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// SPDX-License-Identifier: GPL-3.0-or-later
#include "RISCV.h"
#include "rcc/CodeGen/GlobalISel/GIMatchTableExecutor.h"
#include "rcc/CodeGen/MachineFunction.h"
#include "rcc/CodeGen/MachineInstr.h"
#include "rcc/CodeGen/MachineRegisterInfo.h"
#include "rcc/CodeGen/TargetDescription.h"
#include <string>
namespace rcc::riscv {
namespace {
#define GET_GLOBALISEL_COMBINER_TABLE
#include "RISCVGenGlobalISelCombiner.inc"
#undef GET_GLOBALISEL_COMBINER_TABLE
class RISCVGISelCombinerExecutor final : public GIMatchTableExecutor {
protected:
[[nodiscard]] Expected<bool>
matchesTargetPredicate(std::string_view Name, const MachineInstr &Instruction,
const MachineFunction &Function,
const TargetDescription &Target) const override {
if (Name != "sext_cheaper_than_zext")
return GIMatchTableExecutor::matchesTargetPredicate(Name, Instruction, Function, Target);
const MachineOperand *Destination = Instruction.operandAt(0);
const MachineOperand *Source = Instruction.operandAt(1);
const Register *DestinationReg =
Destination == nullptr ? nullptr : Destination->getIf<Register>();
const Register *SourceReg = Source == nullptr ? nullptr : Source->getIf<Register>();
if (DestinationReg == nullptr || SourceReg == nullptr || !DestinationReg->isVirtual() ||
!SourceReg->isVirtual())
return false;
auto DestinationType = Function.registerInfo().getType(*DestinationReg);
auto SourceType = Function.registerInfo().getType(*SourceReg);
if (!DestinationType || !SourceType)
return false;
return DestinationType->isCategoryNeutralScalar() && SourceType->isCategoryNeutralScalar() &&
DestinationType->scalarBitWidth() == 64 && SourceType->scalarBitWidth() == 32;
}
};
} // namespace
const GIMatchTable &giselCombinerTable() noexcept {
static constexpr GIMatchTable Table = generatedGlobalISelCombinerMatchTable();
return Table;
}
const GIMatchTableExecutor &giselCombinerExecutor() noexcept {
static const RISCVGISelCombinerExecutor Executor;
return Executor;
}
} // namespace rcc::riscv
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