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:
MipsFrameLowering(const MipsSubtarget & sti)29   explicit MipsFrameLowering(const MipsSubtarget &sti)
30     : TargetFrameLowering(StackGrowsDown, sti.hasMips64() ? 16 : 8, 0),
31       STI(sti) {
32   }
33 
34   bool targetHandlesStackFrameRounding() const;
35 
36   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
37   /// the function.
38   void emitPrologue(MachineFunction &MF) const;
39   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
40 
41   bool hasFP(const MachineFunction &MF) const;
42 
43   void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
44                                             RegScavenger *RS) const;
45 };
46 
47 } // End llvm namespace
48 
49 #endif
50