1 //===-- LanaiFrameLowering.h - Define frame lowering for Lanai --*- C++-*--===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This class implements Lanai-specific bits of TargetFrameLowering class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H 15 #define LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H 16 17 #include "Lanai.h" 18 #include "llvm/CodeGen/TargetFrameLowering.h" 19 20 namespace llvm { 21 22 class BitVector; 23 class LanaiSubtarget; 24 25 class LanaiFrameLowering : public TargetFrameLowering { 26 private: 27 void determineFrameLayout(MachineFunction &MF) const; 28 void replaceAdjDynAllocPseudo(MachineFunction &MF) const; 29 30 protected: 31 const LanaiSubtarget &STI; 32 33 public: 34 explicit LanaiFrameLowering(const LanaiSubtarget &Subtarget) 35 : TargetFrameLowering(StackGrowsDown, 36 /*StackAlignment=*/8, 37 /*LocalAreaOffset=*/0), 38 STI(Subtarget) {} 39 40 // emitProlog/emitEpilog - These methods insert prolog and epilog code into 41 // the function. 42 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 43 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 44 45 MachineBasicBlock::iterator 46 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, 47 MachineBasicBlock::iterator I) const override; 48 49 bool hasFP(const MachineFunction & /*MF*/) const override { return true; } 50 51 void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, 52 RegScavenger *RS = nullptr) const override; 53 }; 54 55 } // namespace llvm 56 57 #endif // LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H 58
