lib/Target/XCore/XCoreFrameLowering.h

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