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diff --git a/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
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+++ b/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -0,0 +1,1565 @@
+//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a printer that converts from our internal representation
+// of machine-dependent LLVM code to PowerPC assembly language. This printer is
+// the output mechanism used by `llc'.
+//
+// Documentation at http://developer.apple.com/documentation/DeveloperTools/
+// Reference/Assembler/ASMIntroduction/chapter_1_section_1.html
+//
+//===----------------------------------------------------------------------===//
+
+#include "PPC.h"
+#include "InstPrinter/PPCInstPrinter.h"
+#include "MCTargetDesc/PPCMCExpr.h"
+#include "MCTargetDesc/PPCPredicates.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/MCSymbolELF.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.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/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:
+ MapVector<MCSymbol *, MCSymbol *> TOC;
+ const PPCSubtarget *Subtarget;
+ StackMaps SM;
+
+public:
+ explicit PPCAsmPrinter(TargetMachine &TM,
+ std::unique_ptr<MCStreamer> Streamer)
+ : AsmPrinter(TM, std::move(Streamer)), SM(*this) {}
+
+ const char *getPassName() const override {
+ return "PowerPC Assembly Printer";
+ }
+
+ MCSymbol *lookUpOrCreateTOCEntry(MCSymbol *Sym);
+
+ 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) override;
+ bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant, const char *ExtraCode,
+ raw_ostream &O) override;
+
+ void EmitEndOfAsmFile(Module &M) override;
+
+ void LowerSTACKMAP(StackMaps &SM, const MachineInstr &MI);
+ void LowerPATCHPOINT(StackMaps &SM, const MachineInstr &MI);
+ void EmitTlsCall(const MachineInstr *MI, MCSymbolRefExpr::VariantKind VK);
+ bool runOnMachineFunction(MachineFunction &MF) override {
+ Subtarget = &MF.getSubtarget<PPCSubtarget>();
+ return AsmPrinter::runOnMachineFunction(MF);
+ }
+ };
+
+ /// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux
+ class PPCLinuxAsmPrinter : public PPCAsmPrinter {
+ public:
+ explicit PPCLinuxAsmPrinter(TargetMachine &TM,
+ std::unique_ptr<MCStreamer> Streamer)
+ : PPCAsmPrinter(TM, std::move(Streamer)) {}
+
+ const char *getPassName() const override {
+ return "Linux PPC Assembly Printer";
+ }
+
+ bool doFinalization(Module &M) override;
+ void EmitStartOfAsmFile(Module &M) override;
+
+ void EmitFunctionEntryLabel() override;
+
+ 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,
+ std::unique_ptr<MCStreamer> Streamer)
+ : PPCAsmPrinter(TM, std::move(Streamer)) {}
+
+ const char *getPassName() const override {
+ return "Darwin PPC Assembly Printer";
+ }
+
+ bool doFinalization(Module &M) override;
+ void EmitStartOfAsmFile(Module &M) override;
+
+ void EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs);
+ };
+} // end of anonymous namespace
+
+/// stripRegisterPrefix - This method strips the character prefix from a
+/// register name so that only the number is left. Used by for linux asm.
+static const char *stripRegisterPrefix(const char *RegName) {
+ switch (RegName[0]) {
+ case 'r':
+ case 'f':
+ case 'q': // for QPX
+ case 'v':
+ if (RegName[1] == 's')
+ return RegName + 2;
+ return RegName + 1;
+ case 'c': if (RegName[1] == 'r') return RegName + 2;
+ }
+
+ return RegName;
+}
+
+void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
+ raw_ostream &O) {
+ const DataLayout &DL = getDataLayout();
+ const MachineOperand &MO = MI->getOperand(OpNo);
+
+ switch (MO.getType()) {
+ case MachineOperand::MO_Register: {
+ 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);
+ O << RegName;
+ return;
+ }
+ case MachineOperand::MO_Immediate:
+ O << MO.getImm();
+ return;
+
+ case MachineOperand::MO_MachineBasicBlock:
+ MO.getMBB()->getSymbol()->print(O, MAI);
+ return;
+ case MachineOperand::MO_ConstantPoolIndex:
+ O << DL.getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
+ << MO.getIndex();
+ return;
+ case MachineOperand::MO_BlockAddress:
+ GetBlockAddressSymbol(MO.getBlockAddress())->print(O, MAI);
+ return;
+ case MachineOperand::MO_GlobalAddress: {
+ // Computing the address of a global symbol, not calling it.
+ const GlobalValue *GV = MO.getGlobal();
+ MCSymbol *SymToPrint;
+
+ // External or weakly linked global variables need non-lazily-resolved stubs
+ if (TM.getRelocationModel() != Reloc::Static &&
+ !GV->isStrongDefinitionForLinker()) {
+ if (!GV->hasHiddenVisibility()) {
+ SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getGVStubEntry(
+ SymToPrint);
+ if (!StubSym.getPointer())
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
+ } else if (GV->isDeclaration() || GV->hasCommonLinkage() ||
+ GV->hasAvailableExternallyLinkage()) {
+ SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getHiddenGVStubEntry(
+ SymToPrint);
+ if (!StubSym.getPointer())
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
+ } else {
+ SymToPrint = getSymbol(GV);
+ }
+ } else {
+ SymToPrint = getSymbol(GV);
+ }
+
+ SymToPrint->print(O, MAI);
+
+ printOffset(MO.getOffset(), O);
+ return;
+ }
+
+ default:
+ O << "<unknown operand type: " << (unsigned)MO.getType() << ">";
+ return;
+ }
+}
+
+/// PrintAsmOperand - Print out an operand for an inline asm expression.
+///
+bool PPCAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant,
+ const char *ExtraCode, raw_ostream &O) {
+ // Does this asm operand have a single letter operand modifier?
+ if (ExtraCode && ExtraCode[0]) {
+ if (ExtraCode[1] != 0) return true; // Unknown modifier.
+
+ switch (ExtraCode[0]) {
+ default:
+ // See if this is a generic print operand
+ return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
+ case 'c': // Don't print "$" before a global var name or constant.
+ break; // PPC never has a prefix.
+ case 'L': // Write second word of DImode reference.
+ // Verify that this operand has two consecutive registers.
+ if (!MI->getOperand(OpNo).isReg() ||
+ OpNo+1 == MI->getNumOperands() ||
+ !MI->getOperand(OpNo+1).isReg())
+ return true;
+ ++OpNo; // Return the high-part.
+ break;
+ case 'I':
+ // Write 'i' if an integer constant, otherwise nothing. Used to print
+ // addi vs add, etc.
+ if (MI->getOperand(OpNo).isImm())
+ O << "i";
+ return false;
+ }
+ }
+
+ printOperand(MI, OpNo, O);
+ return false;
+}
+
+// At the moment, all inline asm memory operands are a single register.
+// In any case, the output of this routine should always be just one
+// assembler operand.
+
+bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant,
+ const char *ExtraCode,
+ raw_ostream &O) {
+ 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<n>
+ // and then load from 0(r<n>). 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);
+ O << ")";
+ return false;
+}
+
+/// 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) {
+ MCSymbol *&TOCEntry = TOC[Sym];
+ if (!TOCEntry)
+ TOCEntry = createTempSymbol("C");
+ return TOCEntry;
+}
+
+void PPCAsmPrinter::EmitEndOfAsmFile(Module &M) {
+ SM.serializeToStackMapSection();
+}
+
+void PPCAsmPrinter::LowerSTACKMAP(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:
+// [<def>], <id>, <numBytes>, <target>, <numArgs>
+void PPCAsmPrinter::LowerPATCHPOINT(StackMaps &SM, const MachineInstr &MI) {
+ SM.recordPatchPoint(MI);
+ PatchPointOpers Opers(&MI);
+
+ unsigned EncodedBytes = 0;
+ const MachineOperand &CalleeMO =
+ Opers.getMetaOper(PatchPointOpers::TargetPos);
+
+ if (CalleeMO.isImm()) {
+ int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm();
+ if (CallTarget) {
+ assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget &&
+ "High 16 bits of call target should be zero.");
+ unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg();
+ EncodedBytes = 0;
+ // Materialize the jump address:
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LI8)
+ .addReg(ScratchReg)
+ .addImm((CallTarget >> 32) & 0xFFFF));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::RLDIC)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm(32).addImm(16));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ORIS8)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm((CallTarget >> 16) & 0xFFFF));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ORI8)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm(CallTarget & 0xFFFF));
+
+ // Save the current TOC pointer before the remote call.
+ int TOCSaveOffset = Subtarget->isELFv2ABI() ? 24 : 40;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::STD)
+ .addReg(PPC::X2)
+ .addImm(TOCSaveOffset)
+ .addReg(PPC::X1));
+ ++EncodedBytes;
+
+ // If we're on ELFv1, then we need to load the actual function pointer
+ // from the function descriptor.
+ if (!Subtarget->isELFv2ABI()) {
+ // Load the new TOC pointer and the function address, but not r11
+ // (needing this is rare, and loading it here would prevent passing it
+ // via a 'nest' parameter.
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(PPC::X2)
+ .addImm(8)
+ .addReg(ScratchReg));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(ScratchReg)
+ .addImm(0)
+ .addReg(ScratchReg));
+ ++EncodedBytes;
+ }
+
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::MTCTR8)
+ .addReg(ScratchReg));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::BCTRL8));
+ ++EncodedBytes;
+
+ // Restore the TOC pointer after the call.
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(PPC::X2)
+ .addImm(TOCSaveOffset)
+ .addReg(PPC::X1));
+ ++EncodedBytes;
+ }
+ } else if (CalleeMO.isGlobal()) {
+ const GlobalValue *GValue = CalleeMO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymVar = MCSymbolRefExpr::create(MOSymbol, OutContext);
+
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::BL8_NOP)
+ .addExpr(SymVar));
+ EncodedBytes += 2;
+ }
+
+ // Each instruction is 4 bytes.
+ EncodedBytes *= 4;
+
+ // 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));
+}
+
+/// EmitTlsCall -- Given a GETtls[ld]ADDR[32] instruction, print a
+/// call to __tls_get_addr to the current output stream.
+void PPCAsmPrinter::EmitTlsCall(const MachineInstr *MI,
+ MCSymbolRefExpr::VariantKind VK) {
+ StringRef Name = "__tls_get_addr";
+ MCSymbol *TlsGetAddr = OutContext.getOrCreateSymbol(Name);
+ MCSymbolRefExpr::VariantKind Kind = MCSymbolRefExpr::VK_None;
+
+ assert(MI->getOperand(0).isReg() &&
+ ((Subtarget->isPPC64() && MI->getOperand(0).getReg() == PPC::X3) ||
+ (!Subtarget->isPPC64() && MI->getOperand(0).getReg() == PPC::R3)) &&
+ "GETtls[ld]ADDR[32] must define GPR3");
+ assert(MI->getOperand(1).isReg() &&
+ ((Subtarget->isPPC64() && MI->getOperand(1).getReg() == PPC::X3) ||
+ (!Subtarget->isPPC64() && MI->getOperand(1).getReg() == PPC::R3)) &&
+ "GETtls[ld]ADDR[32] must read GPR3");
+
+ if (!Subtarget->isPPC64() && !Subtarget->isDarwin() &&
+ TM.getRelocationModel() == Reloc::PIC_)
+ Kind = MCSymbolRefExpr::VK_PLT;
+ const MCSymbolRefExpr *TlsRef =
+ MCSymbolRefExpr::create(TlsGetAddr, Kind, OutContext);
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymVar = MCSymbolRefExpr::create(MOSymbol, VK, OutContext);
+ EmitToStreamer(*OutStreamer,
+ MCInstBuilder(Subtarget->isPPC64() ?
+ PPC::BL8_NOP_TLS : PPC::BL_TLS)
+ .addExpr(TlsRef)
+ .addExpr(SymVar));
+}
+
+/// 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 = 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:
+ llvm_unreachable("Should be handled target independently");
+ case TargetOpcode::STACKMAP:
+ return LowerSTACKMAP(SM, *MI);
+ case TargetOpcode::PATCHPOINT:
+ return LowerPATCHPOINT(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
+ // Into this, where the label is the PIC base:
+ // bl L1$pb
+ // L1$pb:
+ MCSymbol *PICBase = MF->getPICBaseSymbol();
+
+ // Emit the 'bl'.
+ EmitToStreamer(*OutStreamer,
+ MCInstBuilder(PPC::BL)
+ // FIXME: We would like an efficient form for this, so we
+ // don't have to do a lot of extra uniquing.
+ .addExpr(MCSymbolRefExpr::create(PICBase, OutContext)));
+
+ // Emit the label.
+ OutStreamer->EmitLabel(PICBase);
+ return;
+ }
+ case PPC::UpdateGBR: {
+ // Transform %Rd = UpdateGBR(%Rt, %Ri)
+ // Into: lwz %Rt, .L0$poff - .L0$pb(%Ri)
+ // add %Rd, %Rt, %Ri
+ // Get the offset from the GOT Base Register to the GOT
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin);
+ MCSymbol *PICOffset =
+ MF->getInfo<PPCFunctionInfo>()->getPICOffsetSymbol();
+ TmpInst.setOpcode(PPC::LWZ);
+ const MCExpr *Exp =
+ MCSymbolRefExpr::create(PICOffset, MCSymbolRefExpr::VK_None, OutContext);
+ const MCExpr *PB =
+ MCSymbolRefExpr::create(MF->getPICBaseSymbol(),
+ MCSymbolRefExpr::VK_None,
+ OutContext);
+ const MCOperand TR = TmpInst.getOperand(1);
+ const MCOperand PICR = TmpInst.getOperand(0);
+
+ // Step 1: lwz %Rt, .L$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 <ga:@min1>, %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 <ga:@min1>, %X2
+ 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.
+ TmpInst.setOpcode(PPC::LD);
+ 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());
+
+ MCSymbol *TOCEntry = lookUpOrCreateTOCEntry(MOSymbol);
+
+ const MCExpr *Exp =
+ MCSymbolRefExpr::create(TOCEntry, MCSymbolRefExpr::VK_PPC_TOC,
+ OutContext);
+ TmpInst.getOperand(1) = MCOperand::createExpr(Exp);
+ EmitToStreamer(*OutStreamer, TmpInst);
+ return;
+ }
+
+ case PPC::ADDIStocHA: {
+ // Transform %Xd = ADDIStocHA %X2, <ga:@sym>
+ 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 GlobalToc = false;
+
+ if (MO.isGlobal()) {
+ const GlobalValue *GV = MO.getGlobal();
+ MOSymbol = getSymbol(GV);
+ unsigned char GVFlags = Subtarget->classifyGlobalReference(GV);
+ GlobalToc = (GVFlags & PPCII::MO_NLP_FLAG);
+ } 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 (GlobalToc || 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::LDtocL: {
+ // Transform %Xd = LDtocL <ga:@sym>, %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 *GV = MO.getGlobal();
+ MOSymbol = getSymbol(GV);
+ DEBUG(
+ unsigned char GVFlags = Subtarget->classifyGlobalReference(GV);
+ assert((GVFlags & PPCII::MO_NLP_FLAG) &&
+ "LDtocL used on symbol that could be accessed directly is "
+ "invalid. Must match ADDIStocHA."));
+ 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, <ga:@sym>
+ 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;
+
+ if (MO.isGlobal()) {
+ const GlobalValue *GV = MO.getGlobal();
+ DEBUG(
+ unsigned char GVFlags = Subtarget->classifyGlobalReference(GV);
+ assert (
+ !(GVFlags & PPCII::MO_NLP_FLAG) &&
+ "Interposable definitions must use indirect access."));
+ MOSymbol = getSymbol(GV);
+ } else if (MO.isCPI()) {
+ MOSymbol = GetCPISymbol(MO.getIndex());
+ }
+
+ 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, <ga:@sym>
+ // 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 <ga:@sym>, %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, <ga:@sym>
+ // 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, <ga:@sym>
+ // Into: %Xd = ADDI8 %Xs, sym@got@tlsgd@l
+ case PPC::ADDItlsgdL32: {
+ // Transform: %Rd = ADDItlsgdL32 %Rs, <ga:@sym>
+ // 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::GETtlsADDR:
+ // Transform: %X3 = GETtlsADDR %X3, <ga:@sym>
+ // Into: BL8_NOP_TLS __tls_get_addr(sym at tlsgd)
+ case PPC::GETtlsADDR32: {
+ // Transform: %R3 = GETtlsADDR32 %R3, <ga:@sym>
+ // Into: BL_TLS __tls_get_addr(sym at tlsgd)@PLT
+ EmitTlsCall(MI, MCSymbolRefExpr::VK_PPC_TLSGD);
+ return;
+ }
+ case PPC::ADDIStlsldHA: {
+ // Transform: %Xd = ADDIStlsldHA %X2, <ga:@sym>
+ // 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, <ga:@sym>
+ // Into: %Xd = ADDI8 %Xs, sym@got@tlsld@l
+ case PPC::ADDItlsldL32: {
+ // Transform: %Rd = ADDItlsldL32 %Rs, <ga:@sym>
+ // 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::GETtlsldADDR:
+ // Transform: %X3 = GETtlsldADDR %X3, <ga:@sym>
+ // Into: BL8_NOP_TLS __tls_get_addr(sym at tlsld)
+ case PPC::GETtlsldADDR32: {
+ // Transform: %R3 = GETtlsldADDR32 %R3, <ga:@sym>
+ // Into: BL_TLS __tls_get_addr(sym at tlsld)@PLT
+ EmitTlsCall(MI, MCSymbolRefExpr::VK_PPC_TLSLD);
+ return;
+ }
+ case PPC::ADDISdtprelHA:
+ // Transform: %Xd = ADDISdtprelHA %Xs, <ga:@sym>
+ // Into: %Xd = ADDIS8 %Xs, sym@dtprel@ha
+ case PPC::ADDISdtprelHA32: {
+ // Transform: %Rd = ADDISdtprelHA32 %Rs, <ga:@sym>
+ // Into: %Rd = ADDIS %Rs, 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(MI->getOperand(1).getReg())
+ .addExpr(SymDtprel));
+ return;
+ }
+ case PPC::ADDIdtprelL:
+ // Transform: %Xd = ADDIdtprelL %Xs, <ga:@sym>
+ // Into: %Xd = ADDI8 %Xs, sym@dtprel@l
+ case PPC::ADDIdtprelL32: {
+ // Transform: %Rd = ADDIdtprelL32 %Rs, <ga:@sym>
+ // 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, isDarwin);
+ EmitToStreamer(*OutStreamer, TmpInst);
+}
+
+void PPCLinuxAsmPrinter::EmitStartOfAsmFile(Module &M) {
+ if (static_cast<const PPCTargetMachine &>(TM).isELFv2ABI()) {
+ PPCTargetStreamer *TS =
+ static_cast<PPCTargetStreamer *>(OutStreamer->getTargetStreamer());
+
+ if (TS)
+ TS->emitAbiVersion(2);
+ }
+
+ if (static_cast<const PPCTargetMachine &>(TM).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() {
+ // 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<PPCFunctionInfo>();
+ 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.
+ MCSectionSubPair Current = OutStreamer->getCurrentSection();
+ 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 = CurrentFnSymForSize;
+ // Generates a R_PPC64_ADDR64 (from FK_DATA_8) relocation for the function
+ // entry point.
+ OutStreamer->EmitValue(MCSymbolRefExpr::create(Symbol1, OutContext),
+ 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);
+}
+
+bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
+ const DataLayout &DL = getDataLayout();
+
+ bool isPPC64 = DL.getPointerSizeInBits() == 64;
+
+ PPCTargetStreamer &TS =
+ static_cast<PPCTargetStreamer &>(*OutStreamer->getTargetStreamer());
+
+ if (!TOC.empty()) {
+ 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);
+
+ for (MapVector<MCSymbol*, MCSymbol*>::iterator I = TOC.begin(),
+ E = TOC.end(); I != E; ++I) {
+ OutStreamer->EmitLabel(I->second);
+ MCSymbol *S = I->first;
+ if (isPPC64)
+ TS.emitTCEntry(*S);
+ else
+ OutStreamer->EmitSymbolValue(S, 4);
+ }
+ }
+
+ 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<PPCTargetStreamer *>(OutStreamer->getTargetStreamer());
+
+ if (TS)
+ TS->emitLocalEntry(cast<MCSymbolELF>(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[] = {
+ "",
+ "ppc",
+ "ppc440",
+ "ppc601",
+ "ppc602",
+ "ppc603",
+ "ppc7400",
+ "ppc750",
+ "ppc970",
+ "ppcA2",
+ "ppce500mc",
+ "ppce5500",
+ "power3",
+ "power4",
+ "power5",
+ "power5x",
+ "power6",
+ "power6x",
+ "power7",
+ "ppc64",
+ "ppc64le"
+ };
+
+ // Get the numerically largest directive.
+ // FIXME: How should we merge darwin directives?
+ unsigned Directive = PPC::DIR_NONE;
+ for (const Function &F : M) {
+ const PPCSubtarget &STI = TM.getSubtarget<PPCSubtarget>(F);
+ unsigned FDir = STI.getDarwinDirective();
+ Directive = Directive > FDir ? FDir : STI.getDarwinDirective();
+ if (STI.hasMFOCRF() && Directive < PPC::DIR_970)
+ Directive = PPC::DIR_970;
+ if (STI.hasAltivec() && Directive < PPC::DIR_7400)
+ Directive = PPC::DIR_7400;
+ if (STI.isPPC64() && Directive < PPC::DIR_64)
+ Directive = PPC::DIR_64;
+ }
+
+ assert(Directive <= PPC::DIR_64 && "Directive out of range.");
+
+ assert(Directive < array_lengthof(CPUDirectives) &&
+ "CPUDirectives[] might not be up-to-date!");
+ PPCTargetStreamer &TStreamer =
+ *static_cast<PPCTargetStreamer *>(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.
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ OutStreamer->SwitchSection(TLOFMacho.getTextCoalSection());
+ if (TM.getRelocationModel() == Reloc::PIC_) {
+ OutStreamer->SwitchSection(
+ OutContext.getMachOSection("__TEXT", "__picsymbolstub1",
+ 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",
+ MachO::S_SYMBOL_STUBS |
+ MachO::S_ATTR_PURE_INSTRUCTIONS,
+ 16, SectionKind::getText()));
+ }
+ OutStreamer->SwitchSection(getObjFileLowering().getTextSection());
+}
+
+static MCSymbol *GetLazyPtr(MCSymbol *Sym, MCContext &Ctx) {
+ // Remove $stub suffix, add $lazy_ptr.
+ StringRef NoStub = Sym->getName().substr(0, Sym->getName().size()-5);
+ return Ctx.getOrCreateSymbol(NoStub + "$lazy_ptr");
+}
+
+static MCSymbol *GetAnonSym(MCSymbol *Sym, MCContext &Ctx) {
+ // Add $tmp suffix to $stub, yielding $stub$tmp.
+ return Ctx.getOrCreateSymbol(Sym->getName() + "$tmp");
+}
+
+void PPCDarwinAsmPrinter::
+EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
+ bool isPPC64 = getDataLayout().getPointerSizeInBits() == 64;
+
+ // Construct a local MCSubtargetInfo and shadow EmitToStreamer here.
+ // This is because the MachineFunction won't exist (but have not yet been
+ // freed) and since we're at the global level we can use the default
+ // constructed subtarget.
+ std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo(
+ TM.getTargetTriple().str(), TM.getTargetCPU(),
+ TM.getTargetFeatureString()));
+ auto EmitToStreamer = [&STI] (MCStreamer &S, const MCInst &Inst) {
+ S.EmitInstruction(Inst, *STI);
+ };
+
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+
+ // .lazy_symbol_pointer
+ MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection();
+
+ // Output stubs for dynamically-linked functions
+ if (TM.getRelocationModel() == Reloc::PIC_) {
+ MCSection *StubSection = OutContext.getMachOSection(
+ "__TEXT", "__picsymbolstub1",
+ 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);
+ EmitAlignment(4);
+
+ MCSymbol *Stub = Stubs[i].first;
+ MCSymbol *RawSym = Stubs[i].second.getPointer();
+ MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext);
+ MCSymbol *AnonSymbol = GetAnonSym(Stub, OutContext);
+
+ OutStreamer->EmitLabel(Stub);
+ OutStreamer->EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
+
+ 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);
+ // mflr r11
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::MFLR).addReg(PPC::R11));
+ // addis r11, r11, ha16(LazyPtr - AnonSymbol)
+ const MCExpr *SubHa16 = PPCMCExpr::createHa(Sub, true, 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, true, 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);
+
+ 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;
+ }
+
+ MCSection *StubSection = OutContext.getMachOSection(
+ "__TEXT", "__symbol_stub1",
+ 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);
+
+ // lis r11, ha16(LazyPtr)
+ const MCExpr *LazyPtrHa16 =
+ PPCMCExpr::createHa(LazyPtrExpr, true, 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, true, 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);
+
+ 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();
+}
+
+bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
+ bool isPPC64 = getDataLayout().getPointerSizeInBits() == 64;
+
+ // Darwin/PPC always uses mach-o.
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ MachineModuleInfoMachO &MMIMacho =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>();
+
+ MachineModuleInfoMachO::SymbolListTy Stubs = MMIMacho.GetFnStubList();
+ if (!Stubs.empty())
+ EmitFunctionStubs(Stubs);
+
+ if (MAI->doesSupportExceptionHandling() && MMI) {
+ // Add the (possibly multiple) personalities to the set of global values.
+ // Only referenced functions get into the Personalities list.
+ for (const Function *Personality : MMI->getPersonalities()) {
+ if (Personality) {
+ MCSymbol *NLPSym =
+ getSymbolWithGlobalValueBase(Personality, "$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMIMacho.getGVStubEntry(NLPSym);
+ StubSym =
+ MachineModuleInfoImpl::StubValueTy(getSymbol(Personality), true);
+ }
+ }
+ }
+
+ // Output stubs for dynamically-linked functions.
+ Stubs = MMIMacho.GetGVStubList();
+
+ // Output macho stubs for external and common global variables.
+ if (!Stubs.empty()) {
+ // Switch with ".non_lazy_symbol_pointer" directive.
+ OutStreamer->SwitchSection(TLOFMacho.getNonLazySymbolPointerSection());
+ EmitAlignment(isPPC64 ? 3 : 2);
+
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ // L_foo$stub:
+ OutStreamer->EmitLabel(Stubs[i].first);
+ // .indirect_symbol _foo
+ MachineModuleInfoImpl::StubValueTy &MCSym = Stubs[i].second;
+ OutStreamer->EmitSymbolAttribute(MCSym.getPointer(), MCSA_IndirectSymbol);
+
+ if (MCSym.getInt())
+ // External to current translation unit.
+ OutStreamer->EmitIntValue(0, isPPC64 ? 8 : 4/*size*/);
+ else
+ // Internal to current translation unit.
+ //
+ // When we place the LSDA into the TEXT section, the type info pointers
+ // need to be indirect and pc-rel. We accomplish this by using NLPs.
+ // However, sometimes the types are local to the file. So we need to
+ // fill in the value for the NLP in those cases.
+ OutStreamer->EmitValue(MCSymbolRefExpr::create(MCSym.getPointer(),
+ OutContext),
+ isPPC64 ? 8 : 4/*size*/);
+ }
+
+ Stubs.clear();
+ OutStreamer->AddBlankLine();
+ }
+
+ Stubs = MMIMacho.GetHiddenGVStubList();
+ if (!Stubs.empty()) {
+ OutStreamer->SwitchSection(getObjFileLowering().getDataSection());
+ EmitAlignment(isPPC64 ? 3 : 2);
+
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ // L_foo$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();
+ }
+
+ // Funny Darwin hack: This flag tells the linker that no global symbols
+ // contain code that falls through to other global symbols (e.g. the obvious
+ // implementation of multiple entry points). If this doesn't occur, the
+ // linker can safely perform dead code stripping. Since LLVM never generates
+ // code that does this, it is always safe to set.
+ OutStreamer->EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
+
+ return AsmPrinter::doFinalization(M);
+}
+
+/// createPPCAsmPrinterPass - Returns a pass that prints the PPC assembly code
+/// for a MachineFunction to the given output stream, in a format that the
+/// Darwin assembler can deal with.
+///
+static AsmPrinter *
+createPPCAsmPrinterPass(TargetMachine &tm,
+ std::unique_ptr<MCStreamer> &&Streamer) {
+ if (tm.getTargetTriple().isMacOSX())
+ 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);
+}
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