| //===-- LanaiFrameLowering.h - Define frame lowering for Lanai --*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This class implements Lanai-specific bits of TargetFrameLowering class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H |
| #define LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H |
| |
| #include "Lanai.h" |
| #include "llvm/CodeGen/TargetFrameLowering.h" |
| |
| namespace llvm { |
| |
| class BitVector; |
| class LanaiSubtarget; |
| |
| class LanaiFrameLowering : public TargetFrameLowering { |
| private: |
| void determineFrameLayout(MachineFunction &MF) const; |
| void replaceAdjDynAllocPseudo(MachineFunction &MF) const; |
| |
| protected: |
| const LanaiSubtarget &STI; |
| |
| public: |
| explicit LanaiFrameLowering(const LanaiSubtarget &Subtarget) |
| : TargetFrameLowering(StackGrowsDown, |
| /*StackAlignment=*/8, |
| /*LocalAreaOffset=*/0), |
| STI(Subtarget) {} |
| |
| // emitProlog/emitEpilog - These methods insert prolog and epilog code into |
| // the function. |
| void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
| void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
| |
| MachineBasicBlock::iterator |
| eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator I) const override; |
| |
| bool hasFP(const MachineFunction & /*MF*/) const override { return true; } |
| |
| void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, |
| RegScavenger *RS = nullptr) const override; |
| }; |
| |
| } // namespace llvm |
| |
| #endif // LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H |