Goodbye TargetAsmInfo. This eliminate last bit of CodeGen and Target in llvm-mc.

There is still a bit more refactoring left to do in Targets. But we are now very
close to fixing all the layering issues in MC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135611 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 6857bce..1297e10 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -33,7 +33,6 @@
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetLowering.h"
diff --git a/lib/CodeGen/ELFWriter.cpp b/lib/CodeGen/ELFWriter.cpp
index 1b8fb0a..f2c2185 100644
--- a/lib/CodeGen/ELFWriter.cpp
+++ b/lib/CodeGen/ELFWriter.cpp
@@ -45,7 +45,6 @@
 #include "llvm/MC/MCSectionELF.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetELFWriterInfo.h"
 #include "llvm/Target/TargetLowering.h"
@@ -67,8 +66,7 @@
 ELFWriter::ELFWriter(raw_ostream &o, TargetMachine &tm)
   : MachineFunctionPass(ID), O(o), TM(tm),
     OutContext(*new MCContext(*TM.getMCAsmInfo(), *TM.getRegisterInfo(),
-                              &TM.getTargetLowering()->getObjFileLowering(),
-                              new TargetAsmInfo(tm))),
+                              &TM.getTargetLowering()->getObjFileLowering())),
     TLOF(TM.getTargetLowering()->getObjFileLowering()),
     is64Bit(TM.getTargetData()->getPointerSizeInBits() == 64),
     isLittleEndian(TM.getTargetData()->isLittleEndian()),
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index de2c8e4..7c62bfd 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -27,9 +27,10 @@
 #include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetRegistry.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
@@ -353,11 +354,9 @@
 
   // Install a MachineModuleInfo class, which is an immutable pass that holds
   // all the per-module stuff we're generating, including MCContext.
-  TargetAsmInfo *TAI = new TargetAsmInfo(*this);
   MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(),
                                                  *getRegisterInfo(),
-                                     &getTargetLowering()->getObjFileLowering(),
-                                                 TAI);
+                                     &getTargetLowering()->getObjFileLowering());
   PM.add(MMI);
   OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref.
 
diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp
index c9f3ec3..811b0cd 100644
--- a/lib/CodeGen/MachineModuleInfo.cpp
+++ b/lib/CodeGen/MachineModuleInfo.cpp
@@ -17,7 +17,6 @@
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/ADT/PointerUnion.h"
@@ -254,9 +253,8 @@
 
 MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
                                      const MCRegisterInfo &MRI,
-                                     const MCObjectFileInfo *MOFI,
-                                     const TargetAsmInfo *TAI)
-  : ImmutablePass(ID), Context(MAI, MRI, MOFI, TAI),
+                                     const MCObjectFileInfo *MOFI)
+  : ImmutablePass(ID), Context(MAI, MRI, MOFI),
     ObjFileMMI(0), CompactUnwindEncoding(0), CurCallSite(0), CallsEHReturn(0),
     CallsUnwindInit(0), DbgInfoAvailable(false),
     CallsExternalVAFunctionWithFloatingPointArguments(false) {
@@ -269,7 +267,7 @@
 
 MachineModuleInfo::MachineModuleInfo()
   : ImmutablePass(ID),
-    Context(*(MCAsmInfo*)0, *(MCRegisterInfo*)0, (MCObjectFileInfo*)0, NULL) {
+    Context(*(MCAsmInfo*)0, *(MCRegisterInfo*)0, (MCObjectFileInfo*)0) {
   assert(0 && "This MachineModuleInfo constructor should never be called, MMI "
          "should always be explicitly constructed by LLVMTargetMachine");
   abort();
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index c6185d8..fb87154 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -543,22 +543,6 @@
   return SSym;
 }
 
-unsigned TargetLoweringObjectFileMachO::getPersonalityEncoding() const {
-  return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-}
-
-unsigned TargetLoweringObjectFileMachO::getLSDAEncoding() const {
-  return DW_EH_PE_pcrel;
-}
-
-unsigned TargetLoweringObjectFileMachO::getFDEEncoding(bool CFI) const {
-  return DW_EH_PE_pcrel;
-}
-
-unsigned TargetLoweringObjectFileMachO::getTTypeEncoding() const {
-  return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-}
-
 //===----------------------------------------------------------------------===//
 //                                  COFF
 //===----------------------------------------------------------------------===//
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 802f19c..0777f2c 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -28,7 +28,6 @@
 #include "llvm/Support/Format.h"
 #include "llvm/Support/FormattedStream.h"
 #include "llvm/Target/TargetAsmBackend.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
 #include <cctype>
 using namespace llvm;
diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index 3ba5416..4ef2cdc 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -17,7 +17,6 @@
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/MC/MCLabel.h"
 #include "llvm/MC/MCDwarf.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/ELF.h"
@@ -29,8 +28,8 @@
 
 
 MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri,
-                     const MCObjectFileInfo *mofi, const TargetAsmInfo *tai) :
-  MAI(mai), MRI(mri), MOFI(mofi), TAI(tai),
+                     const MCObjectFileInfo *mofi) :
+  MAI(mai), MRI(mri), MOFI(mofi),
   Allocator(), Symbols(Allocator), UsedNames(Allocator),
   NextUniqueID(0),
   CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0),
@@ -57,8 +56,6 @@
 
   // If the stream for the .secure_log_unique directive was created free it.
   delete (raw_ostream*)SecureLog;
-
-  delete TAI;
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index a2aaced..4c92c57 100644
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -17,8 +17,6 @@
 #include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetAsmInfo.h"  // FIXME.
-#include "llvm/Target/TargetMachine.h"  // FIXME.
 #include "llvm/Target/TargetSelect.h"
 #include "llvm/Support/MemoryObject.h"
 
@@ -39,8 +37,6 @@
                                       LLVMSymbolLookupCallback SymbolLookUp) {
   // Initialize targets and assembly printers/parsers.
   llvm::InitializeAllTargetInfos();
-  // FIXME: We shouldn't need to initialize the Target(Machine)s.
-  llvm::InitializeAllTargets();
   llvm::InitializeAllMCAsmInfos();
   llvm::InitializeAllMCCodeGenInfos();
   llvm::InitializeAllMCRegisterInfos();
@@ -64,19 +60,8 @@
   std::string FeaturesStr;
   std::string CPU;
 
-  // FIXME: We shouldn't need to do this (and link in codegen).
-  //        When we split this out, we should do it in a way that makes
-  //        it straightforward to switch subtargets on the fly.
-  TargetMachine *TM = TheTarget->createTargetMachine(TripleName, CPU,
-                                                     FeaturesStr);
-  assert(TM && "Unable to create target machine!");
-
-  // Get the target assembler info needed to setup the context.
-  const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
-  assert(tai && "Unable to create target assembler!");
-
   // Set up the MCContext for creating symbols and MCExpr's.
-  MCContext *Ctx = new MCContext(*MAI, *MRI, 0, tai);
+  MCContext *Ctx = new MCContext(*MAI, *MRI, 0);
   assert(Ctx && "Unable to create MCContext!");
 
   // Set up disassembler.
@@ -92,7 +77,7 @@
 
   LLVMDisasmContext *DC = new LLVMDisasmContext(TripleName, DisInfo, TagType,
                                                 GetOpInfo, SymbolLookUp,
-                                                TheTarget, MAI, MRI, TM, tai,
+                                                TheTarget, MAI, MRI,
                                                 Ctx, DisAsm, IP);
   assert(DC && "Allocation failure!");
   return DC;
diff --git a/lib/MC/MCDisassembler/Disassembler.h b/lib/MC/MCDisassembler/Disassembler.h
index 8740c5c..5a5abd2 100644
--- a/lib/MC/MCDisassembler/Disassembler.h
+++ b/lib/MC/MCDisassembler/Disassembler.h
@@ -22,14 +22,12 @@
 #include "llvm/ADT/OwningPtr.h"
 
 namespace llvm {
-class TargetAsmInfo;
 class MCContext;
 class MCAsmInfo;
 class MCDisassembler;
 class MCInstPrinter; 
 class MCRegisterInfo;
 class Target;
-class TargetMachine;
 
 //
 // This is the disassembler context returned by LLVMCreateDisasm().
@@ -61,12 +59,6 @@
   llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
   // The register information for the target architecture.
   llvm::OwningPtr<const llvm::MCRegisterInfo> MRI;
-  // The target machine instance.
-  llvm::OwningPtr<llvm::TargetMachine> TM;
-  // The disassembler for the target architecture.
-  // FIXME: using llvm::OwningPtr<const llvm::TargetAsmInfo> causes a malloc
-  //        error when this LLVMDisasmContext is deleted.
-  const TargetAsmInfo *Tai;
   // The assembly context for creating symbols and MCExprs.
   llvm::OwningPtr<const llvm::MCContext> Ctx;
   // The disassembler for the target architecture.
@@ -80,12 +72,10 @@
                     LLVMSymbolLookupCallback symbolLookUp,
                     const Target *theTarget, const MCAsmInfo *mAI,
                     const MCRegisterInfo *mRI,
-                    llvm::TargetMachine *tM, const TargetAsmInfo *tai,
                     llvm::MCContext *ctx, const MCDisassembler *disAsm,
                     MCInstPrinter *iP) : TripleName(tripleName),
                     DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
-                    SymbolLookUp(symbolLookUp), TheTarget(theTarget), Tai(tai) {
-    TM.reset(tM);
+                    SymbolLookUp(symbolLookUp), TheTarget(theTarget) {
     MAI.reset(mAI);
     MRI.reset(mRI);
     Ctx.reset(ctx);
diff --git a/lib/MC/MCDisassembler/EDDisassembler.cpp b/lib/MC/MCDisassembler/EDDisassembler.cpp
index 048f7e5..cae5416 100644
--- a/lib/MC/MCDisassembler/EDDisassembler.cpp
+++ b/lib/MC/MCDisassembler/EDDisassembler.cpp
@@ -377,7 +377,7 @@
   SourceMgr sourceMgr;
   sourceMgr.setDiagHandler(diag_handler, static_cast<void*>(this));
   sourceMgr.AddNewSourceBuffer(buf, SMLoc()); // ownership of buf handed over
-  MCContext context(*AsmInfo, *MRI, NULL, NULL);
+  MCContext context(*AsmInfo, *MRI, NULL);
   OwningPtr<MCStreamer> streamer(createNullStreamer(context));
   OwningPtr<MCAsmParser> genericParser(createMCAsmParser(*Tgt, sourceMgr,
                                                          context, *streamer,
diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index 9db7518..a200128 100644
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -19,7 +19,6 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/ADT/FoldingSet.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringExtras.h"
@@ -691,7 +690,6 @@
                                          const MCDwarfFrameInfo &Frame) {
   MCContext &Context = Streamer.getContext();
   const MCObjectFileInfo *MOFI = Context.getObjectFileInfo();
-  const TargetAsmInfo &TAI = Context.getTargetAsmInfo();
   bool VerboseAsm = Streamer.isVerboseAsm();
 
   // range-start range-length  compact-unwind-enc personality-func   lsda
@@ -726,7 +724,7 @@
   Streamer.SwitchSection(MOFI->getCompactUnwindSection());
 
   // Range Start
-  unsigned FDEEncoding = TAI.getFDEEncoding(UsingCFI);
+  unsigned FDEEncoding = MOFI->getFDEEncoding(UsingCFI);
   unsigned Size = getSizeForEncoding(Streamer, FDEEncoding);
   if (VerboseAsm) Streamer.AddComment("Range Start");
   Streamer.EmitSymbolValue(Frame.Function, Size);
@@ -771,7 +769,6 @@
   MCContext &context = streamer.getContext();
   const MCRegisterInfo &MRI = context.getRegisterInfo();
   const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
-  const TargetAsmInfo &TAI = context.getTargetAsmInfo();
   bool verboseAsm = streamer.isVerboseAsm();
 
   MCSymbol *sectionStart;
@@ -858,7 +855,7 @@
       EmitEncodingByte(streamer, lsdaEncoding, "LSDA Encoding");
 
     // Encoding of the FDE pointers
-    EmitEncodingByte(streamer, TAI.getFDEEncoding(UsingCFI),
+    EmitEncodingByte(streamer, MOFI->getFDEEncoding(UsingCFI),
                      "FDE Encoding");
   }
 
@@ -895,7 +892,6 @@
   MCSymbol *fdeStart = context.CreateTempSymbol();
   MCSymbol *fdeEnd = context.CreateTempSymbol();
   const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
-  const TargetAsmInfo &TAI = context.getTargetAsmInfo();
   bool verboseAsm = streamer.isVerboseAsm();
 
   if (!MOFI->isFunctionEHFrameSymbolPrivate() && IsEH) {
@@ -927,7 +923,7 @@
     streamer.EmitSymbolValue(&cieStart, 4);
   }
 
-  unsigned fdeEncoding = TAI.getFDEEncoding(UsingCFI);
+  unsigned fdeEncoding = MOFI->getFDEEncoding(UsingCFI);
   unsigned size = getSizeForEncoding(streamer, fdeEncoding);
 
   // PC Begin
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 5540b55..0b0a3e0 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -21,6 +21,12 @@
   IsFunctionEHFrameSymbolPrivate = false;
   SupportsWeakOmittedEHFrame = false;
 
+  PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
+    | dwarf::DW_EH_PE_sdata4;
+  LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
+  TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+    dwarf::DW_EH_PE_sdata4;
+
   // .comm doesn't support alignment before Leopard.
   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
     CommDirectiveSupportsAlignment = false;
@@ -199,6 +205,45 @@
 }
 
 void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
+  if (T.getArch() == Triple::x86) {
+    PersonalityEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+    LSDAEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+    FDEEncoding = FDECFIEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+    TTypeEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+  } else if (T.getArch() == Triple::x86_64) {
+    FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+
+    if (RelocM == Reloc::PIC_) {
+      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
+         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+      LSDAEncoding = dwarf::DW_EH_PE_pcrel |
+        (CMModel == CodeModel::Small
+         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+      FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
+         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+    } else {
+      PersonalityEncoding =
+        (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
+        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+      LSDAEncoding = (CMModel == CodeModel::Small)
+        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+      FDEEncoding = dwarf::DW_EH_PE_udata4;
+      TTypeEncoding = (CMModel == CodeModel::Small)
+        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+    }
+  }
+
   // ELF
   BSSSection =
     Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
@@ -446,15 +491,21 @@
 }
 
 void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
+                                            CodeModel::Model cm,
                                             MCContext &ctx) {
   RelocM = relocm;
+  CMModel = cm;
   Ctx = &ctx;
 
   // Common.
   CommDirectiveSupportsAlignment = true;
   SupportsWeakOmittedEHFrame = true;
   IsFunctionEHFrameSymbolPrivate = true;
-  EHFrameSection = 0;
+
+  PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
+    TTypeEncoding = dwarf::DW_EH_PE_absptr;
+
+  EHFrameSection = 0; // Created on demand.
 
   Triple T(TT);
   Triple::ArchType Arch = T.getArch();
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 2cf376e..049b432 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -33,7 +33,6 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetAsmParser.h"
 #include <cctype>
 #include <vector>
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index b772947..3f43474 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1676,7 +1676,7 @@
 #endif
   TAsm = new CBEMCAsmInfo();
   MRI  = new MCRegisterInfo();
-  TCtx = new MCContext(*TAsm, *MRI, NULL, NULL);
+  TCtx = new MCContext(*TAsm, *MRI, NULL);
   Mang = new Mangler(*TCtx, *TD);
 
   // Keep track of which functions are static ctors/dtors so they can have
diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
deleted file mode 100644
index 94f56f6..0000000
--- a/lib/Target/TargetAsmInfo.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-//===-- llvm/Target/TargetAsmInfo.cpp - Target Assembly Info --------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetLowering.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
-#include "llvm/Target/TargetMachine.h"
-using namespace llvm;
-
-TargetAsmInfo::TargetAsmInfo(const TargetMachine &TM) {
-  TLOF = &TM.getTargetLowering()->getObjFileLowering();
-}
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index 2fb744f..56b7b69 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -41,7 +41,8 @@
 void TargetLoweringObjectFile::Initialize(MCContext &ctx,
                                           const TargetMachine &TM) {
   Ctx = &ctx;
-  InitMCObjectFileInfo(TM.getTargetTriple(), TM.getRelocationModel(), *Ctx);
+  InitMCObjectFileInfo(TM.getTargetTriple(),
+                       TM.getRelocationModel(), TM.getCodeModel(), *Ctx);
 }
   
 TargetLoweringObjectFile::~TargetLoweringObjectFile() {
@@ -322,20 +323,3 @@
   }
   }
 }
-
-unsigned TargetLoweringObjectFile::getPersonalityEncoding() const {
-  return dwarf::DW_EH_PE_absptr;
-}
-
-unsigned TargetLoweringObjectFile::getLSDAEncoding() const {
-  return dwarf::DW_EH_PE_absptr;
-}
-
-unsigned TargetLoweringObjectFile::getFDEEncoding(bool CFI) const {
-  return dwarf::DW_EH_PE_absptr;
-}
-
-unsigned TargetLoweringObjectFile::getTTypeEncoding() const {
-  return dwarf::DW_EH_PE_absptr;
-}
-
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 6bf33c2..6a3a9cd 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -197,11 +197,8 @@
     return new TargetLoweringObjectFileMachO();
   }
 
-  if (Subtarget->isTargetELF()) {
-    if (is64Bit)
-      return new X8664_ELFTargetObjectFile(TM);
-    return new X8632_ELFTargetObjectFile(TM);
-  }
+  if (Subtarget->isTargetELF())
+    return new TargetLoweringObjectFileELF();
   if (Subtarget->isTargetCOFF() && !Subtarget->isTargetEnvMacho())
     return new TargetLoweringObjectFileCOFF();
   llvm_unreachable("unknown subtarget type");
diff --git a/lib/Target/X86/X86TargetObjectFile.cpp b/lib/Target/X86/X86TargetObjectFile.cpp
index 1231798..991f322 100644
--- a/lib/Target/X86/X86TargetObjectFile.cpp
+++ b/lib/Target/X86/X86TargetObjectFile.cpp
@@ -43,79 +43,3 @@
                         MachineModuleInfo *MMI) const {
   return Mang->getSymbol(GV);
 }
-
-unsigned X8632_ELFTargetObjectFile::getPersonalityEncoding() const {
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-  else
-    return DW_EH_PE_absptr;
-}
-
-unsigned X8632_ELFTargetObjectFile::getLSDAEncoding() const {
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-  else
-    return DW_EH_PE_absptr;
-}
-
-unsigned X8632_ELFTargetObjectFile::getFDEEncoding(bool FDE) const {
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-  else
-    return DW_EH_PE_absptr;
-}
-
-unsigned X8632_ELFTargetObjectFile::getTTypeEncoding() const {
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-  else
-    return DW_EH_PE_absptr;
-}
-
-unsigned X8664_ELFTargetObjectFile::getPersonalityEncoding() const {
-  CodeModel::Model Model = TM.getCodeModel();
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_indirect | DW_EH_PE_pcrel | (Model == CodeModel::Small ||
-                                                 Model == CodeModel::Medium ?
-                                            DW_EH_PE_sdata4 : DW_EH_PE_sdata8);
-
-  if (Model == CodeModel::Small || Model == CodeModel::Medium)
-    return DW_EH_PE_udata4;
-
-  return DW_EH_PE_absptr;
-}
-
-unsigned X8664_ELFTargetObjectFile::getLSDAEncoding() const {
-  CodeModel::Model Model = TM.getCodeModel();
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_pcrel | (Model == CodeModel::Small ?
-                             DW_EH_PE_sdata4 : DW_EH_PE_sdata8);
-
-  if (Model == CodeModel::Small)
-    return DW_EH_PE_udata4;
-
-  return DW_EH_PE_absptr;
-}
-
-unsigned X8664_ELFTargetObjectFile::getFDEEncoding(bool CFI) const {
-  if (CFI)
-    return DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-
-  return DW_EH_PE_udata4;
-}
-
-unsigned X8664_ELFTargetObjectFile::getTTypeEncoding() const {
-  CodeModel::Model Model = TM.getCodeModel();
-  if (TM.getRelocationModel() == Reloc::PIC_)
-    return DW_EH_PE_indirect | DW_EH_PE_pcrel | (Model == CodeModel::Small ||
-                                                 Model == CodeModel::Medium ?
-                                            DW_EH_PE_sdata4 : DW_EH_PE_sdata8);
-
-  if (Model == CodeModel::Small)
-    return DW_EH_PE_udata4;
-
-  return DW_EH_PE_absptr;
-}
diff --git a/lib/Target/X86/X86TargetObjectFile.h b/lib/Target/X86/X86TargetObjectFile.h
index e21b5bf..d7adf27 100644
--- a/lib/Target/X86/X86TargetObjectFile.h
+++ b/lib/Target/X86/X86TargetObjectFile.h
@@ -33,28 +33,6 @@
                             MachineModuleInfo *MMI) const;
   };
 
-  class X8632_ELFTargetObjectFile : public TargetLoweringObjectFileELF {
-    const X86TargetMachine &TM;
-  public:
-    X8632_ELFTargetObjectFile(const X86TargetMachine &tm)
-      :TM(tm) { }
-    virtual unsigned getPersonalityEncoding() const;
-    virtual unsigned getLSDAEncoding() const;
-    virtual unsigned getFDEEncoding(bool CFI) const;
-    virtual unsigned getTTypeEncoding() const;
-  };
-
-  class X8664_ELFTargetObjectFile : public TargetLoweringObjectFileELF {
-    const X86TargetMachine &TM;
-  public:
-    X8664_ELFTargetObjectFile(const X86TargetMachine &tm)
-      :TM(tm) { }
-    virtual unsigned getPersonalityEncoding() const;
-    virtual unsigned getLSDAEncoding() const;
-    virtual unsigned getFDEEncoding(bool CFI) const;
-    virtual unsigned getTTypeEncoding() const;
-  };
-
 } // end namespace llvm
 
 #endif