1 //===-- XCoreFrameLowering.h - Frame info for XCore Target ------*- 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 // This file contains XCore frame information that doesn't fit anywhere else 10 // cleanly... 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H 15 #define LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H 16 17 #include "llvm/CodeGen/TargetFrameLowering.h" 18 #include "llvm/Target/TargetMachine.h" 19 20 namespace llvm { 21 class XCoreSubtarget; 22 23 class XCoreFrameLowering: public TargetFrameLowering { 24 public: 25 XCoreFrameLowering(const XCoreSubtarget &STI); 26 27 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into 28 /// the function. 29 void emitPrologue(MachineFunction &MF, 30 MachineBasicBlock &MBB) const override; 31 void emitEpilogue(MachineFunction &MF, 32 MachineBasicBlock &MBB) const override; 33 34 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 35 MachineBasicBlock::iterator MI, 36 const std::vector<CalleeSavedInfo> &CSI, 37 const TargetRegisterInfo *TRI) const override; 38 bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 39 MachineBasicBlock::iterator MI, 40 std::vector<CalleeSavedInfo> &CSI, 41 const TargetRegisterInfo *TRI) const override; 42 43 MachineBasicBlock::iterator 44 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, 45 MachineBasicBlock::iterator I) const override; 46 47 bool hasFP(const MachineFunction &MF) const override; 48 49 void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, 50 RegScavenger *RS = nullptr) const override; 51 52 void processFunctionBeforeFrameFinalized(MachineFunction &MF, 53 RegScavenger *RS = nullptr) const override; 54 55 //! Stack slot size (4 bytes) 56 static int stackSlotSize() { 57 return 4; 58 } 59 }; 60 } 61 62 #endif 63