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8109fb5dfe
Summary: This is patch is part of a series to introduce an Alignment type. See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html See this patch for the introduction of the type: https://reviews.llvm.org/D64790 Reviewers: courbet Subscribers: jholewinski, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, sbc100, jgravelle-google, hiraditya, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, jsji, Jim, lenary, s.egerton, pzheng, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68993 llvm-svn: 375084
78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
//===- ARCFrameLowering.h - Define frame lowering for ARC -------*- 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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//
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// This class implements the ARC specific frame lowering.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H
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#define LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H
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#include "ARC.h"
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#include "llvm/CodeGen/MachineBasicBlock.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/TargetFrameLowering.h"
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namespace llvm {
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class MachineFunction;
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class ARCSubtarget;
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class ARCInstrInfo;
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class ARCFrameLowering : public TargetFrameLowering {
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public:
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ARCFrameLowering(const ARCSubtarget &st)
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: TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(4), 0),
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ST(st) {}
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/// Insert Prologue into the function.
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void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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/// Insert Epilogue into the function.
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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/// Add explicit callee save registers.
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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 MI,
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const std::vector<CalleeSavedInfo> &CSI,
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const TargetRegisterInfo *TRI) const override;
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bool
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restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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std::vector<CalleeSavedInfo> &CSI,
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const TargetRegisterInfo *TRI) const override;
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void processFunctionBeforeFrameFinalized(MachineFunction &MF,
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RegScavenger *RS) const override;
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bool hasFP(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 I) const override;
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bool assignCalleeSavedSpillSlots(
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llvm::MachineFunction &, const llvm::TargetRegisterInfo *,
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std::vector<llvm::CalleeSavedInfo> &) const override;
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private:
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void adjustStackToMatchRecords(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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bool allocate) const;
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const ARCSubtarget &ST;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H
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