1 //===-- SparcFrameLowering.h - Define frame lowering for Sparc --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 //===----------------------------------------------------------------------===//
14 #ifndef SPARC_FRAMEINFO_H
15 #define SPARC_FRAMEINFO_H
18 #include "SparcSubtarget.h"
19 #include "llvm/Target/TargetFrameLowering.h"
24 class SparcFrameLowering : public TargetFrameLowering {
25 const SparcSubtarget &SubTarget;
27 explicit SparcFrameLowering(const SparcSubtarget &ST)
28 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown,
29 ST.is64Bit() ? 16 : 8, 0, ST.is64Bit() ? 16 : 8),
32 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
34 void emitPrologue(MachineFunction &MF) const override;
35 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
38 eliminateCallFramePseudoInstr(MachineFunction &MF,
39 MachineBasicBlock &MBB,
40 MachineBasicBlock::iterator I) const override;
42 bool hasReservedCallFrame(const MachineFunction &MF) const override;
43 bool hasFP(const MachineFunction &MF) const override;
44 void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
45 RegScavenger *RS = nullptr) const override;
48 // Remap input registers to output registers for leaf procedure.
49 void remapRegsForLeafProc(MachineFunction &MF) const;
51 // Returns true if MF is a leaf procedure.
52 bool isLeafProc(MachineFunction &MF) const;
55 // Emits code for adjusting SP in function prologue/epilogue.
56 void emitSPAdjustment(MachineFunction &MF,
57 MachineBasicBlock &MBB,
58 MachineBasicBlock::iterator MBBI,
59 int NumBytes, unsigned ADDrr, unsigned ADDri) const;
63 } // End llvm namespace