181ad6265SDimitry Andric //=- LoongArchFrameLowering.h - TargetFrameLowering for LoongArch -*- C++ -*--// 281ad6265SDimitry Andric // 381ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 481ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 581ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 681ad6265SDimitry Andric // 781ad6265SDimitry Andric //===----------------------------------------------------------------------===// 881ad6265SDimitry Andric // 981ad6265SDimitry Andric // This class implements LoongArch-specific bits of TargetFrameLowering class. 1081ad6265SDimitry Andric // 1181ad6265SDimitry Andric //===----------------------------------------------------------------------===// 1281ad6265SDimitry Andric 1381ad6265SDimitry Andric #ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHFRAMELOWERING_H 1481ad6265SDimitry Andric #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHFRAMELOWERING_H 1581ad6265SDimitry Andric 1681ad6265SDimitry Andric #include "llvm/CodeGen/TargetFrameLowering.h" 1781ad6265SDimitry Andric 1881ad6265SDimitry Andric namespace llvm { 1981ad6265SDimitry Andric class LoongArchSubtarget; 2081ad6265SDimitry Andric 2181ad6265SDimitry Andric class LoongArchFrameLowering : public TargetFrameLowering { 2281ad6265SDimitry Andric const LoongArchSubtarget &STI; 2381ad6265SDimitry Andric 2481ad6265SDimitry Andric public: LoongArchFrameLowering(const LoongArchSubtarget & STI)2581ad6265SDimitry Andric explicit LoongArchFrameLowering(const LoongArchSubtarget &STI) 2681ad6265SDimitry Andric : TargetFrameLowering(StackGrowsDown, 2781ad6265SDimitry Andric /*StackAlignment=*/Align(16), 2881ad6265SDimitry Andric /*LocalAreaOffset=*/0), 2981ad6265SDimitry Andric STI(STI) {} 3081ad6265SDimitry Andric 3181ad6265SDimitry Andric void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 3281ad6265SDimitry Andric void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 3381ad6265SDimitry Andric 34753f127fSDimitry Andric void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, 35753f127fSDimitry Andric RegScavenger *RS) const override; 36753f127fSDimitry Andric 37bdd1243dSDimitry Andric void processFunctionBeforeFrameFinalized(MachineFunction &MF, 38bdd1243dSDimitry Andric RegScavenger *RS) const override; 39bdd1243dSDimitry Andric 40bdd1243dSDimitry Andric bool hasReservedCallFrame(const MachineFunction &MF) const override; 41753f127fSDimitry Andric MachineBasicBlock::iterator 42753f127fSDimitry Andric eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, 43bdd1243dSDimitry Andric MachineBasicBlock::iterator MI) const override; 44bdd1243dSDimitry Andric bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 45bdd1243dSDimitry Andric MachineBasicBlock::iterator MI, 46bdd1243dSDimitry Andric ArrayRef<CalleeSavedInfo> CSI, 47bdd1243dSDimitry Andric const TargetRegisterInfo *TRI) const override; 48753f127fSDimitry Andric 49753f127fSDimitry Andric StackOffset getFrameIndexReference(const MachineFunction &MF, int FI, 50753f127fSDimitry Andric Register &FrameReg) const override; 51753f127fSDimitry Andric 5281ad6265SDimitry Andric bool hasFP(const MachineFunction &MF) const override; 5381ad6265SDimitry Andric bool hasBP(const MachineFunction &MF) const; 54753f127fSDimitry Andric 55*0fca6ea1SDimitry Andric uint64_t getFirstSPAdjustAmount(const MachineFunction &MF) const; 56bdd1243dSDimitry Andric 5706c3fb27SDimitry Andric bool enableShrinkWrapping(const MachineFunction &MF) const override; 5806c3fb27SDimitry Andric 59753f127fSDimitry Andric private: 60753f127fSDimitry Andric void determineFrameLayout(MachineFunction &MF) const; 61753f127fSDimitry Andric void adjustReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, 62753f127fSDimitry Andric const DebugLoc &DL, Register DestReg, Register SrcReg, 63753f127fSDimitry Andric int64_t Val, MachineInstr::MIFlag Flag) const; 6481ad6265SDimitry Andric }; 65972a253aSDimitry Andric } // end namespace llvm 6681ad6265SDimitry Andric #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHFRAMELOWERING_H 67