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   public:
  26     XCoreFrameLowering(const XCoreSubtarget &STI);
  27
  28     /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
  29     /// the function.
  30     void emitPrologue(MachineFunction &MF) const;
  31     void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  32
  33     bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
  34                                    MachineBasicBlock::iterator MI,
  35                                    const std::vector<CalleeSavedInfo> &CSI,
  36                                    const TargetRegisterInfo *TRI) const;
  37     bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
  38                                      MachineBasicBlock::iterator MI,
  39                                      const std::vector<CalleeSavedInfo> &CSI,
  40                                      const TargetRegisterInfo *TRI) const;
  41
  42     void eliminateCallFramePseudoInstr(MachineFunction &MF,
  43                                        MachineBasicBlock &MBB,
  44                                        MachineBasicBlock::iterator I) const;
  45
  46     bool hasFP(const MachineFunction &MF) const;
  47
  48     void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
  49                                               RegScavenger *RS = nullptr) const;
  50
  51     void processFunctionBeforeFrameFinalized(MachineFunction &MF,
  52                                              RegScavenger *RS = nullptr) const;
  53
  54     //! Stack slot size (4 bytes)
  55     static int stackSlotSize() {
  56       return 4;
  57     }
  58   };
  59 }
  60
  61 #endif // XCOREFRAMEINFO_H