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1 //===----------------------- CodeRegionGenerator.h --------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8 /// \file
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9 ///
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10 /// This file declares classes responsible for generating llvm-mca
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11 /// CodeRegions from various types of input. llvm-mca only analyzes CodeRegions,
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12 /// so the classes here provide the input-to-CodeRegions translation.
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13 //
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14 //===----------------------------------------------------------------------===//
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15
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16 #ifndef LLVM_TOOLS_LLVM_MCA_CODEREGION_GENERATOR_H
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17 #define LLVM_TOOLS_LLVM_MCA_CODEREGION_GENERATOR_H
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18
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19 #include "CodeRegion.h"
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20 #include "llvm/MC/MCAsmInfo.h"
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21 #include "llvm/MC/MCContext.h"
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22 #include "llvm/MC/MCSubtargetInfo.h"
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23 #include "llvm/Support/Error.h"
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24 #include "llvm/Support/SourceMgr.h"
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25 #include "llvm/Support/TargetRegistry.h"
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26 #include <memory>
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27
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28 namespace llvm {
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29 namespace mca {
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30
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31 /// This class is responsible for parsing the input given to the llvm-mca
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32 /// driver, and converting that into a CodeRegions instance.
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33 class CodeRegionGenerator {
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34 protected:
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35 CodeRegions Regions;
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36 CodeRegionGenerator(const CodeRegionGenerator &) = delete;
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37 CodeRegionGenerator &operator=(const CodeRegionGenerator &) = delete;
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38
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39 public:
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40 CodeRegionGenerator(SourceMgr &SM) : Regions(SM) {}
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41 virtual ~CodeRegionGenerator();
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42 virtual Expected<const CodeRegions &> parseCodeRegions() = 0;
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43 };
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44
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45 /// This class is responsible for parsing input ASM and generating
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46 /// a CodeRegions instance.
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47 class AsmCodeRegionGenerator final : public CodeRegionGenerator {
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48 const Target &TheTarget;
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49 MCContext &Ctx;
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50 const MCAsmInfo &MAI;
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51 const MCSubtargetInfo &STI;
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52 const MCInstrInfo &MCII;
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53 unsigned AssemblerDialect; // This is set during parsing.
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54
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55 public:
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56 AsmCodeRegionGenerator(const Target &T, SourceMgr &SM, MCContext &C,
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57 const MCAsmInfo &A, const MCSubtargetInfo &S,
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58 const MCInstrInfo &I)
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59 : CodeRegionGenerator(SM), TheTarget(T), Ctx(C), MAI(A), STI(S), MCII(I),
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60 AssemblerDialect(0) {}
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61
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62 unsigned getAssemblerDialect() const { return AssemblerDialect; }
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63 Expected<const CodeRegions &> parseCodeRegions() override;
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64 };
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65
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66 } // namespace mca
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67 } // namespace llvm
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68
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69 #endif // LLVM_TOOLS_LLVM_MCA_CODEREGION_GENERATOR_H
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