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//===--------------------- SIFrameLowering.h --------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_AMDGPU_SIFRAMELOWERING_H
#define LLVM_LIB_TARGET_AMDGPU_SIFRAMELOWERING_H
#include "AMDGPUFrameLowering.h"
namespace llvm {
class SIInstrInfo;
class SIMachineFunctionInfo;
class SIRegisterInfo;
class SISubtarget;
class SIFrameLowering final : public AMDGPUFrameLowering {
public:
SIFrameLowering(StackDirection D, unsigned StackAl, int LAO,
unsigned TransAl = 1) :
AMDGPUFrameLowering(D, StackAl, LAO, TransAl) {}
~SIFrameLowering() override = default;
void emitEntryFunctionPrologue(MachineFunction &MF,
MachineBasicBlock &MBB) const;
void emitPrologue(MachineFunction &MF,
MachineBasicBlock &MBB) const override;
void emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const override;
int getFrameIndexReference(const MachineFunction &MF, int FI,
unsigned &FrameReg) const override;
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
RegScavenger *RS = nullptr) const override;
void processFunctionBeforeFrameFinalized(
MachineFunction &MF,
RegScavenger *RS = nullptr) const override;
MachineBasicBlock::iterator
eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const override;
private:
void emitFlatScratchInit(const SISubtarget &ST,
MachineFunction &MF,
MachineBasicBlock &MBB) const;
unsigned getReservedPrivateSegmentBufferReg(
const SISubtarget &ST,
const SIInstrInfo *TII,
const SIRegisterInfo *TRI,
SIMachineFunctionInfo *MFI,
MachineFunction &MF) const;
std::pair<unsigned, unsigned> getReservedPrivateSegmentWaveByteOffsetReg(
const SISubtarget &ST,
const SIInstrInfo *TII,
const SIRegisterInfo *TRI,
SIMachineFunctionInfo *MFI,
MachineFunction &MF) const;
/// \brief Emits debugger prologue.
void emitDebuggerPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const;
// Emit scratch setup code for AMDPAL or Mesa, assuming ResourceRegUsed is set.
void emitEntryFunctionScratchSetup(const SISubtarget &ST, MachineFunction &MF,
MachineBasicBlock &MBB, SIMachineFunctionInfo *MFI,
MachineBasicBlock::iterator I, unsigned PreloadedPrivateBufferReg,
unsigned ScratchRsrcReg) const;
public:
bool hasFP(const MachineFunction &MF) const override;
bool hasSP(const MachineFunction &MF) const;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_AMDGPU_SIFRAMELOWERING_H
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