/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/lib/Target/AArch64/AArch64FrameLowering.h
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1 | | //==-- AArch64FrameLowering.h - TargetFrameLowering for AArch64 --*- 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 | | // |
11 | | // |
12 | | //===----------------------------------------------------------------------===// |
13 | | |
14 | | #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H |
15 | | #define LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H |
16 | | |
17 | | #include "llvm/Target/TargetFrameLowering.h" |
18 | | |
19 | | namespace llvm { |
20 | | |
21 | | class AArch64FrameLowering : public TargetFrameLowering { |
22 | | public: |
23 | | explicit AArch64FrameLowering() |
24 | | : TargetFrameLowering(StackGrowsDown, 16, 0, 16, |
25 | 13.9k | true /*StackRealignable*/) {} |
26 | | |
27 | | void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB, |
28 | | MachineBasicBlock::iterator MBBI) const; |
29 | | |
30 | | MachineBasicBlock::iterator |
31 | | eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, |
32 | | MachineBasicBlock::iterator I) const override; |
33 | | |
34 | | /// emitProlog/emitEpilog - These methods insert prolog and epilog code into |
35 | | /// the function. |
36 | | void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
37 | | void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
38 | | |
39 | | bool canUseAsPrologue(const MachineBasicBlock &MBB) const override; |
40 | | |
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 | | 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 determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, |
63 | | RegScavenger *RS) const override; |
64 | | |
65 | | /// Returns true if the target will correctly handle shrink wrapping. |
66 | 456k | bool enableShrinkWrapping(const MachineFunction &MF) const override { |
67 | 456k | return true; |
68 | 456k | } |
69 | | |
70 | | bool enableStackSlotScavenging(const MachineFunction &MF) const override; |
71 | | |
72 | | private: |
73 | | bool shouldCombineCSRLocalStackBump(MachineFunction &MF, |
74 | | unsigned StackBumpBytes) const; |
75 | | }; |
76 | | |
77 | | } // End llvm namespace |
78 | | |
79 | | #endif |