1//===-- RISCVRegisterBankInfo.h ---------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9/// This file declares the targeting of the RegisterBankInfo class for RISC-V.
10/// \todo This should be generated by TableGen.
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_RISCV_RISCVREGISTERBANKINFO_H
14#define LLVM_LIB_TARGET_RISCV_RISCVREGISTERBANKINFO_H
15
16#include "llvm/CodeGen/RegisterBankInfo.h"
17
18#define GET_REGBANK_DECLARATIONS
19#include "RISCVGenRegisterBank.inc"
20
21namespace llvm {
22
23class TargetRegisterInfo;
24
25class RISCVGenRegisterBankInfo : public RegisterBankInfo {
26protected:
27#define GET_TARGET_REGBANK_CLASS
28#include "RISCVGenRegisterBank.inc"
29};
30
31/// This class provides the information for the target register banks.
32class RISCVRegisterBankInfo final : public RISCVGenRegisterBankInfo {
33public:
34 RISCVRegisterBankInfo(unsigned HwMode);
35
36 const InstructionMapping &
37 getInstrMapping(const MachineInstr &MI) const override;
38
39private:
40 /// \returns true if \p MI only uses and defines FPRs.
41 bool hasFPConstraints(const MachineInstr &MI, const MachineRegisterInfo &MRI,
42 const TargetRegisterInfo &TRI) const;
43
44 /// \returns true if \p MI only uses FPRs.
45 bool onlyUsesFP(const MachineInstr &MI, const MachineRegisterInfo &MRI,
46 const TargetRegisterInfo &TRI) const;
47
48 /// \returns true if any use of \p Def only user FPRs.
49 bool anyUseOnlyUseFP(Register Def, const MachineRegisterInfo &MRI,
50 const TargetRegisterInfo &TRI) const;
51
52 /// \returns true if \p MI only defines FPRs.
53 bool onlyDefinesFP(const MachineInstr &MI, const MachineRegisterInfo &MRI,
54 const TargetRegisterInfo &TRI) const;
55};
56} // end namespace llvm
57#endif
58