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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_GLOBALISEL_GENERICMACHINEINSTRS_H
#define RCC_CODEGEN_GLOBALISEL_GENERICMACHINEINSTRS_H
#include "rcc/CodeGen/GenericOpcodes.h"
#include "rcc/CodeGen/MachineInstr.h"
#include "rcc/CodeGen/MachineOperand.h"
#include "rcc/CodeGen/Register.h"
#include <cassert>
#include <cstddef>
namespace rcc {
class GenericMachineInstr : public MachineInstr {
public:
GenericMachineInstr() = delete;
[[nodiscard]] Register getReg(std::size_t Index) const {
const MachineOperand *Operand = operandAt(Index);
assert(Operand != nullptr && Operand->isRegister());
const Register *Reg = Operand->getIf<Register>();
assert(Reg != nullptr);
return *Reg;
}
[[nodiscard]] static bool classof(const MachineInstr *Instruction) noexcept {
return Instruction != nullptr && isGenericOpcode(Instruction->opcode());
}
};
class GUnmerge : public GenericMachineInstr {
public:
[[nodiscard]] std::size_t getNumDefs() const noexcept {
return operandCount() - 1;
}
[[nodiscard]] Register getSourceReg() const {
return getReg(getNumDefs());
}
[[nodiscard]] static bool classof(const MachineInstr *Instruction) noexcept {
return Instruction != nullptr &&
Instruction->opcode() == rcc::opcode(GenericOpcode::G_UNMERGE_VALUES);
}
};
class GMergeLikeInstr : public GenericMachineInstr {
public:
[[nodiscard]] std::size_t getNumSources() const noexcept {
return operandCount() - 1;
}
[[nodiscard]] Register getSourceReg(std::size_t Index) const {
return getReg(Index + 1);
}
[[nodiscard]] static bool classof(const MachineInstr *Instruction) noexcept {
if (Instruction == nullptr)
return false;
switch (static_cast<GenericOpcode>(Instruction->opcode().value())) {
case GenericOpcode::G_MERGE_VALUES:
case GenericOpcode::G_CONCAT_VECTORS:
case GenericOpcode::G_BUILD_VECTOR:
return true;
default:
return false;
}
}
};
class GMerge : public GMergeLikeInstr {
public:
[[nodiscard]] static bool classof(const MachineInstr *Instruction) noexcept {
return Instruction != nullptr &&
Instruction->opcode() == rcc::opcode(GenericOpcode::G_MERGE_VALUES);
}
};
class GConcatVectors : public GMergeLikeInstr {
public:
[[nodiscard]] static bool classof(const MachineInstr *Instruction) noexcept {
return Instruction != nullptr &&
Instruction->opcode() == rcc::opcode(GenericOpcode::G_CONCAT_VECTORS);
}
};
class GBuildVector : public GMergeLikeInstr {
public:
[[nodiscard]] static bool classof(const MachineInstr *Instruction) noexcept {
return Instruction != nullptr &&
Instruction->opcode() == rcc::opcode(GenericOpcode::G_BUILD_VECTOR);
}
};
template <typename InstructionT>
[[nodiscard]] InstructionT &castGenericMachineInstr(MachineInstr &Instruction) {
assert(InstructionT::classof(&Instruction));
return static_cast<InstructionT &>(Instruction);
}
template <typename InstructionT>
[[nodiscard]] const InstructionT &castGenericMachineInstr(const MachineInstr &Instruction) {
assert(InstructionT::classof(&Instruction));
return static_cast<const InstructionT &>(Instruction);
}
} // namespace rcc
#endif // RCC_CODEGEN_GLOBALISEL_GENERICMACHINEINSTRS_H
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