27void LanaiFrameLowering::determineFrameLayout(
MachineFunction &MF)
const {
44 MaxCallFrameSize =
alignTo(MaxCallFrameSize, StackAlign);
51 FrameSize += MaxCallFrameSize;
54 FrameSize =
alignTo(FrameSize, StackAlign);
63void LanaiFrameLowering::replaceAdjDynAllocPseudo(
MachineFunction &MF)
const {
70 if (
MI.getOpcode() == Lanai::ADJDYNALLOC) {
90 assert(&MF.
front() == &
MBB &&
"Shrink-wrapping not yet supported");
102 determineFrameLayout(MF);
126 if (StackSize != 0) {
135 replaceAdjDynAllocPseudo(MF);
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
MachineBasicBlock MachineBasicBlock::iterator MBBI
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
const LanaiSubtarget & STI
MachineBasicBlock::iterator eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const override
This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy p...
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
const LanaiRegisterInfo * getRegisterInfo() const override
const LanaiInstrInfo * getInstrInfo() const override
iterator getLastNonDebugInstr(bool SkipPseudoOp=true)
Returns an iterator to the last non-debug instruction in the basic block, or end().
instr_iterator erase(instr_iterator I)
Remove an instruction from the instruction list and delete it.
The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted.
void setMaxCallFrameSize(uint64_t S)
int CreateFixedObject(uint64_t Size, int64_t SPOffset, bool IsImmutable, bool isAliased=false)
Create a new object at a fixed location on the stack.
bool hasVarSizedObjects() const
This method may be called any time after instruction selection is complete to determine if the stack ...
uint64_t getStackSize() const
Return the number of bytes that must be allocated to hold all of the fixed size frame objects.
bool adjustsStack() const
Return true if this function adjusts the stack – e.g., when calling another function.
Align getMaxAlign() const
Return the alignment in bytes that this function must be aligned to, which is greater than the defaul...
uint64_t getMaxCallFrameSize() const
Return the maximum size of a call frame that must be allocated for an outgoing function call.
void setStackSize(uint64_t Size)
Set the size of the stack.
MachineFrameInfo & getFrameInfo()
getFrameInfo - Return the frame info object for the current function.
const MachineBasicBlock & front() const
const MachineInstrBuilder & setMIFlag(MachineInstr::MIFlag Flag) const
const MachineInstrBuilder & addImm(int64_t Val) const
Add a new immediate operand.
const MachineInstrBuilder & addReg(Register RegNo, unsigned flags=0, unsigned SubReg=0) const
Add a new virtual register operand.
Representation of each machine instruction.
Wrapper class representing virtual and physical registers.
virtual bool hasReservedCallFrame(const MachineFunction &MF) const
hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required,...
virtual void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
Align getStackAlign() const
getStackAlignment - This method returns the number of bytes to which the stack pointer must be aligne...
static unsigned makePreOp(unsigned AluOp)
This is an optimization pass for GlobalISel generic memory operations.
MachineInstrBuilder BuildMI(MachineFunction &MF, const MIMetadata &MIMD, const MCInstrDesc &MCID)
Builder interface. Specify how to create the initial instruction itself.
iterator_range< early_inc_iterator_impl< detail::IterOfRange< RangeT > > > make_early_inc_range(RangeT &&Range)
Make a range that does early increment to allow mutation of the underlying range without disrupting i...
uint64_t alignTo(uint64_t Size, Align A)
Returns a multiple of A needed to store Size bytes.
This struct is a compact representation of a valid (non-zero power of two) alignment.
Register getBaseRegister() const
bool hasBasePointer(const MachineFunction &MF) const