LLVM 20.0.0git
Public Member Functions | Protected Attributes | List of all members
llvm::RISCVFrameLowering Class Reference

#include "Target/RISCV/RISCVFrameLowering.h"

Inheritance diagram for llvm::RISCVFrameLowering:
Inheritance graph
[legend]

Public Member Functions

 RISCVFrameLowering (const RISCVSubtarget &STI)
 
void emitPrologue (MachineFunction &MF, MachineBasicBlock &MBB) const override
 emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
 
void emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const override
 
uint64_t getStackSizeWithRVVPadding (const MachineFunction &MF) const
 
StackOffset getFrameIndexReference (const MachineFunction &MF, int FI, Register &FrameReg) const override
 getFrameIndexReference - This method should return the base register and offset used to reference a frame index location.
 
void determineCalleeSaves (MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override
 This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() should actually get saved.
 
void processFunctionBeforeFrameFinalized (MachineFunction &MF, RegScavenger *RS) const override
 processFunctionBeforeFrameFinalized - This method is called immediately before the specified function's frame layout (MF.getFrameInfo()) is finalized.
 
bool hasFP (const MachineFunction &MF) const override
 hasFP - Return true if the specified function should have a dedicated frame pointer register.
 
bool hasBP (const MachineFunction &MF) const
 
bool hasReservedCallFrame (const MachineFunction &MF) const override
 hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required, we reserve argument space for call sites in the function immediately on entry to the current function.
 
MachineBasicBlock::iterator eliminateCallFramePseudoInstr (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI) const override
 This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy pseudo instructions (but only if the Target is using them).
 
bool assignCalleeSavedSpillSlots (MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI, unsigned &MinCSFrameIndex, unsigned &MaxCSFrameIndex) const override
 assignCalleeSavedSpillSlots - Allows target to override spill slot assignment logic.
 
bool spillCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
 spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of store instructions via storeRegToStackSlot().
 
bool restoreCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
 restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of load instructions via loadRegToStackSlot().
 
uint64_t getFirstSPAdjustAmount (const MachineFunction &MF) const
 
bool canUseAsPrologue (const MachineBasicBlock &MBB) const override
 Check whether or not the given MBB can be used as a prologue for the target.
 
bool canUseAsEpilogue (const MachineBasicBlock &MBB) const override
 Check whether or not the given MBB can be used as a epilogue for the target.
 
bool enableShrinkWrapping (const MachineFunction &MF) const override
 Returns true if the target will correctly handle shrink wrapping.
 
bool isSupportedStackID (TargetStackID::Value ID) const override
 
TargetStackID::Value getStackIDForScalableVectors () const override
 Returns the StackID that scalable vectors should be associated with.
 
bool isStackIdSafeForLocalArea (unsigned StackId) const override
 This method returns whether or not it is safe for an object with the given stack id to be bundled into the local area.
 
- Public Member Functions inherited from llvm::TargetFrameLowering
 TargetFrameLowering (StackDirection D, Align StackAl, int LAO, Align TransAl=Align(1), bool StackReal=true)
 
virtual ~TargetFrameLowering ()
 
StackDirection getStackGrowthDirection () const
 getStackGrowthDirection - Return the direction the stack grows
 
unsigned getStackAlignment () const
 getStackAlignment - This method returns the number of bytes to which the stack pointer must be aligned on entry to a function.
 
Align getStackAlign () const
 getStackAlignment - This method returns the number of bytes to which the stack pointer must be aligned on entry to a function.
 
virtual uint64_t getStackThreshold () const
 getStackThreshold - Return the maximum stack size
 
int alignSPAdjust (int SPAdj) const
 alignSPAdjust - This method aligns the stack adjustment to the correct alignment.
 
Align getTransientStackAlign () const
 getTransientStackAlignment - This method returns the number of bytes to which the stack pointer must be aligned at all times, even between calls.
 
bool isStackRealignable () const
 isStackRealignable - This method returns whether the stack can be realigned.
 
virtual bool isStackIdSafeForLocalArea (unsigned StackId) const
 This method returns whether or not it is safe for an object with the given stack id to be bundled into the local area.
 
int getOffsetOfLocalArea () const
 getOffsetOfLocalArea - This method returns the offset of the local area from the stack pointer on entrance to a function.
 
virtual bool allocateScavengingFrameIndexesNearIncomingSP (const MachineFunction &MF) const
 Control the placement of special register scavenging spill slots when allocating a stack frame.
 
virtual bool assignCalleeSavedSpillSlots (MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI, unsigned &MinCSFrameIndex, unsigned &MaxCSFrameIndex) const
 assignCalleeSavedSpillSlots - Allows target to override spill slot assignment logic.
 
virtual bool assignCalleeSavedSpillSlots (MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI) const
 
virtual const SpillSlotgetCalleeSavedSpillSlots (unsigned &NumEntries) const
 getCalleeSavedSpillSlots - This method returns a pointer to an array of pairs, that contains an entry for each callee saved register that must be spilled to a particular stack location if it is spilled.
 
virtual bool targetHandlesStackFrameRounding () const
 targetHandlesStackFrameRounding - Returns true if the target is responsible for rounding up the stack frame (probably at emitPrologue time).
 
virtual bool enableShrinkWrapping (const MachineFunction &MF) const
 Returns true if the target will correctly handle shrink wrapping.
 
virtual bool enableStackSlotScavenging (const MachineFunction &MF) const
 Returns true if the stack slot holes in the fixed and callee-save stack area should be used when allocating other stack locations to reduce stack size.
 
virtual bool enableCalleeSaveSkip (const MachineFunction &MF) const
 Returns true if the target can safely skip saving callee-saved registers for noreturn nounwind functions.
 
virtual void emitPrologue (MachineFunction &MF, MachineBasicBlock &MBB) const =0
 emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
 
virtual void emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const =0
 
virtual void emitZeroCallUsedRegs (BitVector RegsToZero, MachineBasicBlock &MBB) const
 emitZeroCallUsedRegs - Zeros out call used registers.
 
virtual void emitCalleeSavedFrameMovesFullCFA (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI) const
 With basic block sections, emit callee saved frame moves for basic blocks that are in a different section.
 
virtual bool enableCFIFixup (MachineFunction &MF) const
 Returns true if we may need to fix the unwind information for the function.
 
virtual void resetCFIToInitialState (MachineBasicBlock &MBB) const
 Emit CFI instructions that recreate the state of the unwind information upon fucntion entry.
 
virtual void inlineStackProbe (MachineFunction &MF, MachineBasicBlock &PrologueMBB) const
 Replace a StackProbe stub (if any) with the actual probe code inline.
 
virtual bool stackProbeFunctionModifiesSP () const
 Does the stack probe function call return with a modified stack pointer?
 
virtual void adjustForSegmentedStacks (MachineFunction &MF, MachineBasicBlock &PrologueMBB) const
 Adjust the prologue to have the function use segmented stacks.
 
virtual void adjustForHiPEPrologue (MachineFunction &MF, MachineBasicBlock &PrologueMBB) const
 Adjust the prologue to add Erlang Run-Time System (ERTS) specific code in the assembly prologue to explicitly handle the stack.
 
virtual bool spillCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const
 spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of store instructions via storeRegToStackSlot().
 
virtual bool restoreCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const
 restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of load instructions via loadRegToStackSlot().
 
virtual bool keepFramePointer (const MachineFunction &MF) const
 Return true if the target wants to keep the frame pointer regardless of the function attribute "frame-pointer".
 
virtual bool hasFP (const MachineFunction &MF) const =0
 hasFP - Return true if the specified function should have a dedicated frame pointer register.
 
virtual bool hasReservedCallFrame (const MachineFunction &MF) const
 hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required, we reserve argument space for call sites in the function immediately on entry to the current function.
 
virtual bool canSimplifyCallFramePseudos (const MachineFunction &MF) const
 canSimplifyCallFramePseudos - When possible, it's best to simplify the call frame pseudo ops before doing frame index elimination.
 
virtual bool needsFrameIndexResolution (const MachineFunction &MF) const
 
virtual StackOffset getFrameIndexReference (const MachineFunction &MF, int FI, Register &FrameReg) const
 getFrameIndexReference - This method should return the base register and offset used to reference a frame index location.
 
virtual StackOffset getFrameIndexReferencePreferSP (const MachineFunction &MF, int FI, Register &FrameReg, bool IgnoreSPUpdates) const
 Same as getFrameIndexReference, except that the stack pointer (as opposed to the frame pointer) will be the preferred value for FrameReg.
 
virtual StackOffset getNonLocalFrameIndexReference (const MachineFunction &MF, int FI) const
 getNonLocalFrameIndexReference - This method returns the offset used to reference a frame index location.
 
virtual StackOffset getFrameIndexReferenceFromSP (const MachineFunction &MF, int FI) const
 getFrameIndexReferenceFromSP - This method returns the offset from the stack pointer to the slot of the specified index.
 
virtual void getCalleeSaves (const MachineFunction &MF, BitVector &SavedRegs) const
 Returns the callee-saved registers as computed by determineCalleeSaves in the BitVector SavedRegs.
 
virtual void determineCalleeSaves (MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const
 This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() should actually get saved.
 
virtual void processFunctionBeforeFrameFinalized (MachineFunction &MF, RegScavenger *RS=nullptr) const
 processFunctionBeforeFrameFinalized - This method is called immediately before the specified function's frame layout (MF.getFrameInfo()) is finalized.
 
virtual void processFunctionBeforeFrameIndicesReplaced (MachineFunction &MF, RegScavenger *RS=nullptr) const
 processFunctionBeforeFrameIndicesReplaced - This method is called immediately before MO_FrameIndex operands are eliminated, but after the frame is finalized.
 
virtual unsigned getWinEHParentFrameOffset (const MachineFunction &MF) const
 
virtual MachineBasicBlock::iterator eliminateCallFramePseudoInstr (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI) const
 This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy pseudo instructions (but only if the Target is using them).
 
virtual void orderFrameObjects (const MachineFunction &MF, SmallVectorImpl< int > &objectsToAllocate) const
 Order the symbols in the local stack frame.
 
virtual bool canUseAsPrologue (const MachineBasicBlock &MBB) const
 Check whether or not the given MBB can be used as a prologue for the target.
 
virtual bool canUseAsEpilogue (const MachineBasicBlock &MBB) const
 Check whether or not the given MBB can be used as a epilogue for the target.
 
virtual TargetStackID::Value getStackIDForScalableVectors () const
 Returns the StackID that scalable vectors should be associated with.
 
virtual bool isSupportedStackID (TargetStackID::Value ID) const
 
virtual bool isProfitableForNoCSROpt (const Function &F) const
 Check if the no-CSR optimisation is profitable for the given function.
 
virtual int getInitialCFAOffset (const MachineFunction &MF) const
 Return initial CFA offset value i.e.
 
virtual Register getInitialCFARegister (const MachineFunction &MF) const
 Return initial CFA register value i.e.
 
virtual DwarfFrameBase getDwarfFrameBase (const MachineFunction &MF) const
 Return the frame base information to be encoded in the DWARF subprogram debug info.
 
virtual void spillFPBP (MachineFunction &MF) const
 If frame pointer or base pointer is clobbered by an instruction, we should spill/restore it around that instruction.
 
virtual void emitRemarks (const MachineFunction &MF, MachineOptimizationRemarkEmitter *ORE) const
 This method is called at the end of prolog/epilog code insertion, so targets can emit remarks based on the final frame layout.
 

Protected Attributes

const RISCVSubtargetSTI
 

Additional Inherited Members

- Public Types inherited from llvm::TargetFrameLowering
enum  StackDirection { StackGrowsUp , StackGrowsDown }
 
- Static Public Member Functions inherited from llvm::TargetFrameLowering
static bool isSafeForNoCSROpt (const Function &F)
 Check if given function is safe for not having callee saved registers.
 

Detailed Description

Definition at line 22 of file RISCVFrameLowering.h.

Constructor & Destructor Documentation

◆ RISCVFrameLowering()

RISCVFrameLowering::RISCVFrameLowering ( const RISCVSubtarget STI)
explicit

Definition at line 38 of file RISCVFrameLowering.cpp.

Member Function Documentation

◆ assignCalleeSavedSpillSlots()

bool RISCVFrameLowering::assignCalleeSavedSpillSlots ( MachineFunction MF,
const TargetRegisterInfo TRI,
std::vector< CalleeSavedInfo > &  CSI,
unsigned MinCSFrameIndex,
unsigned MaxCSFrameIndex 
) const
overridevirtual

◆ canUseAsEpilogue()

bool RISCVFrameLowering::canUseAsEpilogue ( const MachineBasicBlock MBB) const
overridevirtual

Check whether or not the given MBB can be used as a epilogue for the target.

The epilogue will be inserted before the first terminator of that block. This method is used by the shrink-wrapping pass to decide if MBB will be correctly handled by the target. As soon as the target enable shrink-wrapping without overriding this method, we assume that each basic block is a valid epilogue.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1671 of file RISCVFrameLowering.cpp.

References llvm::MachineBasicBlock::getFallThrough(), llvm::MachineFunction::getInfo(), llvm::MachineBasicBlock::getParent(), llvm::MachineBasicBlock::isReturnBlock(), MBB, llvm::MachineBasicBlock::size(), llvm::MachineBasicBlock::succ_begin(), llvm::MachineBasicBlock::succ_empty(), llvm::MachineBasicBlock::succ_size(), and llvm::RISCVMachineFunctionInfo::useSaveRestoreLibCalls().

◆ canUseAsPrologue()

bool RISCVFrameLowering::canUseAsPrologue ( const MachineBasicBlock MBB) const
overridevirtual

Check whether or not the given MBB can be used as a prologue for the target.

The prologue will be inserted first in this basic block. This method is used by the shrink-wrapping pass to decide if MBB will be correctly handled by the target. As soon as the target enable shrink-wrapping without overriding this method, we assume that each basic block is a valid prologue.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1654 of file RISCVFrameLowering.cpp.

References llvm::RegScavenger::enterBasicBlock(), llvm::MachineFunction::getInfo(), llvm::MachineBasicBlock::getParent(), llvm::RegScavenger::isRegUsed(), MBB, and llvm::RISCVMachineFunctionInfo::useSaveRestoreLibCalls().

◆ determineCalleeSaves()

void RISCVFrameLowering::determineCalleeSaves ( MachineFunction MF,
BitVector SavedRegs,
RegScavenger RS 
) const
overridevirtual

This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() should actually get saved.

The default implementation checks populates the SavedRegs bitset with all registers which are modified in the function, targets may override this function to save additional registers. This method also sets up the register scavenger ensuring there is a free register or a frameindex available. This method should not be called by any passes outside of PEI, because it may change state passed in by MF and RS. The preferred interface outside PEI is getCalleeSaves.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1034 of file RISCVFrameLowering.cpp.

References llvm::TargetFrameLowering::determineCalleeSaves(), llvm::RISCVABI::getBPReg(), llvm::MachineFunction::getInfo(), hasBP(), hasFP(), llvm::BitVector::set(), and llvm::BitVector::test().

◆ eliminateCallFramePseudoInstr()

MachineBasicBlock::iterator RISCVFrameLowering::eliminateCallFramePseudoInstr ( MachineFunction MF,
MachineBasicBlock MBB,
MachineBasicBlock::iterator  MI 
) const
overridevirtual

This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy pseudo instructions (but only if the Target is using them).

It is responsible for eliminating these instructions, replacing them with concrete instructions. This method need only be implemented if using call frame setup/destroy pseudo instructions. Returns an iterator pointing to the instruction after the replaced one.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1289 of file RISCVFrameLowering.cpp.

References llvm::RISCVRegisterInfo::adjustReg(), llvm::TargetFrameLowering::alignSPAdjust(), DL, llvm::MachineBasicBlock::erase(), llvm::StackOffset::getFixed(), llvm::RISCVSubtarget::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlign(), hasReservedCallFrame(), MBB, MI, llvm::MachineInstr::NoFlags, and STI.

◆ emitEpilogue()

void RISCVFrameLowering::emitEpilogue ( MachineFunction MF,
MachineBasicBlock MBB 
) const
overridevirtual

◆ emitPrologue()

void RISCVFrameLowering::emitPrologue ( MachineFunction MF,
MachineBasicBlock MBB 
) const
overridevirtual

emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.

Implements llvm::TargetFrameLowering.

Definition at line 525 of file RISCVFrameLowering.cpp.

References llvm::MachineInstrBuilder::addCFIIndex(), llvm::MachineFunction::addFrameInst(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::MachineFrameInfo::adjustsStack(), llvm::alignDown(), llvm::alignTo(), assert(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::MCCFIInstruction::cfiDefCfa(), llvm::MCCFIInstruction::cfiDefCfaOffset(), createDefCFAExpression(), llvm::MCCFIInstruction::createOffset(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::LLVMContext::diagnose(), DL, emitSCSPrologue(), llvm::MachineBasicBlock::end(), llvm::MachineInstr::FrameSetup, llvm::RISCVABI::getBPReg(), llvm::MachineFrameInfo::getCalleeSavedInfo(), llvm::Function::getCallingConv(), llvm::Function::getContext(), getFirstSPAdjustAmount(), llvm::StackOffset::getFixed(), getFPReg(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::RISCVSubtarget::getInstrInfo(), getLibCallID(), llvm::MachineFrameInfo::getMaxAlign(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineFunction::getRegInfo(), llvm::RISCVSubtarget::getRegisterInfo(), getRVVCalleeSavedInfo(), getSPReg(), llvm::TargetFrameLowering::getStackAlign(), llvm::MachineFrameInfo::getStackID(), getStackSizeWithRVVPadding(), getUnmanagedCSI(), llvm::RISCVSubtarget::getXLen(), llvm::CallingConv::GHC, hasBP(), hasFP(), llvm::RISCVSubtarget::isRegisterReservedByUser(), llvm::MachineRegisterInfo::isReserved(), llvm::Log2(), MBB, MBBI, llvm::Offset, llvm::TargetStackID::ScalableVector, llvm::MachineInstrBuilder::setMIFlag(), llvm::size(), STI, TII, and llvm::Align::value().

◆ enableShrinkWrapping()

bool RISCVFrameLowering::enableShrinkWrapping ( const MachineFunction MF) const
overridevirtual

Returns true if the target will correctly handle shrink wrapping.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1646 of file RISCVFrameLowering.cpp.

References llvm::MachineFunction::getFunction(), and llvm::Function::hasOptNone().

◆ getFirstSPAdjustAmount()

uint64_t RISCVFrameLowering::getFirstSPAdjustAmount ( const MachineFunction MF) const

◆ getFrameIndexReference()

StackOffset RISCVFrameLowering::getFrameIndexReference ( const MachineFunction MF,
int  FI,
Register FrameReg 
) const
overridevirtual

◆ getStackIDForScalableVectors()

TargetStackID::Value RISCVFrameLowering::getStackIDForScalableVectors ( ) const
overridevirtual

Returns the StackID that scalable vectors should be associated with.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1713 of file RISCVFrameLowering.cpp.

References llvm::TargetStackID::ScalableVector.

◆ getStackSizeWithRVVPadding()

uint64_t RISCVFrameLowering::getStackSizeWithRVVPadding ( const MachineFunction MF) const

◆ hasBP()

bool RISCVFrameLowering::hasBP ( const MachineFunction MF) const

◆ hasFP()

bool RISCVFrameLowering::hasFP ( const MachineFunction MF) const
overridevirtual

◆ hasReservedCallFrame()

bool RISCVFrameLowering::hasReservedCallFrame ( const MachineFunction MF) const
overridevirtual

hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required, we reserve argument space for call sites in the function immediately on entry to the current function.

This eliminates the need for add/sub sp brackets around call sites. Returns true if the call frame is included as part of the stack frame.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 1283 of file RISCVFrameLowering.cpp.

References llvm::MachineFunction::getFrameInfo(), hasFP(), hasRVVFrameObject(), and llvm::MachineFrameInfo::hasVarSizedObjects().

Referenced by eliminateCallFramePseudoInstr(), emitEpilogue(), and hasBP().

◆ isStackIdSafeForLocalArea()

bool llvm::RISCVFrameLowering::isStackIdSafeForLocalArea ( unsigned  StackId) const
inlineoverridevirtual

This method returns whether or not it is safe for an object with the given stack id to be bundled into the local area.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 77 of file RISCVFrameLowering.h.

References llvm::TargetStackID::ScalableVector.

◆ isSupportedStackID()

bool RISCVFrameLowering::isSupportedStackID ( TargetStackID::Value  ID) const
overridevirtual

◆ processFunctionBeforeFrameFinalized()

void RISCVFrameLowering::processFunctionBeforeFrameFinalized ( MachineFunction MF,
RegScavenger RS 
) const
overridevirtual

◆ restoreCalleeSavedRegisters()

bool RISCVFrameLowering::restoreCalleeSavedRegisters ( MachineBasicBlock MBB,
MachineBasicBlock::iterator  MI,
MutableArrayRef< CalleeSavedInfo CSI,
const TargetRegisterInfo TRI 
) const
overridevirtual

◆ spillCalleeSavedRegisters()

bool RISCVFrameLowering::spillCalleeSavedRegisters ( MachineBasicBlock MBB,
MachineBasicBlock::iterator  MI,
ArrayRef< CalleeSavedInfo CSI,
const TargetRegisterInfo TRI 
) const
overridevirtual

Member Data Documentation

◆ STI

const RISCVSubtarget& llvm::RISCVFrameLowering::STI
protected

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