Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/lib/Target/SystemZ/SystemZFrameLowering.h
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//===-- SystemZFrameLowering.h - Frame lowering for SystemZ -----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
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#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
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#include "llvm/ADT/IndexedMap.h"
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#include "llvm/CodeGen/TargetFrameLowering.h"
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namespace llvm {
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class SystemZTargetMachine;
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class SystemZSubtarget;
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class SystemZFrameLowering : public TargetFrameLowering {
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  IndexedMap<unsigned> RegSpillOffsets;
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public:
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  SystemZFrameLowering();
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  // Override TargetFrameLowering.
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  bool isFPCloseToIncomingSP() const override { return false; }
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  const SpillSlot *getCalleeSavedSpillSlots(unsigned &NumEntries) const
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    override;
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  void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
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                            RegScavenger *RS) const override;
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  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
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                                 MachineBasicBlock::iterator MBBI,
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                                 const std::vector<CalleeSavedInfo> &CSI,
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                                 const TargetRegisterInfo *TRI) const override;
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  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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                                   MachineBasicBlock::iterator MBBII,
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                                   std::vector<CalleeSavedInfo> &CSI,
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                                   const TargetRegisterInfo *TRI) const
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    override;
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  void processFunctionBeforeFrameFinalized(MachineFunction &MF,
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                                           RegScavenger *RS) const override;
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  void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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  bool hasFP(const MachineFunction &MF) const override;
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  bool hasReservedCallFrame(const MachineFunction &MF) const override;
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  MachineBasicBlock::iterator
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  eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
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                                MachineBasicBlock::iterator MI) const override;
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  // Return the byte offset from the incoming stack pointer of Reg's
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  // ABI-defined save slot.  Return 0 if no slot is defined for Reg.
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  unsigned getRegSpillOffset(unsigned Reg) const {
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    return RegSpillOffsets[Reg];
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  }
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};
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} // end namespace llvm
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#endif