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