X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FPowerPC%2FPPCAsmPrinter.cpp;h=09e5febc6356616787894a577b30c1418ee6c9b5;hb=241ede07b0ceeeee9709da377d4418046e7d2b03;hp=2803f80a77776d85175cf9edf2dad94b9da26acf;hpb=9fb8b49380e7cf6ce88400ad65051e830563bc81;p=oota-llvm.git diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp index 2803f80a777..09e5febc635 100644 --- a/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -16,114 +16,127 @@ // //===----------------------------------------------------------------------===// -#define DEBUG_TYPE "asmprinter" #include "PPC.h" -#include "PPCTargetMachine.h" -#include "PPCSubtarget.h" #include "InstPrinter/PPCInstPrinter.h" +#include "MCTargetDesc/PPCMCExpr.h" #include "MCTargetDesc/PPCPredicates.h" -#include "llvm/Constants.h" -#include "llvm/DebugInfo.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Module.h" -#include "llvm/Assembly/Writer.h" +#include "PPCMachineFunctionInfo.h" +#include "PPCSubtarget.h" +#include "PPCTargetMachine.h" +#include "PPCTargetStreamer.h" +#include "llvm/ADT/MapVector.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/StringExtras.h" #include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/CodeGen/MachineConstantPool.h" #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineModuleInfoImpls.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" +#include "llvm/CodeGen/StackMaps.h" #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h" +#include "llvm/IR/Constants.h" +#include "llvm/IR/DebugInfo.h" +#include "llvm/IR/DerivedTypes.h" +#include "llvm/IR/Mangler.h" +#include "llvm/IR/Module.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" #include "llvm/MC/MCExpr.h" #include "llvm/MC/MCInst.h" +#include "llvm/MC/MCInstBuilder.h" +#include "llvm/MC/MCSectionELF.h" #include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCStreamer.h" #include "llvm/MC/MCSymbol.h" -#include "llvm/MC/MCSectionELF.h" -#include "llvm/Target/Mangler.h" -#include "llvm/Target/TargetRegisterInfo.h" -#include "llvm/Target/TargetInstrInfo.h" -#include "llvm/Target/TargetOptions.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" -#include "llvm/Support/MathExtras.h" +#include "llvm/Support/ELF.h" #include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/MathExtras.h" #include "llvm/Support/TargetRegistry.h" #include "llvm/Support/raw_ostream.h" -#include "llvm/Support/ELF.h" -#include "llvm/ADT/StringExtras.h" -#include "llvm/ADT/SmallString.h" +#include "llvm/Target/TargetInstrInfo.h" +#include "llvm/Target/TargetOptions.h" +#include "llvm/Target/TargetRegisterInfo.h" using namespace llvm; +#define DEBUG_TYPE "asmprinter" + namespace { class PPCAsmPrinter : public AsmPrinter { protected: - DenseMap TOC; - const PPCSubtarget &Subtarget; + MapVector TOC; + const PPCSubtarget *Subtarget; uint64_t TOCLabelID; + StackMaps SM; public: - explicit PPCAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) - : AsmPrinter(TM, Streamer), - Subtarget(TM.getSubtarget()), TOCLabelID(0) {} + explicit PPCAsmPrinter(TargetMachine &TM, + std::unique_ptr Streamer) + : AsmPrinter(TM, std::move(Streamer)), + Subtarget(&TM.getSubtarget()), TOCLabelID(0), + SM(*this) {} - virtual const char *getPassName() const { + const char *getPassName() const override { return "PowerPC Assembly Printer"; } + MCSymbol *lookUpOrCreateTOCEntry(MCSymbol *Sym); - virtual void EmitInstruction(const MachineInstr *MI); + void EmitInstruction(const MachineInstr *MI) override; void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O); bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, unsigned AsmVariant, const char *ExtraCode, - raw_ostream &O); + raw_ostream &O) override; bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, unsigned AsmVariant, const char *ExtraCode, - raw_ostream &O); - - MachineLocation getDebugValueLocation(const MachineInstr *MI) const { - MachineLocation Location; - assert(MI->getNumOperands() == 4 && "Invalid no. of machine operands!"); - // Frame address. Currently handles register +- offset only. - if (MI->getOperand(0).isReg() && MI->getOperand(2).isImm()) - Location.set(MI->getOperand(0).getReg(), MI->getOperand(2).getImm()); - else { - DEBUG(dbgs() << "DBG_VALUE instruction ignored! " << *MI << "\n"); - } - return Location; - } + raw_ostream &O) override; + + void EmitEndOfAsmFile(Module &M) override; + + void LowerSTACKMAP(MCStreamer &OutStreamer, StackMaps &SM, + const MachineInstr &MI); + void LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM, + const MachineInstr &MI); }; /// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux class PPCLinuxAsmPrinter : public PPCAsmPrinter { public: - explicit PPCLinuxAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) - : PPCAsmPrinter(TM, Streamer) {} + explicit PPCLinuxAsmPrinter(TargetMachine &TM, + std::unique_ptr Streamer) + : PPCAsmPrinter(TM, std::move(Streamer)) {} - virtual const char *getPassName() const { + const char *getPassName() const override { return "Linux PPC Assembly Printer"; } - bool doFinalization(Module &M); + bool doFinalization(Module &M) override; + void EmitStartOfAsmFile(Module &M) override; + + void EmitFunctionEntryLabel() override; - virtual void EmitFunctionEntryLabel(); + void EmitFunctionBodyStart() override; + void EmitFunctionBodyEnd() override; }; /// PPCDarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac /// OS X class PPCDarwinAsmPrinter : public PPCAsmPrinter { public: - explicit PPCDarwinAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) - : PPCAsmPrinter(TM, Streamer) {} + explicit PPCDarwinAsmPrinter(TargetMachine &TM, + std::unique_ptr Streamer) + : PPCAsmPrinter(TM, std::move(Streamer)) {} - virtual const char *getPassName() const { + const char *getPassName() const override { return "Darwin PPC Assembly Printer"; } - bool doFinalization(Module &M); - void EmitStartOfAsmFile(Module &M); + bool doFinalization(Module &M) override; + void EmitStartOfAsmFile(Module &M) override; void EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs); }; @@ -135,7 +148,10 @@ static const char *stripRegisterPrefix(const char *RegName) { switch (RegName[0]) { case 'r': case 'f': - case 'v': return RegName + 1; + case 'v': + if (RegName[1] == 's') + return RegName + 2; + return RegName + 1; case 'c': if (RegName[1] == 'r') return RegName + 2; } @@ -144,6 +160,7 @@ static const char *stripRegisterPrefix(const char *RegName) { void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { + const DataLayout *DL = TM.getDataLayout(); const MachineOperand &MO = MI->getOperand(OpNo); switch (MO.getType()) { @@ -151,7 +168,8 @@ void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo, const char *RegName = PPCInstPrinter::getRegisterName(MO.getReg()); // Linux assembler (Others?) does not take register mnemonics. // FIXME - What about special registers used in mfspr/mtspr? - if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName); + if (!Subtarget->isDarwin()) + RegName = stripRegisterPrefix(RegName); O << RegName; return; } @@ -162,37 +180,13 @@ void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo, case MachineOperand::MO_MachineBasicBlock: O << *MO.getMBB()->getSymbol(); return; - case MachineOperand::MO_JumpTableIndex: - O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << MO.getIndex(); - // FIXME: PIC relocation model - return; case MachineOperand::MO_ConstantPoolIndex: - O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() + O << DL->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_' << MO.getIndex(); return; case MachineOperand::MO_BlockAddress: O << *GetBlockAddressSymbol(MO.getBlockAddress()); return; - case MachineOperand::MO_ExternalSymbol: { - // Computing the address of an external symbol, not calling it. - if (TM.getRelocationModel() == Reloc::Static) { - O << *GetExternalSymbolSymbol(MO.getSymbolName()); - return; - } - - MCSymbol *NLPSym = - OutContext.GetOrCreateSymbol(StringRef(MAI->getGlobalPrefix())+ - MO.getSymbolName()+"$non_lazy_ptr"); - MachineModuleInfoImpl::StubValueTy &StubSym = - MMI->getObjFileInfo().getGVStubEntry(NLPSym); - if (StubSym.getPointer() == 0) - StubSym = MachineModuleInfoImpl:: - StubValueTy(GetExternalSymbolSymbol(MO.getSymbolName()), true); - - O << *NLPSym; - return; - } case MachineOperand::MO_GlobalAddress: { // Computing the address of a global symbol, not calling it. const GlobalValue *GV = MO.getGlobal(); @@ -202,28 +196,28 @@ void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo, if (TM.getRelocationModel() != Reloc::Static && (GV->isDeclaration() || GV->isWeakForLinker())) { if (!GV->hasHiddenVisibility()) { - SymToPrint = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); + SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); MachineModuleInfoImpl::StubValueTy &StubSym = MMI->getObjFileInfo() .getGVStubEntry(SymToPrint); - if (StubSym.getPointer() == 0) + if (!StubSym.getPointer()) StubSym = MachineModuleInfoImpl:: - StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage()); + StubValueTy(getSymbol(GV), !GV->hasInternalLinkage()); } else if (GV->isDeclaration() || GV->hasCommonLinkage() || GV->hasAvailableExternallyLinkage()) { - SymToPrint = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); + SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); MachineModuleInfoImpl::StubValueTy &StubSym = MMI->getObjFileInfo(). getHiddenGVStubEntry(SymToPrint); - if (StubSym.getPointer() == 0) + if (!StubSym.getPointer()) StubSym = MachineModuleInfoImpl:: - StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage()); + StubValueTy(getSymbol(GV), !GV->hasInternalLinkage()); } else { - SymToPrint = Mang->getSymbol(GV); + SymToPrint = getSymbol(GV); } } else { - SymToPrint = Mang->getSymbol(GV); + SymToPrint = getSymbol(GV); } O << *SymToPrint; @@ -233,7 +227,7 @@ void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo, } default: - O << ""; + O << ""; return; } } @@ -282,8 +276,35 @@ bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, unsigned AsmVariant, const char *ExtraCode, raw_ostream &O) { - if (ExtraCode && ExtraCode[0]) - return true; // Unknown modifier. + if (ExtraCode && ExtraCode[0]) { + if (ExtraCode[1] != 0) return true; // Unknown modifier. + + switch (ExtraCode[0]) { + default: return true; // Unknown modifier. + case 'y': // A memory reference for an X-form instruction + { + const char *RegName = "r0"; + if (!Subtarget->isDarwin()) + RegName = stripRegisterPrefix(RegName); + O << RegName << ", "; + printOperand(MI, OpNo, O); + return false; + } + case 'U': // Print 'u' for update form. + case 'X': // Print 'x' for indexed form. + { + // FIXME: Currently for PowerPC memory operands are always loaded + // into a register, so we never get an update or indexed form. + // This is bad even for offset forms, since even if we know we + // have a value in -16(r1), we will generate a load into r + // and then load from 0(r). Until that issue is fixed, + // tolerate 'U' and 'X' but don't output anything. + assert(MI->getOperand(OpNo).isReg()); + return false; + } + } + } + assert(MI->getOperand(OpNo).isReg()); O << "0("; printOperand(MI, OpNo, O); @@ -292,37 +313,139 @@ bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, } +/// lookUpOrCreateTOCEntry -- Given a symbol, look up whether a TOC entry +/// exists for it. If not, create one. Then return a symbol that references +/// the TOC entry. +MCSymbol *PPCAsmPrinter::lookUpOrCreateTOCEntry(MCSymbol *Sym) { + const DataLayout *DL = TM.getDataLayout(); + MCSymbol *&TOCEntry = TOC[Sym]; + + // To avoid name clash check if the name already exists. + while (!TOCEntry) { + if (OutContext.LookupSymbol(Twine(DL->getPrivateGlobalPrefix()) + + "C" + Twine(TOCLabelID++)) == nullptr) { + TOCEntry = GetTempSymbol("C", TOCLabelID); + } + } + + return TOCEntry; +} + +void PPCAsmPrinter::EmitEndOfAsmFile(Module &M) { + SM.serializeToStackMapSection(); +} + +void PPCAsmPrinter::LowerSTACKMAP(MCStreamer &OutStreamer, StackMaps &SM, + const MachineInstr &MI) { + unsigned NumNOPBytes = MI.getOperand(1).getImm(); + + SM.recordStackMap(MI); + assert(NumNOPBytes % 4 == 0 && "Invalid number of NOP bytes requested!"); + + // Scan ahead to trim the shadow. + const MachineBasicBlock &MBB = *MI.getParent(); + MachineBasicBlock::const_iterator MII(MI); + ++MII; + while (NumNOPBytes > 0) { + if (MII == MBB.end() || MII->isCall() || + MII->getOpcode() == PPC::DBG_VALUE || + MII->getOpcode() == TargetOpcode::PATCHPOINT || + MII->getOpcode() == TargetOpcode::STACKMAP) + break; + ++MII; + NumNOPBytes -= 4; + } + + // Emit nops. + for (unsigned i = 0; i < NumNOPBytes; i += 4) + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::NOP)); +} + +// Lower a patchpoint of the form: +// [], , , , +void PPCAsmPrinter::LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM, + const MachineInstr &MI) { + SM.recordPatchPoint(MI); + PatchPointOpers Opers(&MI); + + int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm(); + unsigned EncodedBytes = 0; + if (CallTarget) { + assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget && + "High 16 bits of call target should be zero."); + unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg(); + EncodedBytes = 6*4; + // Materialize the jump address: + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LI8) + .addReg(ScratchReg) + .addImm((CallTarget >> 32) & 0xFFFF)); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::RLDIC) + .addReg(ScratchReg) + .addReg(ScratchReg) + .addImm(32).addImm(16)); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORIS8) + .addReg(ScratchReg) + .addReg(ScratchReg) + .addImm((CallTarget >> 16) & 0xFFFF)); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORI8) + .addReg(ScratchReg) + .addReg(ScratchReg) + .addImm(CallTarget & 0xFFFF)); + + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTCTR8).addReg(ScratchReg)); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCTRL8)); + } + + // Emit padding. + unsigned NumBytes = Opers.getMetaOper(PatchPointOpers::NBytesPos).getImm(); + assert(NumBytes >= EncodedBytes && + "Patchpoint can't request size less than the length of a call."); + assert((NumBytes - EncodedBytes) % 4 == 0 && + "Invalid number of NOP bytes requested!"); + for (unsigned i = EncodedBytes; i < NumBytes; i += 4) + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::NOP)); +} + /// EmitInstruction -- Print out a single PowerPC MI in Darwin syntax to /// the current output stream. /// void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { MCInst TmpInst; + bool isPPC64 = Subtarget->isPPC64(); + bool isDarwin = Triple(TM.getTargetTriple()).isOSDarwin(); + const Module *M = MF->getFunction()->getParent(); + PICLevel::Level PL = M->getPICLevel(); // Lower multi-instruction pseudo operations. switch (MI->getOpcode()) { default: break; - case TargetOpcode::DBG_VALUE: { - if (!isVerbose() || !OutStreamer.hasRawTextSupport()) return; - - SmallString<32> Str; - raw_svector_ostream O(Str); - unsigned NOps = MI->getNumOperands(); - assert(NOps==4); - O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: "; - // cast away const; DIetc do not take const operands for some reason. - DIVariable V(const_cast(MI->getOperand(NOps-1).getMetadata())); - O << V.getName(); - O << " <- "; - // Frame address. Currently handles register +- offset only. - assert(MI->getOperand(0).isReg() && MI->getOperand(1).isImm()); - O << '['; printOperand(MI, 0, O); O << '+'; printOperand(MI, 1, O); - O << ']'; - O << "+"; - printOperand(MI, NOps-2, O); - OutStreamer.EmitRawText(O.str()); + case TargetOpcode::DBG_VALUE: + llvm_unreachable("Should be handled target independently"); + case TargetOpcode::STACKMAP: + return LowerSTACKMAP(OutStreamer, SM, *MI); + case TargetOpcode::PATCHPOINT: + return LowerPATCHPOINT(OutStreamer, SM, *MI); + + case PPC::MoveGOTtoLR: { + // Transform %LR = MoveGOTtoLR + // Into this: bl _GLOBAL_OFFSET_TABLE_@local-4 + // _GLOBAL_OFFSET_TABLE_@local-4 (instruction preceding + // _GLOBAL_OFFSET_TABLE_) has exactly one instruction: + // blrl + // This will return the pointer to _GLOBAL_OFFSET_TABLE_@local + MCSymbol *GOTSymbol = + OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_")); + const MCExpr *OffsExpr = + MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(GOTSymbol, + MCSymbolRefExpr::VK_PPC_LOCAL, + OutContext), + MCConstantExpr::Create(4, OutContext), + OutContext); + + // Emit the 'bl'. + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BL).addExpr(OffsExpr)); return; } - case PPC::MovePCtoLR: case PPC::MovePCtoLR8: { // Transform %LR = MovePCtoLR @@ -332,24 +455,94 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { MCSymbol *PICBase = MF->getPICBaseSymbol(); // Emit the 'bl'. - TmpInst.setOpcode(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. - TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr:: - Create(PICBase, OutContext))); - OutStreamer.EmitInstruction(TmpInst); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BL) + // 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 the label. OutStreamer.EmitLabel(PICBase); return; } + case PPC::UpdateGBR: { + // Transform %Rd = UpdateGBR(%Rt, %Ri) + // Into: lwz %Rt, .L0$poff - .L0$pb(%Ri) + // add %Rd, %Rt, %Ri + // Get the offset from the GOT Base Register to the GOT + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + MCSymbol *PICOffset = + MF->getInfo()->getPICOffsetSymbol(); + TmpInst.setOpcode(PPC::LWZ); + const MCExpr *Exp = + MCSymbolRefExpr::Create(PICOffset, MCSymbolRefExpr::VK_None, OutContext); + const MCExpr *PB = + MCSymbolRefExpr::Create(MF->getPICBaseSymbol(), + MCSymbolRefExpr::VK_None, + OutContext); + const MCOperand TR = TmpInst.getOperand(1); + const MCOperand PICR = TmpInst.getOperand(0); + + // Step 1: lwz %Rt, .L$poff - .L$pb(%Ri) + TmpInst.getOperand(1) = + MCOperand::CreateExpr(MCBinaryExpr::CreateSub(Exp, PB, OutContext)); + TmpInst.getOperand(0) = TR; + TmpInst.getOperand(2) = PICR; + EmitToStreamer(OutStreamer, TmpInst); + + TmpInst.setOpcode(PPC::ADD4); + TmpInst.getOperand(0) = PICR; + TmpInst.getOperand(1) = TR; + TmpInst.getOperand(2) = PICR; + EmitToStreamer(OutStreamer, TmpInst); + return; + } + case PPC::LWZtoc: { + // Transform %R3 = LWZtoc , %R2 + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + + // Change the opcode to LWZ, and the global address operand to be a + // reference to the GOT entry we will synthesize later. + TmpInst.setOpcode(PPC::LWZ); + const MachineOperand &MO = MI->getOperand(1); + + // Map symbol -> label of TOC entry + assert(MO.isGlobal() || MO.isCPI() || MO.isJTI() || MO.isBlockAddress()); + MCSymbol *MOSymbol = nullptr; + if (MO.isGlobal()) + MOSymbol = getSymbol(MO.getGlobal()); + else if (MO.isCPI()) + MOSymbol = GetCPISymbol(MO.getIndex()); + else if (MO.isJTI()) + MOSymbol = GetJTISymbol(MO.getIndex()); + else if (MO.isBlockAddress()) + MOSymbol = GetBlockAddressSymbol(MO.getBlockAddress()); + + if (PL == PICLevel::Small) { + const MCExpr *Exp = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_GOT, + OutContext); + TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp); + } else { + MCSymbol *TOCEntry = lookUpOrCreateTOCEntry(MOSymbol); + + const MCExpr *Exp = + MCSymbolRefExpr::Create(TOCEntry, MCSymbolRefExpr::VK_None, + OutContext); + const MCExpr *PB = + MCSymbolRefExpr::Create(OutContext.GetOrCreateSymbol(Twine(".LTOC")), + OutContext); + Exp = MCBinaryExpr::CreateSub(Exp, PB, OutContext); + TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp); + } + EmitToStreamer(OutStreamer, TmpInst); + return; + } case PPC::LDtocJTI: case PPC::LDtocCPT: + case PPC::LDtocBA: case PPC::LDtoc: { // Transform %X3 = LDtoc , %X2 - LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin()); + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); // Change the opcode to LD, and the global address operand to be a // reference to the TOC entry we will synthesize later. @@ -357,68 +550,482 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { const MachineOperand &MO = MI->getOperand(1); // Map symbol -> label of TOC entry - assert(MO.isGlobal() || MO.isCPI() || MO.isJTI()); - MCSymbol *MOSymbol = 0; + assert(MO.isGlobal() || MO.isCPI() || MO.isJTI() || MO.isBlockAddress()); + MCSymbol *MOSymbol = nullptr; if (MO.isGlobal()) - MOSymbol = Mang->getSymbol(MO.getGlobal()); + MOSymbol = getSymbol(MO.getGlobal()); else if (MO.isCPI()) MOSymbol = GetCPISymbol(MO.getIndex()); else if (MO.isJTI()) MOSymbol = GetJTISymbol(MO.getIndex()); - MCSymbol *&TOCEntry = TOC[MOSymbol]; - if (TOCEntry == 0) - TOCEntry = GetTempSymbol("C", TOCLabelID++); - + else if (MO.isBlockAddress()) + MOSymbol = GetBlockAddressSymbol(MO.getBlockAddress()); + + MCSymbol *TOCEntry = lookUpOrCreateTOCEntry(MOSymbol); + const MCExpr *Exp = - MCSymbolRefExpr::Create(TOCEntry, MCSymbolRefExpr::VK_PPC_TOC_ENTRY, + MCSymbolRefExpr::Create(TOCEntry, MCSymbolRefExpr::VK_PPC_TOC, OutContext); TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp); - OutStreamer.EmitInstruction(TmpInst); + EmitToStreamer(OutStreamer, TmpInst); return; } - case PPC::MFCRpseud: - case PPC::MFCR8pseud: - // Transform: %R3 = MFCRpseud %CR7 - // Into: %R3 = MFCR ;; cr7 - OutStreamer.AddComment(PPCInstPrinter:: - getRegisterName(MI->getOperand(1).getReg())); - TmpInst.setOpcode(Subtarget.isPPC64() ? PPC::MFCR8 : PPC::MFCR); - TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg())); - OutStreamer.EmitInstruction(TmpInst); + case PPC::ADDIStocHA: { + // Transform %Xd = ADDIStocHA %X2, + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + + // Change the opcode to ADDIS8. If the global address is external, has + // common linkage, is a non-local function address, or is a jump table + // address, then generate a TOC entry and reference that. Otherwise + // reference the symbol directly. + TmpInst.setOpcode(PPC::ADDIS8); + const MachineOperand &MO = MI->getOperand(2); + assert((MO.isGlobal() || MO.isCPI() || MO.isJTI() || + MO.isBlockAddress()) && + "Invalid operand for ADDIStocHA!"); + MCSymbol *MOSymbol = nullptr; + bool IsExternal = false; + bool IsNonLocalFunction = false; + bool IsCommon = false; + bool IsAvailExt = false; + + if (MO.isGlobal()) { + const GlobalValue *GV = MO.getGlobal(); + MOSymbol = getSymbol(GV); + IsExternal = GV->isDeclaration(); + IsCommon = GV->hasCommonLinkage(); + IsNonLocalFunction = GV->getType()->getElementType()->isFunctionTy() && + (GV->isDeclaration() || GV->isWeakForLinker()); + IsAvailExt = GV->hasAvailableExternallyLinkage(); + } else if (MO.isCPI()) + MOSymbol = GetCPISymbol(MO.getIndex()); + else if (MO.isJTI()) + MOSymbol = GetJTISymbol(MO.getIndex()); + else if (MO.isBlockAddress()) + MOSymbol = GetBlockAddressSymbol(MO.getBlockAddress()); + + if (IsExternal || IsNonLocalFunction || IsCommon || IsAvailExt || + MO.isJTI() || MO.isBlockAddress() || + TM.getCodeModel() == CodeModel::Large) + MOSymbol = lookUpOrCreateTOCEntry(MOSymbol); + + const MCExpr *Exp = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_HA, + OutContext); + TmpInst.getOperand(2) = MCOperand::CreateExpr(Exp); + EmitToStreamer(OutStreamer, TmpInst); return; - case PPC::SYNC: - // In Book E sync is called msync, handle this special case here... - if (Subtarget.isBookE()) { - OutStreamer.EmitRawText(StringRef("\tmsync")); + } + case PPC::LDtocL: { + // Transform %Xd = LDtocL , %Xs + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + + // Change the opcode to LD. If the global address is external, has + // common linkage, or is a jump table address, then reference the + // associated TOC entry. Otherwise reference the symbol directly. + TmpInst.setOpcode(PPC::LD); + const MachineOperand &MO = MI->getOperand(1); + assert((MO.isGlobal() || MO.isCPI() || MO.isJTI() || + MO.isBlockAddress()) && + "Invalid operand for LDtocL!"); + MCSymbol *MOSymbol = nullptr; + + if (MO.isJTI()) + MOSymbol = lookUpOrCreateTOCEntry(GetJTISymbol(MO.getIndex())); + else if (MO.isBlockAddress()) { + MOSymbol = GetBlockAddressSymbol(MO.getBlockAddress()); + MOSymbol = lookUpOrCreateTOCEntry(MOSymbol); + } + else if (MO.isCPI()) { + MOSymbol = GetCPISymbol(MO.getIndex()); + if (TM.getCodeModel() == CodeModel::Large) + MOSymbol = lookUpOrCreateTOCEntry(MOSymbol); + } + else if (MO.isGlobal()) { + const GlobalValue *GValue = MO.getGlobal(); + MOSymbol = getSymbol(GValue); + if (GValue->getType()->getElementType()->isFunctionTy() || + GValue->isDeclaration() || GValue->hasCommonLinkage() || + GValue->hasAvailableExternallyLinkage() || + TM.getCodeModel() == CodeModel::Large) + MOSymbol = lookUpOrCreateTOCEntry(MOSymbol); + } + + const MCExpr *Exp = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_LO, + OutContext); + TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp); + EmitToStreamer(OutStreamer, TmpInst); + return; + } + case PPC::ADDItocL: { + // Transform %Xd = ADDItocL %Xs, + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + + // Change the opcode to ADDI8. If the global address is external, then + // generate a TOC entry and reference that. Otherwise reference the + // symbol directly. + TmpInst.setOpcode(PPC::ADDI8); + const MachineOperand &MO = MI->getOperand(2); + assert((MO.isGlobal() || MO.isCPI()) && "Invalid operand for ADDItocL"); + MCSymbol *MOSymbol = nullptr; + bool IsExternal = false; + bool IsNonLocalFunction = false; + + if (MO.isGlobal()) { + const GlobalValue *GV = MO.getGlobal(); + MOSymbol = getSymbol(GV); + IsExternal = GV->isDeclaration(); + IsNonLocalFunction = GV->getType()->getElementType()->isFunctionTy() && + (GV->isDeclaration() || GV->isWeakForLinker()); + } else if (MO.isCPI()) + MOSymbol = GetCPISymbol(MO.getIndex()); + + if (IsNonLocalFunction || IsExternal || + TM.getCodeModel() == CodeModel::Large) + MOSymbol = lookUpOrCreateTOCEntry(MOSymbol); + + const MCExpr *Exp = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_LO, + OutContext); + TmpInst.getOperand(2) = MCOperand::CreateExpr(Exp); + EmitToStreamer(OutStreamer, TmpInst); + return; + } + case PPC::ADDISgotTprelHA: { + // Transform: %Xd = ADDISgotTprelHA %X2, + // Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha + assert(Subtarget->isPPC64() && "Not supported for 32-bit PowerPC"); + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymGotTprel = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TPREL_HA, + OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS8) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addExpr(SymGotTprel)); + return; + } + case PPC::LDgotTprelL: + case PPC::LDgotTprelL32: { + // Transform %Xd = LDgotTprelL , %Xs + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + + // Change the opcode to LD. + TmpInst.setOpcode(isPPC64 ? PPC::LD : PPC::LWZ); + const MachineOperand &MO = MI->getOperand(1); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *Exp = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO, + OutContext); + TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp); + EmitToStreamer(OutStreamer, TmpInst); + return; + } + + case PPC::PPC32PICGOT: { + MCSymbol *GOTSymbol = OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_")); + MCSymbol *GOTRef = OutContext.CreateTempSymbol(); + MCSymbol *NextInstr = OutContext.CreateTempSymbol(); + + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BL) + // FIXME: We would like an efficient form for this, so we don't have to do + // a lot of extra uniquing. + .addExpr(MCSymbolRefExpr::Create(NextInstr, OutContext))); + const MCExpr *OffsExpr = + MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(GOTSymbol, OutContext), + MCSymbolRefExpr::Create(GOTRef, OutContext), + OutContext); + OutStreamer.EmitLabel(GOTRef); + OutStreamer.EmitValue(OffsExpr, 4); + OutStreamer.EmitLabel(NextInstr); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MFLR) + .addReg(MI->getOperand(0).getReg())); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LWZ) + .addReg(MI->getOperand(1).getReg()) + .addImm(0) + .addReg(MI->getOperand(0).getReg())); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADD4) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addReg(MI->getOperand(0).getReg())); + return; + } + case PPC::PPC32GOT: { + MCSymbol *GOTSymbol = OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_")); + const MCExpr *SymGotTlsL = + MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_LO, + OutContext); + const MCExpr *SymGotTlsHA = + MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_HA, + OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LI) + .addReg(MI->getOperand(0).getReg()) + .addExpr(SymGotTlsL)); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(0).getReg()) + .addExpr(SymGotTlsHA)); + return; + } + case PPC::ADDIStlsgdHA: { + // Transform: %Xd = ADDIStlsgdHA %X2, + // Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha + assert(Subtarget->isPPC64() && "Not supported for 32-bit PowerPC"); + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymGotTlsGD = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HA, + OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS8) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addExpr(SymGotTlsGD)); + return; + } + case PPC::ADDItlsgdL: + // Transform: %Xd = ADDItlsgdL %Xs, + // Into: %Xd = ADDI8 %Xs, sym@got@tlsgd@l + case PPC::ADDItlsgdL32: { + // Transform: %Rd = ADDItlsgdL32 %Rs, + // Into: %Rd = ADDI %Rs, sym@got@tlsgd + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymGotTlsGD = MCSymbolRefExpr::Create( + MOSymbol, Subtarget->isPPC64() ? MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO + : MCSymbolRefExpr::VK_PPC_GOT_TLSGD, + OutContext); + EmitToStreamer(OutStreamer, + MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDI8 : PPC::ADDI) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addExpr(SymGotTlsGD)); + return; + } + case PPC::ADDIStlsldHA: { + // Transform: %Xd = ADDIStlsldHA %X2, + // Into: %Xd = ADDIS8 %X2, sym@got@tlsld@ha + assert(Subtarget->isPPC64() && "Not supported for 32-bit PowerPC"); + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymGotTlsLD = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HA, + OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS8) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addExpr(SymGotTlsLD)); + return; + } + case PPC::ADDItlsldL: + // Transform: %Xd = ADDItlsldL %Xs, + // Into: %Xd = ADDI8 %Xs, sym@got@tlsld@l + case PPC::ADDItlsldL32: { + // Transform: %Rd = ADDItlsldL32 %Rs, + // Into: %Rd = ADDI %Rs, sym@got@tlsld + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymGotTlsLD = MCSymbolRefExpr::Create( + MOSymbol, Subtarget->isPPC64() ? MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO + : MCSymbolRefExpr::VK_PPC_GOT_TLSLD, + OutContext); + EmitToStreamer(OutStreamer, + MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDI8 : PPC::ADDI) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addExpr(SymGotTlsLD)); + return; + } + case PPC::ADDISdtprelHA: + // Transform: %Xd = ADDISdtprelHA %X3, + // Into: %Xd = ADDIS8 %X3, sym@dtprel@ha + case PPC::ADDISdtprelHA32: { + // Transform: %Rd = ADDISdtprelHA32 %R3, + // Into: %Rd = ADDIS %R3, sym@dtprel@ha + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymDtprel = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_HA, + OutContext); + EmitToStreamer( + OutStreamer, + MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDIS8 : PPC::ADDIS) + .addReg(MI->getOperand(0).getReg()) + .addReg(Subtarget->isPPC64() ? PPC::X3 : PPC::R3) + .addExpr(SymDtprel)); + return; + } + case PPC::ADDIdtprelL: + // Transform: %Xd = ADDIdtprelL %Xs, + // Into: %Xd = ADDI8 %Xs, sym@dtprel@l + case PPC::ADDIdtprelL32: { + // Transform: %Rd = ADDIdtprelL32 %Rs, + // Into: %Rd = ADDI %Rs, sym@dtprel@l + const MachineOperand &MO = MI->getOperand(2); + const GlobalValue *GValue = MO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymDtprel = + MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_LO, + OutContext); + EmitToStreamer(OutStreamer, + MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDI8 : PPC::ADDI) + .addReg(MI->getOperand(0).getReg()) + .addReg(MI->getOperand(1).getReg()) + .addExpr(SymDtprel)); + return; + } + case PPC::MFOCRF: + case PPC::MFOCRF8: + if (!Subtarget->hasMFOCRF()) { + // Transform: %R3 = MFOCRF %CR7 + // Into: %R3 = MFCR ;; cr7 + unsigned NewOpcode = + MI->getOpcode() == PPC::MFOCRF ? PPC::MFCR : PPC::MFCR8; + OutStreamer.AddComment(PPCInstPrinter:: + getRegisterName(MI->getOperand(1).getReg())); + EmitToStreamer(OutStreamer, MCInstBuilder(NewOpcode) + .addReg(MI->getOperand(0).getReg())); + return; + } + break; + case PPC::MTOCRF: + case PPC::MTOCRF8: + if (!Subtarget->hasMFOCRF()) { + // Transform: %CR7 = MTOCRF %R3 + // Into: MTCRF mask, %R3 ;; cr7 + unsigned NewOpcode = + MI->getOpcode() == PPC::MTOCRF ? PPC::MTCRF : PPC::MTCRF8; + unsigned Mask = 0x80 >> OutContext.getRegisterInfo() + ->getEncodingValue(MI->getOperand(0).getReg()); + OutStreamer.AddComment(PPCInstPrinter:: + getRegisterName(MI->getOperand(0).getReg())); + EmitToStreamer(OutStreamer, MCInstBuilder(NewOpcode) + .addImm(Mask) + .addReg(MI->getOperand(1).getReg())); return; } + break; + case PPC::LD: + case PPC::STD: + case PPC::LWA_32: + case PPC::LWA: { + // Verify alignment is legal, so we don't create relocations + // that can't be supported. + // FIXME: This test is currently disabled for Darwin. The test + // suite shows a handful of test cases that fail this check for + // Darwin. Those need to be investigated before this sanity test + // can be enabled for those subtargets. + if (!Subtarget->isDarwin()) { + unsigned OpNum = (MI->getOpcode() == PPC::STD) ? 2 : 1; + const MachineOperand &MO = MI->getOperand(OpNum); + if (MO.isGlobal() && MO.getGlobal()->getAlignment() < 4) + llvm_unreachable("Global must be word-aligned for LD, STD, LWA!"); + } + // Now process the instruction normally. + break; + } } - LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin()); - OutStreamer.EmitInstruction(TmpInst); + LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); + EmitToStreamer(OutStreamer, TmpInst); +} + +void PPCLinuxAsmPrinter::EmitStartOfAsmFile(Module &M) { + if (Subtarget->isELFv2ABI()) { + PPCTargetStreamer *TS = + static_cast(OutStreamer.getTargetStreamer()); + + if (TS) + TS->emitAbiVersion(2); + } + + if (Subtarget->isPPC64() || TM.getRelocationModel() != Reloc::PIC_) + return AsmPrinter::EmitStartOfAsmFile(M); + + if (M.getPICLevel() == PICLevel::Small) + return AsmPrinter::EmitStartOfAsmFile(M); + + OutStreamer.SwitchSection(OutContext.getELFSection( + ".got2", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC)); + + MCSymbol *TOCSym = OutContext.GetOrCreateSymbol(Twine(".LTOC")); + MCSymbol *CurrentPos = OutContext.CreateTempSymbol(); + + OutStreamer.EmitLabel(CurrentPos); + + // The GOT pointer points to the middle of the GOT, in order to reference the + // entire 64kB range. 0x8000 is the midpoint. + const MCExpr *tocExpr = + MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(CurrentPos, OutContext), + MCConstantExpr::Create(0x8000, OutContext), + OutContext); + + OutStreamer.EmitAssignment(TOCSym, tocExpr); + + OutStreamer.SwitchSection(getObjFileLowering().getTextSection()); } void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() { - if (!Subtarget.isPPC64()) // linux/ppc32 - Normal entry label. + // linux/ppc32 - Normal entry label. + if (!Subtarget->isPPC64() && + (TM.getRelocationModel() != Reloc::PIC_ || + MF->getFunction()->getParent()->getPICLevel() == PICLevel::Small)) return AsmPrinter::EmitFunctionEntryLabel(); - + + if (!Subtarget->isPPC64()) { + const PPCFunctionInfo *PPCFI = MF->getInfo(); + if (PPCFI->usesPICBase()) { + MCSymbol *RelocSymbol = PPCFI->getPICOffsetSymbol(); + MCSymbol *PICBase = MF->getPICBaseSymbol(); + OutStreamer.EmitLabel(RelocSymbol); + + const MCExpr *OffsExpr = + MCBinaryExpr::CreateSub( + MCSymbolRefExpr::Create(OutContext.GetOrCreateSymbol(Twine(".LTOC")), + OutContext), + MCSymbolRefExpr::Create(PICBase, OutContext), + OutContext); + OutStreamer.EmitValue(OffsExpr, 4); + OutStreamer.EmitLabel(CurrentFnSym); + return; + } else + return AsmPrinter::EmitFunctionEntryLabel(); + } + + // ELFv2 ABI - Normal entry label. + if (Subtarget->isELFv2ABI()) + return AsmPrinter::EmitFunctionEntryLabel(); + // Emit an official procedure descriptor. - const MCSection *Current = OutStreamer.getCurrentSection(); - const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".opd", - ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC, - SectionKind::getReadOnly()); + MCSectionSubPair Current = OutStreamer.getCurrentSection(); + const MCSectionELF *Section = OutStreamer.getContext().getELFSection( + ".opd", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC); OutStreamer.SwitchSection(Section); OutStreamer.EmitLabel(CurrentFnSym); OutStreamer.EmitValueToAlignment(8); MCSymbol *Symbol1 = OutContext.GetOrCreateSymbol(".L." + Twine(CurrentFnSym->getName())); - MCSymbol *Symbol2 = OutContext.GetOrCreateSymbol(StringRef(".TOC.@tocbase")); + // Generates a R_PPC64_ADDR64 (from FK_DATA_8) relocation for the function + // entry point. OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol1, OutContext), - Subtarget.isPPC64() ? 8 : 4/*size*/, 0/*addrspace*/); - OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol2, OutContext), - Subtarget.isPPC64() ? 8 : 4/*size*/, 0/*addrspace*/); - OutStreamer.SwitchSection(Current); + 8 /*size*/); + MCSymbol *Symbol2 = OutContext.GetOrCreateSymbol(StringRef(".TOC.")); + // Generates a R_PPC64_TOC relocation for TOC base insertion. + OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol2, + MCSymbolRefExpr::VK_PPC_TOCBASE, OutContext), + 8/*size*/); + // Emit a null environment pointer. + OutStreamer.EmitIntValue(0, 8 /* size */); + OutStreamer.SwitchSection(Current.first, Current.second); MCSymbol *RealFnSym = OutContext.GetOrCreateSymbol( ".L." + Twine(CurrentFnSym->getName())); @@ -428,28 +1035,136 @@ void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() { bool PPCLinuxAsmPrinter::doFinalization(Module &M) { - const TargetData *TD = TM.getTargetData(); + const DataLayout *TD = TM.getDataLayout(); bool isPPC64 = TD->getPointerSizeInBits() == 64; - if (isPPC64 && !TOC.empty()) { - const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".toc", - ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC, - SectionKind::getReadOnly()); + PPCTargetStreamer &TS = + static_cast(*OutStreamer.getTargetStreamer()); + + if (!TOC.empty()) { + const MCSectionELF *Section; + + if (isPPC64) + Section = OutStreamer.getContext().getELFSection( + ".toc", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC); + else + Section = OutStreamer.getContext().getELFSection( + ".got2", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC); OutStreamer.SwitchSection(Section); - // FIXME: This is nondeterminstic! - for (DenseMap::iterator I = TOC.begin(), + for (MapVector::iterator I = TOC.begin(), E = TOC.end(); I != E; ++I) { OutStreamer.EmitLabel(I->second); - OutStreamer.EmitRawText("\t.tc " + Twine(I->first->getName()) + - "[TC]," + I->first->getName()); + MCSymbol *S = I->first; + if (isPPC64) + TS.emitTCEntry(*S); + else + OutStreamer.EmitSymbolValue(S, 4); } } + MachineModuleInfoELF &MMIELF = + MMI->getObjFileInfo(); + + MachineModuleInfoELF::SymbolListTy Stubs = MMIELF.GetGVStubList(); + if (!Stubs.empty()) { + OutStreamer.SwitchSection(getObjFileLowering().getDataSection()); + for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { + // L_foo$stub: + OutStreamer.EmitLabel(Stubs[i].first); + // .long _foo + OutStreamer.EmitValue(MCSymbolRefExpr::Create(Stubs[i].second.getPointer(), + OutContext), + isPPC64 ? 8 : 4/*size*/); + } + + Stubs.clear(); + OutStreamer.AddBlankLine(); + } + return AsmPrinter::doFinalization(M); } +/// EmitFunctionBodyStart - Emit a global entry point prefix for ELFv2. +void PPCLinuxAsmPrinter::EmitFunctionBodyStart() { + // In the ELFv2 ABI, in functions that use the TOC register, we need to + // provide two entry points. The ABI guarantees that when calling the + // local entry point, r2 is set up by the caller to contain the TOC base + // for this function, and when calling the global entry point, r12 is set + // up by the caller to hold the address of the global entry point. We + // thus emit a prefix sequence along the following lines: + // + // func: + // # global entry point + // addis r2,r12,(.TOC.-func)@ha + // addi r2,r2,(.TOC.-func)@l + // .localentry func, .-func + // # local entry point, followed by function body + // + // This ensures we have r2 set up correctly while executing the function + // body, no matter which entry point is called. + if (Subtarget->isELFv2ABI() + // Only do all that if the function uses r2 in the first place. + && !MF->getRegInfo().use_empty(PPC::X2)) { + + MCSymbol *GlobalEntryLabel = OutContext.CreateTempSymbol(); + OutStreamer.EmitLabel(GlobalEntryLabel); + const MCSymbolRefExpr *GlobalEntryLabelExp = + MCSymbolRefExpr::Create(GlobalEntryLabel, OutContext); + + MCSymbol *TOCSymbol = OutContext.GetOrCreateSymbol(StringRef(".TOC.")); + const MCExpr *TOCDeltaExpr = + MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(TOCSymbol, OutContext), + GlobalEntryLabelExp, OutContext); + + const MCExpr *TOCDeltaHi = + PPCMCExpr::CreateHa(TOCDeltaExpr, false, OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS) + .addReg(PPC::X2) + .addReg(PPC::X12) + .addExpr(TOCDeltaHi)); + + const MCExpr *TOCDeltaLo = + PPCMCExpr::CreateLo(TOCDeltaExpr, false, OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDI) + .addReg(PPC::X2) + .addReg(PPC::X2) + .addExpr(TOCDeltaLo)); + + MCSymbol *LocalEntryLabel = OutContext.CreateTempSymbol(); + OutStreamer.EmitLabel(LocalEntryLabel); + const MCSymbolRefExpr *LocalEntryLabelExp = + MCSymbolRefExpr::Create(LocalEntryLabel, OutContext); + const MCExpr *LocalOffsetExp = + MCBinaryExpr::CreateSub(LocalEntryLabelExp, + GlobalEntryLabelExp, OutContext); + + PPCTargetStreamer *TS = + static_cast(OutStreamer.getTargetStreamer()); + + if (TS) + TS->emitLocalEntry(CurrentFnSym, LocalOffsetExp); + } +} + +/// EmitFunctionBodyEnd - Print the traceback table before the .size +/// directive. +/// +void PPCLinuxAsmPrinter::EmitFunctionBodyEnd() { + // Only the 64-bit target requires a traceback table. For now, + // we only emit the word of zeroes that GDB requires to find + // the end of the function, and zeroes for the eight-byte + // mandatory fields. + // FIXME: We should fill in the eight-byte mandatory fields as described in + // the PPC64 ELF ABI (this is a low-priority item because GDB does not + // currently make use of these fields). + if (Subtarget->isPPC64()) { + OutStreamer.EmitIntValue(0, 4/*size*/); + OutStreamer.EmitIntValue(0, 8/*size*/); + } +} + void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) { static const char *const CPUDirectives[] = { "", @@ -462,23 +1177,33 @@ void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) { "ppc750", "ppc970", "ppcA2", + "ppce500mc", + "ppce5500", + "power3", + "power4", + "power5", + "power5x", "power6", + "power6x", "power7", - "ppc64" + "ppc64", + "ppc64le" }; - unsigned Directive = Subtarget.getDarwinDirective(); - if (Subtarget.hasMFOCRF() && Directive < PPC::DIR_970) + unsigned Directive = Subtarget->getDarwinDirective(); + if (Subtarget->hasMFOCRF() && Directive < PPC::DIR_970) Directive = PPC::DIR_970; - if (Subtarget.hasAltivec() && Directive < PPC::DIR_7400) + if (Subtarget->hasAltivec() && Directive < PPC::DIR_7400) Directive = PPC::DIR_7400; - if (Subtarget.isPPC64() && Directive < PPC::DIR_64) + if (Subtarget->isPPC64() && Directive < PPC::DIR_64) Directive = PPC::DIR_64; assert(Directive <= PPC::DIR_64 && "Directive out of range."); - - // FIXME: This is a total hack, finish mc'izing the PPC backend. - if (OutStreamer.hasRawTextSupport()) - OutStreamer.EmitRawText("\t.machine " + Twine(CPUDirectives[Directive])); + + assert(Directive < array_lengthof(CPUDirectives) && + "CPUDirectives[] might not be up-to-date!"); + PPCTargetStreamer &TStreamer = + *static_cast(OutStreamer.getTargetStreamer()); + TStreamer.emitMachine(CPUDirectives[Directive]); // Prime text sections so they are adjacent. This reduces the likelihood a // large data or debug section causes a branch to exceed 16M limit. @@ -488,14 +1213,14 @@ void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) { if (TM.getRelocationModel() == Reloc::PIC_) { OutStreamer.SwitchSection( OutContext.getMachOSection("__TEXT", "__picsymbolstub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, + MachO::S_SYMBOL_STUBS | + MachO::S_ATTR_PURE_INSTRUCTIONS, 32, SectionKind::getText())); } else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) { OutStreamer.SwitchSection( OutContext.getMachOSection("__TEXT","__symbol_stub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, + MachO::S_SYMBOL_STUBS | + MachO::S_ATTR_PURE_INSTRUCTIONS, 16, SectionKind::getText())); } OutStreamer.SwitchSection(getObjFileLowering().getTextSection()); @@ -503,21 +1228,19 @@ void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) { static MCSymbol *GetLazyPtr(MCSymbol *Sym, MCContext &Ctx) { // Remove $stub suffix, add $lazy_ptr. - SmallString<128> TmpStr(Sym->getName().begin(), Sym->getName().end()-5); - TmpStr += "$lazy_ptr"; - return Ctx.GetOrCreateSymbol(TmpStr.str()); + StringRef NoStub = Sym->getName().substr(0, Sym->getName().size()-5); + return Ctx.GetOrCreateSymbol(NoStub + "$lazy_ptr"); } static MCSymbol *GetAnonSym(MCSymbol *Sym, MCContext &Ctx) { // Add $tmp suffix to $stub, yielding $stub$tmp. - SmallString<128> TmpStr(Sym->getName().begin(), Sym->getName().end()); - TmpStr += "$tmp"; - return Ctx.GetOrCreateSymbol(TmpStr.str()); + return Ctx.GetOrCreateSymbol(Sym->getName() + "$tmp"); } void PPCDarwinAsmPrinter:: EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) { - bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64; + bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64; + bool isDarwin = Subtarget->isDarwin(); const TargetLoweringObjectFileMachO &TLOFMacho = static_cast(getObjFileLowering()); @@ -529,8 +1252,8 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) { if (TM.getRelocationModel() == Reloc::PIC_) { const MCSection *StubSection = OutContext.getMachOSection("__TEXT", "__picsymbolstub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, + MachO::S_SYMBOL_STUBS | + MachO::S_ATTR_PURE_INSTRUCTIONS, 32, SectionKind::getText()); for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { OutStreamer.SwitchSection(StubSection); @@ -543,32 +1266,53 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) { OutStreamer.EmitLabel(Stub); OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - // FIXME: MCize this. - OutStreamer.EmitRawText(StringRef("\tmflr r0")); - OutStreamer.EmitRawText("\tbcl 20,31," + Twine(AnonSymbol->getName())); + + const MCExpr *Anon = MCSymbolRefExpr::Create(AnonSymbol, OutContext); + const MCExpr *LazyPtrExpr = MCSymbolRefExpr::Create(LazyPtr, OutContext); + const MCExpr *Sub = + MCBinaryExpr::CreateSub(LazyPtrExpr, Anon, OutContext); + + // mflr r0 + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MFLR).addReg(PPC::R0)); + // bcl 20, 31, AnonSymbol + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCLalways).addExpr(Anon)); OutStreamer.EmitLabel(AnonSymbol); - OutStreamer.EmitRawText(StringRef("\tmflr r11")); - OutStreamer.EmitRawText("\taddis r11,r11,ha16("+Twine(LazyPtr->getName())+ - "-" + AnonSymbol->getName() + ")"); - OutStreamer.EmitRawText(StringRef("\tmtlr r0")); - - if (isPPC64) - OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) + - "-" + AnonSymbol->getName() + ")(r11)"); - else - OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) + - "-" + AnonSymbol->getName() + ")(r11)"); - OutStreamer.EmitRawText(StringRef("\tmtctr r12")); - OutStreamer.EmitRawText(StringRef("\tbctr")); - + // mflr r11 + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MFLR).addReg(PPC::R11)); + // addis r11, r11, ha16(LazyPtr - AnonSymbol) + const MCExpr *SubHa16 = PPCMCExpr::CreateHa(Sub, isDarwin, OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS) + .addReg(PPC::R11) + .addReg(PPC::R11) + .addExpr(SubHa16)); + // mtlr r0 + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTLR).addReg(PPC::R0)); + + // ldu r12, lo16(LazyPtr - AnonSymbol)(r11) + // lwzu r12, lo16(LazyPtr - AnonSymbol)(r11) + const MCExpr *SubLo16 = PPCMCExpr::CreateLo(Sub, isDarwin, OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU) + .addReg(PPC::R12) + .addExpr(SubLo16).addExpr(SubLo16) + .addReg(PPC::R11)); + // mtctr r12 + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTCTR).addReg(PPC::R12)); + // bctr + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCTR)); + OutStreamer.SwitchSection(LSPSection); OutStreamer.EmitLabel(LazyPtr); OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - - if (isPPC64) - OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper")); - else - OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper")); + + MCSymbol *DyldStubBindingHelper = + OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper")); + if (isPPC64) { + // .quad dyld_stub_binding_helper + OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8); + } else { + // .long dyld_stub_binding_helper + OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4); + } } OutStreamer.AddBlankLine(); return; @@ -576,35 +1320,54 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) { const MCSection *StubSection = OutContext.getMachOSection("__TEXT","__symbol_stub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, + MachO::S_SYMBOL_STUBS | + MachO::S_ATTR_PURE_INSTRUCTIONS, 16, SectionKind::getText()); for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { MCSymbol *Stub = Stubs[i].first; MCSymbol *RawSym = Stubs[i].second.getPointer(); MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext); + const MCExpr *LazyPtrExpr = MCSymbolRefExpr::Create(LazyPtr, OutContext); OutStreamer.SwitchSection(StubSection); EmitAlignment(4); OutStreamer.EmitLabel(Stub); OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - OutStreamer.EmitRawText("\tlis r11,ha16(" + Twine(LazyPtr->getName()) +")"); - if (isPPC64) - OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) + - ")(r11)"); - else - OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) + - ")(r11)"); - OutStreamer.EmitRawText(StringRef("\tmtctr r12")); - OutStreamer.EmitRawText(StringRef("\tbctr")); + + // lis r11, ha16(LazyPtr) + const MCExpr *LazyPtrHa16 = + PPCMCExpr::CreateHa(LazyPtrExpr, isDarwin, OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LIS) + .addReg(PPC::R11) + .addExpr(LazyPtrHa16)); + + // ldu r12, lo16(LazyPtr)(r11) + // lwzu r12, lo16(LazyPtr)(r11) + const MCExpr *LazyPtrLo16 = + PPCMCExpr::CreateLo(LazyPtrExpr, isDarwin, OutContext); + EmitToStreamer(OutStreamer, MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU) + .addReg(PPC::R12) + .addExpr(LazyPtrLo16).addExpr(LazyPtrLo16) + .addReg(PPC::R11)); + + // mtctr r12 + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTCTR).addReg(PPC::R12)); + // bctr + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCTR)); + OutStreamer.SwitchSection(LSPSection); OutStreamer.EmitLabel(LazyPtr); OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - - if (isPPC64) - OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper")); - else - OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper")); + + MCSymbol *DyldStubBindingHelper = + OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper")); + if (isPPC64) { + // .quad dyld_stub_binding_helper + OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8); + } else { + // .long dyld_stub_binding_helper + OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4); + } } OutStreamer.AddBlankLine(); @@ -612,7 +1375,7 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) { bool PPCDarwinAsmPrinter::doFinalization(Module &M) { - bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64; + bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64; // Darwin/PPC always uses mach-o. const TargetLoweringObjectFileMachO &TLOFMacho = @@ -631,10 +1394,10 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) { for (std::vector::const_iterator I = Personalities.begin(), E = Personalities.end(); I != E; ++I) { if (*I) { - MCSymbol *NLPSym = GetSymbolWithGlobalValueBase(*I, "$non_lazy_ptr"); + MCSymbol *NLPSym = getSymbolWithGlobalValueBase(*I, "$non_lazy_ptr"); MachineModuleInfoImpl::StubValueTy &StubSym = MMIMacho.getGVStubEntry(NLPSym); - StubSym = MachineModuleInfoImpl::StubValueTy(Mang->getSymbol(*I), true); + StubSym = MachineModuleInfoImpl::StubValueTy(getSymbol(*I), true); } } } @@ -657,7 +1420,7 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) { if (MCSym.getInt()) // External to current translation unit. - OutStreamer.EmitIntValue(0, isPPC64 ? 8 : 4/*size*/, 0/*addrspace*/); + OutStreamer.EmitIntValue(0, isPPC64 ? 8 : 4/*size*/); else // Internal to current translation unit. // @@ -667,7 +1430,7 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) { // fill in the value for the NLP in those cases. OutStreamer.EmitValue(MCSymbolRefExpr::Create(MCSym.getPointer(), OutContext), - isPPC64 ? 8 : 4/*size*/, 0/*addrspace*/); + isPPC64 ? 8 : 4/*size*/); } Stubs.clear(); @@ -686,7 +1449,7 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) { OutStreamer.EmitValue(MCSymbolRefExpr:: Create(Stubs[i].second.getPointer(), OutContext), - isPPC64 ? 8 : 4/*size*/, 0/*addrspace*/); + isPPC64 ? 8 : 4/*size*/); } Stubs.clear(); @@ -707,17 +1470,19 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) { /// for a MachineFunction to the given output stream, in a format that the /// Darwin assembler can deal with. /// -static AsmPrinter *createPPCAsmPrinterPass(TargetMachine &tm, - MCStreamer &Streamer) { +static AsmPrinter * +createPPCAsmPrinterPass(TargetMachine &tm, + std::unique_ptr &&Streamer) { const PPCSubtarget *Subtarget = &tm.getSubtarget(); if (Subtarget->isDarwin()) - return new PPCDarwinAsmPrinter(tm, Streamer); - return new PPCLinuxAsmPrinter(tm, Streamer); + return new PPCDarwinAsmPrinter(tm, std::move(Streamer)); + return new PPCLinuxAsmPrinter(tm, std::move(Streamer)); } // Force static initialization. extern "C" void LLVMInitializePowerPCAsmPrinter() { TargetRegistry::RegisterAsmPrinter(ThePPC32Target, createPPCAsmPrinterPass); TargetRegistry::RegisterAsmPrinter(ThePPC64Target, createPPCAsmPrinterPass); + TargetRegistry::RegisterAsmPrinter(ThePPC64LETarget, createPPCAsmPrinterPass); }