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//===- X86RegisterBankInfo ---------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
/// \file
/// This file declares the targeting of the RegisterBankInfo class for X86.
/// \todo This should be generated by TableGen.
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_X86_X86REGISTERBANKINFO_H
#define LLVM_LIB_TARGET_X86_X86REGISTERBANKINFO_H
#include "llvm/CodeGen/GlobalISel/RegisterBankInfo.h"
#define GET_REGBANK_DECLARATIONS
#include "X86GenRegisterBank.inc"
namespace llvm {
class LLT;
class X86GenRegisterBankInfo : public RegisterBankInfo {
protected:
#define GET_TARGET_REGBANK_CLASS
#include "X86GenRegisterBank.inc"
#define GET_TARGET_REGBANK_INFO_CLASS
#include "X86GenRegisterBankInfo.def"
static RegisterBankInfo::PartialMapping PartMappings[];
static RegisterBankInfo::ValueMapping ValMappings[];
static PartialMappingIdx getPartialMappingIdx(const LLT &Ty, bool isFP);
static const RegisterBankInfo::ValueMapping *
getValueMapping(PartialMappingIdx Idx, unsigned NumOperands);
};
class TargetRegisterInfo;
/// This class provides the information for the target register banks.
class X86RegisterBankInfo final : public X86GenRegisterBankInfo {
private:
/// Get an instruction mapping.
/// \return An InstructionMappings with a statically allocated
/// OperandsMapping.
const InstructionMapping &getSameOperandsMapping(const MachineInstr &MI,
bool isFP) const;
/// Track the bank of each instruction operand(register)
static void
getInstrPartialMappingIdxs(const MachineInstr &MI,
const MachineRegisterInfo &MRI, const bool isFP,
SmallVectorImpl<PartialMappingIdx> &OpRegBankIdx);
/// Construct the instruction ValueMapping from PartialMappingIdxs
/// \return true if mapping succeeded.
static bool
getInstrValueMapping(const MachineInstr &MI,
const SmallVectorImpl<PartialMappingIdx> &OpRegBankIdx,
SmallVectorImpl<const ValueMapping *> &OpdsMapping);
public:
X86RegisterBankInfo(const TargetRegisterInfo &TRI);
const RegisterBank &getRegBankFromRegClass(const TargetRegisterClass &RC,
LLT) const override;
InstructionMappings
getInstrAlternativeMappings(const MachineInstr &MI) const override;
/// See RegisterBankInfo::applyMapping.
void applyMappingImpl(const OperandsMapper &OpdMapper) const override;
const InstructionMapping &
getInstrMapping(const MachineInstr &MI) const override;
};
} // namespace llvm
#endif
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