LLVM 18.0.0git
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#include "Target/X86/X86RegisterInfo.h"
Definition at line 24 of file X86RegisterInfo.h.
Definition at line 48 of file X86RegisterInfo.cpp.
References llvm::X86_MC::initLLVMToSEHAndCVRegMapping().
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Definition at line 725 of file X86RegisterInfo.cpp.
References assert().
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Definition at line 773 of file X86RegisterInfo.cpp.
References llvm::TargetRegisterInfo::canRealignStack(), CantUseSP(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getRegInfo(), and MRI.
Referenced by llvm::X86InstrInfo::loadRegFromStackSlot(), and llvm::X86InstrInfo::storeRegToStackSlot().
void X86RegisterInfo::eliminateFrameIndex | ( | MachineBasicBlock::iterator | II, |
unsigned | FIOperandNum, | ||
Register | BaseReg, | ||
int | FIOffset | ||
) | const |
Definition at line 839 of file X86RegisterInfo.cpp.
References assert(), llvm::MachineOperand::ChangeToImmediate(), MI, and llvm::Offset.
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Definition at line 879 of file X86RegisterInfo.cpp.
References assert(), llvm::MachineOperand::ChangeToImmediate(), contains(), llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::getFirstTerminator(), llvm::StackOffset::getFixed(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReferenceSP(), llvm::MachineFunction::getFrameInfo(), llvm::MachineBasicBlock::getParent(), llvm::X86FrameLowering::getWin64EHFrameIndexRef(), llvm::getX86SubSuperRegister(), llvm::X86FrameLowering::Is64Bit, llvm::MachineBasicBlock::isEHFuncletEntry(), llvm::MachineFrameInfo::isFixedObjectIndex(), isFuncletReturnInstr(), MBB, MBBI, MI, llvm::Offset, and tryOptimizeLEAtoMOV().
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Process frame indices in forwards block order because X86InstrInfo::getSPAdjust relies on it when searching for the ADJCALLSTACKUP pseudo following a call.
TODO: Fix this and return true like all other targets.
Definition at line 153 of file X86RegisterInfo.h.
unsigned X86RegisterInfo::findDeadCallerSavedReg | ( | MachineBasicBlock & | MBB, |
MachineBasicBlock::iterator & | MBBI | ||
) | const |
findDeadCallerSavedReg - Return a caller-saved register that isn't live when it reaches the "return" instruction.
We can then pop a stack object to this register without worry about clobbering it.
Definition at line 959 of file X86RegisterInfo.cpp.
References llvm::MachineFunction::callsEHReturn(), llvm::MachineBasicBlock::end(), getGPRsForTailCall(), llvm::MachineBasicBlock::getParent(), llvm::MCRegAliasIterator::isValid(), MBB, MBBI, and Uses.
Referenced by llvm::X86FrameLowering::emitSPUpdate().
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Definition at line 166 of file X86RegisterInfo.h.
Referenced by llvm::X86FrameLowering::determineCalleeSaves(), llvm::X86FrameLowering::emitPrologue(), llvm::X86FrameLowering::getFrameIndexReference(), getReservedRegs(), and llvm::X86FrameLowering::restoreWin32EHStackPointers().
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getCalleeSavedRegs - Return a null-terminated list of all of the callee-save registers on this target.
Definition at line 282 of file X86RegisterInfo.cpp.
References llvm::CallingConv::AnyReg, assert(), llvm::MachineFunction::callsEHReturn(), CC, llvm::CallingConv::CFGuard_Check, llvm::CallingConv::Cold, llvm::CallingConv::CXX_FAST_TLS, F, llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getSubtarget(), llvm::X86Subtarget::getTargetLowering(), llvm::CallingConv::GHC, llvm::X86Subtarget::hasAVX(), llvm::X86Subtarget::hasAVX512(), llvm::Function::hasFnAttribute(), llvm::X86Subtarget::hasSSE1(), llvm::CallingConv::HiPE, llvm::CallingConv::Intel_OCL_BI, llvm::CallingConv::PreserveAll, llvm::CallingConv::PreserveMost, llvm::X86TargetLowering::supportSwiftError(), llvm::CallingConv::SwiftTail, llvm::CallingConv::Win64, llvm::CallingConv::X86_64_SysV, llvm::CallingConv::X86_INTR, and llvm::CallingConv::X86_RegCall.
const MCPhysReg * X86RegisterInfo::getCalleeSavedRegsViaCopy | ( | const MachineFunction * | MF | ) | const |
Definition at line 409 of file X86RegisterInfo.cpp.
References assert(), llvm::CallingConv::CXX_FAST_TLS, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), and llvm::X86MachineFunctionInfo::isSplitCSR().
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Definition at line 419 of file X86RegisterInfo.cpp.
References llvm::CallingConv::AnyReg, assert(), CC, llvm::CallingConv::CFGuard_Check, llvm::CallingConv::Cold, llvm::CallingConv::CXX_FAST_TLS, F, llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), llvm::X86Subtarget::getTargetLowering(), llvm::CallingConv::GHC, llvm::X86Subtarget::hasAVX(), llvm::X86Subtarget::hasAVX512(), llvm::X86Subtarget::hasSSE1(), llvm::CallingConv::HiPE, llvm::CallingConv::Intel_OCL_BI, llvm::CallingConv::PreserveAll, llvm::CallingConv::PreserveMost, llvm::X86TargetLowering::supportSwiftError(), llvm::CallingConv::SwiftTail, llvm::CallingConv::Win64, llvm::CallingConv::X86_64_SysV, llvm::CallingConv::X86_INTR, and llvm::CallingConv::X86_RegCall.
Referenced by getReservedRegs().
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getCrossCopyRegClass - Returns a legal register class to copy a register in the specified class to or from.
Returns NULL if it is possible to copy between a two registers of the specified class.
Definition at line 251 of file X86RegisterInfo.cpp.
Definition at line 528 of file X86RegisterInfo.cpp.
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Returns physical register used as frame pointer.
This will always returns the frame pointer register, contrary to getFrameRegister() which returns the "base pointer" in situations involving a stack, frame and base pointer.
Definition at line 171 of file X86RegisterInfo.h.
Referenced by llvm::X86FrameLowering::getFrameIndexReference().
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Definition at line 1007 of file X86RegisterInfo.cpp.
References llvm::X86FrameLowering::hasFP().
Referenced by llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMovesFullCFA(), llvm::X86FrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitPrologue(), llvm::X86FrameLowering::getFrameIndexReference(), getPtrSizedFrameRegister(), and llvm::X86FrameLowering::restoreWin32EHStackPointers().
const TargetRegisterClass * X86RegisterInfo::getGPRsForTailCall | ( | const MachineFunction & | MF | ) | const |
getGPRsForTailCall - Returns a register class with registers that can be used in forming tail calls.
Definition at line 237 of file X86RegisterInfo.cpp.
References F, llvm::MachineFunction::getFunction(), llvm::CallingConv::HiPE, and llvm::CallingConv::Win64.
Referenced by findDeadCallerSavedReg(), and getPointerRegClass().
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Definition at line 110 of file X86RegisterInfo.cpp.
References llvm::MachineFunction::getSubtarget(), llvm::TargetRegisterClass::getSuperClasses(), llvm::X86Subtarget::hasAVX512(), and I.
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getMatchingSuperRegClass - Return a subclass of the specified register class A so that each register in it has a sub-register of the specified sub-register index which is in the specified register class B.
Definition at line 97 of file X86RegisterInfo.cpp.
Definition at line 524 of file X86RegisterInfo.cpp.
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Return the number of registers for the function.
Definition at line 636 of file X86RegisterInfo.cpp.
References assert(), and llvm::MachineFunction::getSubtarget().
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getPointerRegClass - Returns a TargetRegisterClass used for pointer values.
Definition at line 181 of file X86RegisterInfo.cpp.
References getGPRsForTailCall(), llvm::MachineFunction::getSubtarget(), llvm::X86FrameLowering::hasFP(), llvm::X86Subtarget::isTarget64BitLP64(), llvm_unreachable, and llvm::X86FrameLowering::Uses64BitFramePtr.
unsigned X86RegisterInfo::getPtrSizedFrameRegister | ( | const MachineFunction & | MF | ) | const |
Definition at line 1013 of file X86RegisterInfo.cpp.
References getFrameRegister(), llvm::MachineFunction::getSubtarget(), llvm::getX86SubSuperRegister(), and llvm::X86Subtarget::isTarget64BitILP32().
Referenced by llvm::X86TargetLowering::getRegisterByName().
unsigned X86RegisterInfo::getPtrSizedStackRegister | ( | const MachineFunction & | MF | ) | const |
Definition at line 1022 of file X86RegisterInfo.cpp.
References getStackRegister(), llvm::MachineFunction::getSubtarget(), llvm::getX86SubSuperRegister(), and llvm::X86Subtarget::isTarget64BitILP32().
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Definition at line 1068 of file X86RegisterInfo.cpp.
References llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorImpl< T >::clear(), llvm::TargetRegisterClass::contains(), llvm::SmallSet< T, N, C >::count(), llvm::dbgs(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::format_hex(), llvm::TargetRegisterClass::getID(), llvm::TargetRegisterInfo::getRegAllocationHints(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), getTileShape(), llvm::X86Subtarget::hasAVX512(), llvm::SmallSet< T, N, C >::insert(), LLVM_DEBUG, Matrix, MRI, llvm::MCRegister::NoRegister, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::report_fatal_error().
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Definition at line 262 of file X86RegisterInfo.cpp.
References llvm::TargetRegisterClass::getID(), and llvm::X86FrameLowering::hasFP().
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getReservedRegs - Returns a bitset indexed by physical register number indicating if a register is a special register that has particular uses and should be considered unavailable at all times, e.g.
SP, RA. This is used by register scavenger to determine what registers are free.
Definition at line 532 of file X86RegisterInfo.cpp.
References assert(), CC, llvm::MachineOperand::clobbersPhysReg(), getBaseRegister(), llvm::Function::getCallingConv(), getCallPreservedMask(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), llvm::getX86SubSuperRegister(), llvm::CallingConv::GRAAL, llvm::X86Subtarget::hasAVX512(), hasBasePointer(), llvm::X86FrameLowering::hasFP(), llvm::MCRegAliasIterator::isValid(), RegMask, llvm::report_fatal_error(), llvm::Reserved, and SubReg.
int X86RegisterInfo::getSEHRegNum | ( | unsigned | i | ) | const |
Definition at line 80 of file X86RegisterInfo.cpp.
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Definition at line 173 of file X86RegisterInfo.h.
Referenced by llvm::X86AsmPrinter::emitInstruction(), llvm::X86FrameLowering::getInitialCFAOffset(), llvm::X86TargetLowering::getReturnAddressFrameIndex(), llvm::X86MachineFunctionInfo::setRestoreBasePointer(), and llvm::X86FrameLowering::X86FrameLowering().
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Definition at line 165 of file X86RegisterInfo.h.
Referenced by llvm::X86FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReferenceSP(), getPtrSizedStackRegister(), llvm::X86FrameLowering::getWin64EHFrameIndexRef(), llvm::X86FrameLowering::X86FrameLowering(), and llvm::X86TargetLowering::X86TargetLowering().
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Definition at line 85 of file X86RegisterInfo.cpp.
References Idx.
bool X86RegisterInfo::hasBasePointer | ( | const MachineFunction & | MF | ) | const |
Definition at line 749 of file X86RegisterInfo.cpp.
References CantUseSP(), EnableBasePointer, llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::X86MachineFunctionInfo::getStackPtrSaveMI(), and llvm::X86MachineFunctionInfo::hasPreallocatedCall().
Referenced by llvm::X86FrameLowering::canSimplifyCallFramePseudos(), llvm::X86FrameLowering::determineCalleeSaves(), llvm::X86FrameLowering::emitPrologue(), llvm::X86FrameLowering::getFrameIndexReference(), and getReservedRegs().
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isArgumentReg - Returns true if Reg can be used as an argument to a function.
Definition at line 665 of file X86RegisterInfo.cpp.
References llvm::any_of(), CC, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), TRI, llvm::CallingConv::Win64, and llvm::CallingConv::X86_64_SysV.
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Returns true if PhysReg is a fixed register.
Definition at line 704 of file X86RegisterInfo.cpp.
References llvm::MachineFunction::getSubtarget(), llvm::X86FrameLowering::hasFP(), and TRI.
bool X86RegisterInfo::isTileRegisterClass | ( | const TargetRegisterClass * | RC | ) | const |
Return true if it is tile register class.
Definition at line 721 of file X86RegisterInfo.cpp.
References llvm::TargetRegisterClass::getID().
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Definition at line 792 of file X86RegisterInfo.cpp.
References llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::TargetRegisterInfo::shouldRealignStack(), and llvm::CallingConv::X86_INTR.
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Definition at line 221 of file X86RegisterInfo.cpp.
References llvm::TargetRegisterClass::hasSuperClassEq(), and llvm::TargetRegisterInfo::shouldRewriteCopySrc().