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//===-- M68kMachineFunctionInfo.h - M68k private data -----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file declares the M68k specific subclass of MachineFunctionInfo.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_M68K_M68KMACHINEFUNCTION_H
#define LLVM_LIB_TARGET_M68K_M68KMACHINEFUNCTION_H
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineValueType.h"
namespace llvm {
class M68kMachineFunctionInfo : public MachineFunctionInfo {
/// Non-zero if the function has base pointer and makes call to
/// llvm.eh.sjlj.setjmp. When non-zero, the value is a displacement from the
/// frame pointer to a slot where the base pointer is stashed.
signed char RestoreBasePointerOffset = 0;
/// Size of the callee-saved register portion of the stack frame in bytes.
unsigned CalleeSavedFrameSize = 0;
/// Number of bytes function pops on return (in addition to the space used by
/// the return address). Used on windows platform for stdcall & fastcall
/// name decoration
unsigned BytesToPopOnReturn = 0;
/// FrameIndex for return slot.
int ReturnAddrIndex = 0;
/// The number of bytes by which return address stack slot is moved as the
/// result of tail call optimization.
int TailCallReturnAddrDelta = 0;
/// keeps track of the virtual register initialized for use as the global
/// base register. This is used for PIC in some PIC relocation models.
unsigned GlobalBaseReg = 0;
/// FrameIndex for start of varargs area.
int VarArgsFrameIndex = 0;
/// Keeps track of whether this function uses sequences of pushes to pass
/// function parameters.
bool HasPushSequences = false;
/// Some subtargets require that sret lowering includes
/// returning the value of the returned struct in a register. This field
/// holds the virtual register into which the sret argument is passed.
unsigned SRetReturnReg = 0;
/// A list of virtual and physical registers that must be forwarded to every
/// musttail call.
SmallVector<ForwardedRegister, 1> ForwardedMustTailRegParms;
/// The number of bytes on stack consumed by the arguments being passed on
/// the stack.
unsigned ArgumentStackSize = 0;
public:
explicit M68kMachineFunctionInfo(const Function &F,
const TargetSubtargetInfo *STI) {}
MachineFunctionInfo *
clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
const override;
bool getRestoreBasePointer() const { return RestoreBasePointerOffset != 0; }
void setRestoreBasePointer(const MachineFunction *MF);
int getRestoreBasePointerOffset() const { return RestoreBasePointerOffset; }
unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; }
unsigned getBytesToPopOnReturn() const { return BytesToPopOnReturn; }
void setBytesToPopOnReturn(unsigned bytes) { BytesToPopOnReturn = bytes; }
int getRAIndex() const { return ReturnAddrIndex; }
void setRAIndex(int Index) { ReturnAddrIndex = Index; }
int getTCReturnAddrDelta() const { return TailCallReturnAddrDelta; }
void setTCReturnAddrDelta(int delta) { TailCallReturnAddrDelta = delta; }
unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
bool getHasPushSequences() const { return HasPushSequences; }
void setHasPushSequences(bool HasPush) { HasPushSequences = HasPush; }
unsigned getSRetReturnReg() const { return SRetReturnReg; }
void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
unsigned getArgumentStackSize() const { return ArgumentStackSize; }
void setArgumentStackSize(unsigned size) { ArgumentStackSize = size; }
SmallVectorImpl<ForwardedRegister> &getForwardedMustTailRegParms() {
return ForwardedMustTailRegParms;
}
private:
virtual void anchor();
};
} // end of namespace llvm
#endif // LLVM_LIB_TARGET_M68K_M68KMACHINEFUNCTION_H
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