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1a4d82fc | 1 | //==-- AArch64FrameLowering.h - TargetFrameLowering for AArch64 --*- C++ -*-==// |
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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 | // | |
1a4d82fc | 10 | // |
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11 | // |
12 | //===----------------------------------------------------------------------===// | |
13 | ||
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14 | #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H |
15 | #define LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H | |
970d7e83 | 16 | |
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17 | #include "llvm/Target/TargetFrameLowering.h" |
18 | ||
19 | namespace llvm { | |
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20 | |
21 | class AArch64FrameLowering : public TargetFrameLowering { | |
970d7e83 | 22 | public: |
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23 | explicit AArch64FrameLowering() |
24 | : TargetFrameLowering(StackGrowsDown, 16, 0, 16, | |
25 | false /*StackRealignable*/) {} | |
970d7e83 | 26 | |
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27 | void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB, |
28 | MachineBasicBlock::iterator MBBI, | |
29 | unsigned FramePtr) const; | |
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30 | |
31 | void eliminateCallFramePseudoInstr(MachineFunction &MF, | |
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32 | MachineBasicBlock &MBB, |
33 | MachineBasicBlock::iterator I) const override; | |
970d7e83 | 34 | |
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35 | /// emitProlog/emitEpilog - These methods insert prolog and epilog code into |
36 | /// the function. | |
37 | void emitPrologue(MachineFunction &MF) const override; | |
38 | void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; | |
39 | ||
40 | int getFrameIndexOffset(const MachineFunction &MF, int FI) const override; | |
41 | int getFrameIndexReference(const MachineFunction &MF, int FI, | |
42 | unsigned &FrameReg) const override; | |
43 | int resolveFrameIndexReference(const MachineFunction &MF, int FI, | |
44 | unsigned &FrameReg, | |
45 | bool PreferFP = false) const; | |
46 | bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, | |
47 | MachineBasicBlock::iterator MI, | |
48 | const std::vector<CalleeSavedInfo> &CSI, | |
49 | const TargetRegisterInfo *TRI) const override; | |
50 | ||
51 | bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, | |
52 | MachineBasicBlock::iterator MI, | |
53 | const std::vector<CalleeSavedInfo> &CSI, | |
54 | const TargetRegisterInfo *TRI) const override; | |
55 | ||
56 | /// \brief Can this function use the red zone for local allocations. | |
57 | bool canUseRedZone(const MachineFunction &MF) const; | |
58 | ||
59 | bool hasFP(const MachineFunction &MF) const override; | |
60 | bool hasReservedCallFrame(const MachineFunction &MF) const override; | |
61 | ||
62 | void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, | |
63 | RegScavenger *RS) const override; | |
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64 | }; |
65 | ||
66 | } // End llvm namespace | |
67 | ||
68 | #endif |