10b57cec5SDimitry Andric //===- ARCFrameLowering.h - Define frame lowering for ARC -------*- C++ -*-===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 90b57cec5SDimitry Andric // This class implements the ARC specific frame lowering. 100b57cec5SDimitry Andric // 110b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric #ifndef LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H 140b57cec5SDimitry Andric #define LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H 150b57cec5SDimitry Andric 160b57cec5SDimitry Andric #include "ARC.h" 170b57cec5SDimitry Andric #include "llvm/CodeGen/MachineBasicBlock.h" 180b57cec5SDimitry Andric #include "llvm/CodeGen/MachineFrameInfo.h" 190b57cec5SDimitry Andric #include "llvm/CodeGen/TargetFrameLowering.h" 200b57cec5SDimitry Andric 210b57cec5SDimitry Andric namespace llvm { 220b57cec5SDimitry Andric 230b57cec5SDimitry Andric class MachineFunction; 240b57cec5SDimitry Andric class ARCSubtarget; 250b57cec5SDimitry Andric class ARCInstrInfo; 260b57cec5SDimitry Andric 270b57cec5SDimitry Andric class ARCFrameLowering : public TargetFrameLowering { 280b57cec5SDimitry Andric public: ARCFrameLowering(const ARCSubtarget & st)290b57cec5SDimitry Andric ARCFrameLowering(const ARCSubtarget &st) 308bcb0991SDimitry Andric : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(4), 0), 318bcb0991SDimitry Andric ST(st) {} 320b57cec5SDimitry Andric 330b57cec5SDimitry Andric /// Insert Prologue into the function. 340b57cec5SDimitry Andric void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 350b57cec5SDimitry Andric 360b57cec5SDimitry Andric /// Insert Epilogue into the function. 370b57cec5SDimitry Andric void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 380b57cec5SDimitry Andric 390b57cec5SDimitry Andric /// Add explicit callee save registers. 400b57cec5SDimitry Andric void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, 410b57cec5SDimitry Andric RegScavenger *RS) const override; 420b57cec5SDimitry Andric 430b57cec5SDimitry Andric bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 440b57cec5SDimitry Andric MachineBasicBlock::iterator MI, 45*5ffd83dbSDimitry Andric ArrayRef<CalleeSavedInfo> CSI, 460b57cec5SDimitry Andric const TargetRegisterInfo *TRI) const override; 470b57cec5SDimitry Andric 480b57cec5SDimitry Andric bool 490b57cec5SDimitry Andric restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 500b57cec5SDimitry Andric MachineBasicBlock::iterator MI, 51*5ffd83dbSDimitry Andric MutableArrayRef<CalleeSavedInfo> CSI, 520b57cec5SDimitry Andric const TargetRegisterInfo *TRI) const override; 530b57cec5SDimitry Andric 540b57cec5SDimitry Andric void processFunctionBeforeFrameFinalized(MachineFunction &MF, 550b57cec5SDimitry Andric RegScavenger *RS) const override; 560b57cec5SDimitry Andric 570b57cec5SDimitry Andric bool hasFP(const MachineFunction &MF) const override; 580b57cec5SDimitry Andric 590b57cec5SDimitry Andric MachineBasicBlock::iterator 600b57cec5SDimitry Andric eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, 610b57cec5SDimitry Andric MachineBasicBlock::iterator I) const override; 620b57cec5SDimitry Andric 630b57cec5SDimitry Andric bool assignCalleeSavedSpillSlots( 640b57cec5SDimitry Andric llvm::MachineFunction &, const llvm::TargetRegisterInfo *, 650b57cec5SDimitry Andric std::vector<llvm::CalleeSavedInfo> &) const override; 660b57cec5SDimitry Andric 670b57cec5SDimitry Andric private: 680b57cec5SDimitry Andric void adjustStackToMatchRecords(MachineBasicBlock &MBB, 690b57cec5SDimitry Andric MachineBasicBlock::iterator MI, 700b57cec5SDimitry Andric bool allocate) const; 710b57cec5SDimitry Andric 720b57cec5SDimitry Andric const ARCSubtarget &ST; 730b57cec5SDimitry Andric }; 740b57cec5SDimitry Andric 750b57cec5SDimitry Andric } // end namespace llvm 760b57cec5SDimitry Andric 770b57cec5SDimitry Andric #endif // LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H 78