LLVM: llvm::MachineFrameInfo Class Reference (original) (raw)

The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted. More...

#include "[llvm/CodeGen/MachineFrameInfo.h](MachineFrameInfo%5F8h%5Fsource.html)"

The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted.

This class is key to allowing stack frame representation optimizations, such as frame pointer elimination. It also allows more mundane (but still important) optimizations, such as reordering of abstract objects on the stack frame.

To support this, the class assigns unique integer identifiers to stack objects requested clients. These identifiers are negative integers for fixed stack objects (such as arguments passed on the stack) or nonnegative for objects that may be reordered. Instructions which refer to stack objects use a special MO_FrameIndex operand to represent these frame indexes.

Because this class keeps track of all references to the stack frame, it knows when a variable sized object is allocated on the stack. This is the sole condition which prevents frame pointer elimination, which is an important optimization on register-poor architectures. Because original variable sized alloca's in the source program are the only source of variable sized stack objects, it is safe to decide whether there will be any variable sized objects before all stack objects are known (for example, register allocator spill code never needs variable sized objects).

When prolog/epilog code emission is performed, the final stack frame is built and the machine instructions are modified to refer to the actual stack offsets of the object, eliminating all MO_FrameIndex operands from the program.

Abstract Stack Frame Information

Definition at line 111 of file MachineFrameInfo.h.

◆ SSPLayoutKind

Stack Smashing Protection (SSP) rules require that vulnerable stack allocations are located close the stack protector.

Definition at line 115 of file MachineFrameInfo.h.

◆ MachineFrameInfo() [2/2]

◆ adjustsStack()

Return true if this function adjusts the stack – e.g., when calling another function.

This is only valid during and after prolog/epilog code insertion.

Definition at line 637 of file MachineFrameInfo.h.

Referenced by llvm::AArch64RegisterInfo::cannotEliminateFrame(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), convertMFI(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), estimateStackSize(), llvm::VEInstrInfo::expandGetStackTopPseudo(), and isXPLeafCandidate().

◆ clearObjectAllocation()

Remove the underlying Alloca of the specified stack object if it exists.

This generally should not be used and is for reduction tooling.

Definition at line 540 of file MachineFrameInfo.h.

References assert().

◆ clearRestorePoints()

◆ clearSavePoints()

◆ computeMaxCallFrameSize()

Computes the maximum size of a callframe.

This only works for targets defining TargetInstrInfo::getCallFrameSetupOpcode(), getCallFrameDestroyOpcode(), and getFrameSize(). This is usually computed by the prologue epilogue inserter but some targets may call this to compute it earlier. If FrameSDOps is passed, the frame instructions in the MF will be inserted into it.

Definition at line 187 of file MachineFrameInfo.cpp.

References assert(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFunction::getSubtarget(), MBB, MI, Size, and TII.

Referenced by llvm::ARMTargetLowering::finalizeLowering(), and llvm::AArch64Subtarget::mirFileLoaded().

◆ contributesToMaxAlignment()

◆ CreateFixedObject()

Create a new object at a fixed location on the stack.

All fixed objects should be created before other objects are created for efficiency. By default, fixed objects are not pointed to by LLVM IR values. This returns an index with a negative value.

Definition at line 83 of file MachineFrameInfo.cpp.

References assert(), clampStackAlignment(), llvm::commonAlignment(), and Size.

Referenced by llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), CalculateTailCallArgDest(), llvm::XCoreFunctionInfo::createLRSpillSlot(), llvm::LanaiFrameLowering::determineCalleeSaves(), llvm::M68kFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::determineCalleeSaves(), EmitTailCallStoreFPAndRetAddr(), EmitTailCallStoreRetAddr(), getOrCreateFixedStackObject(), llvm::SystemZELFFrameLowering::getOrCreateFramePointerSaveIndex(), llvm::SystemZXPLINKFrameLowering::getOrCreateFramePointerSaveIndex(), llvm::MSP430TargetLowering::getReturnAddressFrameIndex(), llvm::X86TargetLowering::getReturnAddressFrameIndex(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::SITargetLowering::LowerCall(), llvm::HexagonTargetLowering::LowerFormalArguments(), llvm::LoongArchTargetLowering::LowerFormalArguments(), llvm::RISCVTargetLowering::LowerFormalArguments(), llvm::SystemZTargetLowering::LowerFormalArguments(), llvm::VETargetLowering::LowerFormalArguments(), llvm::XtensaTargetLowering::LowerFormalArguments(), llvm::AArch64CallLowering::lowerFormalArguments(), llvm::MipsCallLowering::lowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_32(), llvm::SparcTargetLowering::LowerFormalArguments_64(), llvm::AArch64FrameLowering::processFunctionBeforeFrameFinalized(), llvm::MSP430FrameLowering::processFunctionBeforeFrameFinalized(), unpack64(), unpackF64OnLA32DSoftABI(), unpackF64OnRV32DSoftABI(), unpackFromMemLoc(), unpackFromMemLoc(), and unpackFromMemLoc().

◆ CreateFixedSpillStackObject()

◆ CreateSpillStackObject()

Create a new statically sized stack object that represents a spill slot, returning a nonnegative identifier to represent it.

Definition at line 66 of file MachineFrameInfo.cpp.

References clampStackAlignment(), CreateStackObject(), ensureMaxAlignment(), and Size.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::SIMachineFunctionInfo::allocateWWMSpill(), llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::CSKYFrameLowering::determineCalleeSaves(), llvm::HexagonFrameLowering::determineCalleeSaves(), llvm::MipsSEFrameLowering::determineCalleeSaves(), getZT0FrameIndex(), llvm::ARCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::XCoreFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::XtensaFrameLowering::processFunctionBeforeFrameFinalized().

◆ CreateStackObject()

Create a new statically sized stack object, returning a nonnegative identifier to represent it.

Definition at line 51 of file MachineFrameInfo.cpp.

References assert(), clampStackAlignment(), contributesToMaxAlignment(), ensureMaxAlignment(), and Size.

Referenced by assignCalleeSavedSpillSlots(), llvm::AArch64FrameLowering::assignCalleeSavedSpillSlots(), llvm::SystemZXPLINKFrameLowering::assignCalleeSavedSpillSlots(), llvm::X86TargetLowering::BuildFILD(), llvm::MipsFunctionInfo::createEhDataRegsFI(), llvm::XCoreFunctionInfo::createEHSpillSlot(), llvm::XCoreFunctionInfo::createFPSpillSlot(), llvm::MipsFunctionInfo::createISRRegFI(), llvm::XCoreFunctionInfo::createLRSpillSlot(), createSiFivePreemptibleInterruptFrameEntries(), CreateSpillStackObject(), llvm::SelectionDAG::CreateStackTemporary(), llvm::LegalizerHelper::createStackTemporary(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::X86TargetLowering::EmitInstrWithCustomInserter(), getAddressForMemoryInput(), llvm::RISCVMachineFunctionInfo::getMoveF64FrameIndex(), llvm::MipsFunctionInfo::getMoveF64ViaSpillFI(), llvm::SIMachineFunctionInfo::getScavengeFI(), llvm::CallLowering::handleAssignments(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::CallLowering::insertSRetOutgoingArgument(), llvm::LoongArchTargetLowering::LowerCall(), llvm::RISCVTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), llvm::TargetLowering::LowerCallTo(), llvm::SparcTargetLowering::LowerF128_LibCallArg(), llvm::SparcTargetLowering::LowerF128Op(), llvm::InlineAsmLowering::lowerInlineAsm(), LowerINTRINSIC_W_CHAIN(), and llvm::X86FrameLowering::processFunctionBeforeFrameFinalized().

◆ CreateVariableSizedObject()

◆ dump()

◆ ensureMaxAlignment()

◆ estimateStackSize()

Estimate and return the size of the stack frame.

Definition at line 137 of file MachineFrameInfo.cpp.

References adjustsStack(), llvm::alignTo(), llvm::TargetStackID::Default, llvm::TargetSubtargetInfo::getFrameLowering(), getMaxAlign(), getMaxCallFrameSize(), getObjectAlign(), getObjectIndexBegin(), getObjectIndexEnd(), getObjectOffset(), getObjectSize(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlign(), getStackID(), llvm::MachineFunction::getSubtarget(), llvm::TargetFrameLowering::getTransientStackAlign(), llvm::TargetFrameLowering::hasReservedCallFrame(), hasVarSizedObjects(), isDeadObjectIndex(), and llvm::Offset.

Referenced by llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::CSKYFrameLowering::determineCalleeSaves(), llvm::XCoreFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::MipsFrameLowering::estimateStackSize(), llvm::XCoreFunctionInfo::isLargeFrame(), isXPLeafCandidate(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::X86FrameLowering::processFunctionBeforeFrameFinalized(), and llvm::XtensaFrameLowering::processFunctionBeforeFrameFinalized().

◆ getCalleeSavedInfo() [1/2]

◆ getCalleeSavedInfo() [2/2]

Returns a reference to call saved info vector for the current function.

Definition at line 841 of file MachineFrameInfo.h.

Referenced by addCalleeSavedRegs(), llvm::LivePhysRegs::addLiveOutsNoPristines(), convertStackObjects(), llvm::XtensaRegisterInfo::eliminateFrameIndex(), llvm::MSP430FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::ARCFrameLowering::emitEpilogue(), llvm::LoongArchFrameLowering::emitEpilogue(), llvm::MipsSEFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::RISCVFrameLowering::emitEpilogue(), llvm::Thumb1FrameLowering::emitEpilogue(), llvm::XtensaFrameLowering::emitEpilogue(), llvm::SystemZAsmPrinter::emitFunctionEntryLabel(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::HexagonFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), emitSCSEpilogue(), emitSCSPrologue(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), llvm::TargetFrameLowering::getCalleeSaves(), llvm::LoongArchFrameLowering::getFirstSPAdjustAmount(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), getPristineRegs(), getSVECalleeSaveSlotRange(), llvm::Mips16InstrInfo::makeFrame(), llvm::MipsAsmPrinter::printSavedRegsBitmask(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::recomputeLivenessFlags(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), llvm::AArch64FrameLowering::resetCFIToInitialState(), llvm::Mips16InstrInfo::restoreFrame(), updateLiveness(), and llvm::ARMFrameLowering::updateLRRestored().

◆ getCVBytesOfCalleeSavedRegisters()

◆ getFunctionContextIndex()

◆ getLocalFrameMaxAlign()

◆ getLocalFrameObjectCount()

◆ getLocalFrameObjectMap()

◆ getLocalFrameSize()

◆ getMaxAlign()

Return the alignment in bytes that this function must be aligned to, which is greater than the default stack alignment provided by the target.

Definition at line 623 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), convertMFI(), llvm::PPCFrameLowering::determineFrameLayout(), emitAlignedDPRCS2Spills(), llvm::SIFrameLowering::emitEntryFunctionPrologue(), llvm::SIFrameLowering::emitEpilogue(), llvm::HexagonDAGToDAGISel::emitFunctionEntryCode(), llvm::ARMFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SIFrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::VEFrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), estimateStackSize(), llvm::PPCFrameLowering::inlineStackProbe(), llvm::PPCRegisterInfo::lowerDynamicAlloc(), llvm::PPCRegisterInfo::prepareDynamicAlloca(), llvm::HexagonFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::HexagonDAGToDAGISel::SelectFrameIndex().

◆ getMaxCallFrameSize()

Return the maximum size of a call frame that must be allocated for an outgoing function call.

This is only available if CallFrameSetup/Destroy pseudo instructions are used by the target, and then only during or after prolog/epilog code insertion.

Definition at line 686 of file MachineFrameInfo.h.

References isMaxCallFrameSizeComputed().

Referenced by convertMFI(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::SparcFrameLowering::emitPrologue(), estimateStackSize(), llvm::VEInstrInfo::expandGetStackTopPseudo(), llvm::X86FrameLowering::getWin64EHFrameIndexRef(), llvm::AArch64FrameLowering::getWinEHFuncletFrameSize(), llvm::RISCVFrameLowering::hasBP(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::ARMFrameLowering::hasReservedCallFrame(), llvm::Mips16FrameLowering::hasReservedCallFrame(), llvm::MipsSEFrameLowering::hasReservedCallFrame(), llvm::Thumb1FrameLowering::hasReservedCallFrame(), llvm::PPCRegisterInfo::lowerDynamicAlloc(), llvm::PPCRegisterInfo::lowerDynamicAreaOffset(), and llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized().

◆ getNumFixedObjects()

◆ getNumObjects()

◆ getObjectAlign()

Return the alignment of the specified stack object.

Definition at line 495 of file MachineFrameInfo.h.

References assert().

Referenced by addFrameReference(), llvm::addFrameReference(), llvm::addFrameReference(), llvm::M68k::addFrameReference(), llvm::M68k::addMemOperand(), AdjustStackOffset(), AdjustStackOffset(), buildEpilogRestore(), buildPrologSpill(), llvm::SIRegisterInfo::buildSpillLoadStore(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), computeCalleeSaveRegisterPairs(), llvm::TargetLowering::computeKnownBitsForFrameIndex(), convertStackObjects(), determineSVEStackSizes(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::TargetLoweringBase::emitPatchPoint(), estimateStackSize(), fixupFuncForFI(), foldInlineAsmMemOperand(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::X86InstrInfo::foldMemoryOperandImpl(), getFrameIndexMMO(), llvm::M68kFrameLowering::getFrameIndexReference(), llvm::R600FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), llvm::MipsInstrInfo::GetMemOperand(), getMemsetStores(), llvm::inferAlignFromPtrInfo(), llvm::SelectionDAG::InferPtrAlign(), llvm::SelectionDAGISel::isOrEquivalentToAdd(), llvm::AArch64InstrInfo::loadRegFromStackSlot(), llvm::ARCInstrInfo::loadRegFromStackSlot(), llvm::ARMBaseInstrInfo::loadRegFromStackSlot(), llvm::AVRInstrInfo::loadRegFromStackSlot(), llvm::HexagonInstrInfo::loadRegFromStackSlot(), llvm::LoongArchInstrInfo::loadRegFromStackSlot(), llvm::MSP430InstrInfo::loadRegFromStackSlot(), llvm::RISCVInstrInfo::loadRegFromStackSlot(), llvm::SparcInstrInfo::loadRegFromStackSlot(), llvm::Thumb1InstrInfo::loadRegFromStackSlot(), llvm::Thumb2InstrInfo::loadRegFromStackSlot(), llvm::VEInstrInfo::loadRegFromStackSlot(), llvm::XCoreInstrInfo::loadRegFromStackSlot(), llvm::PPCInstrInfo::loadRegFromStackSlotNoUpd(), llvm::TargetLowering::LowerCallTo(), llvm::HexagonFrameLowering::orderFrameObjects(), llvm::X86FrameLowering::orderFrameObjects(), llvm::AArch64FrameLowering::processFunctionBeforeFrameFinalized(), scavengeStackSlot(), setAlignFlagsForFI(), llvm::SIFrameLowering::spillCalleeSavedRegisters(), spillIncomingStatepointValue(), llvm::AArch64InstrInfo::storeRegToStackSlot(), llvm::ARCInstrInfo::storeRegToStackSlot(), llvm::ARMBaseInstrInfo::storeRegToStackSlot(), llvm::AVRInstrInfo::storeRegToStackSlot(), llvm::HexagonInstrInfo::storeRegToStackSlot(), llvm::LoongArchInstrInfo::storeRegToStackSlot(), llvm::MSP430InstrInfo::storeRegToStackSlot(), llvm::RISCVInstrInfo::storeRegToStackSlot(), llvm::SparcInstrInfo::storeRegToStackSlot(), llvm::Thumb1InstrInfo::storeRegToStackSlot(), llvm::Thumb2InstrInfo::storeRegToStackSlot(), llvm::VEInstrInfo::storeRegToStackSlot(), llvm::XCoreInstrInfo::storeRegToStackSlot(), llvm::PPCInstrInfo::storeRegToStackSlotNoUpd(), and tryToElideArgumentCopy().

◆ getObjectAllocation()

◆ getObjectIndexBegin()

Return the minimum frame object index.

Definition at line 418 of file MachineFrameInfo.h.

Referenced by allSGPRSpillsAreDead(), allStackObjectsAreDead(), computeFreeStackSlots(), convertStackObjects(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), determineSVEStackSizes(), llvm::XtensaFrameLowering::emitPrologue(), estimateStackSize(), llvm::MipsFrameLowering::estimateStackSize(), llvm::yaml::FrameIndex::FrameIndex(), llvm::yaml::FrameIndex::getFI(), llvm::R600FrameLowering::getFrameIndexReference(), getMMOFrameID(), getOrCreateFixedStackObject(), isLikelyToHaveSVEStack(), printFrameIndex(), llvm::MSP430FrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::SIMachineFunctionInfo::removeDeadFrameIndices().

◆ getObjectIndexEnd()

Return one past the maximum frame object index.

Definition at line 421 of file MachineFrameInfo.h.

Referenced by allSGPRSpillsAreDead(), allStackObjectsAreDead(), computeFreeStackSlots(), convertStackObjects(), llvm::SSPLayoutInfo::copyToMachineFrameInfo(), determineSVEStackSizes(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), estimateStackSize(), getMMOFrameID(), INITIALIZE_PASS(), INITIALIZE_PASS(), isLikelyToHaveSVEStack(), llvm::AArch64FrameLowering::orderFrameObjects(), llvm::HexagonFrameLowering::orderFrameObjects(), llvm::SystemZELFFrameLowering::orderFrameObjects(), llvm::X86FrameLowering::orderFrameObjects(), llvm::SIFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIMachineFunctionInfo::removeDeadFrameIndices(), and llvm::AVRFrameAnalyzer::runOnMachineFunction().

◆ getObjectOffset()

Return the assigned stack offset of the specified object from the incoming stack pointer.

Definition at line 548 of file MachineFrameInfo.h.

References assert(), and isDeadObjectIndex().

Referenced by llvm::AMDGPUTargetLowering::addTokenForArgument(), llvm::HexagonFrameLowering::assignCalleeSavedSpillSlots(), llvm::SIRegisterInfo::buildSpillLoadStore(), computeFreeStackSlots(), convertStackObjects(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::AVRRegisterInfo::eliminateFrameIndex(), llvm::BPFRegisterInfo::eliminateFrameIndex(), llvm::LanaiRegisterInfo::eliminateFrameIndex(), llvm::M68kRegisterInfo::eliminateFrameIndex(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::MSP430RegisterInfo::eliminateFrameIndex(), llvm::NVPTXRegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::WebAssemblyRegisterInfo::eliminateFrameIndex(), llvm::XCoreRegisterInfo::eliminateFrameIndex(), llvm::XtensaRegisterInfo::eliminateFrameIndex(), llvm::MSP430FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::PPCFrameLowering::emitEpilogue(), llvm::XCoreFrameLowering::emitEpilogue(), llvm::TargetLoweringBase::emitPatchPoint(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), llvm::BaseIndexOffset::equalBaseIndex(), estimateStackSize(), llvm::MipsFrameLowering::estimateStackSize(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), GetEHSpillList(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::M68kFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), llvm::NVPTXFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::SIFrameLowering::getFrameIndexReference(), llvm::SparcFrameLowering::getFrameIndexReference(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::VEFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::AArch64FrameLowering::getFrameIndexReferenceFromSP(), llvm::TargetFrameLowering::getFrameIndexReferenceFromSP(), llvm::AArch64FrameLowering::getFrameIndexReferencePreferSP(), llvm::X86FrameLowering::getFrameIndexReferenceSP(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), getOrCreateFixedStackObject(), llvm::AArch64FrameLowering::getSEHFrameIndexOffset(), GetSpillList(), isConsecutiveLSLoc(), MatchingStackOffset(), MatchingStackOffset(), llvm::AArch64FrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), shouldClusterFI(), and shouldLowerTailCallStackArg().

◆ getObjectSize()

Return the size of the specified object.

Definition at line 481 of file MachineFrameInfo.h.

References assert().

Referenced by addFrameReference(), llvm::addFrameReference(), llvm::addFrameReference(), llvm::M68k::addFrameReference(), llvm::M68k::addMemOperand(), llvm::AMDGPUTargetLowering::addTokenForArgument(), AdjustStackOffset(), AdjustStackOffset(), llvm::StatepointLoweringState::allocateStackSlot(), llvm::SIMachineFunctionInfo::allocateVGPRSpillToAGPR(), buildEpilogRestore(), buildPrologSpill(), computeFreeStackSlots(), convertStackObjects(), determineSVEStackSizes(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::WebAssemblyRegisterInfo::eliminateFrameIndex(), llvm::ARCFrameLowering::emitEpilogue(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::TargetLoweringBase::emitPatchPoint(), llvm::ARCFrameLowering::emitPrologue(), estimateStackSize(), llvm::MipsFrameLowering::estimateStackSize(), foldInlineAsmMemOperand(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::SystemZInstrInfo::foldMemoryOperandImpl(), llvm::X86InstrInfo::foldMemoryOperandImpl(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), getFrameIndexMMO(), llvm::R600FrameLowering::getFrameIndexReference(), llvm::MipsInstrInfo::GetMemOperand(), getOrCreateFixedStackObject(), isConsecutiveLSLoc(), llvm::SystemZInstrInfo::isStackSlotCopy(), llvm::AArch64InstrInfo::loadRegFromStackSlot(), llvm::ARCInstrInfo::loadRegFromStackSlot(), llvm::ARMBaseInstrInfo::loadRegFromStackSlot(), llvm::AVRInstrInfo::loadRegFromStackSlot(), llvm::HexagonInstrInfo::loadRegFromStackSlot(), llvm::LoongArchInstrInfo::loadRegFromStackSlot(), llvm::M68kInstrInfo::loadRegFromStackSlot(), llvm::MSP430InstrInfo::loadRegFromStackSlot(), llvm::RISCVInstrInfo::loadRegFromStackSlot(), llvm::SparcInstrInfo::loadRegFromStackSlot(), llvm::Thumb1InstrInfo::loadRegFromStackSlot(), llvm::Thumb2InstrInfo::loadRegFromStackSlot(), llvm::VEInstrInfo::loadRegFromStackSlot(), llvm::X86InstrInfo::loadRegFromStackSlot(), llvm::XCoreInstrInfo::loadRegFromStackSlot(), llvm::PPCInstrInfo::loadRegFromStackSlotNoUpd(), MatchingStackOffset(), MatchingStackOffset(), llvm::HexagonFrameLowering::orderFrameObjects(), llvm::SystemZELFFrameLowering::orderFrameObjects(), llvm::X86FrameLowering::orderFrameObjects(), llvm::AArch64FrameLowering::processFunctionBeforeFrameFinalized(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::AVRFrameAnalyzer::runOnMachineFunction(), scavengeStackSlot(), shouldLowerTailCallStackArg(), llvm::SIFrameLowering::spillCalleeSavedRegisters(), spillIncomingStatepointValue(), llvm::AArch64InstrInfo::storeRegToStackSlot(), llvm::ARCInstrInfo::storeRegToStackSlot(), llvm::ARMBaseInstrInfo::storeRegToStackSlot(), llvm::AVRInstrInfo::storeRegToStackSlot(), llvm::HexagonInstrInfo::storeRegToStackSlot(), llvm::LoongArchInstrInfo::storeRegToStackSlot(), llvm::M68kInstrInfo::storeRegToStackSlot(), llvm::MSP430InstrInfo::storeRegToStackSlot(), llvm::RISCVInstrInfo::storeRegToStackSlot(), llvm::SparcInstrInfo::storeRegToStackSlot(), llvm::Thumb1InstrInfo::storeRegToStackSlot(), llvm::Thumb2InstrInfo::storeRegToStackSlot(), llvm::VEInstrInfo::storeRegToStackSlot(), llvm::X86InstrInfo::storeRegToStackSlot(), llvm::XCoreInstrInfo::storeRegToStackSlot(), llvm::PPCInstrInfo::storeRegToStackSlotNoUpd(), and tryToElideArgumentCopy().

◆ getObjectSSPLayout()

◆ getOffsetAdjustment()

◆ getPristineRegs()

Return a set of physical registers that are pristine.

Pristine registers hold a value that is useless to the current function, but that must be preserved - they are callee saved registers that are not saved.

Before the PrologueEpilogueInserter has placed the CSR spill code, this method always returns an empty set.

Definition at line 115 of file MachineFrameInfo.cpp.

References getCalleeSavedInfo(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, isCalleeSavedInfoValid(), MRI, llvm::BitVector::reset(), llvm::BitVector::set(), and TRI.

Referenced by llvm::ARMFrameLowering::emitEpilogue(), llvm::AggressiveAntiDepBreaker::StartBlock(), and llvm::CriticalAntiDepBreaker::StartBlock().

◆ getRestorePoints()

◆ getSavePoints()

◆ getStackID()

See also

StackID

Definition at line 782 of file MachineFrameInfo.h.

Referenced by allSGPRSpillsAreDead(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), computeFreeStackSlots(), convertStackObjects(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), determineSVEStackSizes(), estimateStackSize(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), getRVVCalleeSavedInfo(), getScavSlotsNumForRVV(), getUnmanagedCSI(), hasScalableStackID(), llvm::AArch64FrameLowering::orderFrameObjects(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIMachineFunctionInfo::removeDeadFrameIndices(), and setObjectAlignment().

◆ getStackProtectorIndex()

◆ getStackSize()

Return the number of bytes that must be allocated to hold all of the fixed size frame objects.

This is only valid after Prolog/Epilog code insertion has finalized the stack frame layout.

Definition at line 607 of file MachineFrameInfo.h.

Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue(), llvm::ARMFrameLowering::adjustForSegmentedStacks(), llvm::X86FrameLowering::adjustForSegmentedStacks(), llvm::CodeViewDebug::beginFunctionImpl(), convertMFI(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::AVRRegisterInfo::eliminateFrameIndex(), llvm::LanaiRegisterInfo::eliminateFrameIndex(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::MSP430RegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::WebAssemblyRegisterInfo::eliminateFrameIndex(), llvm::XCoreRegisterInfo::eliminateFrameIndex(), llvm::XtensaRegisterInfo::eliminateFrameIndex(), llvm::SIFrameLowering::emitEntryFunctionPrologue(), llvm::ARCFrameLowering::emitEpilogue(), llvm::ARMFrameLowering::emitEpilogue(), llvm::AVRFrameLowering::emitEpilogue(), llvm::LoongArchFrameLowering::emitEpilogue(), llvm::M68kFrameLowering::emitEpilogue(), llvm::Mips16FrameLowering::emitEpilogue(), llvm::MipsSEFrameLowering::emitEpilogue(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::SIFrameLowering::emitEpilogue(), llvm::SparcFrameLowering::emitEpilogue(), llvm::Thumb1FrameLowering::emitEpilogue(), llvm::VEFrameLowering::emitEpilogue(), llvm::WebAssemblyFrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::XCoreFrameLowering::emitEpilogue(), llvm::XtensaFrameLowering::emitEpilogue(), llvm::SystemZAsmPrinter::emitFunctionEntryLabel(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::AVRFrameLowering::emitPrologue(), llvm::LanaiFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::M68kFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::MSP430FrameLowering::emitPrologue(), llvm::SIFrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::VEFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), llvm::AsmPrinter::emitStackSizeSection(), llvm::AsmPrinter::emitStackUsage(), llvm::X86FrameLowering::getDwarfFrameBase(), llvm::LoongArchFrameLowering::getFirstSPAdjustAmount(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::M68kFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::SparcFrameLowering::getFrameIndexReference(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::VEFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReferencePreferSP(), llvm::ARMBaseInstrInfo::getOutliningTypeImpl(), llvm::RISCVFrameLowering::getStackSizeWithRVVPadding(), llvm::HexagonFrameLowering::hasFPImpl(), llvm::PPCFrameLowering::hasFPImpl(), llvm::SIFrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), needsSplitStackProlog(), llvm::PPCRegisterInfo::prepareDynamicAlloca(), llvm::ARCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), and llvm::ARMFrameLowering::ResolveFrameIndexReference().

◆ getUnsafeStackSize()

◆ getUseLocalStackAllocationBlock()

◆ hasCalls()

Return true if the current function has any function calls.

Definition at line 641 of file MachineFrameInfo.h.

Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue(), llvm::ARCFrameLowering::assignCalleeSavedSpillSlots(), llvm::PPCFrameLowering::assignCalleeSavedSpillSlots(), llvm::AArch64FrameLowering::canUseRedZone(), convertMFI(), llvm::CSKYFrameLowering::determineCalleeSaves(), llvm::SystemZELFFrameLowering::determineCalleeSaves(), llvm::SIFrameLowering::determineCalleeSavesSGPR(), llvm::SIFrameLowering::determinePrologEpilogSGPRSaves(), llvm::TargetOptions::DisableFramePointerElim(), llvm::SIFrameLowering::emitEntryFunctionPrologue(), llvm::ARCFrameLowering::emitEpilogue(), llvm::ARCFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::TargetOptions::FramePointerIsReserved(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::HexagonFrameLowering::hasFPImpl(), llvm::SIFrameLowering::hasFPImpl(), isXPLeafCandidate(), llvm::WebAssemblyFrameLowering::needsPrologForEH(), llvm::SIRegisterInfo::requiresRegisterScavenging(), llvm::SIFrameLowering::requiresStackPointerReference(), reservePrivateMemoryRegs(), llvm::SelectionDAGISel::runOnMachineFunction(), and llvm::InstructionSelect::selectMachineFunction().

◆ hasCopyImplyingStackAdjustment()

◆ hasFunctionContextIndex()

◆ hasMustTailInVarArgFunc()

◆ hasOpaqueSPAdjustment()

◆ hasPatchPoint()

◆ hasScalableStackID()

◆ hasStackMap()

◆ hasStackObjects()

◆ hasStackProtectorIndex()

◆ hasTailCall()

◆ hasVarSizedObjects()

This method may be called any time after instruction selection is complete to determine if the stack frame for this function contains any variable sized objects.

Definition at line 366 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::CodeViewDebug::beginFunctionImpl(), llvm::AArch64RegisterInfo::cannotEliminateFrame(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::ARMFrameLowering::canSimplifyCallFramePseudos(), CantUseSP(), CantUseSP(), llvm::MipsSEFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::AArch64FrameLowering::eliminateCallFramePseudoInstr(), llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::ARMBaseRegisterInfo::eliminateFrameIndex(), llvm::ThumbRegisterInfo::eliminateFrameIndex(), llvm::AVRFrameLowering::emitEpilogue(), llvm::LoongArchFrameLowering::emitEpilogue(), llvm::M68kFrameLowering::emitEpilogue(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::RISCVFrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::SystemZAsmPrinter::emitFunctionEntryLabel(), llvm::ARMFrameLowering::emitPrologue(), llvm::LanaiFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::AsmPrinter::emitStackSizeSection(), llvm::AsmPrinter::emitStackUsage(), estimateStackSize(), frameTriviallyRequiresSP(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::AArch64FrameLowering::getFrameIndexReferencePreferSP(), llvm::R600InstrInfo::getIndirectIndexEnd(), llvm::ARMSubtarget::getPushPopSplitVariation(), llvm::MipsRegisterInfo::getReservedRegs(), llvm::AArch64RegisterInfo::hasBasePointer(), llvm::ARMBaseRegisterInfo::hasBasePointer(), llvm::LanaiRegisterInfo::hasBasePointer(), llvm::CSKYFrameLowering::hasBP(), llvm::LoongArchFrameLowering::hasBP(), llvm::MipsFrameLowering::hasBP(), llvm::RISCVFrameLowering::hasBP(), llvm::VEFrameLowering::hasBP(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::ARCFrameLowering::hasFPImpl(), llvm::ARMFrameLowering::hasFPImpl(), llvm::AVRFrameLowering::hasFPImpl(), llvm::CSKYFrameLowering::hasFPImpl(), llvm::HexagonFrameLowering::hasFPImpl(), llvm::LoongArchFrameLowering::hasFPImpl(), llvm::M68kFrameLowering::hasFPImpl(), llvm::MipsFrameLowering::hasFPImpl(), llvm::MSP430FrameLowering::hasFPImpl(), llvm::RISCVFrameLowering::hasFPImpl(), llvm::SparcFrameLowering::hasFPImpl(), llvm::SystemZELFFrameLowering::hasFPImpl(), llvm::SystemZXPLINKFrameLowering::hasFPImpl(), llvm::VEFrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), llvm::X86FrameLowering::hasFPImpl(), llvm::XCoreFrameLowering::hasFPImpl(), llvm::XtensaFrameLowering::hasFPImpl(), llvm::AArch64FrameLowering::hasReservedCallFrame(), llvm::ARMFrameLowering::hasReservedCallFrame(), llvm::AVRFrameLowering::hasReservedCallFrame(), llvm::CSKYFrameLowering::hasReservedCallFrame(), llvm::LoongArchFrameLowering::hasReservedCallFrame(), llvm::M68kFrameLowering::hasReservedCallFrame(), llvm::Mips16FrameLowering::hasReservedCallFrame(), llvm::MipsSEFrameLowering::hasReservedCallFrame(), llvm::MSP430FrameLowering::hasReservedCallFrame(), llvm::RISCVFrameLowering::hasReservedCallFrame(), llvm::SparcFrameLowering::hasReservedCallFrame(), llvm::Thumb1FrameLowering::hasReservedCallFrame(), llvm::WebAssemblyFrameLowering::hasReservedCallFrame(), llvm::X86FrameLowering::hasReservedCallFrame(), isXPLeafCandidate(), llvm::HexagonFrameLowering::needsAligna(), llvm::PPCFrameLowering::needsFP(), llvm::ARMBaseRegisterInfo::needsFrameBaseReg(), llvm::HexagonFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::replaceFPWithRealFP(), and llvm::HexagonDAGToDAGISel::SelectFrameIndex().

◆ hasVAStart()

◆ isAliasedObjectIndex()

◆ isCalleeSavedInfoValid()

Has the callee saved info been calculated yet?

Definition at line 854 of file MachineFrameInfo.h.

Referenced by llvm::LiveRegUnits::addLiveOuts(), llvm::LivePhysRegs::addLiveOutsNoPristines(), convertMFI(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), llvm::TargetFrameLowering::getCalleeSaves(), llvm::ARMBaseInstrInfo::getOutliningTypeImpl(), getPristineRegs(), getSVECalleeSaveSlotRange(), llvm::recomputeLivenessFlags(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), and llvm::ARMFrameLowering::updateLRRestored().

◆ isCalleeSavedObjectIndex()

◆ isDeadObjectIndex()

Returns true if the specified index corresponds to a dead object.

Definition at line 796 of file MachineFrameInfo.h.

References assert().

Referenced by allSGPRSpillsAreDead(), allStackObjectsAreDead(), convertStackObjects(), llvm::SSPLayoutInfo::copyToMachineFrameInfo(), determineSVEStackSizes(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), estimateStackSize(), getObjectOffset(), setObjectOffset(), and setObjectSSPLayout().

◆ isFixedObjectIndex()

Returns true if the specified index corresponds to a fixed stack object.

Definition at line 720 of file MachineFrameInfo.h.

Referenced by llvm::GISelAddressing::aliasIsKnownForLoadStore(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), llvm::BaseIndexOffset::computeAliasing(), llvm::X86RegisterInfo::eliminateFrameIndex(), llvm::PPCFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitPrologue(), llvm::BaseIndexOffset::equalBaseIndex(), llvm::yaml::FrameIndex::FrameIndex(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::VEFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReferencePreferSP(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), llvm::X86InstrInfo::loadRegFromStackSlot(), LowerAsSplatVectorLoad(), MatchingStackOffset(), MatchingStackOffset(), printFrameIndex(), llvm::SIFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), llvm::AVRFrameAnalyzer::runOnMachineFunction(), llvm::HexagonDAGToDAGISel::SelectAddrFI(), shouldClusterFI(), and llvm::X86InstrInfo::storeRegToStackSlot().

◆ isFrameAddressTaken()

This method may be called any time after instruction selection is complete to determine if there is a call to @llvm.frameaddress in this function.

Definition at line 382 of file MachineFrameInfo.h.

Referenced by llvm::AArch64RegisterInfo::cannotEliminateFrame(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), convertMFI(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::PPCFrameLowering::emitPrologue(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::ARCFrameLowering::hasFPImpl(), llvm::ARMFrameLowering::hasFPImpl(), llvm::CSKYFrameLowering::hasFPImpl(), llvm::LoongArchFrameLowering::hasFPImpl(), llvm::M68kFrameLowering::hasFPImpl(), llvm::MipsFrameLowering::hasFPImpl(), llvm::MSP430FrameLowering::hasFPImpl(), llvm::RISCVFrameLowering::hasFPImpl(), llvm::SIFrameLowering::hasFPImpl(), llvm::SparcFrameLowering::hasFPImpl(), llvm::VEFrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), and llvm::X86FrameLowering::hasFPImpl().

◆ isImmutableObjectIndex()

◆ isMaxCallFrameSizeComputed()

◆ isObjectPreAllocated()

◆ isObjectSExt()

◆ isObjectZExt()

◆ isReturnAddressTaken()

◆ isScalableStackID()

◆ isSpillSlotObjectIndex()

◆ isStackRealignable()

◆ isStatepointSpillSlotObjectIndex()

◆ isVariableSizedObjectIndex()

◆ mapLocalFrameObject()

◆ markAsStatepointSpillSlotObjectIndex()

◆ needsSplitStackProlog()

◆ print()

◆ RemoveStackObject()

◆ setAdjustsStack()

◆ setCalleeSavedInfo()

◆ setCalleeSavedInfoValid()

◆ setCVBytesOfCalleeSavedRegisters()

◆ setFrameAddressIsTaken()

◆ setFunctionContextIndex()

◆ setHasCalls()

◆ setHasCopyImplyingStackAdjustment()

◆ setHasMustTailInVarArgFunc()

◆ setHasOpaqueSPAdjustment()

◆ setHasPatchPoint()

◆ setHasStackMap()

◆ setHasTailCall()

◆ setHasVAStart()

◆ setIsAliasedObjectIndex()

◆ setIsCalleeSavedObjectIndex()

◆ setIsImmutableObjectIndex()

◆ setLocalFrameMaxAlign()

Required alignment of the local object blob, which is the strictest alignment of any object in it.

Definition at line 453 of file MachineFrameInfo.h.

◆ setLocalFrameSize()

◆ setMaxCallFrameSize()

◆ setObjectAlignment()

◆ setObjectOffset()

Set the stack frame offset of the specified object.

The offset is relative to the stack pointer on entry to the function.

Definition at line 582 of file MachineFrameInfo.h.

References assert(), and isDeadObjectIndex().

Referenced by AdjustStackOffset(), AdjustStackOffset(), llvm::ARCFrameLowering::assignCalleeSavedSpillSlots(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), determineSVEStackSizes(), llvm::PPCFrameLowering::emitPrologue(), llvm::XtensaFrameLowering::emitPrologue(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::AArch64FrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), and scavengeStackSlot().

◆ setObjectSExt()

◆ setObjectSize()

◆ setObjectSSPLayout()

◆ setObjectZExt()

◆ setOffsetAdjustment()

◆ setRestorePoints()

◆ setReturnAddressIsTaken()

◆ setSavePoints()

◆ setStackID()

◆ setStackProtectorIndex()

◆ setStackSize()

◆ setUnsafeStackSize()

◆ setUseLocalStackAllocationBlock()

setUseLocalStackAllocationBlock - Set whether the local allocation blob should be allocated together or let PEI allocate the locals in it directly.

Definition at line 469 of file MachineFrameInfo.h.

Referenced by INITIALIZE_PASS().

◆ shouldRealignStack()

The documentation for this class was generated from the following files:

• include/llvm/CodeGen/MachineFrameInfo.h
• lib/CodeGen/MachineFrameInfo.cpp