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1//===-- SparcFrameLowering.h - Define frame lowering for Sparc --*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9//10//11//===----------------------------------------------------------------------===//12 13#ifndef LLVM_LIB_TARGET_SPARC_SPARCFRAMELOWERING_H14#define LLVM_LIB_TARGET_SPARC_SPARCFRAMELOWERING_H15 16#include "Sparc.h"17#include "llvm/CodeGen/TargetFrameLowering.h"18#include "llvm/Support/TypeSize.h"19 20namespace llvm {21 22class SparcSubtarget;23class SparcFrameLowering : public TargetFrameLowering {24public:25 explicit SparcFrameLowering(const SparcSubtarget &ST);26 27 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into28 /// the function.29 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;30 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;31 32 MachineBasicBlock::iterator33 eliminateCallFramePseudoInstr(MachineFunction &MF,34 MachineBasicBlock &MBB,35 MachineBasicBlock::iterator I) const override;36 37 bool hasReservedCallFrame(const MachineFunction &MF) const override;38 void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,39 RegScavenger *RS = nullptr) const override;40 41 StackOffset getFrameIndexReference(const MachineFunction &MF, int FI,42 Register &FrameReg) const override;43 44 /// targetHandlesStackFrameRounding - Returns true if the target is45 /// responsible for rounding up the stack frame (probably at emitPrologue46 /// time).47 bool targetHandlesStackFrameRounding() const override { return true; }48 49protected:50 bool hasFPImpl(const MachineFunction &MF) const override;51 52private:53 // Remap input registers to output registers for leaf procedure.54 void remapRegsForLeafProc(MachineFunction &MF) const;55 56 // Returns true if MF is a leaf procedure.57 bool isLeafProc(MachineFunction &MF) const;58 59 60 // Emits code for adjusting SP in function prologue/epilogue.61 void emitSPAdjustment(MachineFunction &MF,62 MachineBasicBlock &MBB,63 MachineBasicBlock::iterator MBBI,64 int NumBytes, unsigned ADDrr, unsigned ADDri) const;65 66};67 68} // End llvm namespace69 70#endif71