File: SnippetRepetitor.h

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (54 lines) | stat: -rw-r--r-- 1,707 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
//===-- 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