using namespace llvm;
ARMInstrInfo::ARMInstrInfo(const ARMSubtarget &STI)
- : ARMBaseInstrInfo(STI), RI(STI) {
-}
+ : ARMBaseInstrInfo(STI), RI() {}
/// getNoopForMachoTarget - Return the noop instruction to use for a noop.
void ARMInstrInfo::getNoopForMachoTarget(MCInst &NopInst) const {
if (hasNOP()) {
NopInst.setOpcode(ARM::HINT);
- NopInst.addOperand(MCOperand::CreateImm(0));
- NopInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
- NopInst.addOperand(MCOperand::CreateReg(0));
+ NopInst.addOperand(MCOperand::createImm(0));
+ NopInst.addOperand(MCOperand::createImm(ARMCC::AL));
+ NopInst.addOperand(MCOperand::createReg(0));
} else {
NopInst.setOpcode(ARM::MOVr);
- NopInst.addOperand(MCOperand::CreateReg(ARM::R0));
- NopInst.addOperand(MCOperand::CreateReg(ARM::R0));
- NopInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
- NopInst.addOperand(MCOperand::CreateReg(0));
- NopInst.addOperand(MCOperand::CreateReg(0));
+ NopInst.addOperand(MCOperand::createReg(ARM::R0));
+ NopInst.addOperand(MCOperand::createReg(ARM::R0));
+ NopInst.addOperand(MCOperand::createImm(ARMCC::AL));
+ NopInst.addOperand(MCOperand::createReg(0));
+ NopInst.addOperand(MCOperand::createReg(0));
}
}
void ARMInstrInfo::expandLoadStackGuard(MachineBasicBlock::iterator MI,
Reloc::Model RM) const {
- if (RM == Reloc::PIC_)
- expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_pcrel, ARM::LDRi12, RM);
- else
- expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_abs, ARM::LDRi12, RM);
-}
-
-bool ARMInstrInfo::getRegSequenceLikeInputs(
- const MachineInstr &MI, unsigned DefIdx,
- SmallVectorImpl<RegSubRegPairAndIdx> &InputRegs) const {
- assert(DefIdx < MI.getDesc().getNumDefs() && "Invalid definition index");
- assert(MI.isRegSequenceLike() && "Invalid kind of instruction");
-
- switch (MI.getOpcode()) {
- case ARM::VMOVDRR:
- // dX = VMOVDRR rY, rZ
- // is the same as:
- // dX = REG_SEQUENCE rY, ssub_0, rZ, ssub_1
- // Populate the InputRegs accordingly.
- // rY
- const MachineOperand *MOReg = &MI.getOperand(1);
- InputRegs.push_back(
- RegSubRegPairAndIdx(MOReg->getReg(), MOReg->getSubReg(), ARM::ssub_0));
- // rZ
- MOReg = &MI.getOperand(2);
- InputRegs.push_back(
- RegSubRegPairAndIdx(MOReg->getReg(), MOReg->getSubReg(), ARM::ssub_1));
- return true;
+ MachineFunction &MF = *MI->getParent()->getParent();
+ const ARMSubtarget &Subtarget = MF.getSubtarget<ARMSubtarget>();
+
+ if (!Subtarget.useMovt(MF)) {
+ if (RM == Reloc::PIC_)
+ expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_pcrel, ARM::LDRi12, RM);
+ else
+ expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_abs, ARM::LDRi12, RM);
+ return;
}
- llvm_unreachable("Target dependent opcode missing");
-}
-bool ARMInstrInfo::getExtractSubregLikeInputs(
- const MachineInstr &MI, unsigned DefIdx,
- RegSubRegPairAndIdx &InputReg) const {
- assert(DefIdx < MI.getDesc().getNumDefs() && "Invalid definition index");
- assert(MI.isExtractSubregLike() && "Invalid kind of instruction");
-
- switch (MI.getOpcode()) {
- case ARM::VMOVRRD:
- // rX, rY = VMOVRRD dZ
- // is the same as:
- // rX = EXTRACT_SUBREG dZ, ssub_0
- // rY = EXTRACT_SUBREG dZ, ssub_1
- const MachineOperand &MOReg = MI.getOperand(2);
- InputReg.Reg = MOReg.getReg();
- InputReg.SubReg = MOReg.getSubReg();
- InputReg.SubIdx = DefIdx == 0 ? ARM::ssub_0 : ARM::ssub_1;
- return true;
+ if (RM != Reloc::PIC_) {
+ expandLoadStackGuardBase(MI, ARM::MOVi32imm, ARM::LDRi12, RM);
+ return;
}
- llvm_unreachable("Target dependent opcode missing");
-}
-bool ARMInstrInfo::getInsertSubregLikeInputs(
- const MachineInstr &MI, unsigned DefIdx, RegSubRegPair &BaseReg,
- RegSubRegPairAndIdx &InsertedReg) const {
- assert(DefIdx < MI.getDesc().getNumDefs() && "Invalid definition index");
- assert(MI.isInsertSubregLike() && "Invalid kind of instruction");
-
- switch (MI.getOpcode()) {
- case ARM::VSETLNi32:
- // dX = VSETLNi32 dY, rZ, imm
- const MachineOperand &MOBaseReg = MI.getOperand(1);
- const MachineOperand &MOInsertedReg = MI.getOperand(2);
- const MachineOperand &MOIndex = MI.getOperand(3);
- BaseReg.Reg = MOBaseReg.getReg();
- BaseReg.SubReg = MOBaseReg.getSubReg();
-
- InsertedReg.Reg = MOInsertedReg.getReg();
- InsertedReg.SubReg = MOInsertedReg.getSubReg();
- InsertedReg.SubIdx = MOIndex.getImm() == 0 ? ARM::ssub_0 : ARM::ssub_1;
- return true;
+ const GlobalValue *GV =
+ cast<GlobalValue>((*MI->memoperands_begin())->getValue());
+
+ if (!Subtarget.GVIsIndirectSymbol(GV, RM)) {
+ expandLoadStackGuardBase(MI, ARM::MOV_ga_pcrel, ARM::LDRi12, RM);
+ return;
}
- llvm_unreachable("Target dependent opcode missing");
+
+ MachineBasicBlock &MBB = *MI->getParent();
+ DebugLoc DL = MI->getDebugLoc();
+ unsigned Reg = MI->getOperand(0).getReg();
+ MachineInstrBuilder MIB;
+
+ MIB = BuildMI(MBB, MI, DL, get(ARM::MOV_ga_pcrel_ldr), Reg)
+ .addGlobalAddress(GV, 0, ARMII::MO_NONLAZY);
+ unsigned Flag = MachineMemOperand::MOLoad | MachineMemOperand::MOInvariant;
+ MachineMemOperand *MMO = MBB.getParent()->getMachineMemOperand(
+ MachinePointerInfo::getGOT(*MBB.getParent()), Flag, 4, 4);
+ MIB.addMemOperand(MMO);
+ MIB = BuildMI(MBB, MI, DL, get(ARM::LDRi12), Reg);
+ MIB.addReg(Reg, RegState::Kill).addImm(0);
+ MIB.setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
+ AddDefaultPred(MIB);
}
namespace {
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
if (AFI->getGlobalBaseReg() == 0)
return false;
-
- const ARMTargetMachine *TM =
- static_cast<const ARMTargetMachine *>(&MF.getTarget());
- if (TM->getRelocationModel() != Reloc::PIC_)
+ const ARMSubtarget &STI =
+ static_cast<const ARMSubtarget &>(MF.getSubtarget());
+ // Don't do this for Thumb1.
+ if (STI.isThumb1Only())
+ return false;
+
+ const TargetMachine &TM = MF.getTarget();
+ if (TM.getRelocationModel() != Reloc::PIC_)
return false;
LLVMContext *Context = &MF.getFunction()->getContext();
unsigned ARMPCLabelIndex = AFI->createPICLabelUId();
- unsigned PCAdj = TM->getSubtarget<ARMSubtarget>().isThumb() ? 4 : 8;
+ unsigned PCAdj = STI.isThumb() ? 4 : 8;
ARMConstantPoolValue *CPV = ARMConstantPoolSymbol::Create(
*Context, "_GLOBAL_OFFSET_TABLE_", ARMPCLabelIndex, PCAdj);
- unsigned Align =
- TM->getSubtargetImpl()->getDataLayout()->getPrefTypeAlignment(
- Type::getInt32PtrTy(*Context));
+ unsigned Align = MF.getDataLayout().getPrefTypeAlignment(
+ Type::getInt32PtrTy(*Context));
unsigned Idx = MF.getConstantPool()->getConstantPoolIndex(CPV, Align);
MachineBasicBlock &FirstMBB = MF.front();
DebugLoc DL = FirstMBB.findDebugLoc(MBBI);
unsigned TempReg =
MF.getRegInfo().createVirtualRegister(&ARM::rGPRRegClass);
- unsigned Opc = TM->getSubtarget<ARMSubtarget>().isThumb2() ?
- ARM::t2LDRpci : ARM::LDRcp;
- const TargetInstrInfo &TII = *TM->getSubtargetImpl()->getInstrInfo();
+ unsigned Opc = STI.isThumb2() ? ARM::t2LDRpci : ARM::LDRcp;
+ const TargetInstrInfo &TII = *STI.getInstrInfo();
MachineInstrBuilder MIB = BuildMI(FirstMBB, MBBI, DL,
TII.get(Opc), TempReg)
.addConstantPoolIndex(Idx);
// Fix the GOT address by adding pc.
unsigned GlobalBaseReg = AFI->getGlobalBaseReg();
- Opc = TM->getSubtarget<ARMSubtarget>().isThumb2() ? ARM::tPICADD
- : ARM::PICADD;
+ Opc = STI.isThumb2() ? ARM::tPICADD : ARM::PICADD;
MIB = BuildMI(FirstMBB, MBBI, DL, TII.get(Opc), GlobalBaseReg)
.addReg(TempReg)
.addImm(ARMPCLabelIndex);
if (Opc == ARM::PICADD)
AddDefaultPred(MIB);
-
return true;
}
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