1 //==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- 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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_MSP430_MSP430FRAMELOWERING_H 14 #define LLVM_LIB_TARGET_MSP430_MSP430FRAMELOWERING_H 15 16 #include "MSP430.h" 17 #include "llvm/CodeGen/TargetFrameLowering.h" 18 19 namespace llvm { 20 class MSP430FrameLowering : public TargetFrameLowering { 21 protected: 22 23 public: 24 explicit MSP430FrameLowering() 25 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(2), -2, 26 Align(2)) {} 27 28 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into 29 /// the function. 30 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 31 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 32 33 MachineBasicBlock::iterator 34 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, 35 MachineBasicBlock::iterator I) const override; 36 37 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 38 MachineBasicBlock::iterator MI, 39 ArrayRef<CalleeSavedInfo> CSI, 40 const TargetRegisterInfo *TRI) const override; 41 bool 42 restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 43 MachineBasicBlock::iterator MI, 44 MutableArrayRef<CalleeSavedInfo> CSI, 45 const TargetRegisterInfo *TRI) const override; 46 47 bool hasFP(const MachineFunction &MF) const override; 48 bool hasReservedCallFrame(const MachineFunction &MF) const override; 49 void processFunctionBeforeFrameFinalized(MachineFunction &MF, 50 RegScavenger *RS = nullptr) const override; 51 }; 52 53 } // End llvm namespace 54 55 #endif 56