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//===-- SnippetRepetitor.h --------------------------------------*- 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
/// Defines helpers to fill functions with repetitions of a snippet.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_EXEGESIS_FUNCTIONFILLER_H
#define LLVM_TOOLS_LLVM_EXEGESIS_FUNCTIONFILLER_H
#include "Assembler.h"
#include "BenchmarkResult.h"
#include "LlvmState.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/Object/Binary.h"
namespace llvm {
namespace exegesis {
class SnippetRepetitor {
public:
static std::unique_ptr<const SnippetRepetitor>
Create(InstructionBenchmark::RepetitionModeE Mode, const LLVMState &State);
virtual ~SnippetRepetitor();
// Returns the set of registers that are reserved by the repetitor.
virtual BitVector getReservedRegs() const = 0;
// Returns a functor that repeats `Instructions` so that the function executes
// at least `MinInstructions` instructions.
virtual FillFunction Repeat(ArrayRef<MCInst> Instructions,
unsigned MinInstructions,
unsigned LoopBodySize) const = 0;
explicit SnippetRepetitor(const LLVMState &State) : State(State) {}
protected:
const LLVMState &State;
};
} // namespace exegesis
} // namespace llvm
#endif
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