1 //===-- ARMTargetFrameInfo.h - Define TargetFrameInfo for ARM ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 //===----------------------------------------------------------------------===//
14 #ifndef ARM_FRAMEINFO_H
15 #define ARM_FRAMEINFO_H
18 #include "ARMSubtarget.h"
19 #include "llvm/Target/TargetFrameInfo.h"
24 class ARMFrameInfo : public TargetFrameInfo {
26 const ARMSubtarget &STI;
29 explicit ARMFrameInfo(const ARMSubtarget &sti)
30 : TargetFrameInfo(StackGrowsDown, sti.getStackAlignment(), 0, 4), STI(sti) {
33 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
35 void emitPrologue(MachineFunction &MF) const;
36 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
38 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
39 MachineBasicBlock::iterator MI,
40 const std::vector<CalleeSavedInfo> &CSI,
41 const TargetRegisterInfo *TRI) const;
43 bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
44 MachineBasicBlock::iterator MI,
45 const std::vector<CalleeSavedInfo> &CSI,
46 const TargetRegisterInfo *TRI) const;
48 bool hasFP(const MachineFunction &MF) const;
49 bool hasReservedCallFrame(const MachineFunction &MF) const;
50 bool canSimplifyCallFramePseudos(const MachineFunction &MF) const;
51 int getFrameIndexReference(const MachineFunction &MF, int FI,
52 unsigned &FrameReg) const;
53 int ResolveFrameIndexReference(const MachineFunction &MF, int FI,
54 unsigned &FrameReg, int SPAdj) const;
55 int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
57 void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
58 RegScavenger *RS) const;
61 void emitPopInst(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
62 const std::vector<CalleeSavedInfo> &CSI, unsigned Opc,
63 bool isVarArg, bool(*Func)(unsigned, bool)) const;
64 void emitPushInst(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
65 const std::vector<CalleeSavedInfo> &CSI, unsigned Opc,
66 bool(*Func)(unsigned, bool)) const;
69 } // End llvm namespace