42 int FI,
unsigned &FrameReg)
const {
79 if (!CSRegs || CSRegs[0] == 0)
89 for (
unsigned i = 0; CSRegs[
i]; ++
i) {
90 unsigned Reg = CSRegs[
i];
void resize(unsigned N, bool t=false)
resize - Grow or shrink the bitvector.
#define LLVM_UNLIKELY(EXPR)
Calling convention used by HipHop Virtual Machine (HHVM) to perform calls to and from translation cac...
virtual unsigned getStackAlignmentSkew(const MachineFunction &MF) const
Return the skew that has to be applied to stack alignment under certain conditions (e...
uint16_t MCPhysReg
An unsigned integer type large enough to represent all physical registers, but not necessarily virtua...
Attribute getFnAttribute(Attribute::AttrKind Kind) const
Return the attribute for the given attribute kind.
const Function * getFunction() const
getFunction - Return the LLVM function that this machine code represents
CallingConv::ID getCallingConv() const
getCallingConv()/setCallingConv(CC) - These method get and set the calling convention of this functio...
uint64_t getStackSize() const
Return the number of bytes that must be allocated to hold all of the fixed size frame objects...
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
unsigned EnableIPRA
This flag enables InterProcedural Register Allocation (IPRA).
virtual ~TargetFrameLowering()
Reg
All possible values of the reg field in the ModR/M byte.
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.
unsigned getNumRegs() const
Return the number of registers this target has (useful for sizing arrays holding per register informa...
bool hasStackObjects() const
Return true if there are any stack objects in this function.
int getOffsetAdjustment() const
Return the correction for frame offsets.
virtual bool needsFrameIndexResolution(const MachineFunction &MF) const
virtual const MCPhysReg * getCalleeSavedRegs(const MachineFunction *MF) const =0
Return a null-terminated list of all of the callee-saved registers on this target.
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...
unsigned const MachineRegisterInfo * MRI
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...
int64_t getObjectOffset(int ObjectIdx) const
Return the assigned stack offset of the specified object from the incoming stack pointer.
virtual void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
virtual bool noFramePointerElim(const MachineFunction &MF) const
Return true if the target needs to disable frame pointer elimination.
int getOffsetOfLocalArea() const
getOffsetOfLocalArea - This method returns the offset of the local area from the stack pointer on ent...
MachineRegisterInfo - Keep track of information for virtual and physical registers, including vreg register classes, use/def chains for registers, etc.
static bool isSafeForNoCSROpt(const Function *F)
Check if given function is safe for not having callee saved registers.
bool hasFnAttribute(Attribute::AttrKind Kind) const
Return true if the function has the attribute.
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
bool callsUnwindInit() const
const TargetMachine & getTarget() const
getTarget - Return the target machine this machine code is compiled with
bool isPhysRegModified(unsigned PhysReg, bool SkipNoReturnDef=false) const
Return true if the specified register is modified in this function.
unsigned getPointerSize() const
Get the pointer size for this target.
StringRef getValueAsString() const
Return the attribute's value as a string.
virtual const TargetRegisterInfo * getRegisterInfo() const
getRegisterInfo - If register information is available, return it.