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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_GLOBALISEL_COMBINER_H
#define RCC_CODEGEN_GLOBALISEL_COMBINER_H
#include "rcc/CodeGen/GlobalISel/GIMatchTableExecutor.h"
#include "rcc/CodeGen/MachinePassManager.h"
#include <cstddef>
#include <string>
#include <utility>
namespace rcc {
class GlobalISelCombinerPass final : public MachineFunctionPass {
public:
GlobalISelCombinerPass(const GIMatchTable &Table, const GIMatchTableExecutor &Executor,
std::string PassName, std::size_t MaximumRewrites = 4096,
std::size_t MaximumIterations = 8) noexcept
: Table(&Table), Executor(&Executor), PassName(std::move(PassName)),
MaximumRewrites(MaximumRewrites), MaximumIterations(MaximumIterations) {
Contract.Name = this->PassName;
Contract.Requires = {MachineFunctionProperty::IsSSA};
Contract.VerificationStage = PipelineStage::MachineIRInput;
Contract.ThreadSafety = PassThreadSafety::ThreadSafe;
Contract.DeclaredChanges = {MachinePassChange::Instructions, MachinePassChange::Operands,
MachinePassChange::Registers};
}
[[nodiscard]] const MachinePassContract &contract() const noexcept override;
[[nodiscard]] Expected<MachinePassResult> run(MachineFunction &Function,
const TargetDescription &Target,
MachineFunctionAnalysisManager &Analyses) override;
private:
[[nodiscard]] Expected<MachinePassResult> runImplementation(MachineFunction &Function,
const TargetDescription &Target,
MachineFunctionAnalysisManager
&Analyses) const;
const GIMatchTable *Table;
const GIMatchTableExecutor *Executor;
std::string PassName;
std::size_t MaximumRewrites;
std::size_t MaximumIterations;
MachinePassContract Contract;
};
} // namespace rcc
#endif // RCC_CODEGEN_GLOBALISEL_COMBINER_H
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