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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_GLOBALISEL_LEGALIZERHELPER_H
#define RCC_CODEGEN_GLOBALISEL_LEGALIZERHELPER_H
#include "rcc/CodeGen/GenericOpcodes.h"
#include "rcc/CodeGen/GlobalISel/LegalizerInfo.h"
#include "rcc/CodeGen/MachineIRBuilder.h"
#include "rcc/Support/Error.h"
namespace rcc {
class MachineFunction;
class MachineInstr;
class GISelChangeObserver;
class LegalizerHelper final {
public:
MachineIRBuilder &MIRBuilder;
GISelChangeObserver &Observer;
LegalizerHelper(MachineFunction &Function, const LegalizerInfo &Info,
GISelChangeObserver &Observer, MachineIRBuilder &MIRBuilder);
[[nodiscard]] Expected<void> legalize(MachineInstr &Instruction,
const LegalizationDecision &Decision);
[[nodiscard]] Expected<void> lower(MachineInstr &Instruction,
const LegalizationDecision &Decision);
[[nodiscard]] Expected<void> lowerVAArg(MachineInstr &Instruction);
[[nodiscard]] Expected<void> widenScalar(MachineInstr &Instruction, std::size_t TypeIndex,
LowLevelType WideType);
[[nodiscard]] Expected<void> widenScalarSrc(MachineInstr &Instruction, LowLevelType WideType,
std::size_t OperandIndex,
GenericOpcode ExtensionOpcode);
[[nodiscard]] Expected<void> widenScalarDst(MachineInstr &Instruction, LowLevelType WideType,
std::size_t OperandIndex = 0,
GenericOpcode TruncOpcode = GenericOpcode::G_TRUNC);
private:
MachineFunction &Function;
MachineRegisterInfo &MRI;
const LegalizerInfo &Info;
};
} // namespace rcc
#endif // RCC_CODEGEN_GLOBALISEL_LEGALIZERHELPER_H
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