From: Aditya Nandakumar <aditya_nandakumar@apple.com>
Date: Thu, 13 Nov 2014 09:26:31 +0000 (+0000)
Subject: This patch changes the ownership of TLOF from TargetLoweringBase to TargetMachine... 
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a27193297f76d9847ec6c62042444a0c69b7dac7;p=platform%2Fupstream%2Fllvm.git

This patch changes the ownership of TLOF from TargetLoweringBase to TargetMachine so that different subtargets could share the TLOF effectively

llvm-svn: 221878
---

diff --git a/llvm/include/llvm/Target/TargetLowering.h b/llvm/include/llvm/Target/TargetLowering.h
index ffb44b3..09b4662 100644
--- a/llvm/include/llvm/Target/TargetLowering.h
+++ b/llvm/include/llvm/Target/TargetLowering.h
@@ -137,10 +137,10 @@ public:
     llvm_unreachable("Invalid content kind");
   }
 
-  /// NOTE: The constructor takes ownership of TLOF.
+  /// NOTE: The TargetMachine owns TLOF.
   explicit TargetLoweringBase(const TargetMachine &TM,
                               const TargetLoweringObjectFile *TLOF);
-  virtual ~TargetLoweringBase();
+  virtual ~TargetLoweringBase() {}
 
 protected:
   /// \brief Initialize all of the actions to default values.
diff --git a/llvm/include/llvm/Target/TargetMachine.h b/llvm/include/llvm/Target/TargetMachine.h
index 7728f20..a4f95c0 100644
--- a/llvm/include/llvm/Target/TargetMachine.h
+++ b/llvm/include/llvm/Target/TargetMachine.h
@@ -44,6 +44,7 @@ class ScalarTargetTransformInfo;
 class VectorTargetTransformInfo;
 class formatted_raw_ostream;
 class raw_ostream;
+class TargetLoweringObjectFile;
 
 // The old pass manager infrastructure is hidden in a legacy namespace now.
 namespace legacy {
@@ -102,6 +103,9 @@ public:
   virtual const TargetSubtargetInfo *getSubtargetImpl(const Function &) const {
     return getSubtargetImpl();
   }
+  virtual TargetLoweringObjectFile *getObjFileLowering() const {
+    return nullptr;
+  }
 
   /// getSubtarget - This method returns a pointer to the specified type of
   /// TargetSubtargetInfo.  In debug builds, it verifies that the object being
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index d0acf0e..6d499e3 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -737,10 +737,6 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm,
   InitLibcallCallingConvs(LibcallCallingConvs);
 }
 
-TargetLoweringBase::~TargetLoweringBase() {
-  delete &TLOF;
-}
-
 void TargetLoweringBase::initActions() {
   // All operations default to being supported.
   memset(OpActions, 0, sizeof(OpActions));
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index f868e15..b600cb0 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -66,18 +66,9 @@ EnableAArch64SlrGeneration("aarch64-shift-insert-generation", cl::Hidden,
                          cl::desc("Allow AArch64 SLI/SRI formation"),
                          cl::init(false));
 
-//===----------------------------------------------------------------------===//
-// AArch64 Lowering public interface.
-//===----------------------------------------------------------------------===//
-static TargetLoweringObjectFile *createTLOF(const Triple &TT) {
-  if (TT.isOSBinFormatMachO())
-    return new AArch64_MachoTargetObjectFile();
-
-  return new AArch64_ELFTargetObjectFile();
-}
 
 AArch64TargetLowering::AArch64TargetLowering(const TargetMachine &TM)
-    : TargetLowering(TM, createTLOF(Triple(TM.getTargetTriple()))) {
+    : TargetLowering(TM, TM.getObjFileLowering()) {
   Subtarget = &TM.getSubtarget<AArch64Subtarget>();
 
   // AArch64 doesn't have comparisons which set GPRs or setcc instructions, so
diff --git a/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp b/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
index 0351284..fa17c06 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
@@ -12,6 +12,7 @@
 
 #include "AArch64.h"
 #include "AArch64TargetMachine.h"
+#include "AArch64TargetObjectFile.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/RegAllocRegistry.h"
 #include "llvm/IR/Function.h"
@@ -87,6 +88,16 @@ extern "C" void LLVMInitializeAArch64Target() {
   RegisterTargetMachine<AArch64leTargetMachine> Z(TheARM64Target);
 }
 
+//===----------------------------------------------------------------------===//
+// AArch64 Lowering public interface.
+//===----------------------------------------------------------------------===//
+static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {
+  if (TT.isOSBinFormatMachO())
+    return make_unique<AArch64_MachoTargetObjectFile>();
+
+  return make_unique<AArch64_ELFTargetObjectFile>();
+}
+
 /// TargetMachine ctor - Create an AArch64 architecture model.
 ///
 AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT,
@@ -96,6 +107,7 @@ AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT,
                                            CodeGenOpt::Level OL,
                                            bool LittleEndian)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(createTLOF(Triple(getTargetTriple()))),
       Subtarget(TT, CPU, FS, *this, LittleEndian), isLittle(LittleEndian) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/AArch64/AArch64TargetMachine.h b/llvm/lib/Target/AArch64/AArch64TargetMachine.h
index 3e571c9..c993999 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetMachine.h
+++ b/llvm/lib/Target/AArch64/AArch64TargetMachine.h
@@ -23,6 +23,7 @@ namespace llvm {
 
 class AArch64TargetMachine : public LLVMTargetMachine {
 protected:
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   AArch64Subtarget Subtarget;
   mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
 
@@ -43,6 +44,10 @@ public:
   /// \brief Register AArch64 analysis passes with a pass manager.
   void addAnalysisPasses(PassManagerBase &PM) override;
 
+  TargetLoweringObjectFile* getObjFileLowering() const override {
+    return TLOF.get();
+  }
+
 private:
   bool isLittle;
 };
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index fd46a01..337ceef 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -156,16 +156,8 @@ void ARMTargetLowering::addQRTypeForNEON(MVT VT) {
   addTypeForNEON(VT, MVT::v2f64, MVT::v4i32);
 }
 
-static TargetLoweringObjectFile *createTLOF(const Triple &TT) {
-  if (TT.isOSBinFormatMachO())
-    return new TargetLoweringObjectFileMachO();
-  if (TT.isOSWindows())
-    return new TargetLoweringObjectFileCOFF();
-  return new ARMElfTargetObjectFile();
-}
-
 ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM)
-    : TargetLowering(TM, createTLOF(Triple(TM.getTargetTriple()))) {
+    : TargetLowering(TM, TM.getObjFileLowering()) {
   Subtarget = &TM.getSubtarget<ARMSubtarget>();
   RegInfo = TM.getSubtargetImpl()->getRegisterInfo();
   Itins = TM.getSubtargetImpl()->getInstrItineraryData();
diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.cpp b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
index c44d543..5164a03 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -13,6 +13,7 @@
 #include "ARM.h"
 #include "ARMTargetMachine.h"
 #include "ARMFrameLowering.h"
+#include "ARMTargetObjectFile.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/MC/MCAsmInfo.h"
@@ -43,6 +44,14 @@ extern "C" void LLVMInitializeARMTarget() {
   RegisterTargetMachine<ThumbBETargetMachine> B(TheThumbBETarget);
 }
 
+static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {
+  if (TT.isOSBinFormatMachO())
+    return make_unique<TargetLoweringObjectFileMachO>();
+  if (TT.isOSWindows())
+    return make_unique<TargetLoweringObjectFileCOFF>();
+  return make_unique<ARMElfTargetObjectFile>();
+}
+
 /// TargetMachine ctor - Create an ARM architecture model.
 ///
 ARMBaseTargetMachine::ARMBaseTargetMachine(const Target &T, StringRef TT,
@@ -51,6 +60,7 @@ ARMBaseTargetMachine::ARMBaseTargetMachine(const Target &T, StringRef TT,
                                            Reloc::Model RM, CodeModel::Model CM,
                                            CodeGenOpt::Level OL, bool isLittle)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(createTLOF(Triple(getTargetTriple()))),
       Subtarget(TT, CPU, FS, *this, isLittle), isLittle(isLittle) {
 
   // Default to triple-appropriate float ABI
diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.h b/llvm/lib/Target/ARM/ARMTargetMachine.h
index d2eb885..2842bc8 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.h
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.h
@@ -23,6 +23,7 @@ namespace llvm {
 
 class ARMBaseTargetMachine : public LLVMTargetMachine {
 protected:
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   ARMSubtarget        Subtarget;
   bool isLittle;
   mutable StringMap<std::unique_ptr<ARMSubtarget>> SubtargetMap;
@@ -43,6 +44,10 @@ public:
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 /// ARMTargetMachine - ARM target machine.
diff --git a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
index ac29712..03791a1 100644
--- a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
@@ -1043,7 +1043,7 @@ HexagonTargetLowering::LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const {
 //===----------------------------------------------------------------------===//
 
 HexagonTargetLowering::HexagonTargetLowering(const TargetMachine &targetmachine)
-    : TargetLowering(targetmachine, new HexagonTargetObjectFile()),
+    : TargetLowering(targetmachine, targetmachine.getObjFileLowering()),
       TM(targetmachine) {
 
   const HexagonSubtarget &Subtarget = TM.getSubtarget<HexagonSubtarget>();
diff --git a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
index 7831410..9a35e1f 100644
--- a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -70,6 +70,7 @@ HexagonTargetMachine::HexagonTargetMachine(const Target &T, StringRef TT,
                                            Reloc::Model RM, CodeModel::Model CM,
                                            CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(make_unique<HexagonTargetObjectFile>()),
       Subtarget(TT, CPU, FS, *this) {
     initAsmInfo();
 }
diff --git a/llvm/lib/Target/Hexagon/HexagonTargetMachine.h b/llvm/lib/Target/Hexagon/HexagonTargetMachine.h
index d917d5b..9f3a20e 100644
--- a/llvm/lib/Target/Hexagon/HexagonTargetMachine.h
+++ b/llvm/lib/Target/Hexagon/HexagonTargetMachine.h
@@ -23,6 +23,7 @@ namespace llvm {
 class Module;
 
 class HexagonTargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   HexagonSubtarget Subtarget;
 
 public:
@@ -37,6 +38,10 @@ public:
   static unsigned getModuleMatchQuality(const Module &M);
 
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 extern bool flag_aligned_memcpy;
diff --git a/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp b/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
index 0c7bf58..216ffb1 100644
--- a/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -58,7 +58,7 @@ HWMultMode("msp430-hwmult-mode", cl::Hidden,
              clEnumValEnd));
 
 MSP430TargetLowering::MSP430TargetLowering(const TargetMachine &TM)
-    : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
+    : TargetLowering(TM, TM.getObjFileLowering()) {
 
   // Set up the register classes.
   addRegisterClass(MVT::i8,  &MSP430::GR8RegClass);
diff --git a/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp b/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp
index 5ca36f2..ef75818 100644
--- a/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp
+++ b/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "MSP430TargetMachine.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "MSP430.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/MC/MCAsmInfo.h"
@@ -30,6 +31,7 @@ MSP430TargetMachine::MSP430TargetMachine(const Target &T, StringRef TT,
                                          Reloc::Model RM, CodeModel::Model CM,
                                          CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(make_unique<TargetLoweringObjectFileELF>()),
       Subtarget(TT, CPU, FS, *this) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/MSP430/MSP430TargetMachine.h b/llvm/lib/Target/MSP430/MSP430TargetMachine.h
index 5c73c83..abe0643 100644
--- a/llvm/lib/Target/MSP430/MSP430TargetMachine.h
+++ b/llvm/lib/Target/MSP430/MSP430TargetMachine.h
@@ -24,6 +24,7 @@ namespace llvm {
 /// MSP430TargetMachine
 ///
 class MSP430TargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   MSP430Subtarget        Subtarget;
 
 public:
@@ -36,6 +37,10 @@ public:
     return &Subtarget;
   }
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 }; // MSP430TargetMachine.
 
 } // end namespace llvm
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp
index 99d2601..4fb2f78 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp
@@ -203,7 +203,7 @@ const char *MipsTargetLowering::getTargetNodeName(unsigned Opcode) const {
 
 MipsTargetLowering::MipsTargetLowering(const MipsTargetMachine &TM,
                                        const MipsSubtarget &STI)
-    : TargetLowering(TM, new MipsTargetObjectFile()), Subtarget(STI) {
+    : TargetLowering(TM, TM.getObjFileLowering()), Subtarget(STI) {
   // Mips does not have i1 type, so use i32 for
   // setcc operations results (slt, sgt, ...).
   setBooleanContents(ZeroOrOneBooleanContent);
diff --git a/llvm/lib/Target/Mips/MipsTargetMachine.cpp b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
index dd6c8cb..107fef5 100644
--- a/llvm/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
@@ -26,6 +26,7 @@
 #include "MipsSEISelDAGToDAG.h"
 #include "MipsSEISelLowering.h"
 #include "MipsSEInstrInfo.h"
+#include "MipsTargetObjectFile.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/PassManager.h"
@@ -56,7 +57,9 @@ MipsTargetMachine::MipsTargetMachine(const Target &T, StringRef TT,
                                      Reloc::Model RM, CodeModel::Model CM,
                                      CodeGenOpt::Level OL, bool isLittle)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
-      isLittle(isLittle), Subtarget(nullptr),
+      isLittle(isLittle),
+      TLOF(make_unique<MipsTargetObjectFile>()),
+      Subtarget(nullptr),
       DefaultSubtarget(TT, CPU, FS, isLittle, this),
       NoMips16Subtarget(TT, CPU, FS.empty() ? "-mips16" : FS.str() + ",-mips16",
                         isLittle, this),
diff --git a/llvm/lib/Target/Mips/MipsTargetMachine.h b/llvm/lib/Target/Mips/MipsTargetMachine.h
index 5ddbbcc..2b64600 100644
--- a/llvm/lib/Target/Mips/MipsTargetMachine.h
+++ b/llvm/lib/Target/Mips/MipsTargetMachine.h
@@ -26,6 +26,7 @@ class MipsRegisterInfo;
 
 class MipsTargetMachine : public LLVMTargetMachine {
   bool isLittle;
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   MipsSubtarget *Subtarget;
   MipsSubtarget DefaultSubtarget;
   MipsSubtarget NoMips16Subtarget;
@@ -38,8 +39,6 @@ public:
                     const TargetOptions &Options, Reloc::Model RM,
                     CodeModel::Model CM, CodeGenOpt::Level OL, bool isLittle);
 
-  virtual ~MipsTargetMachine() {}
-
   void addAnalysisPasses(PassManagerBase &PM) override;
 
   const MipsSubtarget *getSubtargetImpl() const override {
@@ -55,6 +54,10 @@ public:
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 /// MipsebTargetMachine - Mips32/64 big endian target machine.
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
index 26d0b4c..55c9737 100644
--- a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
@@ -107,7 +107,7 @@ static void ComputePTXValueVTs(const TargetLowering &TLI, Type *Ty,
 
 // NVPTXTargetLowering Constructor.
 NVPTXTargetLowering::NVPTXTargetLowering(const NVPTXTargetMachine &TM)
-    : TargetLowering(TM, new NVPTXTargetObjectFile()), nvTM(&TM),
+    : TargetLowering(TM, TM.getObjFileLowering()), nvTM(&TM),
       nvptxSubtarget(TM.getSubtarget<NVPTXSubtarget>()) {
 
   // always lower memset, memcpy, and memmove intrinsics to load/store
diff --git a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
index dd7a681..ef12c49 100644
--- a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
@@ -16,6 +16,7 @@
 #include "NVPTX.h"
 #include "NVPTXAllocaHoisting.h"
 #include "NVPTXLowerAggrCopies.h"
+#include "NVPTXTargetObjectFile.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/CodeGen/AsmPrinter.h"
 #include "llvm/CodeGen/MachineFunctionAnalysis.h"
@@ -74,6 +75,7 @@ NVPTXTargetMachine::NVPTXTargetMachine(const Target &T, StringRef TT,
                                        Reloc::Model RM, CodeModel::Model CM,
                                        CodeGenOpt::Level OL, bool is64bit)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(make_unique<NVPTXTargetObjectFile>()),
       Subtarget(TT, CPU, FS, *this, is64bit) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h
index 9c485b7..4794c2e 100644
--- a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h
+++ b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.h
@@ -25,6 +25,7 @@ namespace llvm {
 /// NVPTXTargetMachine
 ///
 class NVPTXTargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   NVPTXSubtarget Subtarget;
 
   // Hold Strings that can be free'd all together with NVPTXTargetMachine
@@ -48,6 +49,9 @@ public:
                          bool = true) override {
     return true;
   }
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 
   /// \brief Register NVPTX analysis passes with a pass manager.
   void addAnalysisPasses(PassManagerBase &PM) override;
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 17bf813..38656df 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -55,17 +55,8 @@ cl::desc("disable unaligned load/store generation on PPC"), cl::Hidden);
 // FIXME: Remove this once the bug has been fixed!
 extern cl::opt<bool> ANDIGlueBug;
 
-static TargetLoweringObjectFile *createTLOF(const Triple &TT) {
-  // If it isn't a Mach-O file then it's going to be a linux ELF
-  // object file.
-  if (TT.isOSDarwin())
-    return new TargetLoweringObjectFileMachO();
-
-  return new PPC64LinuxTargetObjectFile();
-}
-
 PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM)
-    : TargetLowering(TM, createTLOF(Triple(TM.getTargetTriple()))),
+    : TargetLowering(TM, TM.getObjFileLowering()),
       Subtarget(*TM.getSubtargetImpl()) {
   setPow2SDivIsCheap();
 
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index b0bfaab..6e4c907 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "PPCTargetMachine.h"
+#include "PPCTargetObjectFile.h"
 #include "PPC.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Function.h"
@@ -60,6 +61,15 @@ static std::string computeFSAdditions(StringRef FS, CodeGenOpt::Level OL, String
   return FullFS;
 }
 
+static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {
+  // If it isn't a Mach-O file then it's going to be a linux ELF
+  // object file.
+  if (TT.isOSDarwin())
+    return make_unique<TargetLoweringObjectFileMachO>();
+
+  return make_unique<PPC64LinuxTargetObjectFile>();
+}
+
 // The FeatureString here is a little subtle. We are modifying the feature string
 // with what are (currently) non-function specific overrides as it goes into the
 // LLVMTargetMachine constructor and then using the stored value in the
@@ -70,6 +80,7 @@ PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT, StringRef CPU,
                                    CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, TT, CPU, computeFSAdditions(FS, OL, TT), Options, RM,
                         CM, OL),
+      TLOF(createTLOF(Triple(getTargetTriple()))),
       Subtarget(TT, CPU, TargetFS, *this) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.h b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
index 35e2518..2371860 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
@@ -24,6 +24,7 @@ namespace llvm {
 /// PPCTargetMachine - Common code between 32-bit and 64-bit PowerPC targets.
 ///
 class PPCTargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   PPCSubtarget Subtarget;
 
   mutable StringMap<std::unique_ptr<PPCSubtarget>> SubtargetMap;
@@ -42,6 +43,9 @@ public:
 
   /// \brief Register PPC analysis passes with a pass manager.
   void addAnalysisPasses(PassManagerBase &PM) override;
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 /// PPC32TargetMachine - PowerPC 32-bit target machine.
diff --git a/llvm/lib/Target/R600/AMDGPUISelLowering.cpp b/llvm/lib/Target/R600/AMDGPUISelLowering.cpp
index 2ac20db..b5aa8b4 100644
--- a/llvm/lib/Target/R600/AMDGPUISelLowering.cpp
+++ b/llvm/lib/Target/R600/AMDGPUISelLowering.cpp
@@ -103,7 +103,7 @@ EVT AMDGPUTargetLowering::getEquivalentLoadRegType(LLVMContext &Ctx, EVT VT) {
 }
 
 AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
-  TargetLowering(TM, new TargetLoweringObjectFileELF()) {
+  TargetLowering(TM, TM.getObjFileLowering()) {
 
   Subtarget = &TM.getSubtarget<AMDGPUSubtarget>();
 
diff --git a/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp b/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp
index ca4d0ca..6f8ce1a 100644
--- a/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp
+++ b/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp
@@ -22,6 +22,7 @@
 #include "SIInstrInfo.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/CodeGen/MachineFunctionAnalysis.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Verifier.h"
@@ -54,12 +55,14 @@ AMDGPUTargetMachine::AMDGPUTargetMachine(const Target &T, StringRef TT,
                                          CodeModel::Model CM,
                                          CodeGenOpt::Level OptLevel)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OptLevel),
+      TLOF(new TargetLoweringObjectFileELF()),
       Subtarget(TT, CPU, FS, *this), IntrinsicInfo() {
   setRequiresStructuredCFG(true);
   initAsmInfo();
 }
 
 AMDGPUTargetMachine::~AMDGPUTargetMachine() {
+  delete TLOF;
 }
 
 namespace {
diff --git a/llvm/lib/Target/R600/AMDGPUTargetMachine.h b/llvm/lib/Target/R600/AMDGPUTargetMachine.h
index ff581b5..1b3dbce 100644
--- a/llvm/lib/Target/R600/AMDGPUTargetMachine.h
+++ b/llvm/lib/Target/R600/AMDGPUTargetMachine.h
@@ -25,6 +25,7 @@
 namespace llvm {
 
 class AMDGPUTargetMachine : public LLVMTargetMachine {
+  TargetLoweringObjectFile *TLOF;
   AMDGPUSubtarget Subtarget;
   AMDGPUIntrinsicInfo IntrinsicInfo;
 
@@ -43,6 +44,9 @@ public:
 
   /// \brief Register R600 analysis passes with a pass manager.
   void addAnalysisPasses(PassManagerBase &PM) override;
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF;
+  }
 };
 
 } // End namespace llvm
diff --git a/llvm/lib/Target/Sparc/SparcISelLowering.cpp b/llvm/lib/Target/Sparc/SparcISelLowering.cpp
index 8a7b437..c7356cb 100644
--- a/llvm/lib/Target/Sparc/SparcISelLowering.cpp
+++ b/llvm/lib/Target/Sparc/SparcISelLowering.cpp
@@ -1366,7 +1366,7 @@ static SPCC::CondCodes FPCondCCodeToFCC(ISD::CondCode CC) {
 }
 
 SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
-  : TargetLowering(TM, new SparcELFTargetObjectFile()) {
+  : TargetLowering(TM, TM.getObjFileLowering()) {
   Subtarget = &TM.getSubtarget<SparcSubtarget>();
 
   // Set up the register classes.
diff --git a/llvm/lib/Target/Sparc/SparcTargetMachine.cpp b/llvm/lib/Target/Sparc/SparcTargetMachine.cpp
index ae481b9..31cf1c1 100644
--- a/llvm/lib/Target/Sparc/SparcTargetMachine.cpp
+++ b/llvm/lib/Target/Sparc/SparcTargetMachine.cpp
@@ -11,6 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "SparcTargetMachine.h"
+#include "SparcTargetObjectFile.h"
 #include "Sparc.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/PassManager.h"
@@ -32,6 +33,7 @@ SparcTargetMachine::SparcTargetMachine(const Target &T, StringRef TT,
                                        CodeGenOpt::Level OL,
                                        bool is64bit)
   : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+    TLOF(make_unique<SparcELFTargetObjectFile>()),
     Subtarget(TT, CPU, FS, *this, is64bit) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/Sparc/SparcTargetMachine.h b/llvm/lib/Target/Sparc/SparcTargetMachine.h
index 142929c..f73c5c5 100644
--- a/llvm/lib/Target/Sparc/SparcTargetMachine.h
+++ b/llvm/lib/Target/Sparc/SparcTargetMachine.h
@@ -21,6 +21,7 @@
 namespace llvm {
 
 class SparcTargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   SparcSubtarget Subtarget;
 public:
   SparcTargetMachine(const Target &T, StringRef TT,
@@ -32,6 +33,9 @@ public:
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 /// SparcV8TargetMachine - Sparc 32-bit target machine
diff --git a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
index df6fae6..2df3677 100644
--- a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -81,7 +81,7 @@ static MachineOperand earlyUseOperand(MachineOperand Op) {
 }
 
 SystemZTargetLowering::SystemZTargetLowering(const TargetMachine &tm)
-    : TargetLowering(tm, new TargetLoweringObjectFileELF()),
+    : TargetLowering(tm, tm.getObjFileLowering()),
       Subtarget(tm.getSubtarget<SystemZSubtarget>()) {
   MVT PtrVT = getPointerTy();
 
diff --git a/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp b/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
index a30b225..2033262 100644
--- a/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -11,6 +11,7 @@
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Transforms/Scalar.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 
 using namespace llvm;
 
@@ -25,6 +26,7 @@ SystemZTargetMachine::SystemZTargetMachine(const Target &T, StringRef TT,
                                            Reloc::Model RM, CodeModel::Model CM,
                                            CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(make_unique<TargetLoweringObjectFileELF>()),
       Subtarget(TT, CPU, FS, *this) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/SystemZ/SystemZTargetMachine.h b/llvm/lib/Target/SystemZ/SystemZTargetMachine.h
index c5f9823..f4dbae2 100644
--- a/llvm/lib/Target/SystemZ/SystemZTargetMachine.h
+++ b/llvm/lib/Target/SystemZ/SystemZTargetMachine.h
@@ -23,6 +23,7 @@ namespace llvm {
 class TargetFrameLowering;
 
 class SystemZTargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   SystemZSubtarget        Subtarget;
 
 public:
@@ -37,6 +38,9 @@ public:
   }
   // Override LLVMTargetMachine
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 } // end namespace llvm
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 596be84..0f16f80 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -199,28 +199,10 @@ static SDValue Concat256BitVectors(SDValue V1, SDValue V2, EVT VT,
   return Insert256BitVector(V, V2, NumElems/2, DAG, dl);
 }
 
-static TargetLoweringObjectFile *createTLOF(const Triple &TT) {
-  if (TT.isOSBinFormatMachO()) {
-    if (TT.getArch() == Triple::x86_64)
-      return new X86_64MachoTargetObjectFile();
-    return new TargetLoweringObjectFileMachO();
-  }
-
-  if (TT.isOSLinux())
-    return new X86LinuxTargetObjectFile();
-  if (TT.isOSBinFormatELF())
-    return new TargetLoweringObjectFileELF();
-  if (TT.isKnownWindowsMSVCEnvironment())
-    return new X86WindowsTargetObjectFile();
-  if (TT.isOSBinFormatCOFF())
-    return new TargetLoweringObjectFileCOFF();
-  llvm_unreachable("unknown subtarget type");
-}
-
 // FIXME: This should stop caching the target machine as soon as
 // we can remove resetOperationActions et al.
 X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM)
-    : TargetLowering(TM, createTLOF(Triple(TM.getTargetTriple()))) {
+    : TargetLowering(TM, TM.getObjFileLowering()) {
   Subtarget = &TM.getSubtarget<X86Subtarget>();
   X86ScalarSSEf64 = Subtarget->hasSSE2();
   X86ScalarSSEf32 = Subtarget->hasSSE1();
diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp
index 3fc528f..198ce42 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -13,6 +13,7 @@
 
 #include "X86TargetMachine.h"
 #include "X86.h"
+#include "X86TargetObjectFile.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/PassManager.h"
@@ -30,6 +31,24 @@ extern "C" void LLVMInitializeX86Target() {
 
 void X86TargetMachine::anchor() { }
 
+static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {
+  if (TT.isOSBinFormatMachO()) {
+    if (TT.getArch() == Triple::x86_64)
+      return make_unique<X86_64MachoTargetObjectFile>();
+    return make_unique<TargetLoweringObjectFileMachO>();
+  }
+
+  if (TT.isOSLinux())
+    return make_unique<X86LinuxTargetObjectFile>();
+  if (TT.isOSBinFormatELF())
+    return make_unique<TargetLoweringObjectFileELF>();
+  if (TT.isKnownWindowsMSVCEnvironment())
+    return make_unique<X86WindowsTargetObjectFile>();
+  if (TT.isOSBinFormatCOFF())
+    return make_unique<TargetLoweringObjectFileCOFF>();
+  llvm_unreachable("unknown subtarget type");
+}
+
 /// X86TargetMachine ctor - Create an X86 target.
 ///
 X86TargetMachine::X86TargetMachine(const Target &T, StringRef TT, StringRef CPU,
@@ -37,6 +56,7 @@ X86TargetMachine::X86TargetMachine(const Target &T, StringRef TT, StringRef CPU,
                                    Reloc::Model RM, CodeModel::Model CM,
                                    CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(createTLOF(Triple(getTargetTriple()))),
       Subtarget(TT, CPU, FS, *this, Options.StackAlignmentOverride) {
   // default to hard float ABI
   if (Options.FloatABIType == FloatABI::Default)
diff --git a/llvm/lib/Target/X86/X86TargetMachine.h b/llvm/lib/Target/X86/X86TargetMachine.h
index 5f62d32..1d21a0c 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.h
+++ b/llvm/lib/Target/X86/X86TargetMachine.h
@@ -24,6 +24,7 @@ class StringRef;
 
 class X86TargetMachine final : public LLVMTargetMachine {
   virtual void anchor();
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   X86Subtarget       Subtarget;
 
   mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap;
@@ -41,6 +42,9 @@ public:
 
   // Set up the pass pipeline.
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 } // End llvm namespace
diff --git a/llvm/lib/Target/XCore/XCoreISelLowering.cpp b/llvm/lib/Target/XCore/XCoreISelLowering.cpp
index 76c2d95..5aff27b 100644
--- a/llvm/lib/Target/XCore/XCoreISelLowering.cpp
+++ b/llvm/lib/Target/XCore/XCoreISelLowering.cpp
@@ -69,7 +69,7 @@ getTargetNodeName(unsigned Opcode) const
 }
 
 XCoreTargetLowering::XCoreTargetLowering(const TargetMachine &TM)
-    : TargetLowering(TM, new XCoreTargetObjectFile()), TM(TM),
+    : TargetLowering(TM, TM.getObjFileLowering()), TM(TM),
       Subtarget(TM.getSubtarget<XCoreSubtarget>()) {
 
   // Set up the register classes.
diff --git a/llvm/lib/Target/XCore/XCoreTargetMachine.cpp b/llvm/lib/Target/XCore/XCoreTargetMachine.cpp
index 81925dc..1252ece 100644
--- a/llvm/lib/Target/XCore/XCoreTargetMachine.cpp
+++ b/llvm/lib/Target/XCore/XCoreTargetMachine.cpp
@@ -11,6 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "XCoreTargetMachine.h"
+#include "XCoreTargetObjectFile.h"
 #include "XCore.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Module.h"
@@ -26,6 +27,7 @@ XCoreTargetMachine::XCoreTargetMachine(const Target &T, StringRef TT,
                                        Reloc::Model RM, CodeModel::Model CM,
                                        CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      TLOF(make_unique<XCoreTargetObjectFile>()),
       Subtarget(TT, CPU, FS, *this) {
   initAsmInfo();
 }
diff --git a/llvm/lib/Target/XCore/XCoreTargetMachine.h b/llvm/lib/Target/XCore/XCoreTargetMachine.h
index 32360996..e4c0bbf 100644
--- a/llvm/lib/Target/XCore/XCoreTargetMachine.h
+++ b/llvm/lib/Target/XCore/XCoreTargetMachine.h
@@ -20,6 +20,7 @@
 namespace llvm {
 
 class XCoreTargetMachine : public LLVMTargetMachine {
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
   XCoreSubtarget Subtarget;
 public:
   XCoreTargetMachine(const Target &T, StringRef TT,
@@ -33,6 +34,9 @@ public:
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
 
   void addAnalysisPasses(PassManagerBase &PM) override;
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return TLOF.get();
+  }
 };
 
 } // end namespace llvm