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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
128 lines
5.4 KiB
C++
128 lines
5.4 KiB
C++
//===-- MipsSEInstrInfo.h - Mips32/64 Instruction Information ---*- 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 file contains the Mips32/64 implementation of the TargetInstrInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MIPSSEINSTRINFO_H
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#define LLVM_LIB_TARGET_MIPS_MIPSSEINSTRINFO_H
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#include "MipsInstrInfo.h"
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#include "MipsSERegisterInfo.h"
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namespace llvm {
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class MipsSEInstrInfo : public MipsInstrInfo {
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const MipsSERegisterInfo RI;
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public:
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explicit MipsSEInstrInfo(const MipsSubtarget &STI);
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const MipsRegisterInfo &getRegisterInfo() const override;
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/// isLoadFromStackSlot - If the specified machine instruction is a direct
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/// load from a stack slot, return the virtual or physical register number of
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/// the destination along with the FrameIndex of the loaded stack slot. If
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/// not, return 0. This predicate must return 0 if the instruction has
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/// any side effects other than loading from the stack slot.
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unsigned isLoadFromStackSlot(const MachineInstr &MI,
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int &FrameIndex) const override;
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/// isStoreToStackSlot - If the specified machine instruction is a direct
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/// store to a stack slot, return the virtual or physical register number of
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/// the source reg along with the FrameIndex of the loaded stack slot. If
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/// not, return 0. This predicate must return 0 if the instruction has
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/// any side effects other than storing to the stack slot.
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unsigned isStoreToStackSlot(const MachineInstr &MI,
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int &FrameIndex) const override;
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void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
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const DebugLoc &DL, unsigned DestReg, unsigned SrcReg,
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bool KillSrc) const override;
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void storeRegToStack(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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unsigned SrcReg, bool isKill, int FrameIndex,
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const TargetRegisterClass *RC,
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const TargetRegisterInfo *TRI,
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int64_t Offset) const override;
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void loadRegFromStack(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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unsigned DestReg, int FrameIndex,
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const TargetRegisterClass *RC,
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const TargetRegisterInfo *TRI,
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int64_t Offset) const override;
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bool expandPostRAPseudo(MachineInstr &MI) const override;
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unsigned getOppositeBranchOpc(unsigned Opc) const override;
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/// Adjust SP by Amount bytes.
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void adjustStackPtr(unsigned SP, int64_t Amount, MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const override;
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/// Emit a series of instructions to load an immediate. If NewImm is a
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/// non-NULL parameter, the last instruction is not emitted, but instead
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/// its immediate operand is returned in NewImm.
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unsigned loadImmediate(int64_t Imm, MachineBasicBlock &MBB,
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MachineBasicBlock::iterator II, const DebugLoc &DL,
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unsigned *NewImm) const;
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protected:
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/// If the specific machine instruction is a instruction that moves/copies
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/// value from one register to another register return true along with
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/// @Source machine operand and @Destination machine operand.
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bool isCopyInstrImpl(const MachineInstr &MI, const MachineOperand *&Source,
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const MachineOperand *&Destination) const override;
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private:
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unsigned getAnalyzableBrOpc(unsigned Opc) const override;
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void expandRetRA(MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const;
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void expandERet(MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const;
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std::pair<bool, bool> compareOpndSize(unsigned Opc,
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const MachineFunction &MF) const;
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void expandPseudoMFHiLo(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
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unsigned NewOpc) const;
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void expandPseudoMTLoHi(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
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unsigned LoOpc, unsigned HiOpc,
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bool HasExplicitDef) const;
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/// Expand pseudo Int-to-FP conversion instructions.
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///
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/// For example, the following pseudo instruction
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/// PseudoCVT_D32_W D2, A5
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/// gets expanded into these two instructions:
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/// MTC1 F4, A5
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/// CVT_D32_W D2, F4
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///
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/// We do this expansion post-RA to avoid inserting a floating point copy
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/// instruction between MTC1 and CVT_D32_W.
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void expandCvtFPInt(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
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unsigned CvtOpc, unsigned MovOpc, bool IsI64) const;
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void expandExtractElementF64(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I, bool isMicroMips,
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bool FP64) const;
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void expandBuildPairF64(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I, bool isMicroMips,
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bool FP64) const;
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void expandEhReturn(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const;
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};
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}
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#endif
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