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 LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H
  16 #define LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_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 override;
  31     void emitEpilogue(MachineFunction &MF,
  32                       MachineBasicBlock &MBB) const override;
  33
  34     bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
  35                                   MachineBasicBlock::iterator MI,
  36                                   const std::vector<CalleeSavedInfo> &CSI,
  37                                   const TargetRegisterInfo *TRI) const override;
  38     bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
  39                                   MachineBasicBlock::iterator MI,
  40                                   const std::vector<CalleeSavedInfo> &CSI,
  41                                   const TargetRegisterInfo *TRI) const override;
  42
  43     void eliminateCallFramePseudoInstr(MachineFunction &MF,
  44                                   MachineBasicBlock &MBB,
  45                                   MachineBasicBlock::iterator I) const override;
  46
  47     bool hasFP(const MachineFunction &MF) const override;
  48
  49     void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
  50                                      RegScavenger *RS = nullptr) const override;
  51
  52     void processFunctionBeforeFrameFinalized(MachineFunction &MF,
  53                                      RegScavenger *RS = nullptr) const override;
  54
  55     //! Stack slot size (4 bytes)
  56     static int stackSlotSize() {
  57       return 4;
  58     }
  59   };
  60 }
  61
  62 #endif