45 int FI,
unsigned &FrameReg)
const {
82 if (!CSRegs || CSRegs[0] == 0)
105 for (
unsigned i = 0; CSRegs[i]; ++i) {
106 unsigned Reg = CSRegs[i];
void resize(unsigned N, bool t=false)
resize - Grow or shrink the bitvector.
This class represents lattice values for constants.
virtual int getFrameIndexReference(const MachineFunction &MF, int FI, unsigned &FrameReg) const
getFrameIndexReference - This method should return the base register and offset used to reference a f...
virtual const TargetRegisterInfo * getRegisterInfo() const
getRegisterInfo - If register information is available, return it.
bool hasStackObjects() const
Return true if there are any stack objects in this function.
bool isPhysRegModified(unsigned PhysReg, bool SkipNoReturnDef=false) const
Return true if the specified register is modified in this function.
bool hasFnAttribute(Attribute::AttrKind Kind) const
Return true if the function has the attribute.
unsigned const TargetRegisterInfo * TRI
int getOffsetOfLocalArea() const
getOffsetOfLocalArea - This method returns the offset of the local area from the stack pointer on ent...
virtual void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
#define LLVM_UNLIKELY(EXPR)
static bool isSafeForNoCSROpt(const Function &F)
Check if given function is safe for not having callee saved registers.
unsigned EnableIPRA
This flag enables InterProcedural Register Allocation (IPRA).
int64_t getObjectOffset(int ObjectIdx) const
Return the assigned stack offset of the specified object from the incoming stack pointer.
virtual ~TargetFrameLowering()
This file contains the simple types necessary to represent the attributes associated with functions a...
The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted...
virtual unsigned getFrameRegister(const MachineFunction &MF) const =0
Debug information queries.
virtual unsigned getStackAlignmentSkew(const MachineFunction &MF) const
Return the skew that has to be applied to stack alignment under certain conditions (e...
virtual bool needsFrameIndexResolution(const MachineFunction &MF) const
uint16_t MCPhysReg
An unsigned integer type large enough to represent all physical registers, but not necessarily virtua...
unsigned getAllocaPointerSize() const
unsigned getNumRegs() const
Return the number of registers this target has (useful for sizing arrays holding per register informa...
unsigned const MachineRegisterInfo * MRI
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
MachineFrameInfo & getFrameInfo()
getFrameInfo - Return the frame info object for the current function.
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
CallingConv::ID getCallingConv() const
getCallingConv()/setCallingConv(CC) - These method get and set the calling convention of this functio...
bool callsUnwindInit() const
const Function & getFunction() const
Return the LLVM function that this machine code represents.
MachineRegisterInfo - Keep track of information for virtual and physical registers, including vreg register classes, use/def chains for registers, etc.
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
virtual bool enableCalleeSaveSkip(const MachineFunction &MF) const
Returns true if the target can safely skip saving callee-saved registers for noreturn nounwind functi...
int getOffsetAdjustment() const
Return the correction for frame offsets.
Calling convention used by HipHop Virtual Machine (HHVM) to perform calls to and from translation cac...
const LLVMTargetMachine & getTarget() const
getTarget - Return the target machine this machine code is compiled with
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
const MCPhysReg * getCalleeSavedRegs() const
Returns list of callee saved registers.
uint64_t getStackSize() const
Return the number of bytes that must be allocated to hold all of the fixed size frame objects...
virtual int getInitialCFAOffset(const MachineFunction &MF) const
Return initial CFA offset value i.e.
virtual unsigned getInitialCFARegister(const MachineFunction &MF) const
Return initial CFA register value i.e.