MCOperand EpiphanyMCInstLower::
LowerSymbolOperand(const MachineOperand &MO, MCSymbol *Sym) const {
const MCExpr *Expr = MCSymbolRefExpr::create(Sym, Ctx);
switch (MO.getTargetFlags()) {
case EpiphanyII::MO_LO16:
Expr = EpiphanyMCExpr::createLo16(Expr, Ctx);
break;
case EpiphanyII::MO_HI16:
Expr = EpiphanyMCExpr::createHi16(Expr, Ctx);
break;
case EpiphanyII::MO_NO_FLAG:
// Expr is already correct
break;
default:
llvm_unreachable("Unexpected MachineOperand flag - lowersymboloperand");
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(Expr,
MCConstantExpr::create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::createExpr(Expr);
}
/// getMachineOpValue - Return binary encoding of operand. If the machine
/// operand requires relocation, record the relocation and return zero.
unsigned ARMCodeEmitter::getMachineOpValue(const MachineInstr &MI,
const MachineOperand &MO) {
if (MO.isReg())
return ARMRegisterInfo::getRegisterNumbering(MO.getReg());
else if (MO.isImm())
return static_cast<unsigned>(MO.getImm());
else if (MO.isGlobal())
emitGlobalAddress(MO.getGlobal(), ARM::reloc_arm_branch, true, false);
else if (MO.isSymbol())
emitExternalSymbolAddress(MO.getSymbolName(), ARM::reloc_arm_branch);
else if (MO.isCPI()) {
const TargetInstrDesc &TID = MI.getDesc();
// For VFP load, the immediate offset is multiplied by 4.
unsigned Reloc = ((TID.TSFlags & ARMII::FormMask) == ARMII::VFPLdStFrm)
? ARM::reloc_arm_vfp_cp_entry : ARM::reloc_arm_cp_entry;
emitConstPoolAddress(MO.getIndex(), Reloc);
} else if (MO.isJTI())
emitJumpTableAddress(MO.getIndex(), ARM::reloc_arm_relative);
else if (MO.isMBB())
emitMachineBasicBlock(MO.getMBB(), ARM::reloc_arm_branch);
else {
#ifndef NDEBUG
errs() << MO;
#endif
llvm_unreachable(0);
}
return 0;
}
MCOperand LanaiMCInstLower::LowerSymbolOperand(const MachineOperand &MO,
MCSymbol *Sym) const {
LanaiMCExpr::VariantKind Kind;
switch (MO.getTargetFlags()) {
case LanaiII::MO_NO_FLAG:
Kind = LanaiMCExpr::VK_Lanai_None;
break;
case LanaiII::MO_ABS_HI:
Kind = LanaiMCExpr::VK_Lanai_ABS_HI;
break;
case LanaiII::MO_ABS_LO:
Kind = LanaiMCExpr::VK_Lanai_ABS_LO;
break;
default:
llvm_unreachable("Unknown target flag on GV operand");
}
const MCExpr *Expr =
MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, Ctx);
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(
Expr, MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
Expr = LanaiMCExpr::create(Kind, Expr, Ctx);
return MCOperand::createExpr(Expr);
}
MachineRelocation PPCCodeEmitter::GetRelocation(const MachineOperand &MO,
unsigned RelocID) const {
// If in PIC mode, we need to encode the negated address of the
// 'movepctolr' into the unrelocated field. After relocation, we'll have
// &gv-&movepctolr-4 in the imm field. Once &movepctolr is added to the imm
// field, we get &gv. This doesn't happen for branch relocations, which are
// always implicitly pc relative.
intptr_t Cst = 0;
if (TM.getRelocationModel() == Reloc::PIC_) {
assert(MovePCtoLROffset && "MovePCtoLR not seen yet?");
Cst = -(intptr_t)MovePCtoLROffset - 4;
}
if (MO.isGlobal())
return MachineRelocation::getGV(MCE.getCurrentPCOffset(), RelocID,
const_cast<GlobalValue *>(MO.getGlobal()),
Cst, isa<Function>(MO.getGlobal()));
if (MO.isSymbol())
return MachineRelocation::getExtSym(MCE.getCurrentPCOffset(),
RelocID, MO.getSymbolName(), Cst);
if (MO.isCPI())
return MachineRelocation::getConstPool(MCE.getCurrentPCOffset(),
RelocID, MO.getIndex(), Cst);
if (MO.isMBB())
return MachineRelocation::getBB(MCE.getCurrentPCOffset(),
RelocID, MO.getMBB());
assert(MO.isJTI());
return MachineRelocation::getJumpTable(MCE.getCurrentPCOffset(),
RelocID, MO.getIndex(), Cst);
}
static MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol,
AsmPrinter &Printer, bool isDarwin) {
MCContext &Ctx = Printer.OutContext;
MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
if (MO.getTargetFlags() & PPCII::MO_LO16)
RefKind = isDarwin ? MCSymbolRefExpr::VK_PPC_DARWIN_LO16 : MCSymbolRefExpr::VK_PPC_GAS_LO16;
else if (MO.getTargetFlags() & PPCII::MO_HA16)
RefKind = isDarwin ? MCSymbolRefExpr::VK_PPC_DARWIN_HA16 : MCSymbolRefExpr::VK_PPC_GAS_HA16;
// FIXME: This isn't right, but we don't have a good way to express this in
// the MC Level, see below.
if (MO.getTargetFlags() & PPCII::MO_PIC_FLAG)
RefKind = MCSymbolRefExpr::VK_None;
const MCExpr *Expr = MCSymbolRefExpr::Create(Symbol, RefKind, Ctx);
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
// Subtract off the PIC base if required.
if (MO.getTargetFlags() & PPCII::MO_PIC_FLAG) {
const MachineFunction *MF = MO.getParent()->getParent()->getParent();
const MCExpr *PB = MCSymbolRefExpr::Create(MF->getPICBaseSymbol(), Ctx);
Expr = MCBinaryExpr::CreateSub(Expr, PB, Ctx);
// FIXME: We have no way to make the result be VK_PPC_LO16/VK_PPC_HA16,
// since it is not a symbol!
}
return MCOperand::CreateExpr(Expr);
}
MCOperand ARMAsmPrinter::GetSymbolRef(const MachineOperand &MO,
const MCSymbol *Symbol) {
MCSymbolRefExpr::VariantKind SymbolVariant = MCSymbolRefExpr::VK_None;
if (MO.getTargetFlags() & ARMII::MO_SBREL)
SymbolVariant = MCSymbolRefExpr::VK_ARM_SBREL;
const MCExpr *Expr =
MCSymbolRefExpr::create(Symbol, SymbolVariant, OutContext);
switch (MO.getTargetFlags() & ARMII::MO_OPTION_MASK) {
default:
llvm_unreachable("Unknown target flag on symbol operand");
case ARMII::MO_NO_FLAG:
break;
case ARMII::MO_LO16:
Expr =
MCSymbolRefExpr::create(Symbol, SymbolVariant, OutContext);
Expr = ARMMCExpr::createLower16(Expr, OutContext);
break;
case ARMII::MO_HI16:
Expr =
MCSymbolRefExpr::create(Symbol, SymbolVariant, OutContext);
Expr = ARMMCExpr::createUpper16(Expr, OutContext);
break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(Expr,
MCConstantExpr::create(MO.getOffset(),
OutContext),
OutContext);
return MCOperand::createExpr(Expr);
}
static MCOperand lowerSymbolOperand(const MachineOperand &MO, MCSymbol *Sym,
const AsmPrinter &AP) {
MCContext &Ctx = AP.OutContext;
RISCVMCExpr::VariantKind Kind;
switch (MO.getTargetFlags()) {
default:
llvm_unreachable("Unknown target flag on GV operand");
case RISCVII::MO_None:
Kind = RISCVMCExpr::VK_RISCV_None;
break;
case RISCVII::MO_LO:
Kind = RISCVMCExpr::VK_RISCV_LO;
break;
case RISCVII::MO_HI:
Kind = RISCVMCExpr::VK_RISCV_HI;
break;
}
const MCExpr *ME =
MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, Ctx);
if (!MO.isJTI() && MO.getOffset())
ME = MCBinaryExpr::createAdd(
ME, MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
ME = RISCVMCExpr::create(ME, Kind, Ctx);
return MCOperand::createExpr(ME);
}
/// getMachineOpValue - Return binary encoding of operand. If the machine
/// operand requires relocation, record the relocation and return zero.
unsigned MipsCodeEmitter::getMachineOpValue(const MachineInstr &MI,
const MachineOperand &MO) const {
if (MO.isReg())
return MipsRegisterInfo::getRegisterNumbering(MO.getReg());
else if (MO.isImm())
return static_cast<unsigned>(MO.getImm());
else if (MO.isGlobal()) {
if (MI.getOpcode() == Mips::ULW || MI.getOpcode() == Mips::USW ||
MI.getOpcode() == Mips::ULH || MI.getOpcode() == Mips::ULHu)
emitGlobalAddressUnaligned(MO.getGlobal(), getRelocation(MI, MO), 4);
else if (MI.getOpcode() == Mips::USH)
emitGlobalAddressUnaligned(MO.getGlobal(), getRelocation(MI, MO), 8);
else
emitGlobalAddress(MO.getGlobal(), getRelocation(MI, MO), true);
} else if (MO.isSymbol())
emitExternalSymbolAddress(MO.getSymbolName(), getRelocation(MI, MO));
else if (MO.isCPI())
emitConstPoolAddress(MO.getIndex(), getRelocation(MI, MO));
else if (MO.isJTI())
emitJumpTableAddress(MO.getIndex(), getRelocation(MI, MO));
else if (MO.isMBB())
emitMachineBasicBlock(MO.getMBB(), getRelocation(MI, MO));
else
llvm_unreachable("Unable to encode MachineOperand!");
return 0;
}
static MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol,
ARMAsmPrinter &Printer) {
MCContext &Ctx = Printer.OutContext;
const MCExpr *Expr;
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on symbol operand");
case 0:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
break;
case ARMII::MO_LO16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_LO16, Ctx);
break;
case ARMII::MO_HI16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_HI16, Ctx);
break;
case ARMII::MO_PLT:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_PLT, Ctx);
break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::CreateExpr(Expr);
}
MCOperand AArch64MCInstLower::lowerSymbolOperandDarwin(const MachineOperand &MO,
MCSymbol *Sym) const {
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
if ((MO.getTargetFlags() & AArch64II::MO_GOT) != 0) {
if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_PAGE)
RefKind = MCSymbolRefExpr::VK_GOTPAGE;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) ==
AArch64II::MO_PAGEOFF)
RefKind = MCSymbolRefExpr::VK_GOTPAGEOFF;
else
llvm_unreachable("Unexpected target flags with MO_GOT on GV operand");
} else if ((MO.getTargetFlags() & AArch64II::MO_TLS) != 0) {
if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_PAGE)
RefKind = MCSymbolRefExpr::VK_TLVPPAGE;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) ==
AArch64II::MO_PAGEOFF)
RefKind = MCSymbolRefExpr::VK_TLVPPAGEOFF;
else
llvm_unreachable("Unexpected target flags with MO_TLS on GV operand");
} else {
if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_PAGE)
RefKind = MCSymbolRefExpr::VK_PAGE;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) ==
AArch64II::MO_PAGEOFF)
RefKind = MCSymbolRefExpr::VK_PAGEOFF;
}
const MCExpr *Expr = MCSymbolRefExpr::create(Sym, RefKind, Ctx);
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(
Expr, MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
return MCOperand::createExpr(Expr);
}
static bool isSimilarDispOp(const MachineOperand &MO1,
const MachineOperand &MO2) {
assert(isValidDispOp(MO1) && isValidDispOp(MO2) &&
"Address displacement operand is not valid");
return (MO1.isImm() && MO2.isImm()) ||
(MO1.isCPI() && MO2.isCPI() && MO1.getIndex() == MO2.getIndex()) ||
(MO1.isJTI() && MO2.isJTI() && MO1.getIndex() == MO2.getIndex()) ||
(MO1.isSymbol() && MO2.isSymbol() &&
MO1.getSymbolName() == MO2.getSymbolName()) ||
(MO1.isGlobal() && MO2.isGlobal() &&
MO1.getGlobal() == MO2.getGlobal()) ||
(MO1.isBlockAddress() && MO2.isBlockAddress() &&
MO1.getBlockAddress() == MO2.getBlockAddress()) ||
(MO1.isMCSymbol() && MO2.isMCSymbol() &&
MO1.getMCSymbol() == MO2.getMCSymbol()) ||
(MO1.isMBB() && MO2.isMBB() && MO1.getMBB() == MO2.getMBB());
}
static MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol,
AsmPrinter &Printer, bool isDarwin) {
MCContext &Ctx = Printer.OutContext;
MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
unsigned access = MO.getTargetFlags() & PPCII::MO_ACCESS_MASK;
switch (access) {
case PPCII::MO_TPREL_LO:
RefKind = MCSymbolRefExpr::VK_PPC_TPREL_LO;
break;
case PPCII::MO_TPREL_HA:
RefKind = MCSymbolRefExpr::VK_PPC_TPREL_HA;
break;
case PPCII::MO_DTPREL_LO:
RefKind = MCSymbolRefExpr::VK_PPC_DTPREL_LO;
break;
case PPCII::MO_TLSLD_LO:
RefKind = MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO;
break;
case PPCII::MO_TOC_LO:
RefKind = MCSymbolRefExpr::VK_PPC_TOC_LO;
break;
case PPCII::MO_TLS:
RefKind = MCSymbolRefExpr::VK_PPC_TLS;
break;
}
if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB && !isDarwin)
RefKind = MCSymbolRefExpr::VK_PLT;
const MCExpr *Expr = MCSymbolRefExpr::create(Symbol, RefKind, Ctx);
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(Expr,
MCConstantExpr::create(MO.getOffset(), Ctx),
Ctx);
// Subtract off the PIC base if required.
if (MO.getTargetFlags() & PPCII::MO_PIC_FLAG) {
const MachineFunction *MF = MO.getParent()->getParent()->getParent();
const MCExpr *PB = MCSymbolRefExpr::create(MF->getPICBaseSymbol(), Ctx);
Expr = MCBinaryExpr::createSub(Expr, PB, Ctx);
}
// Add ha16() / lo16() markers if required.
switch (access) {
case PPCII::MO_LO:
Expr = PPCMCExpr::createLo(Expr, isDarwin, Ctx);
break;
case PPCII::MO_HA:
Expr = PPCMCExpr::createHa(Expr, isDarwin, Ctx);
break;
}
return MCOperand::createExpr(Expr);
}
MCOperand ARMMCInstLower::
LowerSymbolRefOperand(const MachineOperand &MO,
const MCSymbolRefExpr *Sym) const {
const MCExpr *Expr = Sym;
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::CreateExpr(Expr);
}
MCOperand WebAssemblyMCInstLower::LowerSymbolOperand(const MachineOperand &MO,
MCSymbol *Sym) const {
const MCExpr *Expr = MCSymbolRefExpr::create(Sym, Ctx);
if (!MO.isJTI() && MO.getOffset())
llvm_unreachable("unknown symbol op");
return MCOperand::createExpr(Expr);
}
static MCOperand GetSymbolRef(const MachineOperand& MO, const MCSymbol* Symbol,
HexagonAsmPrinter& Printer) {
MCContext &MC = Printer.OutContext;
const MCExpr *ME;
ME = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, MC);
if (!MO.isJTI() && MO.getOffset())
ME = MCBinaryExpr::CreateAdd(ME, MCConstantExpr::Create(MO.getOffset(), MC),
MC);
return (MCOperand::createExpr(ME));
}
MCOperand AArch64MCInstLower::lowerSymbolOperandCOFF(const MachineOperand &MO,
MCSymbol *Sym) const {
uint32_t RefFlags = 0;
if (MO.getTargetFlags() & AArch64II::MO_TLS) {
if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_PAGEOFF)
RefFlags |= AArch64MCExpr::VK_SECREL_LO12;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) ==
AArch64II::MO_HI12)
RefFlags |= AArch64MCExpr::VK_SECREL_HI12;
} else if (MO.getTargetFlags() & AArch64II::MO_S) {
RefFlags |= AArch64MCExpr::VK_SABS;
} else {
RefFlags |= AArch64MCExpr::VK_ABS;
}
if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G3)
RefFlags |= AArch64MCExpr::VK_G3;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G2)
RefFlags |= AArch64MCExpr::VK_G2;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G1)
RefFlags |= AArch64MCExpr::VK_G1;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G0)
RefFlags |= AArch64MCExpr::VK_G0;
// FIXME: Currently we only set VK_NC for MO_G3/MO_G2/MO_G1/MO_G0. This is
// because setting VK_NC for others would mean setting their respective
// RefFlags correctly. We should do this in a separate patch.
if (MO.getTargetFlags() & AArch64II::MO_NC) {
auto MOFrag = (MO.getTargetFlags() & AArch64II::MO_FRAGMENT);
if (MOFrag == AArch64II::MO_G3 || MOFrag == AArch64II::MO_G2 ||
MOFrag == AArch64II::MO_G1 || MOFrag == AArch64II::MO_G0)
RefFlags |= AArch64MCExpr::VK_NC;
}
const MCExpr *Expr =
MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, Ctx);
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(
Expr, MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
auto RefKind = static_cast<AArch64MCExpr::VariantKind>(RefFlags);
assert(RefKind != AArch64MCExpr::VK_INVALID &&
"Invalid relocation requested");
Expr = AArch64MCExpr::create(Expr, RefKind, Ctx);
return MCOperand::createExpr(Expr);
}
void HexagonCopyToCombine::emitCombineRI(MachineBasicBlock::iterator &InsertPt,
unsigned DoubleDestReg,
MachineOperand &HiOperand,
MachineOperand &LoOperand) {
unsigned HiRegKillFlag = getKillRegState(HiOperand.isKill());
unsigned HiReg = HiOperand.getReg();
DebugLoc DL = InsertPt->getDebugLoc();
MachineBasicBlock *BB = InsertPt->getParent();
// Handle global.
if (LoOperand.isGlobal()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineri), DoubleDestReg)
.addReg(HiReg, HiRegKillFlag)
.addGlobalAddress(LoOperand.getGlobal(), LoOperand.getOffset(),
LoOperand.getTargetFlags());
return;
}
// Handle block addresses.
if (LoOperand.isBlockAddress()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineri), DoubleDestReg)
.addReg(HiReg, HiRegKillFlag)
.addBlockAddress(LoOperand.getBlockAddress(), LoOperand.getOffset(),
LoOperand.getTargetFlags());
return;
}
// Handle jump tables.
if (LoOperand.isJTI()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineri), DoubleDestReg)
.addReg(HiOperand.getReg(), HiRegKillFlag)
.addJumpTableIndex(LoOperand.getIndex(), LoOperand.getTargetFlags());
return;
}
// Handle constant pools.
if (LoOperand.isCPI()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineri), DoubleDestReg)
.addReg(HiOperand.getReg(), HiRegKillFlag)
.addConstantPoolIndex(LoOperand.getIndex(), LoOperand.getOffset(),
LoOperand.getTargetFlags());
return;
}
// Insert new combine instruction.
// DoubleRegDest = combine HiReg, #LoImm
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineri), DoubleDestReg)
.addReg(HiReg, HiRegKillFlag)
.addImm(LoOperand.getImm());
}
MCOperand MSP430MCInstLower::
LowerSymbolOperand(const MachineOperand &MO, MCSymbol *Sym) const {
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, Ctx);
switch (MO.getTargetFlags()) {
default: llvm_unreachable("Unknown target flag on GV operand");
case 0: break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::CreateExpr(Expr);
}
/// getMachineOpValue - Return binary encoding of operand. If the machine
/// operand requires relocation, record the relocation and return zero.
unsigned MipsCodeEmitter::getMachineOpValue(const MachineInstr &MI,
const MachineOperand &MO) const {
if (MO.isReg())
return TM.getRegisterInfo()->getEncodingValue(MO.getReg());
else if (MO.isImm())
return static_cast<unsigned>(MO.getImm());
else if (MO.isGlobal())
emitGlobalAddress(MO.getGlobal(), getRelocation(MI, MO), true);
else if (MO.isSymbol())
emitExternalSymbolAddress(MO.getSymbolName(), getRelocation(MI, MO));
else if (MO.isCPI())
emitConstPoolAddress(MO.getIndex(), getRelocation(MI, MO));
else if (MO.isJTI())
emitJumpTableAddress(MO.getIndex(), getRelocation(MI, MO));
else if (MO.isMBB())
emitMachineBasicBlock(MO.getMBB(), getRelocation(MI, MO));
else
llvm_unreachable("Unable to encode MachineOperand!");
return 0;
}
MCOperand ARMAsmPrinter::GetSymbolRef(const MachineOperand &MO,
const MCSymbol *Symbol) {
const MCExpr *Expr;
switch (MO.getTargetFlags()) {
default: {
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
OutContext);
switch (MO.getTargetFlags()) {
default:
assert(0 && "Unknown target flag on symbol operand");
case 0:
break;
case ARMII::MO_LO16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
OutContext);
Expr = ARMMCExpr::CreateLower16(Expr, OutContext);
break;
case ARMII::MO_HI16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
OutContext);
Expr = ARMMCExpr::CreateUpper16(Expr, OutContext);
break;
}
break;
}
case ARMII::MO_PLT:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_PLT,
OutContext);
break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(),
OutContext),
OutContext);
return MCOperand::CreateExpr(Expr);
}
MCOperand ARMAsmPrinter::GetSymbolRef(const MachineOperand &MO,
const MCSymbol *Symbol) {
const MCExpr *Expr;
unsigned Option = MO.getTargetFlags() & ARMII::MO_OPTION_MASK;
switch (Option) {
default: {
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
OutContext);
switch (Option) {
default: llvm_unreachable("Unknown target flag on symbol operand");
case ARMII::MO_NO_FLAG:
break;
case ARMII::MO_LO16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
OutContext);
Expr = ARMMCExpr::CreateLower16(Expr, OutContext);
break;
case ARMII::MO_HI16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
OutContext);
Expr = ARMMCExpr::CreateUpper16(Expr, OutContext);
break;
}
break;
}
case ARMII::MO_PLT:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_PLT,
OutContext);
break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(),
OutContext),
OutContext);
return MCOperand::CreateExpr(Expr);
}
static bool isValidDispOp(const MachineOperand &MO) {
return MO.isImm() || MO.isCPI() || MO.isJTI() || MO.isSymbol() ||
MO.isGlobal() || MO.isBlockAddress() || MO.isMCSymbol() || MO.isMBB();
}
MCOperand X86MCInstLower::LowerSymbolOperand(const MachineOperand &MO,
MCSymbol *Sym) const {
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
const MCExpr *Expr = 0;
MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
switch (MO.getTargetFlags()) {
default: llvm_unreachable("Unknown target flag on GV operand");
case X86II::MO_NO_FLAG: // No flag.
// These affect the name of the symbol, not any suffix.
case X86II::MO_DARWIN_NONLAZY:
case X86II::MO_DLLIMPORT:
case X86II::MO_DARWIN_STUB:
break;
case X86II::MO_TLVP: RefKind = MCSymbolRefExpr::VK_TLVP; break;
case X86II::MO_TLVP_PIC_BASE:
Expr = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_TLVP, Ctx);
// Subtract the pic base.
Expr = MCBinaryExpr::CreateSub(Expr,
MCSymbolRefExpr::Create(MF.getPICBaseSymbol(),
Ctx),
Ctx);
break;
case X86II::MO_SECREL: RefKind = MCSymbolRefExpr::VK_SECREL; break;
case X86II::MO_TLSGD: RefKind = MCSymbolRefExpr::VK_TLSGD; break;
case X86II::MO_TLSLD: RefKind = MCSymbolRefExpr::VK_TLSLD; break;
case X86II::MO_TLSLDM: RefKind = MCSymbolRefExpr::VK_TLSLDM; break;
case X86II::MO_GOTTPOFF: RefKind = MCSymbolRefExpr::VK_GOTTPOFF; break;
case X86II::MO_INDNTPOFF: RefKind = MCSymbolRefExpr::VK_INDNTPOFF; break;
case X86II::MO_TPOFF: RefKind = MCSymbolRefExpr::VK_TPOFF; break;
case X86II::MO_DTPOFF: RefKind = MCSymbolRefExpr::VK_DTPOFF; break;
case X86II::MO_NTPOFF: RefKind = MCSymbolRefExpr::VK_NTPOFF; break;
case X86II::MO_GOTNTPOFF: RefKind = MCSymbolRefExpr::VK_GOTNTPOFF; break;
case X86II::MO_GOTPCREL: RefKind = MCSymbolRefExpr::VK_GOTPCREL; break;
case X86II::MO_GOT: RefKind = MCSymbolRefExpr::VK_GOT; break;
case X86II::MO_GOTOFF: RefKind = MCSymbolRefExpr::VK_GOTOFF; break;
case X86II::MO_PLT: RefKind = MCSymbolRefExpr::VK_PLT; break;
case X86II::MO_PIC_BASE_OFFSET:
case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
Expr = MCSymbolRefExpr::Create(Sym, Ctx);
// Subtract the pic base.
Expr = MCBinaryExpr::CreateSub(Expr,
MCSymbolRefExpr::Create(MF.getPICBaseSymbol(), Ctx),
Ctx);
if (MO.isJTI() && MAI.hasSetDirective()) {
// If .set directive is supported, use it to reduce the number of
// relocations the assembler will generate for differences between
// local labels. This is only safe when the symbols are in the same
// section so we are restricting it to jumptable references.
MCSymbol *Label = Ctx.CreateTempSymbol();
AsmPrinter.OutStreamer.EmitAssignment(Label, Expr);
Expr = MCSymbolRefExpr::Create(Label, Ctx);
}
break;
}
if (Expr == 0)
Expr = MCSymbolRefExpr::Create(Sym, RefKind, Ctx);
if (!MO.isJTI() && !MO.isMBB() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::CreateExpr(Expr);
}
void HexagonCopyToCombine::emitCombineII(MachineBasicBlock::iterator &InsertPt,
unsigned DoubleDestReg,
MachineOperand &HiOperand,
MachineOperand &LoOperand) {
DebugLoc DL = InsertPt->getDebugLoc();
MachineBasicBlock *BB = InsertPt->getParent();
// Handle globals.
if (HiOperand.isGlobal()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A2_combineii), DoubleDestReg)
.addGlobalAddress(HiOperand.getGlobal(), HiOperand.getOffset(),
HiOperand.getTargetFlags())
.addImm(LoOperand.getImm());
return;
}
if (LoOperand.isGlobal()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addGlobalAddress(LoOperand.getGlobal(), LoOperand.getOffset(),
LoOperand.getTargetFlags());
return;
}
// Handle block addresses.
if (HiOperand.isBlockAddress()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A2_combineii), DoubleDestReg)
.addBlockAddress(HiOperand.getBlockAddress(), HiOperand.getOffset(),
HiOperand.getTargetFlags())
.addImm(LoOperand.getImm());
return;
}
if (LoOperand.isBlockAddress()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addBlockAddress(LoOperand.getBlockAddress(), LoOperand.getOffset(),
LoOperand.getTargetFlags());
return;
}
// Handle jump tables.
if (HiOperand.isJTI()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A2_combineii), DoubleDestReg)
.addJumpTableIndex(HiOperand.getIndex(), HiOperand.getTargetFlags())
.addImm(LoOperand.getImm());
return;
}
if (LoOperand.isJTI()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addJumpTableIndex(LoOperand.getIndex(), LoOperand.getTargetFlags());
return;
}
// Handle constant pools.
if (HiOperand.isCPI()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A2_combineii), DoubleDestReg)
.addConstantPoolIndex(HiOperand.getIndex(), HiOperand.getOffset(),
HiOperand.getTargetFlags())
.addImm(LoOperand.getImm());
return;
}
if (LoOperand.isCPI()) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addConstantPoolIndex(LoOperand.getIndex(), LoOperand.getOffset(),
LoOperand.getTargetFlags());
return;
}
// First preference should be given to Hexagon::A2_combineii instruction
// as it can include U6 (in Hexagon::A4_combineii) as well.
// In this instruction, HiOperand is const extended, if required.
if (isInt<8>(LoOperand.getImm())) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A2_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addImm(LoOperand.getImm());
return;
}
// In this instruction, LoOperand is const extended, if required.
if (isInt<8>(HiOperand.getImm())) {
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A4_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addImm(LoOperand.getImm());
return;
}
// Insert new combine instruction.
// DoubleRegDest = combine #HiImm, #LoImm
BuildMI(*BB, InsertPt, DL, TII->get(Hexagon::A2_combineii), DoubleDestReg)
.addImm(HiOperand.getImm())
.addImm(LoOperand.getImm());
}
MCOperand AArch64MCInstLower::lowerSymbolOperandELF(const MachineOperand &MO,
MCSymbol *Sym) const {
uint32_t RefFlags = 0;
if (MO.getTargetFlags() & AArch64II::MO_GOT)
RefFlags |= AArch64MCExpr::VK_GOT;
else if (MO.getTargetFlags() & AArch64II::MO_TLS) {
TLSModel::Model Model;
if (MO.isGlobal()) {
const GlobalValue *GV = MO.getGlobal();
Model = Printer.TM.getTLSModel(GV);
if (!EnableAArch64ELFLocalDynamicTLSGeneration &&
Model == TLSModel::LocalDynamic)
Model = TLSModel::GeneralDynamic;
} else {
assert(MO.isSymbol() &&
StringRef(MO.getSymbolName()) == "_TLS_MODULE_BASE_" &&
"unexpected external TLS symbol");
// The general dynamic access sequence is used to get the
// address of _TLS_MODULE_BASE_.
Model = TLSModel::GeneralDynamic;
}
switch (Model) {
case TLSModel::InitialExec:
RefFlags |= AArch64MCExpr::VK_GOTTPREL;
break;
case TLSModel::LocalExec:
RefFlags |= AArch64MCExpr::VK_TPREL;
break;
case TLSModel::LocalDynamic:
RefFlags |= AArch64MCExpr::VK_DTPREL;
break;
case TLSModel::GeneralDynamic:
RefFlags |= AArch64MCExpr::VK_TLSDESC;
break;
}
} else {
// No modifier means this is a generic reference, classified as absolute for
// the cases where it matters (:abs_g0: etc).
RefFlags |= AArch64MCExpr::VK_ABS;
}
if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_PAGE)
RefFlags |= AArch64MCExpr::VK_PAGE;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) ==
AArch64II::MO_PAGEOFF)
RefFlags |= AArch64MCExpr::VK_PAGEOFF;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G3)
RefFlags |= AArch64MCExpr::VK_G3;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G2)
RefFlags |= AArch64MCExpr::VK_G2;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G1)
RefFlags |= AArch64MCExpr::VK_G1;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_G0)
RefFlags |= AArch64MCExpr::VK_G0;
else if ((MO.getTargetFlags() & AArch64II::MO_FRAGMENT) == AArch64II::MO_HI12)
RefFlags |= AArch64MCExpr::VK_HI12;
if (MO.getTargetFlags() & AArch64II::MO_NC)
RefFlags |= AArch64MCExpr::VK_NC;
const MCExpr *Expr =
MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, Ctx);
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(
Expr, MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
AArch64MCExpr::VariantKind RefKind;
RefKind = static_cast<AArch64MCExpr::VariantKind>(RefFlags);
Expr = AArch64MCExpr::create(Expr, RefKind, Ctx);
return MCOperand::createExpr(Expr);
}
MCOperand
AArch64AsmPrinter::lowerSymbolOperand(const MachineOperand &MO,
const MCSymbol *Sym) const {
const MCExpr *Expr = 0;
Expr = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_None, OutContext);
switch (MO.getTargetFlags()) {
case AArch64II::MO_GOT:
Expr = AArch64MCExpr::CreateGOT(Expr, OutContext);
break;
case AArch64II::MO_GOT_LO12:
Expr = AArch64MCExpr::CreateGOTLo12(Expr, OutContext);
break;
case AArch64II::MO_LO12:
Expr = AArch64MCExpr::CreateLo12(Expr, OutContext);
break;
case AArch64II::MO_DTPREL_G1:
Expr = AArch64MCExpr::CreateDTPREL_G1(Expr, OutContext);
break;
case AArch64II::MO_DTPREL_G0_NC:
Expr = AArch64MCExpr::CreateDTPREL_G0_NC(Expr, OutContext);
break;
case AArch64II::MO_GOTTPREL:
Expr = AArch64MCExpr::CreateGOTTPREL(Expr, OutContext);
break;
case AArch64II::MO_GOTTPREL_LO12:
Expr = AArch64MCExpr::CreateGOTTPRELLo12(Expr, OutContext);
break;
case AArch64II::MO_TLSDESC:
Expr = AArch64MCExpr::CreateTLSDesc(Expr, OutContext);
break;
case AArch64II::MO_TLSDESC_LO12:
Expr = AArch64MCExpr::CreateTLSDescLo12(Expr, OutContext);
break;
case AArch64II::MO_TPREL_G1:
Expr = AArch64MCExpr::CreateTPREL_G1(Expr, OutContext);
break;
case AArch64II::MO_TPREL_G0_NC:
Expr = AArch64MCExpr::CreateTPREL_G0_NC(Expr, OutContext);
break;
case AArch64II::MO_ABS_G3:
Expr = AArch64MCExpr::CreateABS_G3(Expr, OutContext);
break;
case AArch64II::MO_ABS_G2_NC:
Expr = AArch64MCExpr::CreateABS_G2_NC(Expr, OutContext);
break;
case AArch64II::MO_ABS_G1_NC:
Expr = AArch64MCExpr::CreateABS_G1_NC(Expr, OutContext);
break;
case AArch64II::MO_ABS_G0_NC:
Expr = AArch64MCExpr::CreateABS_G0_NC(Expr, OutContext);
break;
case AArch64II::MO_NO_FLAG:
// Expr is already correct
break;
default:
llvm_unreachable("Unexpected MachineOperand flag");
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(),
OutContext),
OutContext);
return MCOperand::CreateExpr(Expr);
}