#include <MCRegisterInfo.h>
Classes | |
| class | DiffListIterator |
| struct | DwarfLLVMRegPair |
Public Types | |
| typedef const MCRegisterClass * | regclass_iterator |
Public Member Functions | |
| void | InitMCRegisterInfo (const MCRegisterDesc *D, unsigned NR, unsigned RA, unsigned PC, const MCRegisterClass *C, unsigned NC, const uint16_t(*RURoots)[2], unsigned NRU, const MCPhysReg *DL, const char *Strings, const uint16_t *SubIndices, unsigned NumIndices, const uint16_t *RET) |
| Initialize MCRegisterInfo, called by TableGen auto-generated routines. *DO NOT USE*. | |
| void | mapLLVMRegsToDwarfRegs (const DwarfLLVMRegPair *Map, unsigned Size, bool isEH) |
| Used to initialize LLVM register to Dwarf register number mapping. Called by TableGen auto-generated routines. DO NOT USE*. | |
| void | mapDwarfRegsToLLVMRegs (const DwarfLLVMRegPair *Map, unsigned Size, bool isEH) |
| Used to initialize Dwarf register to LLVM register number mapping. Called by TableGen auto-generated routines. DO NOT USE*. | |
| void | mapLLVMRegToSEHReg (unsigned LLVMReg, int SEHReg) |
| unsigned | getRARegister () const |
| This method should return the register where the return address can be found. | |
| unsigned | getProgramCounter () const |
| Return the register which is the program counter. | |
| const MCRegisterDesc & | operator[] (unsigned RegNo) const |
| const MCRegisterDesc & | get (unsigned RegNo) const |
| Provide a get method, equivalent to [], but more useful with a pointer to this object. | |
| unsigned | getSubReg (unsigned Reg, unsigned Idx) const |
| Returns the physical register number of sub-register "Index" for physical register RegNo. Return zero if the sub-register does not exist. | |
| unsigned | getMatchingSuperReg (unsigned Reg, unsigned SubIdx, const MCRegisterClass *RC) const |
| Return a super-register of the specified register Reg so its sub-register of index SubIdx is Reg. | |
| unsigned | getSubRegIndex (unsigned RegNo, unsigned SubRegNo) const |
| For a given register pair, return the sub-register index if the second register is a sub-register of the first. Return zero otherwise. | |
| const char * | getName (unsigned RegNo) const |
| Return the human-readable symbolic target-specific name for the specified physical register. | |
| unsigned | getNumRegs () const |
| Return the number of registers this target has (useful for sizing arrays holding per register information) | |
| unsigned | getNumSubRegIndices () const |
| Return the number of sub-register indices understood by the target. Index 0 is reserved for the no-op sub-register, while 1 to getNumSubRegIndices() - 1 represent real sub-registers. | |
| unsigned | getNumRegUnits () const |
| Return the number of (native) register units in the target. Register units are numbered from 0 to getNumRegUnits() - 1. They can be accessed through MCRegUnitIterator defined below. | |
| int | getDwarfRegNum (unsigned RegNum, bool isEH) const |
| Map a target register to an equivalent dwarf register number. Returns -1 if there is no equivalent value. The second parameter allows targets to use different numberings for EH info and debugging info. | |
| int | getLLVMRegNum (unsigned RegNum, bool isEH) const |
| Map a dwarf register back to a target register. | |
| int | getSEHRegNum (unsigned RegNum) const |
| Map a target register to an equivalent SEH register number. Returns LLVM register number if there is no equivalent value. | |
| regclass_iterator | regclass_begin () const |
| regclass_iterator | regclass_end () const |
| unsigned | getNumRegClasses () const |
| const MCRegisterClass & | getRegClass (unsigned i) const |
| Returns the register class associated with the enumeration value. See class MCOperandInfo. | |
| uint16_t | getEncodingValue (unsigned RegNo) const |
| Returns the encoding for RegNo. | |
| bool | isSubRegister (unsigned RegA, unsigned RegB) const |
| Returns true if RegB is a sub-register of RegA. | |
| bool | isSuperRegister (unsigned RegA, unsigned RegB) const |
| Returns true if RegB is a super-register of RegA. | |
| bool | isSubRegisterEq (unsigned RegA, unsigned RegB) const |
| Returns true if RegB is a sub-register of RegA or if RegB == RegA. | |
| bool | isSuperRegisterEq (unsigned RegA, unsigned RegB) const |
| Returns true if RegB is a super-register of RegA or if RegB == RegA. | |
Friends | |
| class | MCSubRegIterator |
| class | MCSuperRegIterator |
| class | MCRegAliasIterator |
| class | MCRegUnitIterator |
| class | MCRegUnitRootIterator |
Detailed Description
MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc objects that represent all of the machine registers that the target has. As such, we simply have to track a pointer to this array so that we can turn register number into a register descriptor.
Note this class is designed to be a base class of TargetRegisterInfo, which is the interface used by codegen. However, specific targets *should never* specialize this class. MCRegisterInfo should only contain getters to access TableGen generated physical register data. It must not be extended with virtual methods.
Definition at line 139 of file MCRegisterInfo.h.
Member Typedef Documentation
| typedef const MCRegisterClass* llvm::MCRegisterInfo::regclass_iterator |
Reimplemented in llvm::TargetRegisterInfo.
Definition at line 141 of file MCRegisterInfo.h.
Member Function Documentation
| const MCRegisterDesc& llvm::MCRegisterInfo::get | ( | unsigned | RegNo | ) | const [inline] |
Provide a get method, equivalent to [], but more useful with a pointer to this object.
Definition at line 316 of file MCRegisterInfo.h.
References operator[]().
Referenced by llvm::MCRegAliasIterator::MCRegAliasIterator(), llvm::MCRegUnitIterator::MCRegUnitIterator(), llvm::MCSubRegIterator::MCSubRegIterator(), and llvm::MCSuperRegIterator::MCSuperRegIterator().
Map a target register to an equivalent dwarf register number. Returns -1 if there is no equivalent value. The second parameter allows targets to use different numberings for EH info and debugging info.
Definition at line 49 of file MCRegisterInfo.cpp.
References llvm::MCRegisterInfo::DwarfLLVMRegPair::FromReg, I, and llvm::MCRegisterInfo::DwarfLLVMRegPair::ToReg.
Referenced by llvm::CompileUnit::addRegisterOffset(), llvm::CompileUnit::addRegisterOp(), createAArch64MCAsmInfo(), createMipsMCAsmInfo(), createPPCMCAsmInfo(), createSystemZMCAsmInfo(), createX86MCAsmInfo(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::ARMAsmPrinter::EmitDwarfRegOp(), llvm::AsmPrinter::EmitDwarfRegOp(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::SystemZFrameLowering::emitPrologue(), and llvm::AArch64FrameLowering::emitPrologue().
| uint16_t llvm::MCRegisterInfo::getEncodingValue | ( | unsigned | RegNo | ) | const [inline] |
Returns the encoding for RegNo.
Definition at line 389 of file MCRegisterInfo.h.
Referenced by HandleVRSaveUpdate(), llvm::X86_MC::InitLLVM2SEHRegisterMapping(), and llvm::MipsAsmPrinter::printSavedRegsBitmask().
Map a dwarf register back to a target register.
Definition at line 60 of file MCRegisterInfo.cpp.
References llvm::MCRegisterInfo::DwarfLLVMRegPair::FromReg, I, and llvm::MCRegisterInfo::DwarfLLVMRegPair::ToReg.
| unsigned MCRegisterInfo::getMatchingSuperReg | ( | unsigned | Reg, |
| unsigned | SubIdx, | ||
| const MCRegisterClass * | RC | ||
| ) | const |
Return a super-register of the specified register Reg so its sub-register of index SubIdx is Reg.
Definition at line 18 of file MCRegisterInfo.cpp.
References llvm::MCRegisterClass::contains(), getSubReg(), and llvm::MCRegisterInfo::DiffListIterator::isValid().
Referenced by llvm::ARMInstPrinter::printInst().
| const char* llvm::MCRegisterInfo::getName | ( | unsigned | RegNo | ) | const [inline] |
Return the human-readable symbolic target-specific name for the specified physical register.
Definition at line 337 of file MCRegisterInfo.h.
Referenced by llvm::AggressiveAntiDepBreaker::AggressiveAntiDepBreaker(), emitDebugValueComment(), emitImplicitDef(), emitKill(), llvm::RegScavenger::FindUnusedReg(), llvm::TargetLowering::getRegForInlineAsmConstraint(), llvm::AggressiveAntiDepBreaker::Observe(), llvm::PrintReg::print(), llvm::PrintRegUnit::print(), and llvm::RegScavenger::scavengeRegister().
| unsigned llvm::MCRegisterInfo::getNumRegClasses | ( | ) | const [inline] |
Reimplemented in llvm::TargetRegisterInfo.
Definition at line 377 of file MCRegisterInfo.h.
References regclass_begin(), and regclass_end().
Referenced by getRegClass().
| unsigned llvm::MCRegisterInfo::getNumRegs | ( | ) | const [inline] |
Return the number of registers this target has (useful for sizing arrays holding per register information)
Definition at line 343 of file MCRegisterInfo.h.
Referenced by llvm::PBQPBuilder::build(), llvm::ScheduleDAGInstrs::buildSchedGraph(), llvm::CCState::CCState(), llvm::LiveIntervals::checkRegMaskInterference(), llvm::RegScavenger::enterBasicBlock(), llvm::MachineRegisterInfo::freezeReservedRegs(), llvm::TargetRegisterInfo::getAllocatableSet(), llvm::MachineFrameInfo::getPristineRegs(), llvm::RegScavenger::getRegsAvailable(), getSubRegIndex(), llvm::Hexagon_CCState::Hexagon_CCState(), llvm::InterferenceCache::init(), llvm::RegPressureTracker::init(), llvm::MachineRegisterInfo::MachineRegisterInfo(), llvm::CriticalAntiDepBreaker::Observe(), llvm::AggressiveAntiDepBreaker::Observe(), llvm::RegisterClassInfo::runOnMachineFunction(), llvm::LiveVariables::runOnMachineFunction(), llvm::CriticalAntiDepBreaker::StartBlock(), llvm::AggressiveAntiDepBreaker::StartBlock(), and llvm::MachineRegisterInfo::verifyUseLists().
| unsigned llvm::MCRegisterInfo::getNumRegUnits | ( | ) | const [inline] |
Return the number of (native) register units in the target. Register units are numbered from 0 to getNumRegUnits() - 1. They can be accessed through MCRegUnitIterator defined below.
Definition at line 357 of file MCRegisterInfo.h.
Referenced by llvm::MachineRegisterInfo::MachineRegisterInfo(), and llvm::PrintRegUnit::print().
| unsigned llvm::MCRegisterInfo::getNumSubRegIndices | ( | ) | const [inline] |
Return the number of sub-register indices understood by the target. Index 0 is reserved for the no-op sub-register, while 1 to getNumSubRegIndices() - 1 represent real sub-registers.
Definition at line 350 of file MCRegisterInfo.h.
Referenced by getSubReg(), llvm::TargetRegisterInfo::getSubRegIndexLaneMask(), and llvm::TargetRegisterInfo::getSubRegIndexName().
| unsigned llvm::MCRegisterInfo::getProgramCounter | ( | ) | const [inline] |
Return the register which is the program counter.
Definition at line 304 of file MCRegisterInfo.h.
Referenced by llvm::MCInstrDesc::mayAffectControlFlow().
| unsigned llvm::MCRegisterInfo::getRARegister | ( | ) | const [inline] |
This method should return the register where the return address can be found.
Definition at line 299 of file MCRegisterInfo.h.
Referenced by llvm::MipsAsmPrinter::emitFrameDirective(), llvm::HexagonTargetLowering::LowerRETURNADDR(), and llvm::PPCFrameLowering::processFunctionBeforeCalleeSavedScan().
| const MCRegisterClass& llvm::MCRegisterInfo::getRegClass | ( | unsigned | i | ) | const [inline] |
Returns the register class associated with the enumeration value. See class MCOperandInfo.
Reimplemented in llvm::TargetRegisterInfo.
Definition at line 383 of file MCRegisterInfo.h.
References getNumRegClasses().
Referenced by llvm::ARMInstPrinter::printInst().
| int MCRegisterInfo::getSEHRegNum | ( | unsigned | RegNum | ) | const |
Map a target register to an equivalent SEH register number. Returns LLVM register number if there is no equivalent value.
Definition at line 70 of file MCRegisterInfo.cpp.
References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::find(), and I.
Returns the physical register number of sub-register "Index" for physical register RegNo. Return zero if the sub-register does not exist.
Definition at line 26 of file MCRegisterInfo.cpp.
References getNumSubRegIndices(), and llvm::MCRegisterInfo::DiffListIterator::isValid().
Referenced by llvm::ARMBaseInstrInfo::AddDReg(), llvm::X86InstrInfo::breakPartialRegDependency(), llvm::ARMBaseInstrInfo::copyPhysReg(), GetDSubRegs(), getImplicitSPRUseForDPRUse(), getMatchingSuperReg(), getPairedGPR(), llvm::CoalescerPair::isCoalescable(), llvm::ARMAsmPrinter::PrintAsmOperand(), llvm::ARMInstPrinter::printGPRPairOperand(), llvm::ARMAsmPrinter::printOperand(), llvm::ARMInstPrinter::printVectorListTwo(), llvm::ARMInstPrinter::printVectorListTwoAllLanes(), llvm::ARMInstPrinter::printVectorListTwoSpaced(), llvm::ARMInstPrinter::printVectorListTwoSpacedAllLanes(), llvm::CoalescerPair::setRegisters(), llvm::MachineInstr::substituteRegister(), and llvm::MachineOperand::substPhysReg().
For a given register pair, return the sub-register index if the second register is a sub-register of the first. Return zero otherwise.
Definition at line 38 of file MCRegisterInfo.cpp.
References getNumRegs(), and llvm::MCRegisterInfo::DiffListIterator::isValid().
Referenced by isNopCopy().
| void llvm::MCRegisterInfo::InitMCRegisterInfo | ( | const MCRegisterDesc * | D, |
| unsigned | NR, | ||
| unsigned | RA, | ||
| unsigned | PC, | ||
| const MCRegisterClass * | C, | ||
| unsigned | NC, | ||
| const uint16_t(*) | RURoots[2], | ||
| unsigned | NRU, | ||
| const MCPhysReg * | DL, | ||
| const char * | Strings, | ||
| const uint16_t * | SubIndices, | ||
| unsigned | NumIndices, | ||
| const uint16_t * | RET | ||
| ) | [inline] |
Initialize MCRegisterInfo, called by TableGen auto-generated routines. *DO NOT USE*.
Definition at line 235 of file MCRegisterInfo.h.
References llvm::CallingConv::C, and NC.
Returns true if RegB is a sub-register of RegA.
Definition at line 396 of file MCRegisterInfo.h.
References isSuperRegister().
Referenced by llvm::MachineInstr::addRegisterDead(), llvm::MachineInstr::addRegisterKilled(), llvm::MachineOperandIteratorBase::analyzePhysReg(), llvm::MachineInstr::findRegisterDefOperandIdx(), llvm::MachineInstr::findRegisterUseOperandIdx(), and isNopCopy().
Returns true if RegB is a sub-register of RegA or if RegB == RegA.
Definition at line 404 of file MCRegisterInfo.h.
References isSuperRegisterEq().
Referenced by llvm::MCInstrDesc::hasDefOfPhysReg().
Returns true if RegB is a super-register of RegA.
Definition at line 456 of file MCRegisterInfo.h.
References I.
Referenced by llvm::MachineInstr::addRegisterDead(), llvm::MachineInstr::addRegisterKilled(), llvm::ARMBaseInstrInfo::breakPartialRegDependency(), llvm::MachineInstr::clearRegisterKills(), isSubRegister(), and isSuperRegisterEq().
Returns true if RegB is a super-register of RegA or if RegB == RegA.
Definition at line 410 of file MCRegisterInfo.h.
References isSuperRegister().
Referenced by isSubRegisterEq().
| void llvm::MCRegisterInfo::mapDwarfRegsToLLVMRegs | ( | const DwarfLLVMRegPair * | Map, |
| unsigned | Size, | ||
| bool | isEH | ||
| ) | [inline] |
Used to initialize Dwarf register to LLVM register number mapping. Called by TableGen auto-generated routines. DO NOT USE*.
Definition at line 277 of file MCRegisterInfo.h.
| void llvm::MCRegisterInfo::mapLLVMRegsToDwarfRegs | ( | const DwarfLLVMRegPair * | Map, |
| unsigned | Size, | ||
| bool | isEH | ||
| ) | [inline] |
Used to initialize LLVM register to Dwarf register number mapping. Called by TableGen auto-generated routines. DO NOT USE*.
Definition at line 263 of file MCRegisterInfo.h.
| void llvm::MCRegisterInfo::mapLLVMRegToSEHReg | ( | unsigned | LLVMReg, |
| int | SEHReg | ||
| ) | [inline] |
mapLLVMRegToSEHReg - Used to initialize LLVM register to SEH register number mapping. By default the SEH register number is just the same as the LLVM register number. FIXME: TableGen these numbers. Currently this requires target specific initialization code.
Definition at line 293 of file MCRegisterInfo.h.
Referenced by llvm::X86_MC::InitLLVM2SEHRegisterMapping().
| const MCRegisterDesc& llvm::MCRegisterInfo::operator[] | ( | unsigned | RegNo | ) | const [inline] |
Definition at line 308 of file MCRegisterInfo.h.
Referenced by get().
| regclass_iterator llvm::MCRegisterInfo::regclass_begin | ( | ) | const [inline] |
Reimplemented in llvm::TargetRegisterInfo.
Definition at line 374 of file MCRegisterInfo.h.
Referenced by getNumRegClasses().
| regclass_iterator llvm::MCRegisterInfo::regclass_end | ( | ) | const [inline] |
Reimplemented in llvm::TargetRegisterInfo.
Definition at line 375 of file MCRegisterInfo.h.
Referenced by getNumRegClasses().
Friends And Related Function Documentation
friend class MCRegAliasIterator [friend] |
Definition at line 229 of file MCRegisterInfo.h.
friend class MCRegUnitIterator [friend] |
Definition at line 230 of file MCRegisterInfo.h.
friend class MCRegUnitRootIterator [friend] |
Definition at line 231 of file MCRegisterInfo.h.
friend class MCSubRegIterator [friend] |
Definition at line 227 of file MCRegisterInfo.h.
friend class MCSuperRegIterator [friend] |
Definition at line 228 of file MCRegisterInfo.h.
The documentation for this class was generated from the following files:
1.7.5.1