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 LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
15 #define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
16 
17 #include "Mips.h"
18 #include "llvm/Target/TargetFrameLowering.h"
19 
20 namespace llvm {
21   class MipsSubtarget;
22 
23 class MipsFrameLowering : public TargetFrameLowering {
24 protected:
25   const MipsSubtarget &STI;
26 
27 public:
MipsFrameLowering(const MipsSubtarget & sti,unsigned Alignment)28   explicit MipsFrameLowering(const MipsSubtarget &sti, unsigned Alignment)
29     : TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) {}
30 
31   static const MipsFrameLowering *create(const MipsSubtarget &ST);
32 
33   bool hasFP(const MachineFunction &MF) const override;
34 
35   void
36   eliminateCallFramePseudoInstr(MachineFunction &MF,
37                                 MachineBasicBlock &MBB,
38                                 MachineBasicBlock::iterator I) const override;
39 
40 protected:
41   uint64_t estimateStackSize(const MachineFunction &MF) const;
42 };
43 
44 /// Create MipsFrameLowering objects.
45 const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST);
46 const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST);
47 
48 } // End llvm namespace
49 
50 #endif
51