| 1 | //===--- CodeGenHwModes.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 | // Classes to parse and store HW mode information for instruction selection. |
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| 9 | //===----------------------------------------------------------------------===// |
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| 10 | |
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| 11 | #ifndef LLVM_UTILS_TABLEGEN_CODEGENHWMODES_H |
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| 12 | #define LLVM_UTILS_TABLEGEN_CODEGENHWMODES_H |
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| 13 | |
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| 14 | #include "llvm/ADT/DenseMap.h" |
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| 15 | #include "llvm/ADT/StringRef.h" |
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| 16 | #include <cassert> |
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| 17 | #include <map> |
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| 18 | #include <string> |
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| 19 | #include <utility> |
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| 20 | #include <vector> |
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| 21 | |
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| 22 | // HwModeId -> list of predicates (definition) |
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| 23 | |
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| 24 | namespace llvm { |
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| 25 | class Record; |
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| 26 | class RecordKeeper; |
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| 27 | |
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| 28 | struct CodeGenHwModes; |
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| 29 | |
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| 30 | struct HwMode { |
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| 31 | HwMode(Record *R); |
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| 32 | StringRef Name; |
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| 33 | std::string Features; |
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| 34 | std::string Predicates; |
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| 35 | void dump() const; |
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| 36 | }; |
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| 37 | |
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| 38 | struct HwModeSelect { |
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| 39 | HwModeSelect(Record *R, CodeGenHwModes &CGH); |
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| 40 | typedef std::pair<unsigned, Record *> PairType; |
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| 41 | std::vector<PairType> Items; |
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| 42 | void dump() const; |
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| 43 | }; |
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| 44 | |
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| 45 | struct CodeGenHwModes { |
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| 46 | enum : unsigned { DefaultMode = 0 }; |
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| 47 | static StringRef DefaultModeName; |
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| 48 | |
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| 49 | CodeGenHwModes(RecordKeeper &R); |
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| 50 | unsigned getHwModeId(Record *R) const; |
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| 51 | const HwMode &getMode(unsigned Id) const { |
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| 52 | assert(Id != 0 && "Mode id of 0 is reserved for the default mode" ); |
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| 53 | return Modes[Id - 1]; |
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| 54 | } |
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| 55 | StringRef getModeName(unsigned Id, bool IncludeDefault = false) const { |
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| 56 | if (IncludeDefault && Id == CodeGenHwModes::DefaultMode) |
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| 57 | return DefaultModeName; |
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| 58 | return getMode(Id).Name; |
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| 59 | } |
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| 60 | const HwModeSelect &getHwModeSelect(Record *R) const; |
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| 61 | const std::map<Record *, HwModeSelect> &getHwModeSelects() const { |
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| 62 | return ModeSelects; |
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| 63 | } |
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| 64 | unsigned getNumModeIds() const { return Modes.size() + 1; } |
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| 65 | void dump() const; |
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| 66 | |
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| 67 | private: |
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| 68 | RecordKeeper &Records; |
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| 69 | DenseMap<Record *, unsigned> ModeIds; // HwMode Record -> HwModeId |
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| 70 | std::vector<HwMode> Modes; |
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| 71 | std::map<Record *, HwModeSelect> ModeSelects; |
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| 72 | }; |
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| 73 | } // namespace llvm |
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| 74 | |
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| 75 | #endif // LLVM_UTILS_TABLEGEN_CODEGENHWMODES_H |
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| 76 | |
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