| //===-- SparcFrameLowering.h - Define frame lowering for Sparc --*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_SPARC_SPARCFRAMELOWERING_H |
| #define LLVM_LIB_TARGET_SPARC_SPARCFRAMELOWERING_H |
| |
| #include "Sparc.h" |
| #include "llvm/CodeGen/TargetFrameLowering.h" |
| #include "llvm/Support/TypeSize.h" |
| |
| namespace llvm { |
| |
| class SparcSubtarget; |
| class SparcFrameLowering : public TargetFrameLowering { |
| public: |
| explicit SparcFrameLowering(const SparcSubtarget &ST); |
| |
| /// emitProlog/emitEpilog - These methods insert prolog and epilog code into |
| /// the function. |
| void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
| void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
| |
| MachineBasicBlock::iterator |
| eliminateCallFramePseudoInstr(MachineFunction &MF, |
| MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator I) const override; |
| |
| bool hasReservedCallFrame(const MachineFunction &MF) const override; |
| bool hasFP(const MachineFunction &MF) const override; |
| void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, |
| RegScavenger *RS = nullptr) const override; |
| |
| StackOffset getFrameIndexReference(const MachineFunction &MF, int FI, |
| Register &FrameReg) const override; |
| |
| /// targetHandlesStackFrameRounding - Returns true if the target is |
| /// responsible for rounding up the stack frame (probably at emitPrologue |
| /// time). |
| bool targetHandlesStackFrameRounding() const override { return true; } |
| |
| private: |
| // Remap input registers to output registers for leaf procedure. |
| void remapRegsForLeafProc(MachineFunction &MF) const; |
| |
| // Returns true if MF is a leaf procedure. |
| bool isLeafProc(MachineFunction &MF) const; |
| |
| |
| // Emits code for adjusting SP in function prologue/epilogue. |
| void emitSPAdjustment(MachineFunction &MF, |
| MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MBBI, |
| int NumBytes, unsigned ADDrr, unsigned ADDri) const; |
| |
| }; |
| |
| } // End llvm namespace |
| |
| #endif |