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: 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 bool hasBP(const MachineFunction &MF) const; 36 37 bool isFPCloseToIncomingSP() const override { return false; } 38 39 MachineBasicBlock::iterator 40 eliminateCallFramePseudoInstr(MachineFunction &MF, 41 MachineBasicBlock &MBB, 42 MachineBasicBlock::iterator I) const override; 43 44 protected: 45 uint64_t estimateStackSize(const MachineFunction &MF) const; 46 }; 47 48 /// Create MipsFrameLowering objects. 49 const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST); 50 const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST); 51 52 } // End llvm namespace 53 54 #endif 55
