lib/Target/Mips/MipsFrameLowering.h

   1 //==--- MipsFrameLowering.h - Define frame lowering for Mips --*- 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 //
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef MIPS_FRAMEINFO_H
  15 #define MIPS_FRAMEINFO_H
  16
  17 #include "Mips.h"
  18 #include "MipsSubtarget.h"
  19 #include "llvm/Target/TargetFrameLowering.h"
  20
  21 namespace llvm {
  22   class MipsSubtarget;
  23
  24 class MipsFrameLowering : public TargetFrameLowering {
  25 protected:
  26   const MipsSubtarget &STI;
  27
  28 public:
  29   explicit MipsFrameLowering(const MipsSubtarget &sti)
  30     : TargetFrameLowering(StackGrowsDown, 8, 0), STI(sti) {
  31   }
  32
  33   bool targetHandlesStackFrameRounding() const;
  34
  35   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
  36   /// the function.
  37   void emitPrologue(MachineFunction &MF) const;
  38   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  39
  40   bool hasFP(const MachineFunction &MF) const;
  41
  42   void getInitialFrameState(std::vector<MachineMove> &Moves) const;
  43
  44   void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
  45                                             RegScavenger *RS) const;
  46 };
  47
  48 } // End llvm namespace
  49
  50 #endif