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comparison lib/TableGen/TGParser.h @ 148:63bd29f05246

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merged
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 14 Aug 2019 19:46:37 +0900
parents c2174574ed3a
children
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146:3fc4d5c3e21e 148:63bd29f05246
1 //===- TGParser.h - Parser for TableGen Files -------------------*- C++ -*-===// 1 //===- TGParser.h - Parser for TableGen Files -------------------*- C++ -*-===//
2 // 2 //
3 // The LLVM Compiler Infrastructure 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // 4 // See https://llvm.org/LICENSE.txt for license information.
5 // This file is distributed under the University of Illinois Open Source 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 // License. See LICENSE.TXT for details.
7 // 6 //
8 //===----------------------------------------------------------------------===// 7 //===----------------------------------------------------------------------===//
9 // 8 //
10 // This class represents the Parser for tablegen files. 9 // This class represents the Parser for tablegen files.
11 // 10 //
25 class Record; 24 class Record;
26 class RecordVal; 25 class RecordVal;
27 class RecordKeeper; 26 class RecordKeeper;
28 class RecTy; 27 class RecTy;
29 class Init; 28 class Init;
29 struct ForeachLoop;
30 struct MultiClass; 30 struct MultiClass;
31 struct SubClassReference; 31 struct SubClassReference;
32 struct SubMultiClassReference; 32 struct SubMultiClassReference;
33 33
34 struct LetRecord { 34 struct LetRecord {
39 LetRecord(StringInit *N, ArrayRef<unsigned> B, Init *V, SMLoc L) 39 LetRecord(StringInit *N, ArrayRef<unsigned> B, Init *V, SMLoc L)
40 : Name(N), Bits(B), Value(V), Loc(L) { 40 : Name(N), Bits(B), Value(V), Loc(L) {
41 } 41 }
42 }; 42 };
43 43
44 /// RecordsEntry - Can be either a record or a foreach loop.
45 struct RecordsEntry {
46 std::unique_ptr<Record> Rec;
47 std::unique_ptr<ForeachLoop> Loop;
48
49 void dump() const;
50
51 RecordsEntry() {}
52 RecordsEntry(std::unique_ptr<Record> Rec) : Rec(std::move(Rec)) {}
53 RecordsEntry(std::unique_ptr<ForeachLoop> Loop)
54 : Loop(std::move(Loop)) {}
55 };
56
44 /// ForeachLoop - Record the iteration state associated with a for loop. 57 /// ForeachLoop - Record the iteration state associated with a for loop.
45 /// This is used to instantiate items in the loop body. 58 /// This is used to instantiate items in the loop body.
46 struct ForeachLoop { 59 struct ForeachLoop {
60 SMLoc Loc;
47 VarInit *IterVar; 61 VarInit *IterVar;
48 ListInit *ListValue; 62 Init *ListValue;
49 63 std::vector<RecordsEntry> Entries;
50 ForeachLoop(VarInit *IVar, ListInit *LValue) 64
51 : IterVar(IVar), ListValue(LValue) {} 65 void dump() const;
52 }; 66
67 ForeachLoop(SMLoc Loc, VarInit *IVar, Init *LValue)
68 : Loc(Loc), IterVar(IVar), ListValue(LValue) {}
69 };
70
71 struct DefsetRecord {
72 SMLoc Loc;
73 RecTy *EltTy;
74 SmallVector<Init *, 16> Elements;
75 };
76
77 struct MultiClass {
78 Record Rec; // Placeholder for template args and Name.
79 std::vector<RecordsEntry> Entries;
80
81 void dump() const;
82
83 MultiClass(StringRef Name, SMLoc Loc, RecordKeeper &Records) :
84 Rec(Name, Loc, Records) {}
85 };
53 86
54 class TGParser { 87 class TGParser {
55 TGLexer Lex; 88 TGLexer Lex;
56 std::vector<SmallVector<LetRecord, 4>> LetStack; 89 std::vector<SmallVector<LetRecord, 4>> LetStack;
57 std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses; 90 std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses;
58 91
59 /// Loops - Keep track of any foreach loops we are within. 92 /// Loops - Keep track of any foreach loops we are within.
60 /// 93 ///
61 typedef std::vector<ForeachLoop> LoopVector; 94 std::vector<std::unique_ptr<ForeachLoop>> Loops;
62 LoopVector Loops; 95
96 SmallVector<DefsetRecord *, 2> Defsets;
63 97
64 /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the 98 /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the
65 /// current value. 99 /// current value.
66 MultiClass *CurMultiClass; 100 MultiClass *CurMultiClass;
67 101
68 // Record tracker 102 // Record tracker
69 RecordKeeper &Records; 103 RecordKeeper &Records;
70
71 unsigned AnonCounter;
72 104
73 // A "named boolean" indicating how to parse identifiers. Usually 105 // A "named boolean" indicating how to parse identifiers. Usually
74 // identifiers map to some existing object but in special cases 106 // identifiers map to some existing object but in special cases
75 // (e.g. parsing def names) no such object exists yet because we are 107 // (e.g. parsing def names) no such object exists yet because we are
76 // in the middle of creating in. For those situations, allow the 108 // in the middle of creating in. For those situations, allow the
77 // parser to ignore missing object errors. 109 // parser to ignore missing object errors.
78 enum IDParseMode { 110 enum IDParseMode {
79 ParseValueMode, // We are parsing a value we expect to look up. 111 ParseValueMode, // We are parsing a value we expect to look up.
80 ParseNameMode, // We are parsing a name of an object that does not yet 112 ParseNameMode, // We are parsing a name of an object that does not yet
81 // exist. 113 // exist.
82 ParseForeachMode // We are parsing a foreach init.
83 }; 114 };
84 115
85 public: 116 public:
86 TGParser(SourceMgr &SrcMgr, RecordKeeper &records) 117 TGParser(SourceMgr &SrcMgr, ArrayRef<std::string> Macros,
87 : Lex(SrcMgr), CurMultiClass(nullptr), Records(records), AnonCounter(0) {} 118 RecordKeeper &records)
119 : Lex(SrcMgr, Macros), CurMultiClass(nullptr), Records(records) {}
88 120
89 /// ParseFile - Main entrypoint for parsing a tblgen file. These parser 121 /// ParseFile - Main entrypoint for parsing a tblgen file. These parser
90 /// routines return true on error, or false on success. 122 /// routines return true on error, or false on success.
91 bool ParseFile(); 123 bool ParseFile();
92 124
105 bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV); 137 bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV);
106 bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName, 138 bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName,
107 ArrayRef<unsigned> BitList, Init *V, 139 ArrayRef<unsigned> BitList, Init *V,
108 bool AllowSelfAssignment = false); 140 bool AllowSelfAssignment = false);
109 bool AddSubClass(Record *Rec, SubClassReference &SubClass); 141 bool AddSubClass(Record *Rec, SubClassReference &SubClass);
142 bool AddSubClass(RecordsEntry &Entry, SubClassReference &SubClass);
110 bool AddSubMultiClass(MultiClass *CurMC, 143 bool AddSubMultiClass(MultiClass *CurMC,
111 SubMultiClassReference &SubMultiClass); 144 SubMultiClassReference &SubMultiClass);
112 145
113 Init *GetNewAnonymousName(); 146 using SubstStack = SmallVector<std::pair<Init *, Init *>, 8>;
114 147
115 // IterRecord: Map an iterator name to a value. 148 bool addEntry(RecordsEntry E);
116 struct IterRecord { 149 bool resolve(const ForeachLoop &Loop, SubstStack &Stack, bool Final,
117 VarInit *IterVar; 150 std::vector<RecordsEntry> *Dest, SMLoc *Loc = nullptr);
118 Init *IterValue; 151 bool resolve(const std::vector<RecordsEntry> &Source, SubstStack &Substs,
119 IterRecord(VarInit *Var, Init *Val) : IterVar(Var), IterValue(Val) {} 152 bool Final, std::vector<RecordsEntry> *Dest,
120 }; 153 SMLoc *Loc = nullptr);
121 154 bool addDefOne(std::unique_ptr<Record> Rec);
122 // IterSet: The set of all iterator values at some point in the
123 // iteration space.
124 typedef std::vector<IterRecord> IterSet;
125
126 bool ProcessForeachDefs(Record *CurRec, SMLoc Loc);
127 bool ProcessForeachDefs(Record *CurRec, SMLoc Loc, IterSet &IterVals);
128 155
129 private: // Parser methods. 156 private: // Parser methods.
130 bool ParseObjectList(MultiClass *MC = nullptr); 157 bool ParseObjectList(MultiClass *MC = nullptr);
131 bool ParseObject(MultiClass *MC); 158 bool ParseObject(MultiClass *MC);
132 bool ParseClass(); 159 bool ParseClass();
133 bool ParseMultiClass(); 160 bool ParseMultiClass();
134 Record *InstantiateMulticlassDef(MultiClass &MC, Record *DefProto,
135 Init *&DefmPrefix, SMRange DefmPrefixRange,
136 ArrayRef<Init *> TArgs,
137 ArrayRef<Init *> TemplateVals);
138 bool ResolveMulticlassDefArgs(MultiClass &MC, Record *DefProto,
139 SMLoc DefmPrefixLoc, SMLoc SubClassLoc,
140 ArrayRef<Init *> TArgs,
141 ArrayRef<Init *> TemplateVals, bool DeleteArgs);
142 bool ResolveMulticlassDef(MultiClass &MC,
143 Record *CurRec,
144 Record *DefProto,
145 SMLoc DefmPrefixLoc);
146 bool ParseDefm(MultiClass *CurMultiClass); 161 bool ParseDefm(MultiClass *CurMultiClass);
147 bool ParseDef(MultiClass *CurMultiClass); 162 bool ParseDef(MultiClass *CurMultiClass);
163 bool ParseDefset();
148 bool ParseForeach(MultiClass *CurMultiClass); 164 bool ParseForeach(MultiClass *CurMultiClass);
149 bool ParseTopLevelLet(MultiClass *CurMultiClass); 165 bool ParseTopLevelLet(MultiClass *CurMultiClass);
150 void ParseLetList(SmallVectorImpl<LetRecord> &Result); 166 void ParseLetList(SmallVectorImpl<LetRecord> &Result);
151 167
152 bool ParseObjectBody(Record *CurRec); 168 bool ParseObjectBody(Record *CurRec);
153 bool ParseBody(Record *CurRec); 169 bool ParseBody(Record *CurRec);
154 bool ParseBodyItem(Record *CurRec); 170 bool ParseBodyItem(Record *CurRec);
155 171
156 bool ParseTemplateArgList(Record *CurRec); 172 bool ParseTemplateArgList(Record *CurRec);
157 Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs); 173 Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs);
158 VarInit *ParseForeachDeclaration(ListInit *&ForeachListValue); 174 VarInit *ParseForeachDeclaration(Init *&ForeachListValue);
159 175
160 SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm); 176 SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm);
161 SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC); 177 SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC);
162 178
163 Init *ParseIDValue(Record *CurRec, StringInit *Name, SMLoc NameLoc, 179 Init *ParseIDValue(Record *CurRec, StringInit *Name, SMLoc NameLoc,
172 SmallVectorImpl<std::pair<llvm::Init*, StringInit*>> &Result, 188 SmallVectorImpl<std::pair<llvm::Init*, StringInit*>> &Result,
173 Record *CurRec); 189 Record *CurRec);
174 bool ParseOptionalRangeList(SmallVectorImpl<unsigned> &Ranges); 190 bool ParseOptionalRangeList(SmallVectorImpl<unsigned> &Ranges);
175 bool ParseOptionalBitList(SmallVectorImpl<unsigned> &Ranges); 191 bool ParseOptionalBitList(SmallVectorImpl<unsigned> &Ranges);
176 void ParseRangeList(SmallVectorImpl<unsigned> &Result); 192 void ParseRangeList(SmallVectorImpl<unsigned> &Result);
177 bool ParseRangePiece(SmallVectorImpl<unsigned> &Ranges); 193 bool ParseRangePiece(SmallVectorImpl<unsigned> &Ranges,
194 TypedInit *FirstItem = nullptr);
178 RecTy *ParseType(); 195 RecTy *ParseType();
179 Init *ParseOperation(Record *CurRec, RecTy *ItemType); 196 Init *ParseOperation(Record *CurRec, RecTy *ItemType);
197 Init *ParseOperationCond(Record *CurRec, RecTy *ItemType);
180 RecTy *ParseOperatorType(); 198 RecTy *ParseOperatorType();
181 Init *ParseObjectName(MultiClass *CurMultiClass); 199 Init *ParseObjectName(MultiClass *CurMultiClass);
182 Record *ParseClassID(); 200 Record *ParseClassID();
183 MultiClass *ParseMultiClassID(); 201 MultiClass *ParseMultiClassID();
184 bool ApplyLetStack(Record *CurRec); 202 bool ApplyLetStack(Record *CurRec);
203 bool ApplyLetStack(RecordsEntry &Entry);
185 }; 204 };
186 205
187 } // end namespace llvm 206 } // end namespace llvm
188 207
189 #endif 208 #endif