lib/Target/MSP430/MSP430FrameLowering.h

   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, 2, -2, 2) {}
  26
  27   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
  28   /// the function.
  29   void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
  30   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
  31
  32   MachineBasicBlock::iterator
  33   eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
  34                                 MachineBasicBlock::iterator I) const override;
  35
  36   bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
  37                                  MachineBasicBlock::iterator MI,
  38                                  const std::vector<CalleeSavedInfo> &CSI,
  39                                  const TargetRegisterInfo *TRI) const override;
  40   bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
  41                                   MachineBasicBlock::iterator MI,
  42                                   std::vector<CalleeSavedInfo> &CSI,
  43                                   const TargetRegisterInfo *TRI) const override;
  44
  45   bool hasFP(const MachineFunction &MF) const override;
  46   bool hasReservedCallFrame(const MachineFunction &MF) const override;
  47   void processFunctionBeforeFrameFinalized(MachineFunction &MF,
  48                                      RegScavenger *RS = nullptr) const override;
  49 };
  50
  51 } // End llvm namespace
  52
  53 #endif