rax
+; X64_WIN: movzbl (%rsi,%rax), %ecx
diff --git a/test/CodeGen/X86/tls2.ll b/test/CodeGen/X86/tls2.ll
index 5a94296..e882f53 100644
--- a/test/CodeGen/X86/tls2.ll
+++ b/test/CodeGen/X86/tls2.ll
@@ -1,9 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movl	%gs:0, %eax} %t
-; RUN: grep {leal	i@NTPOFF(%eax), %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movq	%fs:0, %rax} %t2
-; RUN: grep {leaq	i@TPOFF(%rax), %rax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = thread_local global i32 15
 
@@ -11,3 +9,13 @@
 entry:
 	ret i32* @i
 }
+; X32_LINUX: movl %gs:0, %eax
+; X32_LINUX: leal i@NTPOFF(%eax), %eax
+; X64_LINUX: movq %fs:0, %rax
+; X64_LINUX: leaq i@TPOFF(%rax), %rax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: leal _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movq %gs:88, %rcx
+; X64_WIN: addq $i@SECREL, %rax
diff --git a/test/CodeGen/X86/tls3.ll b/test/CodeGen/X86/tls3.ll
index 7327cc4..ee3f28f 100644
--- a/test/CodeGen/X86/tls3.ll
+++ b/test/CodeGen/X86/tls3.ll
@@ -1,9 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movl	i@INDNTPOFF, %eax} %t
-; RUN: grep {movl	%gs:(%eax), %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movq	i@GOTTPOFF(%rip), %rax} %t2
-; RUN: grep {movl	%fs:(%rax), %eax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = external thread_local global i32		; <i32*> [#uses=2]
 
@@ -12,3 +10,12 @@
 	%tmp1 = load i32* @i		; <i32> [#uses=1]
 	ret i32 %tmp1
 }
+; X32_LINUX: movl i@INDNTPOFF, %eax
+; X32_LINUX: movl %gs:(%eax), %eax
+; X64_LINUX: movq i@GOTTPOFF(%rip), %rax
+; X64_LINUX: movl %fs:(%rax), %eax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: movl _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movabsq $i@SECREL, %rcx
diff --git a/test/CodeGen/X86/tls4.ll b/test/CodeGen/X86/tls4.ll
index d2e40e3..2b53ec5 100644
--- a/test/CodeGen/X86/tls4.ll
+++ b/test/CodeGen/X86/tls4.ll
@@ -1,9 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movl	%gs:0, %eax} %t
-; RUN: grep {addl	i@INDNTPOFF, %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movq	%fs:0, %rax} %t2
-; RUN: grep {addq	i@GOTTPOFF(%rip), %rax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = external thread_local global i32		; <i32*> [#uses=2]
 
@@ -11,3 +9,13 @@
 entry:
 	ret i32* @i
 }
+; X32_LINUX: movl %gs:0, %eax
+; X32_LINUX: addl i@INDNTPOFF, %eax
+; X64_LINUX: movq %fs:0, %rax
+; X64_LINUX: addq i@GOTTPOFF(%rip), %rax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: leal _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movq %gs:88, %rcx
+; X64_WIN: addq $i@SECREL, %rax
diff --git a/test/CodeGen/X86/tls5.ll b/test/CodeGen/X86/tls5.ll
index 4d2cc02..3cc6dab 100644
--- a/test/CodeGen/X86/tls5.ll
+++ b/test/CodeGen/X86/tls5.ll
@@ -1,7 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movl	%gs:i@NTPOFF, %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movl	%fs:i@TPOFF, %eax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
 
 @i = internal thread_local global i32 15
 
@@ -10,3 +10,10 @@
 	%tmp1 = load i32* @i
 	ret i32 %tmp1
 }
+; X32_LINUX: movl %gs:i@NTPOFF, %eax
+; X64_LINUX: movl %fs:i@TPOFF, %eax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: movl _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movabsq $i@SECREL, %rcx
diff --git a/test/CodeGen/X86/tls6.ll b/test/CodeGen/X86/tls6.ll
index 505106e..c98ad7c 100644
--- a/test/CodeGen/X86/tls6.ll
+++ b/test/CodeGen/X86/tls6.ll
@@ -1,9 +1,7 @@
-; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movl	%gs:0, %eax} %t
-; RUN: grep {leal	i@NTPOFF(%eax), %eax} %t
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu > %t2
-; RUN: grep {movq	%fs:0, %rax} %t2
-; RUN: grep {leaq	i@TPOFF(%rax), %rax} %t2
+; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32_LINUX %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64_LINUX %s
+; RUN: llc < %s -march=x86 -mtriple=x86-pc-win32 | FileCheck -check-prefix=X32_WIN %s
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=X64_WIN %s
 
 @i = internal thread_local global i32 15
 
@@ -11,3 +9,13 @@
 entry:
 	ret i32* @i
 }
+; X32_LINUX: movl %gs:0, %eax
+; X32_LINUX: leal i@NTPOFF(%eax), %eax
+; X64_LINUX: movq %fs:0, %rax
+; X64_LINUX: leaq i@TPOFF(%rax), %rax
+; X32_WIN: movl __tls_index, %eax
+; X32_WIN: movl %fs:__tls_array, %ecx
+; X32_WIN: leal _i@SECREL(%eax), %eax
+; X64_WIN: movl _tls_index(%rip), %eax
+; X64_WIN: movq %gs:88, %rcx
+; X64_WIN: addq $i@SECREL, %rax