1 //===--- ParseOpenMP.cpp - OpenMP directives parsing ----------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// \file 9 /// This file implements parsing of all OpenMP directives and clauses. 10 /// 11 //===----------------------------------------------------------------------===// 12 13 #include "clang/AST/ASTContext.h" 14 #include "clang/AST/OpenMPClause.h" 15 #include "clang/AST/StmtOpenMP.h" 16 #include "clang/Basic/OpenMPKinds.h" 17 #include "clang/Basic/TargetInfo.h" 18 #include "clang/Basic/TokenKinds.h" 19 #include "clang/Parse/ParseDiagnostic.h" 20 #include "clang/Parse/Parser.h" 21 #include "clang/Parse/RAIIObjectsForParser.h" 22 #include "clang/Sema/Scope.h" 23 #include "llvm/ADT/PointerIntPair.h" 24 #include "llvm/ADT/StringSwitch.h" 25 #include "llvm/ADT/UniqueVector.h" 26 #include "llvm/Frontend/OpenMP/OMPContext.h" 27 28 using namespace clang; 29 using namespace llvm::omp; 30 31 //===----------------------------------------------------------------------===// 32 // OpenMP declarative directives. 33 //===----------------------------------------------------------------------===// 34 35 namespace { 36 enum OpenMPDirectiveKindEx { 37 OMPD_cancellation = llvm::omp::Directive_enumSize + 1, 38 OMPD_data, 39 OMPD_declare, 40 OMPD_end, 41 OMPD_end_declare, 42 OMPD_enter, 43 OMPD_exit, 44 OMPD_point, 45 OMPD_reduction, 46 OMPD_target_enter, 47 OMPD_target_exit, 48 OMPD_update, 49 OMPD_distribute_parallel, 50 OMPD_teams_distribute_parallel, 51 OMPD_target_teams_distribute_parallel, 52 OMPD_mapper, 53 OMPD_variant, 54 OMPD_begin, 55 OMPD_begin_declare, 56 }; 57 58 // Helper to unify the enum class OpenMPDirectiveKind with its extension 59 // the OpenMPDirectiveKindEx enum which allows to use them together as if they 60 // are unsigned values. 61 struct OpenMPDirectiveKindExWrapper { 62 OpenMPDirectiveKindExWrapper(unsigned Value) : Value(Value) {} 63 OpenMPDirectiveKindExWrapper(OpenMPDirectiveKind DK) : Value(unsigned(DK)) {} 64 bool operator==(OpenMPDirectiveKindExWrapper V) const { 65 return Value == V.Value; 66 } 67 bool operator!=(OpenMPDirectiveKindExWrapper V) const { 68 return Value != V.Value; 69 } 70 bool operator==(OpenMPDirectiveKind V) const { return Value == unsigned(V); } 71 bool operator!=(OpenMPDirectiveKind V) const { return Value != unsigned(V); } 72 bool operator<(OpenMPDirectiveKind V) const { return Value < unsigned(V); } 73 operator unsigned() const { return Value; } 74 operator OpenMPDirectiveKind() const { return OpenMPDirectiveKind(Value); } 75 unsigned Value; 76 }; 77 78 class DeclDirectiveListParserHelper final { 79 SmallVector<Expr *, 4> Identifiers; 80 Parser *P; 81 OpenMPDirectiveKind Kind; 82 83 public: 84 DeclDirectiveListParserHelper(Parser *P, OpenMPDirectiveKind Kind) 85 : P(P), Kind(Kind) {} 86 void operator()(CXXScopeSpec &SS, DeclarationNameInfo NameInfo) { 87 ExprResult Res = P->getActions().ActOnOpenMPIdExpression( 88 P->getCurScope(), SS, NameInfo, Kind); 89 if (Res.isUsable()) 90 Identifiers.push_back(Res.get()); 91 } 92 llvm::ArrayRef<Expr *> getIdentifiers() const { return Identifiers; } 93 }; 94 } // namespace 95 96 // Map token string to extended OMP token kind that are 97 // OpenMPDirectiveKind + OpenMPDirectiveKindEx. 98 static unsigned getOpenMPDirectiveKindEx(StringRef S) { 99 OpenMPDirectiveKindExWrapper DKind = getOpenMPDirectiveKind(S); 100 if (DKind != OMPD_unknown) 101 return DKind; 102 103 return llvm::StringSwitch<OpenMPDirectiveKindExWrapper>(S) 104 .Case("cancellation", OMPD_cancellation) 105 .Case("data", OMPD_data) 106 .Case("declare", OMPD_declare) 107 .Case("end", OMPD_end) 108 .Case("enter", OMPD_enter) 109 .Case("exit", OMPD_exit) 110 .Case("point", OMPD_point) 111 .Case("reduction", OMPD_reduction) 112 .Case("update", OMPD_update) 113 .Case("mapper", OMPD_mapper) 114 .Case("variant", OMPD_variant) 115 .Case("begin", OMPD_begin) 116 .Default(OMPD_unknown); 117 } 118 119 static OpenMPDirectiveKindExWrapper parseOpenMPDirectiveKind(Parser &P) { 120 // Array of foldings: F[i][0] F[i][1] ===> F[i][2]. 121 // E.g.: OMPD_for OMPD_simd ===> OMPD_for_simd 122 // TODO: add other combined directives in topological order. 123 static const OpenMPDirectiveKindExWrapper F[][3] = { 124 {OMPD_begin, OMPD_declare, OMPD_begin_declare}, 125 {OMPD_begin, OMPD_assumes, OMPD_begin_assumes}, 126 {OMPD_end, OMPD_declare, OMPD_end_declare}, 127 {OMPD_end, OMPD_assumes, OMPD_end_assumes}, 128 {OMPD_cancellation, OMPD_point, OMPD_cancellation_point}, 129 {OMPD_declare, OMPD_reduction, OMPD_declare_reduction}, 130 {OMPD_declare, OMPD_mapper, OMPD_declare_mapper}, 131 {OMPD_declare, OMPD_simd, OMPD_declare_simd}, 132 {OMPD_declare, OMPD_target, OMPD_declare_target}, 133 {OMPD_declare, OMPD_variant, OMPD_declare_variant}, 134 {OMPD_begin_declare, OMPD_variant, OMPD_begin_declare_variant}, 135 {OMPD_end_declare, OMPD_variant, OMPD_end_declare_variant}, 136 {OMPD_distribute, OMPD_parallel, OMPD_distribute_parallel}, 137 {OMPD_distribute_parallel, OMPD_for, OMPD_distribute_parallel_for}, 138 {OMPD_distribute_parallel_for, OMPD_simd, 139 OMPD_distribute_parallel_for_simd}, 140 {OMPD_distribute, OMPD_simd, OMPD_distribute_simd}, 141 {OMPD_end_declare, OMPD_target, OMPD_end_declare_target}, 142 {OMPD_target, OMPD_data, OMPD_target_data}, 143 {OMPD_target, OMPD_enter, OMPD_target_enter}, 144 {OMPD_target, OMPD_exit, OMPD_target_exit}, 145 {OMPD_target, OMPD_update, OMPD_target_update}, 146 {OMPD_target_enter, OMPD_data, OMPD_target_enter_data}, 147 {OMPD_target_exit, OMPD_data, OMPD_target_exit_data}, 148 {OMPD_for, OMPD_simd, OMPD_for_simd}, 149 {OMPD_parallel, OMPD_for, OMPD_parallel_for}, 150 {OMPD_parallel_for, OMPD_simd, OMPD_parallel_for_simd}, 151 {OMPD_parallel, OMPD_sections, OMPD_parallel_sections}, 152 {OMPD_taskloop, OMPD_simd, OMPD_taskloop_simd}, 153 {OMPD_target, OMPD_parallel, OMPD_target_parallel}, 154 {OMPD_target, OMPD_simd, OMPD_target_simd}, 155 {OMPD_target_parallel, OMPD_for, OMPD_target_parallel_for}, 156 {OMPD_target_parallel_for, OMPD_simd, OMPD_target_parallel_for_simd}, 157 {OMPD_teams, OMPD_distribute, OMPD_teams_distribute}, 158 {OMPD_teams_distribute, OMPD_simd, OMPD_teams_distribute_simd}, 159 {OMPD_teams_distribute, OMPD_parallel, OMPD_teams_distribute_parallel}, 160 {OMPD_teams_distribute_parallel, OMPD_for, 161 OMPD_teams_distribute_parallel_for}, 162 {OMPD_teams_distribute_parallel_for, OMPD_simd, 163 OMPD_teams_distribute_parallel_for_simd}, 164 {OMPD_target, OMPD_teams, OMPD_target_teams}, 165 {OMPD_target_teams, OMPD_distribute, OMPD_target_teams_distribute}, 166 {OMPD_target_teams_distribute, OMPD_parallel, 167 OMPD_target_teams_distribute_parallel}, 168 {OMPD_target_teams_distribute, OMPD_simd, 169 OMPD_target_teams_distribute_simd}, 170 {OMPD_target_teams_distribute_parallel, OMPD_for, 171 OMPD_target_teams_distribute_parallel_for}, 172 {OMPD_target_teams_distribute_parallel_for, OMPD_simd, 173 OMPD_target_teams_distribute_parallel_for_simd}, 174 {OMPD_master, OMPD_taskloop, OMPD_master_taskloop}, 175 {OMPD_master_taskloop, OMPD_simd, OMPD_master_taskloop_simd}, 176 {OMPD_parallel, OMPD_master, OMPD_parallel_master}, 177 {OMPD_parallel_master, OMPD_taskloop, OMPD_parallel_master_taskloop}, 178 {OMPD_parallel_master_taskloop, OMPD_simd, 179 OMPD_parallel_master_taskloop_simd}}; 180 enum { CancellationPoint = 0, DeclareReduction = 1, TargetData = 2 }; 181 Token Tok = P.getCurToken(); 182 OpenMPDirectiveKindExWrapper DKind = 183 Tok.isAnnotation() 184 ? static_cast<unsigned>(OMPD_unknown) 185 : getOpenMPDirectiveKindEx(P.getPreprocessor().getSpelling(Tok)); 186 if (DKind == OMPD_unknown) 187 return OMPD_unknown; 188 189 for (unsigned I = 0; I < llvm::array_lengthof(F); ++I) { 190 if (DKind != F[I][0]) 191 continue; 192 193 Tok = P.getPreprocessor().LookAhead(0); 194 OpenMPDirectiveKindExWrapper SDKind = 195 Tok.isAnnotation() 196 ? static_cast<unsigned>(OMPD_unknown) 197 : getOpenMPDirectiveKindEx(P.getPreprocessor().getSpelling(Tok)); 198 if (SDKind == OMPD_unknown) 199 continue; 200 201 if (SDKind == F[I][1]) { 202 P.ConsumeToken(); 203 DKind = F[I][2]; 204 } 205 } 206 return unsigned(DKind) < llvm::omp::Directive_enumSize 207 ? static_cast<OpenMPDirectiveKind>(DKind) 208 : OMPD_unknown; 209 } 210 211 static DeclarationName parseOpenMPReductionId(Parser &P) { 212 Token Tok = P.getCurToken(); 213 Sema &Actions = P.getActions(); 214 OverloadedOperatorKind OOK = OO_None; 215 // Allow to use 'operator' keyword for C++ operators 216 bool WithOperator = false; 217 if (Tok.is(tok::kw_operator)) { 218 P.ConsumeToken(); 219 Tok = P.getCurToken(); 220 WithOperator = true; 221 } 222 switch (Tok.getKind()) { 223 case tok::plus: // '+' 224 OOK = OO_Plus; 225 break; 226 case tok::minus: // '-' 227 OOK = OO_Minus; 228 break; 229 case tok::star: // '*' 230 OOK = OO_Star; 231 break; 232 case tok::amp: // '&' 233 OOK = OO_Amp; 234 break; 235 case tok::pipe: // '|' 236 OOK = OO_Pipe; 237 break; 238 case tok::caret: // '^' 239 OOK = OO_Caret; 240 break; 241 case tok::ampamp: // '&&' 242 OOK = OO_AmpAmp; 243 break; 244 case tok::pipepipe: // '||' 245 OOK = OO_PipePipe; 246 break; 247 case tok::identifier: // identifier 248 if (!WithOperator) 249 break; 250 LLVM_FALLTHROUGH; 251 default: 252 P.Diag(Tok.getLocation(), diag::err_omp_expected_reduction_identifier); 253 P.SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 254 Parser::StopBeforeMatch); 255 return DeclarationName(); 256 } 257 P.ConsumeToken(); 258 auto &DeclNames = Actions.getASTContext().DeclarationNames; 259 return OOK == OO_None ? DeclNames.getIdentifier(Tok.getIdentifierInfo()) 260 : DeclNames.getCXXOperatorName(OOK); 261 } 262 263 /// Parse 'omp declare reduction' construct. 264 /// 265 /// declare-reduction-directive: 266 /// annot_pragma_openmp 'declare' 'reduction' 267 /// '(' <reduction_id> ':' <type> {',' <type>} ':' <expression> ')' 268 /// ['initializer' '(' ('omp_priv' '=' <expression>)|<function_call> ')'] 269 /// annot_pragma_openmp_end 270 /// <reduction_id> is either a base language identifier or one of the following 271 /// operators: '+', '-', '*', '&', '|', '^', '&&' and '||'. 272 /// 273 Parser::DeclGroupPtrTy 274 Parser::ParseOpenMPDeclareReductionDirective(AccessSpecifier AS) { 275 // Parse '('. 276 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 277 if (T.expectAndConsume( 278 diag::err_expected_lparen_after, 279 getOpenMPDirectiveName(OMPD_declare_reduction).data())) { 280 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 281 return DeclGroupPtrTy(); 282 } 283 284 DeclarationName Name = parseOpenMPReductionId(*this); 285 if (Name.isEmpty() && Tok.is(tok::annot_pragma_openmp_end)) 286 return DeclGroupPtrTy(); 287 288 // Consume ':'. 289 bool IsCorrect = !ExpectAndConsume(tok::colon); 290 291 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 292 return DeclGroupPtrTy(); 293 294 IsCorrect = IsCorrect && !Name.isEmpty(); 295 296 if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) { 297 Diag(Tok.getLocation(), diag::err_expected_type); 298 IsCorrect = false; 299 } 300 301 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 302 return DeclGroupPtrTy(); 303 304 SmallVector<std::pair<QualType, SourceLocation>, 8> ReductionTypes; 305 // Parse list of types until ':' token. 306 do { 307 ColonProtectionRAIIObject ColonRAII(*this); 308 SourceRange Range; 309 TypeResult TR = ParseTypeName(&Range, DeclaratorContext::Prototype, AS); 310 if (TR.isUsable()) { 311 QualType ReductionType = 312 Actions.ActOnOpenMPDeclareReductionType(Range.getBegin(), TR); 313 if (!ReductionType.isNull()) { 314 ReductionTypes.push_back( 315 std::make_pair(ReductionType, Range.getBegin())); 316 } 317 } else { 318 SkipUntil(tok::comma, tok::colon, tok::annot_pragma_openmp_end, 319 StopBeforeMatch); 320 } 321 322 if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) 323 break; 324 325 // Consume ','. 326 if (ExpectAndConsume(tok::comma)) { 327 IsCorrect = false; 328 if (Tok.is(tok::annot_pragma_openmp_end)) { 329 Diag(Tok.getLocation(), diag::err_expected_type); 330 return DeclGroupPtrTy(); 331 } 332 } 333 } while (Tok.isNot(tok::annot_pragma_openmp_end)); 334 335 if (ReductionTypes.empty()) { 336 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 337 return DeclGroupPtrTy(); 338 } 339 340 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 341 return DeclGroupPtrTy(); 342 343 // Consume ':'. 344 if (ExpectAndConsume(tok::colon)) 345 IsCorrect = false; 346 347 if (Tok.is(tok::annot_pragma_openmp_end)) { 348 Diag(Tok.getLocation(), diag::err_expected_expression); 349 return DeclGroupPtrTy(); 350 } 351 352 DeclGroupPtrTy DRD = Actions.ActOnOpenMPDeclareReductionDirectiveStart( 353 getCurScope(), Actions.getCurLexicalContext(), Name, ReductionTypes, AS); 354 355 // Parse <combiner> expression and then parse initializer if any for each 356 // correct type. 357 unsigned I = 0, E = ReductionTypes.size(); 358 for (Decl *D : DRD.get()) { 359 TentativeParsingAction TPA(*this); 360 ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope | 361 Scope::CompoundStmtScope | 362 Scope::OpenMPDirectiveScope); 363 // Parse <combiner> expression. 364 Actions.ActOnOpenMPDeclareReductionCombinerStart(getCurScope(), D); 365 ExprResult CombinerResult = Actions.ActOnFinishFullExpr( 366 ParseExpression().get(), D->getLocation(), /*DiscardedValue*/ false); 367 Actions.ActOnOpenMPDeclareReductionCombinerEnd(D, CombinerResult.get()); 368 369 if (CombinerResult.isInvalid() && Tok.isNot(tok::r_paren) && 370 Tok.isNot(tok::annot_pragma_openmp_end)) { 371 TPA.Commit(); 372 IsCorrect = false; 373 break; 374 } 375 IsCorrect = !T.consumeClose() && IsCorrect && CombinerResult.isUsable(); 376 ExprResult InitializerResult; 377 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 378 // Parse <initializer> expression. 379 if (Tok.is(tok::identifier) && 380 Tok.getIdentifierInfo()->isStr("initializer")) { 381 ConsumeToken(); 382 } else { 383 Diag(Tok.getLocation(), diag::err_expected) << "'initializer'"; 384 TPA.Commit(); 385 IsCorrect = false; 386 break; 387 } 388 // Parse '('. 389 BalancedDelimiterTracker T(*this, tok::l_paren, 390 tok::annot_pragma_openmp_end); 391 IsCorrect = 392 !T.expectAndConsume(diag::err_expected_lparen_after, "initializer") && 393 IsCorrect; 394 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 395 ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope | 396 Scope::CompoundStmtScope | 397 Scope::OpenMPDirectiveScope); 398 // Parse expression. 399 VarDecl *OmpPrivParm = 400 Actions.ActOnOpenMPDeclareReductionInitializerStart(getCurScope(), 401 D); 402 // Check if initializer is omp_priv <init_expr> or something else. 403 if (Tok.is(tok::identifier) && 404 Tok.getIdentifierInfo()->isStr("omp_priv")) { 405 ConsumeToken(); 406 ParseOpenMPReductionInitializerForDecl(OmpPrivParm); 407 } else { 408 InitializerResult = Actions.ActOnFinishFullExpr( 409 ParseAssignmentExpression().get(), D->getLocation(), 410 /*DiscardedValue*/ false); 411 } 412 Actions.ActOnOpenMPDeclareReductionInitializerEnd( 413 D, InitializerResult.get(), OmpPrivParm); 414 if (InitializerResult.isInvalid() && Tok.isNot(tok::r_paren) && 415 Tok.isNot(tok::annot_pragma_openmp_end)) { 416 TPA.Commit(); 417 IsCorrect = false; 418 break; 419 } 420 IsCorrect = 421 !T.consumeClose() && IsCorrect && !InitializerResult.isInvalid(); 422 } 423 } 424 425 ++I; 426 // Revert parsing if not the last type, otherwise accept it, we're done with 427 // parsing. 428 if (I != E) 429 TPA.Revert(); 430 else 431 TPA.Commit(); 432 } 433 return Actions.ActOnOpenMPDeclareReductionDirectiveEnd(getCurScope(), DRD, 434 IsCorrect); 435 } 436 437 void Parser::ParseOpenMPReductionInitializerForDecl(VarDecl *OmpPrivParm) { 438 // Parse declarator '=' initializer. 439 // If a '==' or '+=' is found, suggest a fixit to '='. 440 if (isTokenEqualOrEqualTypo()) { 441 ConsumeToken(); 442 443 if (Tok.is(tok::code_completion)) { 444 Actions.CodeCompleteInitializer(getCurScope(), OmpPrivParm); 445 Actions.FinalizeDeclaration(OmpPrivParm); 446 cutOffParsing(); 447 return; 448 } 449 450 PreferredType.enterVariableInit(Tok.getLocation(), OmpPrivParm); 451 ExprResult Init = ParseInitializer(); 452 453 if (Init.isInvalid()) { 454 SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch); 455 Actions.ActOnInitializerError(OmpPrivParm); 456 } else { 457 Actions.AddInitializerToDecl(OmpPrivParm, Init.get(), 458 /*DirectInit=*/false); 459 } 460 } else if (Tok.is(tok::l_paren)) { 461 // Parse C++ direct initializer: '(' expression-list ')' 462 BalancedDelimiterTracker T(*this, tok::l_paren); 463 T.consumeOpen(); 464 465 ExprVector Exprs; 466 CommaLocsTy CommaLocs; 467 468 SourceLocation LParLoc = T.getOpenLocation(); 469 auto RunSignatureHelp = [this, OmpPrivParm, LParLoc, &Exprs]() { 470 QualType PreferredType = Actions.ProduceConstructorSignatureHelp( 471 getCurScope(), OmpPrivParm->getType()->getCanonicalTypeInternal(), 472 OmpPrivParm->getLocation(), Exprs, LParLoc); 473 CalledSignatureHelp = true; 474 return PreferredType; 475 }; 476 if (ParseExpressionList(Exprs, CommaLocs, [&] { 477 PreferredType.enterFunctionArgument(Tok.getLocation(), 478 RunSignatureHelp); 479 })) { 480 if (PP.isCodeCompletionReached() && !CalledSignatureHelp) 481 RunSignatureHelp(); 482 Actions.ActOnInitializerError(OmpPrivParm); 483 SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch); 484 } else { 485 // Match the ')'. 486 SourceLocation RLoc = Tok.getLocation(); 487 if (!T.consumeClose()) 488 RLoc = T.getCloseLocation(); 489 490 assert(!Exprs.empty() && Exprs.size() - 1 == CommaLocs.size() && 491 "Unexpected number of commas!"); 492 493 ExprResult Initializer = 494 Actions.ActOnParenListExpr(T.getOpenLocation(), RLoc, Exprs); 495 Actions.AddInitializerToDecl(OmpPrivParm, Initializer.get(), 496 /*DirectInit=*/true); 497 } 498 } else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) { 499 // Parse C++0x braced-init-list. 500 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists); 501 502 ExprResult Init(ParseBraceInitializer()); 503 504 if (Init.isInvalid()) { 505 Actions.ActOnInitializerError(OmpPrivParm); 506 } else { 507 Actions.AddInitializerToDecl(OmpPrivParm, Init.get(), 508 /*DirectInit=*/true); 509 } 510 } else { 511 Actions.ActOnUninitializedDecl(OmpPrivParm); 512 } 513 } 514 515 /// Parses 'omp declare mapper' directive. 516 /// 517 /// declare-mapper-directive: 518 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifier> ':'] 519 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 520 /// annot_pragma_openmp_end 521 /// <mapper-identifier> and <var> are base language identifiers. 522 /// 523 Parser::DeclGroupPtrTy 524 Parser::ParseOpenMPDeclareMapperDirective(AccessSpecifier AS) { 525 bool IsCorrect = true; 526 // Parse '(' 527 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 528 if (T.expectAndConsume(diag::err_expected_lparen_after, 529 getOpenMPDirectiveName(OMPD_declare_mapper).data())) { 530 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 531 return DeclGroupPtrTy(); 532 } 533 534 // Parse <mapper-identifier> 535 auto &DeclNames = Actions.getASTContext().DeclarationNames; 536 DeclarationName MapperId; 537 if (PP.LookAhead(0).is(tok::colon)) { 538 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) { 539 Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier); 540 IsCorrect = false; 541 } else { 542 MapperId = DeclNames.getIdentifier(Tok.getIdentifierInfo()); 543 } 544 ConsumeToken(); 545 // Consume ':'. 546 ExpectAndConsume(tok::colon); 547 } else { 548 // If no mapper identifier is provided, its name is "default" by default 549 MapperId = 550 DeclNames.getIdentifier(&Actions.getASTContext().Idents.get("default")); 551 } 552 553 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 554 return DeclGroupPtrTy(); 555 556 // Parse <type> <var> 557 DeclarationName VName; 558 QualType MapperType; 559 SourceRange Range; 560 TypeResult ParsedType = parseOpenMPDeclareMapperVarDecl(Range, VName, AS); 561 if (ParsedType.isUsable()) 562 MapperType = 563 Actions.ActOnOpenMPDeclareMapperType(Range.getBegin(), ParsedType); 564 if (MapperType.isNull()) 565 IsCorrect = false; 566 if (!IsCorrect) { 567 SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch); 568 return DeclGroupPtrTy(); 569 } 570 571 // Consume ')'. 572 IsCorrect &= !T.consumeClose(); 573 if (!IsCorrect) { 574 SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch); 575 return DeclGroupPtrTy(); 576 } 577 578 // Enter scope. 579 DeclarationNameInfo DirName; 580 SourceLocation Loc = Tok.getLocation(); 581 unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope | 582 Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope; 583 ParseScope OMPDirectiveScope(this, ScopeFlags); 584 Actions.StartOpenMPDSABlock(OMPD_declare_mapper, DirName, getCurScope(), Loc); 585 586 // Add the mapper variable declaration. 587 ExprResult MapperVarRef = Actions.ActOnOpenMPDeclareMapperDirectiveVarDecl( 588 getCurScope(), MapperType, Range.getBegin(), VName); 589 590 // Parse map clauses. 591 SmallVector<OMPClause *, 6> Clauses; 592 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 593 OpenMPClauseKind CKind = Tok.isAnnotation() 594 ? OMPC_unknown 595 : getOpenMPClauseKind(PP.getSpelling(Tok)); 596 Actions.StartOpenMPClause(CKind); 597 OMPClause *Clause = 598 ParseOpenMPClause(OMPD_declare_mapper, CKind, Clauses.empty()); 599 if (Clause) 600 Clauses.push_back(Clause); 601 else 602 IsCorrect = false; 603 // Skip ',' if any. 604 if (Tok.is(tok::comma)) 605 ConsumeToken(); 606 Actions.EndOpenMPClause(); 607 } 608 if (Clauses.empty()) { 609 Diag(Tok, diag::err_omp_expected_clause) 610 << getOpenMPDirectiveName(OMPD_declare_mapper); 611 IsCorrect = false; 612 } 613 614 // Exit scope. 615 Actions.EndOpenMPDSABlock(nullptr); 616 OMPDirectiveScope.Exit(); 617 DeclGroupPtrTy DG = Actions.ActOnOpenMPDeclareMapperDirective( 618 getCurScope(), Actions.getCurLexicalContext(), MapperId, MapperType, 619 Range.getBegin(), VName, AS, MapperVarRef.get(), Clauses); 620 if (!IsCorrect) 621 return DeclGroupPtrTy(); 622 623 return DG; 624 } 625 626 TypeResult Parser::parseOpenMPDeclareMapperVarDecl(SourceRange &Range, 627 DeclarationName &Name, 628 AccessSpecifier AS) { 629 // Parse the common declaration-specifiers piece. 630 Parser::DeclSpecContext DSC = Parser::DeclSpecContext::DSC_type_specifier; 631 DeclSpec DS(AttrFactory); 632 ParseSpecifierQualifierList(DS, AS, DSC); 633 634 // Parse the declarator. 635 DeclaratorContext Context = DeclaratorContext::Prototype; 636 Declarator DeclaratorInfo(DS, Context); 637 ParseDeclarator(DeclaratorInfo); 638 Range = DeclaratorInfo.getSourceRange(); 639 if (DeclaratorInfo.getIdentifier() == nullptr) { 640 Diag(Tok.getLocation(), diag::err_omp_mapper_expected_declarator); 641 return true; 642 } 643 Name = Actions.GetNameForDeclarator(DeclaratorInfo).getName(); 644 645 return Actions.ActOnOpenMPDeclareMapperVarDecl(getCurScope(), DeclaratorInfo); 646 } 647 648 namespace { 649 /// RAII that recreates function context for correct parsing of clauses of 650 /// 'declare simd' construct. 651 /// OpenMP, 2.8.2 declare simd Construct 652 /// The expressions appearing in the clauses of this directive are evaluated in 653 /// the scope of the arguments of the function declaration or definition. 654 class FNContextRAII final { 655 Parser &P; 656 Sema::CXXThisScopeRAII *ThisScope; 657 Parser::MultiParseScope Scopes; 658 bool HasFunScope = false; 659 FNContextRAII() = delete; 660 FNContextRAII(const FNContextRAII &) = delete; 661 FNContextRAII &operator=(const FNContextRAII &) = delete; 662 663 public: 664 FNContextRAII(Parser &P, Parser::DeclGroupPtrTy Ptr) : P(P), Scopes(P) { 665 Decl *D = *Ptr.get().begin(); 666 NamedDecl *ND = dyn_cast<NamedDecl>(D); 667 RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext()); 668 Sema &Actions = P.getActions(); 669 670 // Allow 'this' within late-parsed attributes. 671 ThisScope = new Sema::CXXThisScopeRAII(Actions, RD, Qualifiers(), 672 ND && ND->isCXXInstanceMember()); 673 674 // If the Decl is templatized, add template parameters to scope. 675 // FIXME: Track CurTemplateDepth? 676 P.ReenterTemplateScopes(Scopes, D); 677 678 // If the Decl is on a function, add function parameters to the scope. 679 if (D->isFunctionOrFunctionTemplate()) { 680 HasFunScope = true; 681 Scopes.Enter(Scope::FnScope | Scope::DeclScope | 682 Scope::CompoundStmtScope); 683 Actions.ActOnReenterFunctionContext(Actions.getCurScope(), D); 684 } 685 } 686 ~FNContextRAII() { 687 if (HasFunScope) 688 P.getActions().ActOnExitFunctionContext(); 689 delete ThisScope; 690 } 691 }; 692 } // namespace 693 694 /// Parses clauses for 'declare simd' directive. 695 /// clause: 696 /// 'inbranch' | 'notinbranch' 697 /// 'simdlen' '(' <expr> ')' 698 /// { 'uniform' '(' <argument_list> ')' } 699 /// { 'aligned '(' <argument_list> [ ':' <alignment> ] ')' } 700 /// { 'linear '(' <argument_list> [ ':' <step> ] ')' } 701 static bool parseDeclareSimdClauses( 702 Parser &P, OMPDeclareSimdDeclAttr::BranchStateTy &BS, ExprResult &SimdLen, 703 SmallVectorImpl<Expr *> &Uniforms, SmallVectorImpl<Expr *> &Aligneds, 704 SmallVectorImpl<Expr *> &Alignments, SmallVectorImpl<Expr *> &Linears, 705 SmallVectorImpl<unsigned> &LinModifiers, SmallVectorImpl<Expr *> &Steps) { 706 SourceRange BSRange; 707 const Token &Tok = P.getCurToken(); 708 bool IsError = false; 709 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 710 if (Tok.isNot(tok::identifier)) 711 break; 712 OMPDeclareSimdDeclAttr::BranchStateTy Out; 713 IdentifierInfo *II = Tok.getIdentifierInfo(); 714 StringRef ClauseName = II->getName(); 715 // Parse 'inranch|notinbranch' clauses. 716 if (OMPDeclareSimdDeclAttr::ConvertStrToBranchStateTy(ClauseName, Out)) { 717 if (BS != OMPDeclareSimdDeclAttr::BS_Undefined && BS != Out) { 718 P.Diag(Tok, diag::err_omp_declare_simd_inbranch_notinbranch) 719 << ClauseName 720 << OMPDeclareSimdDeclAttr::ConvertBranchStateTyToStr(BS) << BSRange; 721 IsError = true; 722 } 723 BS = Out; 724 BSRange = SourceRange(Tok.getLocation(), Tok.getEndLoc()); 725 P.ConsumeToken(); 726 } else if (ClauseName.equals("simdlen")) { 727 if (SimdLen.isUsable()) { 728 P.Diag(Tok, diag::err_omp_more_one_clause) 729 << getOpenMPDirectiveName(OMPD_declare_simd) << ClauseName << 0; 730 IsError = true; 731 } 732 P.ConsumeToken(); 733 SourceLocation RLoc; 734 SimdLen = P.ParseOpenMPParensExpr(ClauseName, RLoc); 735 if (SimdLen.isInvalid()) 736 IsError = true; 737 } else { 738 OpenMPClauseKind CKind = getOpenMPClauseKind(ClauseName); 739 if (CKind == OMPC_uniform || CKind == OMPC_aligned || 740 CKind == OMPC_linear) { 741 Parser::OpenMPVarListDataTy Data; 742 SmallVectorImpl<Expr *> *Vars = &Uniforms; 743 if (CKind == OMPC_aligned) { 744 Vars = &Aligneds; 745 } else if (CKind == OMPC_linear) { 746 Data.ExtraModifier = OMPC_LINEAR_val; 747 Vars = &Linears; 748 } 749 750 P.ConsumeToken(); 751 if (P.ParseOpenMPVarList(OMPD_declare_simd, 752 getOpenMPClauseKind(ClauseName), *Vars, Data)) 753 IsError = true; 754 if (CKind == OMPC_aligned) { 755 Alignments.append(Aligneds.size() - Alignments.size(), 756 Data.DepModOrTailExpr); 757 } else if (CKind == OMPC_linear) { 758 assert(0 <= Data.ExtraModifier && 759 Data.ExtraModifier <= OMPC_LINEAR_unknown && 760 "Unexpected linear modifier."); 761 if (P.getActions().CheckOpenMPLinearModifier( 762 static_cast<OpenMPLinearClauseKind>(Data.ExtraModifier), 763 Data.ExtraModifierLoc)) 764 Data.ExtraModifier = OMPC_LINEAR_val; 765 LinModifiers.append(Linears.size() - LinModifiers.size(), 766 Data.ExtraModifier); 767 Steps.append(Linears.size() - Steps.size(), Data.DepModOrTailExpr); 768 } 769 } else 770 // TODO: add parsing of other clauses. 771 break; 772 } 773 // Skip ',' if any. 774 if (Tok.is(tok::comma)) 775 P.ConsumeToken(); 776 } 777 return IsError; 778 } 779 780 /// Parse clauses for '#pragma omp declare simd'. 781 Parser::DeclGroupPtrTy 782 Parser::ParseOMPDeclareSimdClauses(Parser::DeclGroupPtrTy Ptr, 783 CachedTokens &Toks, SourceLocation Loc) { 784 PP.EnterToken(Tok, /*IsReinject*/ true); 785 PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true, 786 /*IsReinject*/ true); 787 // Consume the previously pushed token. 788 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 789 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 790 791 FNContextRAII FnContext(*this, Ptr); 792 OMPDeclareSimdDeclAttr::BranchStateTy BS = 793 OMPDeclareSimdDeclAttr::BS_Undefined; 794 ExprResult Simdlen; 795 SmallVector<Expr *, 4> Uniforms; 796 SmallVector<Expr *, 4> Aligneds; 797 SmallVector<Expr *, 4> Alignments; 798 SmallVector<Expr *, 4> Linears; 799 SmallVector<unsigned, 4> LinModifiers; 800 SmallVector<Expr *, 4> Steps; 801 bool IsError = 802 parseDeclareSimdClauses(*this, BS, Simdlen, Uniforms, Aligneds, 803 Alignments, Linears, LinModifiers, Steps); 804 skipUntilPragmaOpenMPEnd(OMPD_declare_simd); 805 // Skip the last annot_pragma_openmp_end. 806 SourceLocation EndLoc = ConsumeAnnotationToken(); 807 if (IsError) 808 return Ptr; 809 return Actions.ActOnOpenMPDeclareSimdDirective( 810 Ptr, BS, Simdlen.get(), Uniforms, Aligneds, Alignments, Linears, 811 LinModifiers, Steps, SourceRange(Loc, EndLoc)); 812 } 813 814 namespace { 815 /// Constant used in the diagnostics to distinguish the levels in an OpenMP 816 /// contexts: selector-set={selector(trait, ...), ...}, .... 817 enum OMPContextLvl { 818 CONTEXT_SELECTOR_SET_LVL = 0, 819 CONTEXT_SELECTOR_LVL = 1, 820 CONTEXT_TRAIT_LVL = 2, 821 }; 822 823 static StringRef stringLiteralParser(Parser &P) { 824 ExprResult Res = P.ParseStringLiteralExpression(true); 825 return Res.isUsable() ? Res.getAs<StringLiteral>()->getString() : ""; 826 } 827 828 static StringRef getNameFromIdOrString(Parser &P, Token &Tok, 829 OMPContextLvl Lvl) { 830 if (Tok.is(tok::identifier)) { 831 llvm::SmallString<16> Buffer; 832 StringRef Name = P.getPreprocessor().getSpelling(Tok, Buffer); 833 (void)P.ConsumeToken(); 834 return Name; 835 } 836 837 if (tok::isStringLiteral(Tok.getKind())) 838 return stringLiteralParser(P); 839 840 P.Diag(Tok.getLocation(), 841 diag::warn_omp_declare_variant_string_literal_or_identifier) 842 << Lvl; 843 return ""; 844 } 845 846 static bool checkForDuplicates(Parser &P, StringRef Name, 847 SourceLocation NameLoc, 848 llvm::StringMap<SourceLocation> &Seen, 849 OMPContextLvl Lvl) { 850 auto Res = Seen.try_emplace(Name, NameLoc); 851 if (Res.second) 852 return false; 853 854 // Each trait-set-selector-name, trait-selector-name and trait-name can 855 // only be specified once. 856 P.Diag(NameLoc, diag::warn_omp_declare_variant_ctx_mutiple_use) 857 << Lvl << Name; 858 P.Diag(Res.first->getValue(), diag::note_omp_declare_variant_ctx_used_here) 859 << Lvl << Name; 860 return true; 861 } 862 } // namespace 863 864 void Parser::parseOMPTraitPropertyKind(OMPTraitProperty &TIProperty, 865 llvm::omp::TraitSet Set, 866 llvm::omp::TraitSelector Selector, 867 llvm::StringMap<SourceLocation> &Seen) { 868 TIProperty.Kind = TraitProperty::invalid; 869 870 SourceLocation NameLoc = Tok.getLocation(); 871 StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_TRAIT_LVL); 872 if (Name.empty()) { 873 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options) 874 << CONTEXT_TRAIT_LVL << listOpenMPContextTraitProperties(Set, Selector); 875 return; 876 } 877 878 TIProperty.RawString = Name; 879 TIProperty.Kind = getOpenMPContextTraitPropertyKind(Set, Selector, Name); 880 if (TIProperty.Kind != TraitProperty::invalid) { 881 if (checkForDuplicates(*this, Name, NameLoc, Seen, CONTEXT_TRAIT_LVL)) 882 TIProperty.Kind = TraitProperty::invalid; 883 return; 884 } 885 886 // It follows diagnosis and helping notes. 887 // FIXME: We should move the diagnosis string generation into libFrontend. 888 Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_property) 889 << Name << getOpenMPContextTraitSelectorName(Selector) 890 << getOpenMPContextTraitSetName(Set); 891 892 TraitSet SetForName = getOpenMPContextTraitSetKind(Name); 893 if (SetForName != TraitSet::invalid) { 894 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 895 << Name << CONTEXT_SELECTOR_SET_LVL << CONTEXT_TRAIT_LVL; 896 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 897 << Name << "<selector-name>" 898 << "(<property-name>)"; 899 return; 900 } 901 TraitSelector SelectorForName = getOpenMPContextTraitSelectorKind(Name); 902 if (SelectorForName != TraitSelector::invalid) { 903 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 904 << Name << CONTEXT_SELECTOR_LVL << CONTEXT_TRAIT_LVL; 905 bool AllowsTraitScore = false; 906 bool RequiresProperty = false; 907 isValidTraitSelectorForTraitSet( 908 SelectorForName, getOpenMPContextTraitSetForSelector(SelectorForName), 909 AllowsTraitScore, RequiresProperty); 910 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 911 << getOpenMPContextTraitSetName( 912 getOpenMPContextTraitSetForSelector(SelectorForName)) 913 << Name << (RequiresProperty ? "(<property-name>)" : ""); 914 return; 915 } 916 for (const auto &PotentialSet : 917 {TraitSet::construct, TraitSet::user, TraitSet::implementation, 918 TraitSet::device}) { 919 TraitProperty PropertyForName = 920 getOpenMPContextTraitPropertyKind(PotentialSet, Selector, Name); 921 if (PropertyForName == TraitProperty::invalid) 922 continue; 923 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 924 << getOpenMPContextTraitSetName( 925 getOpenMPContextTraitSetForProperty(PropertyForName)) 926 << getOpenMPContextTraitSelectorName( 927 getOpenMPContextTraitSelectorForProperty(PropertyForName)) 928 << ("(" + Name + ")").str(); 929 return; 930 } 931 Diag(NameLoc, diag::note_omp_declare_variant_ctx_options) 932 << CONTEXT_TRAIT_LVL << listOpenMPContextTraitProperties(Set, Selector); 933 } 934 935 static bool checkExtensionProperty(Parser &P, SourceLocation Loc, 936 OMPTraitProperty &TIProperty, 937 OMPTraitSelector &TISelector, 938 llvm::StringMap<SourceLocation> &Seen) { 939 assert(TISelector.Kind == 940 llvm::omp::TraitSelector::implementation_extension && 941 "Only for extension properties, e.g., " 942 "`implementation={extension(PROPERTY)}`"); 943 if (TIProperty.Kind == TraitProperty::invalid) 944 return false; 945 946 if (TIProperty.Kind == 947 TraitProperty::implementation_extension_disable_implicit_base) 948 return true; 949 950 if (TIProperty.Kind == 951 TraitProperty::implementation_extension_allow_templates) 952 return true; 953 954 auto IsMatchExtension = [](OMPTraitProperty &TP) { 955 return (TP.Kind == 956 llvm::omp::TraitProperty::implementation_extension_match_all || 957 TP.Kind == 958 llvm::omp::TraitProperty::implementation_extension_match_any || 959 TP.Kind == 960 llvm::omp::TraitProperty::implementation_extension_match_none); 961 }; 962 963 if (IsMatchExtension(TIProperty)) { 964 for (OMPTraitProperty &SeenProp : TISelector.Properties) 965 if (IsMatchExtension(SeenProp)) { 966 P.Diag(Loc, diag::err_omp_variant_ctx_second_match_extension); 967 StringRef SeenName = llvm::omp::getOpenMPContextTraitPropertyName( 968 SeenProp.Kind, SeenProp.RawString); 969 SourceLocation SeenLoc = Seen[SeenName]; 970 P.Diag(SeenLoc, diag::note_omp_declare_variant_ctx_used_here) 971 << CONTEXT_TRAIT_LVL << SeenName; 972 return false; 973 } 974 return true; 975 } 976 977 llvm_unreachable("Unknown extension property!"); 978 } 979 980 void Parser::parseOMPContextProperty(OMPTraitSelector &TISelector, 981 llvm::omp::TraitSet Set, 982 llvm::StringMap<SourceLocation> &Seen) { 983 assert(TISelector.Kind != TraitSelector::user_condition && 984 "User conditions are special properties not handled here!"); 985 986 SourceLocation PropertyLoc = Tok.getLocation(); 987 OMPTraitProperty TIProperty; 988 parseOMPTraitPropertyKind(TIProperty, Set, TISelector.Kind, Seen); 989 990 if (TISelector.Kind == llvm::omp::TraitSelector::implementation_extension) 991 if (!checkExtensionProperty(*this, Tok.getLocation(), TIProperty, 992 TISelector, Seen)) 993 TIProperty.Kind = TraitProperty::invalid; 994 995 // If we have an invalid property here we already issued a warning. 996 if (TIProperty.Kind == TraitProperty::invalid) { 997 if (PropertyLoc != Tok.getLocation()) 998 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 999 << CONTEXT_TRAIT_LVL; 1000 return; 1001 } 1002 1003 if (isValidTraitPropertyForTraitSetAndSelector(TIProperty.Kind, 1004 TISelector.Kind, Set)) { 1005 1006 // If we make it here the property, selector, set, score, condition, ... are 1007 // all valid (or have been corrected). Thus we can record the property. 1008 TISelector.Properties.push_back(TIProperty); 1009 return; 1010 } 1011 1012 Diag(PropertyLoc, diag::warn_omp_ctx_incompatible_property_for_selector) 1013 << getOpenMPContextTraitPropertyName(TIProperty.Kind, 1014 TIProperty.RawString) 1015 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1016 << getOpenMPContextTraitSetName(Set); 1017 Diag(PropertyLoc, diag::note_omp_ctx_compatible_set_and_selector_for_property) 1018 << getOpenMPContextTraitPropertyName(TIProperty.Kind, 1019 TIProperty.RawString) 1020 << getOpenMPContextTraitSelectorName( 1021 getOpenMPContextTraitSelectorForProperty(TIProperty.Kind)) 1022 << getOpenMPContextTraitSetName( 1023 getOpenMPContextTraitSetForProperty(TIProperty.Kind)); 1024 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1025 << CONTEXT_TRAIT_LVL; 1026 } 1027 1028 void Parser::parseOMPTraitSelectorKind(OMPTraitSelector &TISelector, 1029 llvm::omp::TraitSet Set, 1030 llvm::StringMap<SourceLocation> &Seen) { 1031 TISelector.Kind = TraitSelector::invalid; 1032 1033 SourceLocation NameLoc = Tok.getLocation(); 1034 StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_SELECTOR_LVL); 1035 if (Name.empty()) { 1036 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options) 1037 << CONTEXT_SELECTOR_LVL << listOpenMPContextTraitSelectors(Set); 1038 return; 1039 } 1040 1041 TISelector.Kind = getOpenMPContextTraitSelectorKind(Name); 1042 if (TISelector.Kind != TraitSelector::invalid) { 1043 if (checkForDuplicates(*this, Name, NameLoc, Seen, CONTEXT_SELECTOR_LVL)) 1044 TISelector.Kind = TraitSelector::invalid; 1045 return; 1046 } 1047 1048 // It follows diagnosis and helping notes. 1049 Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_selector) 1050 << Name << getOpenMPContextTraitSetName(Set); 1051 1052 TraitSet SetForName = getOpenMPContextTraitSetKind(Name); 1053 if (SetForName != TraitSet::invalid) { 1054 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1055 << Name << CONTEXT_SELECTOR_SET_LVL << CONTEXT_SELECTOR_LVL; 1056 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1057 << Name << "<selector-name>" 1058 << "<property-name>"; 1059 return; 1060 } 1061 for (const auto &PotentialSet : 1062 {TraitSet::construct, TraitSet::user, TraitSet::implementation, 1063 TraitSet::device}) { 1064 TraitProperty PropertyForName = getOpenMPContextTraitPropertyKind( 1065 PotentialSet, TraitSelector::invalid, Name); 1066 if (PropertyForName == TraitProperty::invalid) 1067 continue; 1068 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1069 << Name << CONTEXT_TRAIT_LVL << CONTEXT_SELECTOR_LVL; 1070 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1071 << getOpenMPContextTraitSetName( 1072 getOpenMPContextTraitSetForProperty(PropertyForName)) 1073 << getOpenMPContextTraitSelectorName( 1074 getOpenMPContextTraitSelectorForProperty(PropertyForName)) 1075 << ("(" + Name + ")").str(); 1076 return; 1077 } 1078 Diag(NameLoc, diag::note_omp_declare_variant_ctx_options) 1079 << CONTEXT_SELECTOR_LVL << listOpenMPContextTraitSelectors(Set); 1080 } 1081 1082 /// Parse optional 'score' '(' <expr> ')' ':'. 1083 static ExprResult parseContextScore(Parser &P) { 1084 ExprResult ScoreExpr; 1085 llvm::SmallString<16> Buffer; 1086 StringRef SelectorName = 1087 P.getPreprocessor().getSpelling(P.getCurToken(), Buffer); 1088 if (!SelectorName.equals("score")) 1089 return ScoreExpr; 1090 (void)P.ConsumeToken(); 1091 SourceLocation RLoc; 1092 ScoreExpr = P.ParseOpenMPParensExpr(SelectorName, RLoc); 1093 // Parse ':' 1094 if (P.getCurToken().is(tok::colon)) 1095 (void)P.ConsumeAnyToken(); 1096 else 1097 P.Diag(P.getCurToken(), diag::warn_omp_declare_variant_expected) 1098 << "':'" 1099 << "score expression"; 1100 return ScoreExpr; 1101 } 1102 1103 /// Parses an OpenMP context selector. 1104 /// 1105 /// <trait-selector-name> ['('[<trait-score>] <trait-property> [, <t-p>]* ')'] 1106 void Parser::parseOMPContextSelector( 1107 OMPTraitSelector &TISelector, llvm::omp::TraitSet Set, 1108 llvm::StringMap<SourceLocation> &SeenSelectors) { 1109 unsigned short OuterPC = ParenCount; 1110 1111 // If anything went wrong we issue an error or warning and then skip the rest 1112 // of the selector. However, commas are ambiguous so we look for the nesting 1113 // of parentheses here as well. 1114 auto FinishSelector = [OuterPC, this]() -> void { 1115 bool Done = false; 1116 while (!Done) { 1117 while (!SkipUntil({tok::r_brace, tok::r_paren, tok::comma, 1118 tok::annot_pragma_openmp_end}, 1119 StopBeforeMatch)) 1120 ; 1121 if (Tok.is(tok::r_paren) && OuterPC > ParenCount) 1122 (void)ConsumeParen(); 1123 if (OuterPC <= ParenCount) { 1124 Done = true; 1125 break; 1126 } 1127 if (!Tok.is(tok::comma) && !Tok.is(tok::r_paren)) { 1128 Done = true; 1129 break; 1130 } 1131 (void)ConsumeAnyToken(); 1132 } 1133 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1134 << CONTEXT_SELECTOR_LVL; 1135 }; 1136 1137 SourceLocation SelectorLoc = Tok.getLocation(); 1138 parseOMPTraitSelectorKind(TISelector, Set, SeenSelectors); 1139 if (TISelector.Kind == TraitSelector::invalid) 1140 return FinishSelector(); 1141 1142 bool AllowsTraitScore = false; 1143 bool RequiresProperty = false; 1144 if (!isValidTraitSelectorForTraitSet(TISelector.Kind, Set, AllowsTraitScore, 1145 RequiresProperty)) { 1146 Diag(SelectorLoc, diag::warn_omp_ctx_incompatible_selector_for_set) 1147 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1148 << getOpenMPContextTraitSetName(Set); 1149 Diag(SelectorLoc, diag::note_omp_ctx_compatible_set_for_selector) 1150 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1151 << getOpenMPContextTraitSetName( 1152 getOpenMPContextTraitSetForSelector(TISelector.Kind)) 1153 << RequiresProperty; 1154 return FinishSelector(); 1155 } 1156 1157 if (!RequiresProperty) { 1158 TISelector.Properties.push_back( 1159 {getOpenMPContextTraitPropertyForSelector(TISelector.Kind), 1160 getOpenMPContextTraitSelectorName(TISelector.Kind)}); 1161 return; 1162 } 1163 1164 if (!Tok.is(tok::l_paren)) { 1165 Diag(SelectorLoc, diag::warn_omp_ctx_selector_without_properties) 1166 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1167 << getOpenMPContextTraitSetName(Set); 1168 return FinishSelector(); 1169 } 1170 1171 if (TISelector.Kind == TraitSelector::user_condition) { 1172 SourceLocation RLoc; 1173 ExprResult Condition = ParseOpenMPParensExpr("user condition", RLoc); 1174 if (!Condition.isUsable()) 1175 return FinishSelector(); 1176 TISelector.ScoreOrCondition = Condition.get(); 1177 TISelector.Properties.push_back( 1178 {TraitProperty::user_condition_unknown, "<condition>"}); 1179 return; 1180 } 1181 1182 BalancedDelimiterTracker BDT(*this, tok::l_paren, 1183 tok::annot_pragma_openmp_end); 1184 // Parse '('. 1185 (void)BDT.consumeOpen(); 1186 1187 SourceLocation ScoreLoc = Tok.getLocation(); 1188 ExprResult Score = parseContextScore(*this); 1189 1190 if (!AllowsTraitScore && !Score.isUnset()) { 1191 if (Score.isUsable()) { 1192 Diag(ScoreLoc, diag::warn_omp_ctx_incompatible_score_for_property) 1193 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1194 << getOpenMPContextTraitSetName(Set) << Score.get(); 1195 } else { 1196 Diag(ScoreLoc, diag::warn_omp_ctx_incompatible_score_for_property) 1197 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1198 << getOpenMPContextTraitSetName(Set) << "<invalid>"; 1199 } 1200 Score = ExprResult(); 1201 } 1202 1203 if (Score.isUsable()) 1204 TISelector.ScoreOrCondition = Score.get(); 1205 1206 llvm::StringMap<SourceLocation> SeenProperties; 1207 do { 1208 parseOMPContextProperty(TISelector, Set, SeenProperties); 1209 } while (TryConsumeToken(tok::comma)); 1210 1211 // Parse ')'. 1212 BDT.consumeClose(); 1213 } 1214 1215 void Parser::parseOMPTraitSetKind(OMPTraitSet &TISet, 1216 llvm::StringMap<SourceLocation> &Seen) { 1217 TISet.Kind = TraitSet::invalid; 1218 1219 SourceLocation NameLoc = Tok.getLocation(); 1220 StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_SELECTOR_SET_LVL); 1221 if (Name.empty()) { 1222 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options) 1223 << CONTEXT_SELECTOR_SET_LVL << listOpenMPContextTraitSets(); 1224 return; 1225 } 1226 1227 TISet.Kind = getOpenMPContextTraitSetKind(Name); 1228 if (TISet.Kind != TraitSet::invalid) { 1229 if (checkForDuplicates(*this, Name, NameLoc, Seen, 1230 CONTEXT_SELECTOR_SET_LVL)) 1231 TISet.Kind = TraitSet::invalid; 1232 return; 1233 } 1234 1235 // It follows diagnosis and helping notes. 1236 Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_set) << Name; 1237 1238 TraitSelector SelectorForName = getOpenMPContextTraitSelectorKind(Name); 1239 if (SelectorForName != TraitSelector::invalid) { 1240 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1241 << Name << CONTEXT_SELECTOR_LVL << CONTEXT_SELECTOR_SET_LVL; 1242 bool AllowsTraitScore = false; 1243 bool RequiresProperty = false; 1244 isValidTraitSelectorForTraitSet( 1245 SelectorForName, getOpenMPContextTraitSetForSelector(SelectorForName), 1246 AllowsTraitScore, RequiresProperty); 1247 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1248 << getOpenMPContextTraitSetName( 1249 getOpenMPContextTraitSetForSelector(SelectorForName)) 1250 << Name << (RequiresProperty ? "(<property-name>)" : ""); 1251 return; 1252 } 1253 for (const auto &PotentialSet : 1254 {TraitSet::construct, TraitSet::user, TraitSet::implementation, 1255 TraitSet::device}) { 1256 TraitProperty PropertyForName = getOpenMPContextTraitPropertyKind( 1257 PotentialSet, TraitSelector::invalid, Name); 1258 if (PropertyForName == TraitProperty::invalid) 1259 continue; 1260 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1261 << Name << CONTEXT_TRAIT_LVL << CONTEXT_SELECTOR_SET_LVL; 1262 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1263 << getOpenMPContextTraitSetName( 1264 getOpenMPContextTraitSetForProperty(PropertyForName)) 1265 << getOpenMPContextTraitSelectorName( 1266 getOpenMPContextTraitSelectorForProperty(PropertyForName)) 1267 << ("(" + Name + ")").str(); 1268 return; 1269 } 1270 Diag(NameLoc, diag::note_omp_declare_variant_ctx_options) 1271 << CONTEXT_SELECTOR_SET_LVL << listOpenMPContextTraitSets(); 1272 } 1273 1274 /// Parses an OpenMP context selector set. 1275 /// 1276 /// <trait-set-selector-name> '=' '{' <trait-selector> [, <trait-selector>]* '}' 1277 void Parser::parseOMPContextSelectorSet( 1278 OMPTraitSet &TISet, llvm::StringMap<SourceLocation> &SeenSets) { 1279 auto OuterBC = BraceCount; 1280 1281 // If anything went wrong we issue an error or warning and then skip the rest 1282 // of the set. However, commas are ambiguous so we look for the nesting 1283 // of braces here as well. 1284 auto FinishSelectorSet = [this, OuterBC]() -> void { 1285 bool Done = false; 1286 while (!Done) { 1287 while (!SkipUntil({tok::comma, tok::r_brace, tok::r_paren, 1288 tok::annot_pragma_openmp_end}, 1289 StopBeforeMatch)) 1290 ; 1291 if (Tok.is(tok::r_brace) && OuterBC > BraceCount) 1292 (void)ConsumeBrace(); 1293 if (OuterBC <= BraceCount) { 1294 Done = true; 1295 break; 1296 } 1297 if (!Tok.is(tok::comma) && !Tok.is(tok::r_brace)) { 1298 Done = true; 1299 break; 1300 } 1301 (void)ConsumeAnyToken(); 1302 } 1303 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1304 << CONTEXT_SELECTOR_SET_LVL; 1305 }; 1306 1307 parseOMPTraitSetKind(TISet, SeenSets); 1308 if (TISet.Kind == TraitSet::invalid) 1309 return FinishSelectorSet(); 1310 1311 // Parse '='. 1312 if (!TryConsumeToken(tok::equal)) 1313 Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected) 1314 << "=" 1315 << ("context set name \"" + getOpenMPContextTraitSetName(TISet.Kind) + 1316 "\"") 1317 .str(); 1318 1319 // Parse '{'. 1320 if (Tok.is(tok::l_brace)) { 1321 (void)ConsumeBrace(); 1322 } else { 1323 Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected) 1324 << "{" 1325 << ("'=' that follows the context set name \"" + 1326 getOpenMPContextTraitSetName(TISet.Kind) + "\"") 1327 .str(); 1328 } 1329 1330 llvm::StringMap<SourceLocation> SeenSelectors; 1331 do { 1332 OMPTraitSelector TISelector; 1333 parseOMPContextSelector(TISelector, TISet.Kind, SeenSelectors); 1334 if (TISelector.Kind != TraitSelector::invalid && 1335 !TISelector.Properties.empty()) 1336 TISet.Selectors.push_back(TISelector); 1337 } while (TryConsumeToken(tok::comma)); 1338 1339 // Parse '}'. 1340 if (Tok.is(tok::r_brace)) { 1341 (void)ConsumeBrace(); 1342 } else { 1343 Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected) 1344 << "}" 1345 << ("context selectors for the context set \"" + 1346 getOpenMPContextTraitSetName(TISet.Kind) + "\"") 1347 .str(); 1348 } 1349 } 1350 1351 /// Parse OpenMP context selectors: 1352 /// 1353 /// <trait-set-selector> [, <trait-set-selector>]* 1354 bool Parser::parseOMPContextSelectors(SourceLocation Loc, OMPTraitInfo &TI) { 1355 llvm::StringMap<SourceLocation> SeenSets; 1356 do { 1357 OMPTraitSet TISet; 1358 parseOMPContextSelectorSet(TISet, SeenSets); 1359 if (TISet.Kind != TraitSet::invalid && !TISet.Selectors.empty()) 1360 TI.Sets.push_back(TISet); 1361 } while (TryConsumeToken(tok::comma)); 1362 1363 return false; 1364 } 1365 1366 /// Parse clauses for '#pragma omp declare variant ( variant-func-id ) clause'. 1367 void Parser::ParseOMPDeclareVariantClauses(Parser::DeclGroupPtrTy Ptr, 1368 CachedTokens &Toks, 1369 SourceLocation Loc) { 1370 PP.EnterToken(Tok, /*IsReinject*/ true); 1371 PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true, 1372 /*IsReinject*/ true); 1373 // Consume the previously pushed token. 1374 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 1375 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 1376 1377 FNContextRAII FnContext(*this, Ptr); 1378 // Parse function declaration id. 1379 SourceLocation RLoc; 1380 // Parse with IsAddressOfOperand set to true to parse methods as DeclRefExprs 1381 // instead of MemberExprs. 1382 ExprResult AssociatedFunction; 1383 { 1384 // Do not mark function as is used to prevent its emission if this is the 1385 // only place where it is used. 1386 EnterExpressionEvaluationContext Unevaluated( 1387 Actions, Sema::ExpressionEvaluationContext::Unevaluated); 1388 AssociatedFunction = ParseOpenMPParensExpr( 1389 getOpenMPDirectiveName(OMPD_declare_variant), RLoc, 1390 /*IsAddressOfOperand=*/true); 1391 } 1392 if (!AssociatedFunction.isUsable()) { 1393 if (!Tok.is(tok::annot_pragma_openmp_end)) 1394 while (!SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch)) 1395 ; 1396 // Skip the last annot_pragma_openmp_end. 1397 (void)ConsumeAnnotationToken(); 1398 return; 1399 } 1400 1401 OMPTraitInfo *ParentTI = Actions.getOMPTraitInfoForSurroundingScope(); 1402 ASTContext &ASTCtx = Actions.getASTContext(); 1403 OMPTraitInfo &TI = ASTCtx.getNewOMPTraitInfo(); 1404 if (parseOMPDeclareVariantMatchClause(Loc, TI, ParentTI)) 1405 return; 1406 1407 Optional<std::pair<FunctionDecl *, Expr *>> DeclVarData = 1408 Actions.checkOpenMPDeclareVariantFunction( 1409 Ptr, AssociatedFunction.get(), TI, 1410 SourceRange(Loc, Tok.getLocation())); 1411 1412 // Skip last tokens. 1413 while (Tok.isNot(tok::annot_pragma_openmp_end)) 1414 ConsumeAnyToken(); 1415 if (DeclVarData && !TI.Sets.empty()) 1416 Actions.ActOnOpenMPDeclareVariantDirective( 1417 DeclVarData->first, DeclVarData->second, TI, 1418 SourceRange(Loc, Tok.getLocation())); 1419 1420 // Skip the last annot_pragma_openmp_end. 1421 (void)ConsumeAnnotationToken(); 1422 } 1423 1424 bool Parser::parseOMPDeclareVariantMatchClause(SourceLocation Loc, 1425 OMPTraitInfo &TI, 1426 OMPTraitInfo *ParentTI) { 1427 // Parse 'match'. 1428 OpenMPClauseKind CKind = Tok.isAnnotation() 1429 ? OMPC_unknown 1430 : getOpenMPClauseKind(PP.getSpelling(Tok)); 1431 if (CKind != OMPC_match) { 1432 Diag(Tok.getLocation(), diag::err_omp_declare_variant_wrong_clause) 1433 << getOpenMPClauseName(OMPC_match); 1434 while (!SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch)) 1435 ; 1436 // Skip the last annot_pragma_openmp_end. 1437 (void)ConsumeAnnotationToken(); 1438 return true; 1439 } 1440 (void)ConsumeToken(); 1441 // Parse '('. 1442 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 1443 if (T.expectAndConsume(diag::err_expected_lparen_after, 1444 getOpenMPClauseName(OMPC_match).data())) { 1445 while (!SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch)) 1446 ; 1447 // Skip the last annot_pragma_openmp_end. 1448 (void)ConsumeAnnotationToken(); 1449 return true; 1450 } 1451 1452 // Parse inner context selectors. 1453 parseOMPContextSelectors(Loc, TI); 1454 1455 // Parse ')' 1456 (void)T.consumeClose(); 1457 1458 if (!ParentTI) 1459 return false; 1460 1461 // Merge the parent/outer trait info into the one we just parsed and diagnose 1462 // problems. 1463 // TODO: Keep some source location in the TI to provide better diagnostics. 1464 // TODO: Perform some kind of equivalence check on the condition and score 1465 // expressions. 1466 for (const OMPTraitSet &ParentSet : ParentTI->Sets) { 1467 bool MergedSet = false; 1468 for (OMPTraitSet &Set : TI.Sets) { 1469 if (Set.Kind != ParentSet.Kind) 1470 continue; 1471 MergedSet = true; 1472 for (const OMPTraitSelector &ParentSelector : ParentSet.Selectors) { 1473 bool MergedSelector = false; 1474 for (OMPTraitSelector &Selector : Set.Selectors) { 1475 if (Selector.Kind != ParentSelector.Kind) 1476 continue; 1477 MergedSelector = true; 1478 for (const OMPTraitProperty &ParentProperty : 1479 ParentSelector.Properties) { 1480 bool MergedProperty = false; 1481 for (OMPTraitProperty &Property : Selector.Properties) { 1482 // Ignore "equivalent" properties. 1483 if (Property.Kind != ParentProperty.Kind) 1484 continue; 1485 1486 // If the kind is the same but the raw string not, we don't want 1487 // to skip out on the property. 1488 MergedProperty |= Property.RawString == ParentProperty.RawString; 1489 1490 if (Property.RawString == ParentProperty.RawString && 1491 Selector.ScoreOrCondition == ParentSelector.ScoreOrCondition) 1492 continue; 1493 1494 if (Selector.Kind == llvm::omp::TraitSelector::user_condition) { 1495 Diag(Loc, diag::err_omp_declare_variant_nested_user_condition); 1496 } else if (Selector.ScoreOrCondition != 1497 ParentSelector.ScoreOrCondition) { 1498 Diag(Loc, diag::err_omp_declare_variant_duplicate_nested_trait) 1499 << getOpenMPContextTraitPropertyName( 1500 ParentProperty.Kind, ParentProperty.RawString) 1501 << getOpenMPContextTraitSelectorName(ParentSelector.Kind) 1502 << getOpenMPContextTraitSetName(ParentSet.Kind); 1503 } 1504 } 1505 if (!MergedProperty) 1506 Selector.Properties.push_back(ParentProperty); 1507 } 1508 } 1509 if (!MergedSelector) 1510 Set.Selectors.push_back(ParentSelector); 1511 } 1512 } 1513 if (!MergedSet) 1514 TI.Sets.push_back(ParentSet); 1515 } 1516 1517 return false; 1518 } 1519 1520 /// `omp assumes` or `omp begin/end assumes` <clause> [[,]<clause>]... 1521 /// where 1522 /// 1523 /// clause: 1524 /// 'ext_IMPL_DEFINED' 1525 /// 'absent' '(' directive-name [, directive-name]* ')' 1526 /// 'contains' '(' directive-name [, directive-name]* ')' 1527 /// 'holds' '(' scalar-expression ')' 1528 /// 'no_openmp' 1529 /// 'no_openmp_routines' 1530 /// 'no_parallelism' 1531 /// 1532 void Parser::ParseOpenMPAssumesDirective(OpenMPDirectiveKind DKind, 1533 SourceLocation Loc) { 1534 SmallVector<StringRef, 4> Assumptions; 1535 bool SkippedClauses = false; 1536 1537 auto SkipBraces = [&](llvm::StringRef Spelling, bool IssueNote) { 1538 BalancedDelimiterTracker T(*this, tok::l_paren, 1539 tok::annot_pragma_openmp_end); 1540 if (T.expectAndConsume(diag::err_expected_lparen_after, Spelling.data())) 1541 return; 1542 T.skipToEnd(); 1543 if (IssueNote && T.getCloseLocation().isValid()) 1544 Diag(T.getCloseLocation(), 1545 diag::note_omp_assumption_clause_continue_here); 1546 }; 1547 1548 /// Helper to determine which AssumptionClauseMapping (ACM) in the 1549 /// AssumptionClauseMappings table matches \p RawString. The return value is 1550 /// the index of the matching ACM into the table or -1 if there was no match. 1551 auto MatchACMClause = [&](StringRef RawString) { 1552 llvm::StringSwitch<int> SS(RawString); 1553 unsigned ACMIdx = 0; 1554 for (const AssumptionClauseMappingInfo &ACMI : AssumptionClauseMappings) { 1555 if (ACMI.StartsWith) 1556 SS.StartsWith(ACMI.Identifier, ACMIdx++); 1557 else 1558 SS.Case(ACMI.Identifier, ACMIdx++); 1559 } 1560 return SS.Default(-1); 1561 }; 1562 1563 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1564 IdentifierInfo *II = nullptr; 1565 SourceLocation StartLoc = Tok.getLocation(); 1566 int Idx = -1; 1567 if (Tok.isAnyIdentifier()) { 1568 II = Tok.getIdentifierInfo(); 1569 Idx = MatchACMClause(II->getName()); 1570 } 1571 ConsumeAnyToken(); 1572 1573 bool NextIsLPar = Tok.is(tok::l_paren); 1574 // Handle unknown clauses by skipping them. 1575 if (Idx == -1) { 1576 Diag(StartLoc, diag::warn_omp_unknown_assumption_clause_missing_id) 1577 << llvm::omp::getOpenMPDirectiveName(DKind) 1578 << llvm::omp::getAllAssumeClauseOptions() << NextIsLPar; 1579 if (NextIsLPar) 1580 SkipBraces(II ? II->getName() : "", /* IssueNote */ true); 1581 SkippedClauses = true; 1582 continue; 1583 } 1584 const AssumptionClauseMappingInfo &ACMI = AssumptionClauseMappings[Idx]; 1585 if (ACMI.HasDirectiveList || ACMI.HasExpression) { 1586 // TODO: We ignore absent, contains, and holds assumptions for now. We 1587 // also do not verify the content in the parenthesis at all. 1588 SkippedClauses = true; 1589 SkipBraces(II->getName(), /* IssueNote */ false); 1590 continue; 1591 } 1592 1593 if (NextIsLPar) { 1594 Diag(Tok.getLocation(), 1595 diag::warn_omp_unknown_assumption_clause_without_args) 1596 << II; 1597 SkipBraces(II->getName(), /* IssueNote */ true); 1598 } 1599 1600 assert(II && "Expected an identifier clause!"); 1601 StringRef Assumption = II->getName(); 1602 if (ACMI.StartsWith) 1603 Assumption = Assumption.substr(ACMI.Identifier.size()); 1604 Assumptions.push_back(Assumption); 1605 } 1606 1607 Actions.ActOnOpenMPAssumesDirective(Loc, DKind, Assumptions, SkippedClauses); 1608 } 1609 1610 void Parser::ParseOpenMPEndAssumesDirective(SourceLocation Loc) { 1611 if (Actions.isInOpenMPAssumeScope()) 1612 Actions.ActOnOpenMPEndAssumesDirective(); 1613 else 1614 Diag(Loc, diag::err_expected_begin_assumes); 1615 } 1616 1617 /// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'. 1618 /// 1619 /// default-clause: 1620 /// 'default' '(' 'none' | 'shared' | 'firstprivate' ') 1621 /// 1622 /// proc_bind-clause: 1623 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ') 1624 /// 1625 /// device_type-clause: 1626 /// 'device_type' '(' 'host' | 'nohost' | 'any' )' 1627 namespace { 1628 struct SimpleClauseData { 1629 unsigned Type; 1630 SourceLocation Loc; 1631 SourceLocation LOpen; 1632 SourceLocation TypeLoc; 1633 SourceLocation RLoc; 1634 SimpleClauseData(unsigned Type, SourceLocation Loc, SourceLocation LOpen, 1635 SourceLocation TypeLoc, SourceLocation RLoc) 1636 : Type(Type), Loc(Loc), LOpen(LOpen), TypeLoc(TypeLoc), RLoc(RLoc) {} 1637 }; 1638 } // anonymous namespace 1639 1640 static Optional<SimpleClauseData> 1641 parseOpenMPSimpleClause(Parser &P, OpenMPClauseKind Kind) { 1642 const Token &Tok = P.getCurToken(); 1643 SourceLocation Loc = Tok.getLocation(); 1644 SourceLocation LOpen = P.ConsumeToken(); 1645 // Parse '('. 1646 BalancedDelimiterTracker T(P, tok::l_paren, tok::annot_pragma_openmp_end); 1647 if (T.expectAndConsume(diag::err_expected_lparen_after, 1648 getOpenMPClauseName(Kind).data())) 1649 return llvm::None; 1650 1651 unsigned Type = getOpenMPSimpleClauseType( 1652 Kind, Tok.isAnnotation() ? "" : P.getPreprocessor().getSpelling(Tok), 1653 P.getLangOpts().OpenMP); 1654 SourceLocation TypeLoc = Tok.getLocation(); 1655 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 1656 Tok.isNot(tok::annot_pragma_openmp_end)) 1657 P.ConsumeAnyToken(); 1658 1659 // Parse ')'. 1660 SourceLocation RLoc = Tok.getLocation(); 1661 if (!T.consumeClose()) 1662 RLoc = T.getCloseLocation(); 1663 1664 return SimpleClauseData(Type, Loc, LOpen, TypeLoc, RLoc); 1665 } 1666 1667 Parser::DeclGroupPtrTy Parser::ParseOMPDeclareTargetClauses() { 1668 // OpenMP 4.5 syntax with list of entities. 1669 Sema::NamedDeclSetType SameDirectiveDecls; 1670 SmallVector<std::tuple<OMPDeclareTargetDeclAttr::MapTypeTy, SourceLocation, 1671 NamedDecl *>, 1672 4> 1673 DeclareTargetDecls; 1674 OMPDeclareTargetDeclAttr::DevTypeTy DT = OMPDeclareTargetDeclAttr::DT_Any; 1675 SourceLocation DeviceTypeLoc; 1676 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1677 OMPDeclareTargetDeclAttr::MapTypeTy MT = OMPDeclareTargetDeclAttr::MT_To; 1678 if (Tok.is(tok::identifier)) { 1679 IdentifierInfo *II = Tok.getIdentifierInfo(); 1680 StringRef ClauseName = II->getName(); 1681 bool IsDeviceTypeClause = 1682 getLangOpts().OpenMP >= 50 && 1683 getOpenMPClauseKind(ClauseName) == OMPC_device_type; 1684 // Parse 'to|link|device_type' clauses. 1685 if (!OMPDeclareTargetDeclAttr::ConvertStrToMapTypeTy(ClauseName, MT) && 1686 !IsDeviceTypeClause) { 1687 Diag(Tok, diag::err_omp_declare_target_unexpected_clause) 1688 << ClauseName << (getLangOpts().OpenMP >= 50 ? 1 : 0); 1689 break; 1690 } 1691 // Parse 'device_type' clause and go to next clause if any. 1692 if (IsDeviceTypeClause) { 1693 Optional<SimpleClauseData> DevTypeData = 1694 parseOpenMPSimpleClause(*this, OMPC_device_type); 1695 if (DevTypeData.hasValue()) { 1696 if (DeviceTypeLoc.isValid()) { 1697 // We already saw another device_type clause, diagnose it. 1698 Diag(DevTypeData.getValue().Loc, 1699 diag::warn_omp_more_one_device_type_clause); 1700 } 1701 switch (static_cast<OpenMPDeviceType>(DevTypeData.getValue().Type)) { 1702 case OMPC_DEVICE_TYPE_any: 1703 DT = OMPDeclareTargetDeclAttr::DT_Any; 1704 break; 1705 case OMPC_DEVICE_TYPE_host: 1706 DT = OMPDeclareTargetDeclAttr::DT_Host; 1707 break; 1708 case OMPC_DEVICE_TYPE_nohost: 1709 DT = OMPDeclareTargetDeclAttr::DT_NoHost; 1710 break; 1711 case OMPC_DEVICE_TYPE_unknown: 1712 llvm_unreachable("Unexpected device_type"); 1713 } 1714 DeviceTypeLoc = DevTypeData.getValue().Loc; 1715 } 1716 continue; 1717 } 1718 ConsumeToken(); 1719 } 1720 auto &&Callback = [this, MT, &DeclareTargetDecls, &SameDirectiveDecls]( 1721 CXXScopeSpec &SS, DeclarationNameInfo NameInfo) { 1722 NamedDecl *ND = Actions.lookupOpenMPDeclareTargetName( 1723 getCurScope(), SS, NameInfo, SameDirectiveDecls); 1724 if (ND) 1725 DeclareTargetDecls.emplace_back(MT, NameInfo.getLoc(), ND); 1726 }; 1727 if (ParseOpenMPSimpleVarList(OMPD_declare_target, Callback, 1728 /*AllowScopeSpecifier=*/true)) 1729 break; 1730 1731 // Consume optional ','. 1732 if (Tok.is(tok::comma)) 1733 ConsumeToken(); 1734 } 1735 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 1736 ConsumeAnyToken(); 1737 for (auto &MTLocDecl : DeclareTargetDecls) { 1738 OMPDeclareTargetDeclAttr::MapTypeTy MT; 1739 SourceLocation Loc; 1740 NamedDecl *ND; 1741 std::tie(MT, Loc, ND) = MTLocDecl; 1742 // device_type clause is applied only to functions. 1743 Actions.ActOnOpenMPDeclareTargetName( 1744 ND, Loc, MT, isa<VarDecl>(ND) ? OMPDeclareTargetDeclAttr::DT_Any : DT); 1745 } 1746 SmallVector<Decl *, 4> Decls(SameDirectiveDecls.begin(), 1747 SameDirectiveDecls.end()); 1748 if (Decls.empty()) 1749 return DeclGroupPtrTy(); 1750 return Actions.BuildDeclaratorGroup(Decls); 1751 } 1752 1753 void Parser::skipUntilPragmaOpenMPEnd(OpenMPDirectiveKind DKind) { 1754 // The last seen token is annot_pragma_openmp_end - need to check for 1755 // extra tokens. 1756 if (Tok.is(tok::annot_pragma_openmp_end)) 1757 return; 1758 1759 Diag(Tok, diag::warn_omp_extra_tokens_at_eol) 1760 << getOpenMPDirectiveName(DKind); 1761 while (Tok.isNot(tok::annot_pragma_openmp_end)) 1762 ConsumeAnyToken(); 1763 } 1764 1765 void Parser::parseOMPEndDirective(OpenMPDirectiveKind BeginKind, 1766 OpenMPDirectiveKind ExpectedKind, 1767 OpenMPDirectiveKind FoundKind, 1768 SourceLocation BeginLoc, 1769 SourceLocation FoundLoc, 1770 bool SkipUntilOpenMPEnd) { 1771 int DiagSelection = ExpectedKind == OMPD_end_declare_target ? 0 : 1; 1772 1773 if (FoundKind == ExpectedKind) { 1774 ConsumeAnyToken(); 1775 skipUntilPragmaOpenMPEnd(ExpectedKind); 1776 return; 1777 } 1778 1779 Diag(FoundLoc, diag::err_expected_end_declare_target_or_variant) 1780 << DiagSelection; 1781 Diag(BeginLoc, diag::note_matching) 1782 << ("'#pragma omp " + getOpenMPDirectiveName(BeginKind) + "'").str(); 1783 if (SkipUntilOpenMPEnd) 1784 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 1785 } 1786 1787 void Parser::ParseOMPEndDeclareTargetDirective(OpenMPDirectiveKind DKind, 1788 SourceLocation DKLoc) { 1789 parseOMPEndDirective(OMPD_declare_target, OMPD_end_declare_target, DKind, 1790 DKLoc, Tok.getLocation(), 1791 /* SkipUntilOpenMPEnd */ false); 1792 // Skip the last annot_pragma_openmp_end. 1793 if (Tok.is(tok::annot_pragma_openmp_end)) 1794 ConsumeAnnotationToken(); 1795 } 1796 1797 /// Parsing of declarative OpenMP directives. 1798 /// 1799 /// threadprivate-directive: 1800 /// annot_pragma_openmp 'threadprivate' simple-variable-list 1801 /// annot_pragma_openmp_end 1802 /// 1803 /// allocate-directive: 1804 /// annot_pragma_openmp 'allocate' simple-variable-list [<clause>] 1805 /// annot_pragma_openmp_end 1806 /// 1807 /// declare-reduction-directive: 1808 /// annot_pragma_openmp 'declare' 'reduction' [...] 1809 /// annot_pragma_openmp_end 1810 /// 1811 /// declare-mapper-directive: 1812 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':'] 1813 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 1814 /// annot_pragma_openmp_end 1815 /// 1816 /// declare-simd-directive: 1817 /// annot_pragma_openmp 'declare simd' {<clause> [,]} 1818 /// annot_pragma_openmp_end 1819 /// <function declaration/definition> 1820 /// 1821 /// requires directive: 1822 /// annot_pragma_openmp 'requires' <clause> [[[,] <clause>] ... ] 1823 /// annot_pragma_openmp_end 1824 /// 1825 /// assumes directive: 1826 /// annot_pragma_openmp 'assumes' <clause> [[[,] <clause>] ... ] 1827 /// annot_pragma_openmp_end 1828 /// or 1829 /// annot_pragma_openmp 'begin assumes' <clause> [[[,] <clause>] ... ] 1830 /// annot_pragma_openmp 'end assumes' 1831 /// annot_pragma_openmp_end 1832 /// 1833 Parser::DeclGroupPtrTy Parser::ParseOpenMPDeclarativeDirectiveWithExtDecl( 1834 AccessSpecifier &AS, ParsedAttributesWithRange &Attrs, bool Delayed, 1835 DeclSpec::TST TagType, Decl *Tag) { 1836 assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!"); 1837 ParsingOpenMPDirectiveRAII DirScope(*this); 1838 ParenBraceBracketBalancer BalancerRAIIObj(*this); 1839 1840 SourceLocation Loc; 1841 OpenMPDirectiveKind DKind; 1842 if (Delayed) { 1843 TentativeParsingAction TPA(*this); 1844 Loc = ConsumeAnnotationToken(); 1845 DKind = parseOpenMPDirectiveKind(*this); 1846 if (DKind == OMPD_declare_reduction || DKind == OMPD_declare_mapper) { 1847 // Need to delay parsing until completion of the parent class. 1848 TPA.Revert(); 1849 CachedTokens Toks; 1850 unsigned Cnt = 1; 1851 Toks.push_back(Tok); 1852 while (Cnt && Tok.isNot(tok::eof)) { 1853 (void)ConsumeAnyToken(); 1854 if (Tok.is(tok::annot_pragma_openmp)) 1855 ++Cnt; 1856 else if (Tok.is(tok::annot_pragma_openmp_end)) 1857 --Cnt; 1858 Toks.push_back(Tok); 1859 } 1860 // Skip last annot_pragma_openmp_end. 1861 if (Cnt == 0) 1862 (void)ConsumeAnyToken(); 1863 auto *LP = new LateParsedPragma(this, AS); 1864 LP->takeToks(Toks); 1865 getCurrentClass().LateParsedDeclarations.push_back(LP); 1866 return nullptr; 1867 } 1868 TPA.Commit(); 1869 } else { 1870 Loc = ConsumeAnnotationToken(); 1871 DKind = parseOpenMPDirectiveKind(*this); 1872 } 1873 1874 switch (DKind) { 1875 case OMPD_threadprivate: { 1876 ConsumeToken(); 1877 DeclDirectiveListParserHelper Helper(this, DKind); 1878 if (!ParseOpenMPSimpleVarList(DKind, Helper, 1879 /*AllowScopeSpecifier=*/true)) { 1880 skipUntilPragmaOpenMPEnd(DKind); 1881 // Skip the last annot_pragma_openmp_end. 1882 ConsumeAnnotationToken(); 1883 return Actions.ActOnOpenMPThreadprivateDirective(Loc, 1884 Helper.getIdentifiers()); 1885 } 1886 break; 1887 } 1888 case OMPD_allocate: { 1889 ConsumeToken(); 1890 DeclDirectiveListParserHelper Helper(this, DKind); 1891 if (!ParseOpenMPSimpleVarList(DKind, Helper, 1892 /*AllowScopeSpecifier=*/true)) { 1893 SmallVector<OMPClause *, 1> Clauses; 1894 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 1895 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 1896 llvm::omp::Clause_enumSize + 1> 1897 FirstClauses(llvm::omp::Clause_enumSize + 1); 1898 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1899 OpenMPClauseKind CKind = 1900 Tok.isAnnotation() ? OMPC_unknown 1901 : getOpenMPClauseKind(PP.getSpelling(Tok)); 1902 Actions.StartOpenMPClause(CKind); 1903 OMPClause *Clause = ParseOpenMPClause( 1904 OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt()); 1905 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 1906 StopBeforeMatch); 1907 FirstClauses[unsigned(CKind)].setInt(true); 1908 if (Clause != nullptr) 1909 Clauses.push_back(Clause); 1910 if (Tok.is(tok::annot_pragma_openmp_end)) { 1911 Actions.EndOpenMPClause(); 1912 break; 1913 } 1914 // Skip ',' if any. 1915 if (Tok.is(tok::comma)) 1916 ConsumeToken(); 1917 Actions.EndOpenMPClause(); 1918 } 1919 skipUntilPragmaOpenMPEnd(DKind); 1920 } 1921 // Skip the last annot_pragma_openmp_end. 1922 ConsumeAnnotationToken(); 1923 return Actions.ActOnOpenMPAllocateDirective(Loc, Helper.getIdentifiers(), 1924 Clauses); 1925 } 1926 break; 1927 } 1928 case OMPD_requires: { 1929 SourceLocation StartLoc = ConsumeToken(); 1930 SmallVector<OMPClause *, 5> Clauses; 1931 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 1932 llvm::omp::Clause_enumSize + 1> 1933 FirstClauses(llvm::omp::Clause_enumSize + 1); 1934 if (Tok.is(tok::annot_pragma_openmp_end)) { 1935 Diag(Tok, diag::err_omp_expected_clause) 1936 << getOpenMPDirectiveName(OMPD_requires); 1937 break; 1938 } 1939 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1940 OpenMPClauseKind CKind = Tok.isAnnotation() 1941 ? OMPC_unknown 1942 : getOpenMPClauseKind(PP.getSpelling(Tok)); 1943 Actions.StartOpenMPClause(CKind); 1944 OMPClause *Clause = ParseOpenMPClause( 1945 OMPD_requires, CKind, !FirstClauses[unsigned(CKind)].getInt()); 1946 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 1947 StopBeforeMatch); 1948 FirstClauses[unsigned(CKind)].setInt(true); 1949 if (Clause != nullptr) 1950 Clauses.push_back(Clause); 1951 if (Tok.is(tok::annot_pragma_openmp_end)) { 1952 Actions.EndOpenMPClause(); 1953 break; 1954 } 1955 // Skip ',' if any. 1956 if (Tok.is(tok::comma)) 1957 ConsumeToken(); 1958 Actions.EndOpenMPClause(); 1959 } 1960 // Consume final annot_pragma_openmp_end 1961 if (Clauses.empty()) { 1962 Diag(Tok, diag::err_omp_expected_clause) 1963 << getOpenMPDirectiveName(OMPD_requires); 1964 ConsumeAnnotationToken(); 1965 return nullptr; 1966 } 1967 ConsumeAnnotationToken(); 1968 return Actions.ActOnOpenMPRequiresDirective(StartLoc, Clauses); 1969 } 1970 case OMPD_assumes: 1971 case OMPD_begin_assumes: 1972 ParseOpenMPAssumesDirective(DKind, ConsumeToken()); 1973 break; 1974 case OMPD_end_assumes: 1975 ParseOpenMPEndAssumesDirective(ConsumeToken()); 1976 break; 1977 case OMPD_declare_reduction: 1978 ConsumeToken(); 1979 if (DeclGroupPtrTy Res = ParseOpenMPDeclareReductionDirective(AS)) { 1980 skipUntilPragmaOpenMPEnd(OMPD_declare_reduction); 1981 // Skip the last annot_pragma_openmp_end. 1982 ConsumeAnnotationToken(); 1983 return Res; 1984 } 1985 break; 1986 case OMPD_declare_mapper: { 1987 ConsumeToken(); 1988 if (DeclGroupPtrTy Res = ParseOpenMPDeclareMapperDirective(AS)) { 1989 // Skip the last annot_pragma_openmp_end. 1990 ConsumeAnnotationToken(); 1991 return Res; 1992 } 1993 break; 1994 } 1995 case OMPD_begin_declare_variant: { 1996 // The syntax is: 1997 // { #pragma omp begin declare variant clause } 1998 // <function-declaration-or-definition-sequence> 1999 // { #pragma omp end declare variant } 2000 // 2001 ConsumeToken(); 2002 OMPTraitInfo *ParentTI = Actions.getOMPTraitInfoForSurroundingScope(); 2003 ASTContext &ASTCtx = Actions.getASTContext(); 2004 OMPTraitInfo &TI = ASTCtx.getNewOMPTraitInfo(); 2005 if (parseOMPDeclareVariantMatchClause(Loc, TI, ParentTI)) 2006 break; 2007 2008 // Skip last tokens. 2009 skipUntilPragmaOpenMPEnd(OMPD_begin_declare_variant); 2010 2011 ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false); 2012 2013 VariantMatchInfo VMI; 2014 TI.getAsVariantMatchInfo(ASTCtx, VMI); 2015 2016 std::function<void(StringRef)> DiagUnknownTrait = [this, Loc]( 2017 StringRef ISATrait) { 2018 // TODO Track the selector locations in a way that is accessible here to 2019 // improve the diagnostic location. 2020 Diag(Loc, diag::warn_unknown_begin_declare_variant_isa_trait) << ISATrait; 2021 }; 2022 TargetOMPContext OMPCtx(ASTCtx, std::move(DiagUnknownTrait), 2023 /* CurrentFunctionDecl */ nullptr); 2024 2025 if (isVariantApplicableInContext(VMI, OMPCtx, /* DeviceSetOnly */ true)) { 2026 Actions.ActOnOpenMPBeginDeclareVariant(Loc, TI); 2027 break; 2028 } 2029 2030 // Elide all the code till the matching end declare variant was found. 2031 unsigned Nesting = 1; 2032 SourceLocation DKLoc; 2033 OpenMPDirectiveKind DK = OMPD_unknown; 2034 do { 2035 DKLoc = Tok.getLocation(); 2036 DK = parseOpenMPDirectiveKind(*this); 2037 if (DK == OMPD_end_declare_variant) 2038 --Nesting; 2039 else if (DK == OMPD_begin_declare_variant) 2040 ++Nesting; 2041 if (!Nesting || isEofOrEom()) 2042 break; 2043 ConsumeAnyToken(); 2044 } while (true); 2045 2046 parseOMPEndDirective(OMPD_begin_declare_variant, OMPD_end_declare_variant, 2047 DK, Loc, DKLoc, /* SkipUntilOpenMPEnd */ true); 2048 if (isEofOrEom()) 2049 return nullptr; 2050 break; 2051 } 2052 case OMPD_end_declare_variant: { 2053 if (Actions.isInOpenMPDeclareVariantScope()) 2054 Actions.ActOnOpenMPEndDeclareVariant(); 2055 else 2056 Diag(Loc, diag::err_expected_begin_declare_variant); 2057 ConsumeToken(); 2058 break; 2059 } 2060 case OMPD_declare_variant: 2061 case OMPD_declare_simd: { 2062 // The syntax is: 2063 // { #pragma omp declare {simd|variant} } 2064 // <function-declaration-or-definition> 2065 // 2066 CachedTokens Toks; 2067 Toks.push_back(Tok); 2068 ConsumeToken(); 2069 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2070 Toks.push_back(Tok); 2071 ConsumeAnyToken(); 2072 } 2073 Toks.push_back(Tok); 2074 ConsumeAnyToken(); 2075 2076 DeclGroupPtrTy Ptr; 2077 if (Tok.is(tok::annot_pragma_openmp)) { 2078 Ptr = ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs, Delayed, 2079 TagType, Tag); 2080 } else if (Tok.isNot(tok::r_brace) && !isEofOrEom()) { 2081 // Here we expect to see some function declaration. 2082 if (AS == AS_none) { 2083 assert(TagType == DeclSpec::TST_unspecified); 2084 MaybeParseCXX11Attributes(Attrs); 2085 ParsingDeclSpec PDS(*this); 2086 Ptr = ParseExternalDeclaration(Attrs, &PDS); 2087 } else { 2088 Ptr = 2089 ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag); 2090 } 2091 } 2092 if (!Ptr) { 2093 Diag(Loc, diag::err_omp_decl_in_declare_simd_variant) 2094 << (DKind == OMPD_declare_simd ? 0 : 1); 2095 return DeclGroupPtrTy(); 2096 } 2097 if (DKind == OMPD_declare_simd) 2098 return ParseOMPDeclareSimdClauses(Ptr, Toks, Loc); 2099 assert(DKind == OMPD_declare_variant && 2100 "Expected declare variant directive only"); 2101 ParseOMPDeclareVariantClauses(Ptr, Toks, Loc); 2102 return Ptr; 2103 } 2104 case OMPD_declare_target: { 2105 SourceLocation DTLoc = ConsumeAnyToken(); 2106 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 2107 return ParseOMPDeclareTargetClauses(); 2108 } 2109 2110 // Skip the last annot_pragma_openmp_end. 2111 ConsumeAnyToken(); 2112 2113 if (!Actions.ActOnStartOpenMPDeclareTargetDirective(DTLoc)) 2114 return DeclGroupPtrTy(); 2115 2116 ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false); 2117 llvm::SmallVector<Decl *, 4> Decls; 2118 DKind = parseOpenMPDirectiveKind(*this); 2119 while (DKind != OMPD_end_declare_target && Tok.isNot(tok::eof) && 2120 Tok.isNot(tok::r_brace)) { 2121 DeclGroupPtrTy Ptr; 2122 // Here we expect to see some function declaration. 2123 if (AS == AS_none) { 2124 assert(TagType == DeclSpec::TST_unspecified); 2125 MaybeParseCXX11Attributes(Attrs); 2126 ParsingDeclSpec PDS(*this); 2127 Ptr = ParseExternalDeclaration(Attrs, &PDS); 2128 } else { 2129 Ptr = 2130 ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag); 2131 } 2132 if (Ptr) { 2133 DeclGroupRef Ref = Ptr.get(); 2134 Decls.append(Ref.begin(), Ref.end()); 2135 } 2136 if (Tok.isAnnotation() && Tok.is(tok::annot_pragma_openmp)) { 2137 TentativeParsingAction TPA(*this); 2138 ConsumeAnnotationToken(); 2139 DKind = parseOpenMPDirectiveKind(*this); 2140 if (DKind != OMPD_end_declare_target) 2141 TPA.Revert(); 2142 else 2143 TPA.Commit(); 2144 } 2145 } 2146 2147 ParseOMPEndDeclareTargetDirective(DKind, DTLoc); 2148 Actions.ActOnFinishOpenMPDeclareTargetDirective(); 2149 return Actions.BuildDeclaratorGroup(Decls); 2150 } 2151 case OMPD_unknown: 2152 Diag(Tok, diag::err_omp_unknown_directive); 2153 break; 2154 case OMPD_parallel: 2155 case OMPD_simd: 2156 case OMPD_task: 2157 case OMPD_taskyield: 2158 case OMPD_barrier: 2159 case OMPD_taskwait: 2160 case OMPD_taskgroup: 2161 case OMPD_flush: 2162 case OMPD_depobj: 2163 case OMPD_scan: 2164 case OMPD_for: 2165 case OMPD_for_simd: 2166 case OMPD_sections: 2167 case OMPD_section: 2168 case OMPD_single: 2169 case OMPD_master: 2170 case OMPD_ordered: 2171 case OMPD_critical: 2172 case OMPD_parallel_for: 2173 case OMPD_parallel_for_simd: 2174 case OMPD_parallel_sections: 2175 case OMPD_parallel_master: 2176 case OMPD_atomic: 2177 case OMPD_target: 2178 case OMPD_teams: 2179 case OMPD_cancellation_point: 2180 case OMPD_cancel: 2181 case OMPD_target_data: 2182 case OMPD_target_enter_data: 2183 case OMPD_target_exit_data: 2184 case OMPD_target_parallel: 2185 case OMPD_target_parallel_for: 2186 case OMPD_taskloop: 2187 case OMPD_taskloop_simd: 2188 case OMPD_master_taskloop: 2189 case OMPD_master_taskloop_simd: 2190 case OMPD_parallel_master_taskloop: 2191 case OMPD_parallel_master_taskloop_simd: 2192 case OMPD_distribute: 2193 case OMPD_end_declare_target: 2194 case OMPD_target_update: 2195 case OMPD_distribute_parallel_for: 2196 case OMPD_distribute_parallel_for_simd: 2197 case OMPD_distribute_simd: 2198 case OMPD_target_parallel_for_simd: 2199 case OMPD_target_simd: 2200 case OMPD_teams_distribute: 2201 case OMPD_teams_distribute_simd: 2202 case OMPD_teams_distribute_parallel_for_simd: 2203 case OMPD_teams_distribute_parallel_for: 2204 case OMPD_target_teams: 2205 case OMPD_target_teams_distribute: 2206 case OMPD_target_teams_distribute_parallel_for: 2207 case OMPD_target_teams_distribute_parallel_for_simd: 2208 case OMPD_target_teams_distribute_simd: 2209 Diag(Tok, diag::err_omp_unexpected_directive) 2210 << 1 << getOpenMPDirectiveName(DKind); 2211 break; 2212 default: 2213 break; 2214 } 2215 while (Tok.isNot(tok::annot_pragma_openmp_end)) 2216 ConsumeAnyToken(); 2217 ConsumeAnyToken(); 2218 return nullptr; 2219 } 2220 2221 /// Parsing of declarative or executable OpenMP directives. 2222 /// 2223 /// threadprivate-directive: 2224 /// annot_pragma_openmp 'threadprivate' simple-variable-list 2225 /// annot_pragma_openmp_end 2226 /// 2227 /// allocate-directive: 2228 /// annot_pragma_openmp 'allocate' simple-variable-list 2229 /// annot_pragma_openmp_end 2230 /// 2231 /// declare-reduction-directive: 2232 /// annot_pragma_openmp 'declare' 'reduction' '(' <reduction_id> ':' 2233 /// <type> {',' <type>} ':' <expression> ')' ['initializer' '(' 2234 /// ('omp_priv' '=' <expression>|<function_call>) ')'] 2235 /// annot_pragma_openmp_end 2236 /// 2237 /// declare-mapper-directive: 2238 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':'] 2239 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 2240 /// annot_pragma_openmp_end 2241 /// 2242 /// executable-directive: 2243 /// annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' | 2244 /// 'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] | 2245 /// 'parallel for' | 'parallel sections' | 'parallel master' | 'task' | 2246 /// 'taskyield' | 'barrier' | 'taskwait' | 'flush' | 'ordered' | 2247 /// 'atomic' | 'for simd' | 'parallel for simd' | 'target' | 'target 2248 /// data' | 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' | 2249 /// 'master taskloop' | 'master taskloop simd' | 'parallel master 2250 /// taskloop' | 'parallel master taskloop simd' | 'distribute' | 'target 2251 /// enter data' | 'target exit data' | 'target parallel' | 'target 2252 /// parallel for' | 'target update' | 'distribute parallel for' | 2253 /// 'distribute paralle for simd' | 'distribute simd' | 'target parallel 2254 /// for simd' | 'target simd' | 'teams distribute' | 'teams distribute 2255 /// simd' | 'teams distribute parallel for simd' | 'teams distribute 2256 /// parallel for' | 'target teams' | 'target teams distribute' | 'target 2257 /// teams distribute parallel for' | 'target teams distribute parallel 2258 /// for simd' | 'target teams distribute simd' {clause} 2259 /// annot_pragma_openmp_end 2260 /// 2261 StmtResult 2262 Parser::ParseOpenMPDeclarativeOrExecutableDirective(ParsedStmtContext StmtCtx) { 2263 assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!"); 2264 ParsingOpenMPDirectiveRAII DirScope(*this); 2265 ParenBraceBracketBalancer BalancerRAIIObj(*this); 2266 SmallVector<OMPClause *, 5> Clauses; 2267 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 2268 llvm::omp::Clause_enumSize + 1> 2269 FirstClauses(llvm::omp::Clause_enumSize + 1); 2270 unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope | 2271 Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope; 2272 SourceLocation Loc = ConsumeAnnotationToken(), EndLoc; 2273 OpenMPDirectiveKind DKind = parseOpenMPDirectiveKind(*this); 2274 OpenMPDirectiveKind CancelRegion = OMPD_unknown; 2275 // Name of critical directive. 2276 DeclarationNameInfo DirName; 2277 StmtResult Directive = StmtError(); 2278 bool HasAssociatedStatement = true; 2279 2280 switch (DKind) { 2281 case OMPD_threadprivate: { 2282 // FIXME: Should this be permitted in C++? 2283 if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) == 2284 ParsedStmtContext()) { 2285 Diag(Tok, diag::err_omp_immediate_directive) 2286 << getOpenMPDirectiveName(DKind) << 0; 2287 } 2288 ConsumeToken(); 2289 DeclDirectiveListParserHelper Helper(this, DKind); 2290 if (!ParseOpenMPSimpleVarList(DKind, Helper, 2291 /*AllowScopeSpecifier=*/false)) { 2292 skipUntilPragmaOpenMPEnd(DKind); 2293 DeclGroupPtrTy Res = Actions.ActOnOpenMPThreadprivateDirective( 2294 Loc, Helper.getIdentifiers()); 2295 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2296 } 2297 SkipUntil(tok::annot_pragma_openmp_end); 2298 break; 2299 } 2300 case OMPD_allocate: { 2301 // FIXME: Should this be permitted in C++? 2302 if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) == 2303 ParsedStmtContext()) { 2304 Diag(Tok, diag::err_omp_immediate_directive) 2305 << getOpenMPDirectiveName(DKind) << 0; 2306 } 2307 ConsumeToken(); 2308 DeclDirectiveListParserHelper Helper(this, DKind); 2309 if (!ParseOpenMPSimpleVarList(DKind, Helper, 2310 /*AllowScopeSpecifier=*/false)) { 2311 SmallVector<OMPClause *, 1> Clauses; 2312 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 2313 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 2314 llvm::omp::Clause_enumSize + 1> 2315 FirstClauses(llvm::omp::Clause_enumSize + 1); 2316 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2317 OpenMPClauseKind CKind = 2318 Tok.isAnnotation() ? OMPC_unknown 2319 : getOpenMPClauseKind(PP.getSpelling(Tok)); 2320 Actions.StartOpenMPClause(CKind); 2321 OMPClause *Clause = ParseOpenMPClause( 2322 OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt()); 2323 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 2324 StopBeforeMatch); 2325 FirstClauses[unsigned(CKind)].setInt(true); 2326 if (Clause != nullptr) 2327 Clauses.push_back(Clause); 2328 if (Tok.is(tok::annot_pragma_openmp_end)) { 2329 Actions.EndOpenMPClause(); 2330 break; 2331 } 2332 // Skip ',' if any. 2333 if (Tok.is(tok::comma)) 2334 ConsumeToken(); 2335 Actions.EndOpenMPClause(); 2336 } 2337 skipUntilPragmaOpenMPEnd(DKind); 2338 } 2339 DeclGroupPtrTy Res = Actions.ActOnOpenMPAllocateDirective( 2340 Loc, Helper.getIdentifiers(), Clauses); 2341 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2342 } 2343 SkipUntil(tok::annot_pragma_openmp_end); 2344 break; 2345 } 2346 case OMPD_declare_reduction: 2347 ConsumeToken(); 2348 if (DeclGroupPtrTy Res = 2349 ParseOpenMPDeclareReductionDirective(/*AS=*/AS_none)) { 2350 skipUntilPragmaOpenMPEnd(OMPD_declare_reduction); 2351 ConsumeAnyToken(); 2352 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2353 } else { 2354 SkipUntil(tok::annot_pragma_openmp_end); 2355 } 2356 break; 2357 case OMPD_declare_mapper: { 2358 ConsumeToken(); 2359 if (DeclGroupPtrTy Res = 2360 ParseOpenMPDeclareMapperDirective(/*AS=*/AS_none)) { 2361 // Skip the last annot_pragma_openmp_end. 2362 ConsumeAnnotationToken(); 2363 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2364 } else { 2365 SkipUntil(tok::annot_pragma_openmp_end); 2366 } 2367 break; 2368 } 2369 case OMPD_flush: 2370 case OMPD_depobj: 2371 case OMPD_scan: 2372 case OMPD_taskyield: 2373 case OMPD_barrier: 2374 case OMPD_taskwait: 2375 case OMPD_cancellation_point: 2376 case OMPD_cancel: 2377 case OMPD_target_enter_data: 2378 case OMPD_target_exit_data: 2379 case OMPD_target_update: 2380 if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) == 2381 ParsedStmtContext()) { 2382 Diag(Tok, diag::err_omp_immediate_directive) 2383 << getOpenMPDirectiveName(DKind) << 0; 2384 } 2385 HasAssociatedStatement = false; 2386 // Fall through for further analysis. 2387 LLVM_FALLTHROUGH; 2388 case OMPD_parallel: 2389 case OMPD_simd: 2390 case OMPD_for: 2391 case OMPD_for_simd: 2392 case OMPD_sections: 2393 case OMPD_single: 2394 case OMPD_section: 2395 case OMPD_master: 2396 case OMPD_critical: 2397 case OMPD_parallel_for: 2398 case OMPD_parallel_for_simd: 2399 case OMPD_parallel_sections: 2400 case OMPD_parallel_master: 2401 case OMPD_task: 2402 case OMPD_ordered: 2403 case OMPD_atomic: 2404 case OMPD_target: 2405 case OMPD_teams: 2406 case OMPD_taskgroup: 2407 case OMPD_target_data: 2408 case OMPD_target_parallel: 2409 case OMPD_target_parallel_for: 2410 case OMPD_taskloop: 2411 case OMPD_taskloop_simd: 2412 case OMPD_master_taskloop: 2413 case OMPD_master_taskloop_simd: 2414 case OMPD_parallel_master_taskloop: 2415 case OMPD_parallel_master_taskloop_simd: 2416 case OMPD_distribute: 2417 case OMPD_distribute_parallel_for: 2418 case OMPD_distribute_parallel_for_simd: 2419 case OMPD_distribute_simd: 2420 case OMPD_target_parallel_for_simd: 2421 case OMPD_target_simd: 2422 case OMPD_teams_distribute: 2423 case OMPD_teams_distribute_simd: 2424 case OMPD_teams_distribute_parallel_for_simd: 2425 case OMPD_teams_distribute_parallel_for: 2426 case OMPD_target_teams: 2427 case OMPD_target_teams_distribute: 2428 case OMPD_target_teams_distribute_parallel_for: 2429 case OMPD_target_teams_distribute_parallel_for_simd: 2430 case OMPD_target_teams_distribute_simd: { 2431 // Special processing for flush and depobj clauses. 2432 Token ImplicitTok; 2433 bool ImplicitClauseAllowed = false; 2434 if (DKind == OMPD_flush || DKind == OMPD_depobj) { 2435 ImplicitTok = Tok; 2436 ImplicitClauseAllowed = true; 2437 } 2438 ConsumeToken(); 2439 // Parse directive name of the 'critical' directive if any. 2440 if (DKind == OMPD_critical) { 2441 BalancedDelimiterTracker T(*this, tok::l_paren, 2442 tok::annot_pragma_openmp_end); 2443 if (!T.consumeOpen()) { 2444 if (Tok.isAnyIdentifier()) { 2445 DirName = 2446 DeclarationNameInfo(Tok.getIdentifierInfo(), Tok.getLocation()); 2447 ConsumeAnyToken(); 2448 } else { 2449 Diag(Tok, diag::err_omp_expected_identifier_for_critical); 2450 } 2451 T.consumeClose(); 2452 } 2453 } else if (DKind == OMPD_cancellation_point || DKind == OMPD_cancel) { 2454 CancelRegion = parseOpenMPDirectiveKind(*this); 2455 if (Tok.isNot(tok::annot_pragma_openmp_end)) 2456 ConsumeToken(); 2457 } 2458 2459 if (isOpenMPLoopDirective(DKind)) 2460 ScopeFlags |= Scope::OpenMPLoopDirectiveScope; 2461 if (isOpenMPSimdDirective(DKind)) 2462 ScopeFlags |= Scope::OpenMPSimdDirectiveScope; 2463 ParseScope OMPDirectiveScope(this, ScopeFlags); 2464 Actions.StartOpenMPDSABlock(DKind, DirName, Actions.getCurScope(), Loc); 2465 2466 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2467 bool HasImplicitClause = false; 2468 if (ImplicitClauseAllowed && Tok.is(tok::l_paren)) { 2469 HasImplicitClause = true; 2470 // Push copy of the current token back to stream to properly parse 2471 // pseudo-clause OMPFlushClause or OMPDepobjClause. 2472 PP.EnterToken(Tok, /*IsReinject*/ true); 2473 PP.EnterToken(ImplicitTok, /*IsReinject*/ true); 2474 ConsumeAnyToken(); 2475 } 2476 OpenMPClauseKind CKind = Tok.isAnnotation() 2477 ? OMPC_unknown 2478 : getOpenMPClauseKind(PP.getSpelling(Tok)); 2479 if (HasImplicitClause) { 2480 assert(CKind == OMPC_unknown && "Must be unknown implicit clause."); 2481 if (DKind == OMPD_flush) { 2482 CKind = OMPC_flush; 2483 } else { 2484 assert(DKind == OMPD_depobj && 2485 "Expected flush or depobj directives."); 2486 CKind = OMPC_depobj; 2487 } 2488 } 2489 // No more implicit clauses allowed. 2490 ImplicitClauseAllowed = false; 2491 Actions.StartOpenMPClause(CKind); 2492 HasImplicitClause = false; 2493 OMPClause *Clause = ParseOpenMPClause( 2494 DKind, CKind, !FirstClauses[unsigned(CKind)].getInt()); 2495 FirstClauses[unsigned(CKind)].setInt(true); 2496 if (Clause) { 2497 FirstClauses[unsigned(CKind)].setPointer(Clause); 2498 Clauses.push_back(Clause); 2499 } 2500 2501 // Skip ',' if any. 2502 if (Tok.is(tok::comma)) 2503 ConsumeToken(); 2504 Actions.EndOpenMPClause(); 2505 } 2506 // End location of the directive. 2507 EndLoc = Tok.getLocation(); 2508 // Consume final annot_pragma_openmp_end. 2509 ConsumeAnnotationToken(); 2510 2511 // OpenMP [2.13.8, ordered Construct, Syntax] 2512 // If the depend clause is specified, the ordered construct is a stand-alone 2513 // directive. 2514 if (DKind == OMPD_ordered && FirstClauses[unsigned(OMPC_depend)].getInt()) { 2515 if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) == 2516 ParsedStmtContext()) { 2517 Diag(Loc, diag::err_omp_immediate_directive) 2518 << getOpenMPDirectiveName(DKind) << 1 2519 << getOpenMPClauseName(OMPC_depend); 2520 } 2521 HasAssociatedStatement = false; 2522 } 2523 2524 StmtResult AssociatedStmt; 2525 if (HasAssociatedStatement) { 2526 // The body is a block scope like in Lambdas and Blocks. 2527 Actions.ActOnOpenMPRegionStart(DKind, getCurScope()); 2528 // FIXME: We create a bogus CompoundStmt scope to hold the contents of 2529 // the captured region. Code elsewhere assumes that any FunctionScopeInfo 2530 // should have at least one compound statement scope within it. 2531 ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false); 2532 AssociatedStmt = (Sema::CompoundScopeRAII(Actions), ParseStatement()); 2533 AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses); 2534 } else if (DKind == OMPD_target_update || DKind == OMPD_target_enter_data || 2535 DKind == OMPD_target_exit_data) { 2536 Actions.ActOnOpenMPRegionStart(DKind, getCurScope()); 2537 AssociatedStmt = (Sema::CompoundScopeRAII(Actions), 2538 Actions.ActOnCompoundStmt(Loc, Loc, llvm::None, 2539 /*isStmtExpr=*/false)); 2540 AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses); 2541 } 2542 Directive = Actions.ActOnOpenMPExecutableDirective( 2543 DKind, DirName, CancelRegion, Clauses, AssociatedStmt.get(), Loc, 2544 EndLoc); 2545 2546 // Exit scope. 2547 Actions.EndOpenMPDSABlock(Directive.get()); 2548 OMPDirectiveScope.Exit(); 2549 break; 2550 } 2551 case OMPD_declare_simd: 2552 case OMPD_declare_target: 2553 case OMPD_end_declare_target: 2554 case OMPD_requires: 2555 case OMPD_begin_declare_variant: 2556 case OMPD_end_declare_variant: 2557 case OMPD_declare_variant: 2558 Diag(Tok, diag::err_omp_unexpected_directive) 2559 << 1 << getOpenMPDirectiveName(DKind); 2560 SkipUntil(tok::annot_pragma_openmp_end); 2561 break; 2562 case OMPD_unknown: 2563 default: 2564 Diag(Tok, diag::err_omp_unknown_directive); 2565 SkipUntil(tok::annot_pragma_openmp_end); 2566 break; 2567 } 2568 return Directive; 2569 } 2570 2571 // Parses simple list: 2572 // simple-variable-list: 2573 // '(' id-expression {, id-expression} ')' 2574 // 2575 bool Parser::ParseOpenMPSimpleVarList( 2576 OpenMPDirectiveKind Kind, 2577 const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)> 2578 &Callback, 2579 bool AllowScopeSpecifier) { 2580 // Parse '('. 2581 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2582 if (T.expectAndConsume(diag::err_expected_lparen_after, 2583 getOpenMPDirectiveName(Kind).data())) 2584 return true; 2585 bool IsCorrect = true; 2586 bool NoIdentIsFound = true; 2587 2588 // Read tokens while ')' or annot_pragma_openmp_end is not found. 2589 while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) { 2590 CXXScopeSpec SS; 2591 UnqualifiedId Name; 2592 // Read var name. 2593 Token PrevTok = Tok; 2594 NoIdentIsFound = false; 2595 2596 if (AllowScopeSpecifier && getLangOpts().CPlusPlus && 2597 ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr, 2598 /*ObjectHadErrors=*/false, false)) { 2599 IsCorrect = false; 2600 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2601 StopBeforeMatch); 2602 } else if (ParseUnqualifiedId(SS, /*ObjectType=*/nullptr, 2603 /*ObjectHadErrors=*/false, false, false, 2604 false, false, nullptr, Name)) { 2605 IsCorrect = false; 2606 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2607 StopBeforeMatch); 2608 } else if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren) && 2609 Tok.isNot(tok::annot_pragma_openmp_end)) { 2610 IsCorrect = false; 2611 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2612 StopBeforeMatch); 2613 Diag(PrevTok.getLocation(), diag::err_expected) 2614 << tok::identifier 2615 << SourceRange(PrevTok.getLocation(), PrevTokLocation); 2616 } else { 2617 Callback(SS, Actions.GetNameFromUnqualifiedId(Name)); 2618 } 2619 // Consume ','. 2620 if (Tok.is(tok::comma)) { 2621 ConsumeToken(); 2622 } 2623 } 2624 2625 if (NoIdentIsFound) { 2626 Diag(Tok, diag::err_expected) << tok::identifier; 2627 IsCorrect = false; 2628 } 2629 2630 // Parse ')'. 2631 IsCorrect = !T.consumeClose() && IsCorrect; 2632 2633 return !IsCorrect; 2634 } 2635 2636 OMPClause *Parser::ParseOpenMPUsesAllocatorClause(OpenMPDirectiveKind DKind) { 2637 SourceLocation Loc = Tok.getLocation(); 2638 ConsumeAnyToken(); 2639 2640 // Parse '('. 2641 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2642 if (T.expectAndConsume(diag::err_expected_lparen_after, "uses_allocator")) 2643 return nullptr; 2644 SmallVector<Sema::UsesAllocatorsData, 4> Data; 2645 do { 2646 ExprResult Allocator = ParseCXXIdExpression(); 2647 if (Allocator.isInvalid()) { 2648 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2649 StopBeforeMatch); 2650 break; 2651 } 2652 Sema::UsesAllocatorsData &D = Data.emplace_back(); 2653 D.Allocator = Allocator.get(); 2654 if (Tok.is(tok::l_paren)) { 2655 BalancedDelimiterTracker T(*this, tok::l_paren, 2656 tok::annot_pragma_openmp_end); 2657 T.consumeOpen(); 2658 ExprResult AllocatorTraits = ParseCXXIdExpression(); 2659 T.consumeClose(); 2660 if (AllocatorTraits.isInvalid()) { 2661 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2662 StopBeforeMatch); 2663 break; 2664 } 2665 D.AllocatorTraits = AllocatorTraits.get(); 2666 D.LParenLoc = T.getOpenLocation(); 2667 D.RParenLoc = T.getCloseLocation(); 2668 } 2669 if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren)) 2670 Diag(Tok, diag::err_omp_expected_punc) << "uses_allocators" << 0; 2671 // Parse ',' 2672 if (Tok.is(tok::comma)) 2673 ConsumeAnyToken(); 2674 } while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)); 2675 T.consumeClose(); 2676 return Actions.ActOnOpenMPUsesAllocatorClause(Loc, T.getOpenLocation(), 2677 T.getCloseLocation(), Data); 2678 } 2679 2680 /// Parsing of OpenMP clauses. 2681 /// 2682 /// clause: 2683 /// if-clause | final-clause | num_threads-clause | safelen-clause | 2684 /// default-clause | private-clause | firstprivate-clause | shared-clause 2685 /// | linear-clause | aligned-clause | collapse-clause | 2686 /// lastprivate-clause | reduction-clause | proc_bind-clause | 2687 /// schedule-clause | copyin-clause | copyprivate-clause | untied-clause | 2688 /// mergeable-clause | flush-clause | read-clause | write-clause | 2689 /// update-clause | capture-clause | seq_cst-clause | device-clause | 2690 /// simdlen-clause | threads-clause | simd-clause | num_teams-clause | 2691 /// thread_limit-clause | priority-clause | grainsize-clause | 2692 /// nogroup-clause | num_tasks-clause | hint-clause | to-clause | 2693 /// from-clause | is_device_ptr-clause | task_reduction-clause | 2694 /// in_reduction-clause | allocator-clause | allocate-clause | 2695 /// acq_rel-clause | acquire-clause | release-clause | relaxed-clause | 2696 /// depobj-clause | destroy-clause | detach-clause | inclusive-clause | 2697 /// exclusive-clause | uses_allocators-clause | use_device_addr-clause 2698 /// 2699 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind, 2700 OpenMPClauseKind CKind, bool FirstClause) { 2701 OMPClauseKind = CKind; 2702 OMPClause *Clause = nullptr; 2703 bool ErrorFound = false; 2704 bool WrongDirective = false; 2705 // Check if clause is allowed for the given directive. 2706 if (CKind != OMPC_unknown && 2707 !isAllowedClauseForDirective(DKind, CKind, getLangOpts().OpenMP)) { 2708 Diag(Tok, diag::err_omp_unexpected_clause) 2709 << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind); 2710 ErrorFound = true; 2711 WrongDirective = true; 2712 } 2713 2714 switch (CKind) { 2715 case OMPC_final: 2716 case OMPC_num_threads: 2717 case OMPC_safelen: 2718 case OMPC_simdlen: 2719 case OMPC_collapse: 2720 case OMPC_ordered: 2721 case OMPC_num_teams: 2722 case OMPC_thread_limit: 2723 case OMPC_priority: 2724 case OMPC_grainsize: 2725 case OMPC_num_tasks: 2726 case OMPC_hint: 2727 case OMPC_allocator: 2728 case OMPC_depobj: 2729 case OMPC_detach: 2730 // OpenMP [2.5, Restrictions] 2731 // At most one num_threads clause can appear on the directive. 2732 // OpenMP [2.8.1, simd construct, Restrictions] 2733 // Only one safelen clause can appear on a simd directive. 2734 // Only one simdlen clause can appear on a simd directive. 2735 // Only one collapse clause can appear on a simd directive. 2736 // OpenMP [2.11.1, task Construct, Restrictions] 2737 // At most one if clause can appear on the directive. 2738 // At most one final clause can appear on the directive. 2739 // OpenMP [teams Construct, Restrictions] 2740 // At most one num_teams clause can appear on the directive. 2741 // At most one thread_limit clause can appear on the directive. 2742 // OpenMP [2.9.1, task Construct, Restrictions] 2743 // At most one priority clause can appear on the directive. 2744 // OpenMP [2.9.2, taskloop Construct, Restrictions] 2745 // At most one grainsize clause can appear on the directive. 2746 // OpenMP [2.9.2, taskloop Construct, Restrictions] 2747 // At most one num_tasks clause can appear on the directive. 2748 // OpenMP [2.11.3, allocate Directive, Restrictions] 2749 // At most one allocator clause can appear on the directive. 2750 // OpenMP 5.0, 2.10.1 task Construct, Restrictions. 2751 // At most one detach clause can appear on the directive. 2752 if (!FirstClause) { 2753 Diag(Tok, diag::err_omp_more_one_clause) 2754 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2755 ErrorFound = true; 2756 } 2757 2758 if (CKind == OMPC_ordered && PP.LookAhead(/*N=*/0).isNot(tok::l_paren)) 2759 Clause = ParseOpenMPClause(CKind, WrongDirective); 2760 else 2761 Clause = ParseOpenMPSingleExprClause(CKind, WrongDirective); 2762 break; 2763 case OMPC_default: 2764 case OMPC_proc_bind: 2765 case OMPC_atomic_default_mem_order: 2766 case OMPC_order: 2767 // OpenMP [2.14.3.1, Restrictions] 2768 // Only a single default clause may be specified on a parallel, task or 2769 // teams directive. 2770 // OpenMP [2.5, parallel Construct, Restrictions] 2771 // At most one proc_bind clause can appear on the directive. 2772 // OpenMP [5.0, Requires directive, Restrictions] 2773 // At most one atomic_default_mem_order clause can appear 2774 // on the directive 2775 if (!FirstClause && CKind != OMPC_order) { 2776 Diag(Tok, diag::err_omp_more_one_clause) 2777 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2778 ErrorFound = true; 2779 } 2780 2781 Clause = ParseOpenMPSimpleClause(CKind, WrongDirective); 2782 break; 2783 case OMPC_device: 2784 case OMPC_schedule: 2785 case OMPC_dist_schedule: 2786 case OMPC_defaultmap: 2787 // OpenMP [2.7.1, Restrictions, p. 3] 2788 // Only one schedule clause can appear on a loop directive. 2789 // OpenMP 4.5 [2.10.4, Restrictions, p. 106] 2790 // At most one defaultmap clause can appear on the directive. 2791 // OpenMP 5.0 [2.12.5, target construct, Restrictions] 2792 // At most one device clause can appear on the directive. 2793 if ((getLangOpts().OpenMP < 50 || CKind != OMPC_defaultmap) && 2794 !FirstClause) { 2795 Diag(Tok, diag::err_omp_more_one_clause) 2796 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2797 ErrorFound = true; 2798 } 2799 LLVM_FALLTHROUGH; 2800 case OMPC_if: 2801 Clause = ParseOpenMPSingleExprWithArgClause(DKind, CKind, WrongDirective); 2802 break; 2803 case OMPC_nowait: 2804 case OMPC_untied: 2805 case OMPC_mergeable: 2806 case OMPC_read: 2807 case OMPC_write: 2808 case OMPC_capture: 2809 case OMPC_seq_cst: 2810 case OMPC_acq_rel: 2811 case OMPC_acquire: 2812 case OMPC_release: 2813 case OMPC_relaxed: 2814 case OMPC_threads: 2815 case OMPC_simd: 2816 case OMPC_nogroup: 2817 case OMPC_unified_address: 2818 case OMPC_unified_shared_memory: 2819 case OMPC_reverse_offload: 2820 case OMPC_dynamic_allocators: 2821 case OMPC_destroy: 2822 // OpenMP [2.7.1, Restrictions, p. 9] 2823 // Only one ordered clause can appear on a loop directive. 2824 // OpenMP [2.7.1, Restrictions, C/C++, p. 4] 2825 // Only one nowait clause can appear on a for directive. 2826 // OpenMP [5.0, Requires directive, Restrictions] 2827 // Each of the requires clauses can appear at most once on the directive. 2828 if (!FirstClause) { 2829 Diag(Tok, diag::err_omp_more_one_clause) 2830 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2831 ErrorFound = true; 2832 } 2833 2834 Clause = ParseOpenMPClause(CKind, WrongDirective); 2835 break; 2836 case OMPC_update: 2837 if (!FirstClause) { 2838 Diag(Tok, diag::err_omp_more_one_clause) 2839 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2840 ErrorFound = true; 2841 } 2842 2843 Clause = (DKind == OMPD_depobj) 2844 ? ParseOpenMPSimpleClause(CKind, WrongDirective) 2845 : ParseOpenMPClause(CKind, WrongDirective); 2846 break; 2847 case OMPC_private: 2848 case OMPC_firstprivate: 2849 case OMPC_lastprivate: 2850 case OMPC_shared: 2851 case OMPC_reduction: 2852 case OMPC_task_reduction: 2853 case OMPC_in_reduction: 2854 case OMPC_linear: 2855 case OMPC_aligned: 2856 case OMPC_copyin: 2857 case OMPC_copyprivate: 2858 case OMPC_flush: 2859 case OMPC_depend: 2860 case OMPC_map: 2861 case OMPC_to: 2862 case OMPC_from: 2863 case OMPC_use_device_ptr: 2864 case OMPC_use_device_addr: 2865 case OMPC_is_device_ptr: 2866 case OMPC_allocate: 2867 case OMPC_nontemporal: 2868 case OMPC_inclusive: 2869 case OMPC_exclusive: 2870 case OMPC_affinity: 2871 Clause = ParseOpenMPVarListClause(DKind, CKind, WrongDirective); 2872 break; 2873 case OMPC_uses_allocators: 2874 Clause = ParseOpenMPUsesAllocatorClause(DKind); 2875 break; 2876 case OMPC_device_type: 2877 case OMPC_unknown: 2878 skipUntilPragmaOpenMPEnd(DKind); 2879 break; 2880 case OMPC_threadprivate: 2881 case OMPC_uniform: 2882 case OMPC_match: 2883 if (!WrongDirective) 2884 Diag(Tok, diag::err_omp_unexpected_clause) 2885 << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind); 2886 SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch); 2887 break; 2888 default: 2889 break; 2890 } 2891 return ErrorFound ? nullptr : Clause; 2892 } 2893 2894 /// Parses simple expression in parens for single-expression clauses of OpenMP 2895 /// constructs. 2896 /// \param RLoc Returned location of right paren. 2897 ExprResult Parser::ParseOpenMPParensExpr(StringRef ClauseName, 2898 SourceLocation &RLoc, 2899 bool IsAddressOfOperand) { 2900 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2901 if (T.expectAndConsume(diag::err_expected_lparen_after, ClauseName.data())) 2902 return ExprError(); 2903 2904 SourceLocation ELoc = Tok.getLocation(); 2905 ExprResult LHS( 2906 ParseCastExpression(AnyCastExpr, IsAddressOfOperand, NotTypeCast)); 2907 ExprResult Val(ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 2908 Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false); 2909 2910 // Parse ')'. 2911 RLoc = Tok.getLocation(); 2912 if (!T.consumeClose()) 2913 RLoc = T.getCloseLocation(); 2914 2915 return Val; 2916 } 2917 2918 /// Parsing of OpenMP clauses with single expressions like 'final', 2919 /// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams', 2920 /// 'thread_limit', 'simdlen', 'priority', 'grainsize', 'num_tasks', 'hint' or 2921 /// 'detach'. 2922 /// 2923 /// final-clause: 2924 /// 'final' '(' expression ')' 2925 /// 2926 /// num_threads-clause: 2927 /// 'num_threads' '(' expression ')' 2928 /// 2929 /// safelen-clause: 2930 /// 'safelen' '(' expression ')' 2931 /// 2932 /// simdlen-clause: 2933 /// 'simdlen' '(' expression ')' 2934 /// 2935 /// collapse-clause: 2936 /// 'collapse' '(' expression ')' 2937 /// 2938 /// priority-clause: 2939 /// 'priority' '(' expression ')' 2940 /// 2941 /// grainsize-clause: 2942 /// 'grainsize' '(' expression ')' 2943 /// 2944 /// num_tasks-clause: 2945 /// 'num_tasks' '(' expression ')' 2946 /// 2947 /// hint-clause: 2948 /// 'hint' '(' expression ')' 2949 /// 2950 /// allocator-clause: 2951 /// 'allocator' '(' expression ')' 2952 /// 2953 /// detach-clause: 2954 /// 'detach' '(' event-handler-expression ')' 2955 /// 2956 OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind, 2957 bool ParseOnly) { 2958 SourceLocation Loc = ConsumeToken(); 2959 SourceLocation LLoc = Tok.getLocation(); 2960 SourceLocation RLoc; 2961 2962 ExprResult Val = ParseOpenMPParensExpr(getOpenMPClauseName(Kind), RLoc); 2963 2964 if (Val.isInvalid()) 2965 return nullptr; 2966 2967 if (ParseOnly) 2968 return nullptr; 2969 return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc); 2970 } 2971 2972 /// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'. 2973 /// 2974 /// default-clause: 2975 /// 'default' '(' 'none' | 'shared' | 'firstprivate' ')' 2976 /// 2977 /// proc_bind-clause: 2978 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ')' 2979 /// 2980 /// update-clause: 2981 /// 'update' '(' 'in' | 'out' | 'inout' | 'mutexinoutset' ')' 2982 /// 2983 OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind, 2984 bool ParseOnly) { 2985 llvm::Optional<SimpleClauseData> Val = parseOpenMPSimpleClause(*this, Kind); 2986 if (!Val || ParseOnly) 2987 return nullptr; 2988 if (getLangOpts().OpenMP < 51 && Kind == OMPC_default && 2989 static_cast<DefaultKind>(Val.getValue().Type) == 2990 OMP_DEFAULT_firstprivate) { 2991 Diag(Val.getValue().LOpen, diag::err_omp_invalid_dsa) 2992 << getOpenMPClauseName(OMPC_firstprivate) 2993 << getOpenMPClauseName(OMPC_default) << "5.1"; 2994 return nullptr; 2995 } 2996 return Actions.ActOnOpenMPSimpleClause( 2997 Kind, Val.getValue().Type, Val.getValue().TypeLoc, Val.getValue().LOpen, 2998 Val.getValue().Loc, Val.getValue().RLoc); 2999 } 3000 3001 /// Parsing of OpenMP clauses like 'ordered'. 3002 /// 3003 /// ordered-clause: 3004 /// 'ordered' 3005 /// 3006 /// nowait-clause: 3007 /// 'nowait' 3008 /// 3009 /// untied-clause: 3010 /// 'untied' 3011 /// 3012 /// mergeable-clause: 3013 /// 'mergeable' 3014 /// 3015 /// read-clause: 3016 /// 'read' 3017 /// 3018 /// threads-clause: 3019 /// 'threads' 3020 /// 3021 /// simd-clause: 3022 /// 'simd' 3023 /// 3024 /// nogroup-clause: 3025 /// 'nogroup' 3026 /// 3027 OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly) { 3028 SourceLocation Loc = Tok.getLocation(); 3029 ConsumeAnyToken(); 3030 3031 if (ParseOnly) 3032 return nullptr; 3033 return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation()); 3034 } 3035 3036 /// Parsing of OpenMP clauses with single expressions and some additional 3037 /// argument like 'schedule' or 'dist_schedule'. 3038 /// 3039 /// schedule-clause: 3040 /// 'schedule' '(' [ modifier [ ',' modifier ] ':' ] kind [',' expression ] 3041 /// ')' 3042 /// 3043 /// if-clause: 3044 /// 'if' '(' [ directive-name-modifier ':' ] expression ')' 3045 /// 3046 /// defaultmap: 3047 /// 'defaultmap' '(' modifier [ ':' kind ] ')' 3048 /// 3049 /// device-clause: 3050 /// 'device' '(' [ device-modifier ':' ] expression ')' 3051 /// 3052 OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPDirectiveKind DKind, 3053 OpenMPClauseKind Kind, 3054 bool ParseOnly) { 3055 SourceLocation Loc = ConsumeToken(); 3056 SourceLocation DelimLoc; 3057 // Parse '('. 3058 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3059 if (T.expectAndConsume(diag::err_expected_lparen_after, 3060 getOpenMPClauseName(Kind).data())) 3061 return nullptr; 3062 3063 ExprResult Val; 3064 SmallVector<unsigned, 4> Arg; 3065 SmallVector<SourceLocation, 4> KLoc; 3066 if (Kind == OMPC_schedule) { 3067 enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements }; 3068 Arg.resize(NumberOfElements); 3069 KLoc.resize(NumberOfElements); 3070 Arg[Modifier1] = OMPC_SCHEDULE_MODIFIER_unknown; 3071 Arg[Modifier2] = OMPC_SCHEDULE_MODIFIER_unknown; 3072 Arg[ScheduleKind] = OMPC_SCHEDULE_unknown; 3073 unsigned KindModifier = getOpenMPSimpleClauseType( 3074 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3075 getLangOpts().OpenMP); 3076 if (KindModifier > OMPC_SCHEDULE_unknown) { 3077 // Parse 'modifier' 3078 Arg[Modifier1] = KindModifier; 3079 KLoc[Modifier1] = Tok.getLocation(); 3080 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3081 Tok.isNot(tok::annot_pragma_openmp_end)) 3082 ConsumeAnyToken(); 3083 if (Tok.is(tok::comma)) { 3084 // Parse ',' 'modifier' 3085 ConsumeAnyToken(); 3086 KindModifier = getOpenMPSimpleClauseType( 3087 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3088 getLangOpts().OpenMP); 3089 Arg[Modifier2] = KindModifier > OMPC_SCHEDULE_unknown 3090 ? KindModifier 3091 : (unsigned)OMPC_SCHEDULE_unknown; 3092 KLoc[Modifier2] = Tok.getLocation(); 3093 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3094 Tok.isNot(tok::annot_pragma_openmp_end)) 3095 ConsumeAnyToken(); 3096 } 3097 // Parse ':' 3098 if (Tok.is(tok::colon)) 3099 ConsumeAnyToken(); 3100 else 3101 Diag(Tok, diag::warn_pragma_expected_colon) << "schedule modifier"; 3102 KindModifier = getOpenMPSimpleClauseType( 3103 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3104 getLangOpts().OpenMP); 3105 } 3106 Arg[ScheduleKind] = KindModifier; 3107 KLoc[ScheduleKind] = Tok.getLocation(); 3108 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3109 Tok.isNot(tok::annot_pragma_openmp_end)) 3110 ConsumeAnyToken(); 3111 if ((Arg[ScheduleKind] == OMPC_SCHEDULE_static || 3112 Arg[ScheduleKind] == OMPC_SCHEDULE_dynamic || 3113 Arg[ScheduleKind] == OMPC_SCHEDULE_guided) && 3114 Tok.is(tok::comma)) 3115 DelimLoc = ConsumeAnyToken(); 3116 } else if (Kind == OMPC_dist_schedule) { 3117 Arg.push_back(getOpenMPSimpleClauseType( 3118 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3119 getLangOpts().OpenMP)); 3120 KLoc.push_back(Tok.getLocation()); 3121 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3122 Tok.isNot(tok::annot_pragma_openmp_end)) 3123 ConsumeAnyToken(); 3124 if (Arg.back() == OMPC_DIST_SCHEDULE_static && Tok.is(tok::comma)) 3125 DelimLoc = ConsumeAnyToken(); 3126 } else if (Kind == OMPC_defaultmap) { 3127 // Get a defaultmap modifier 3128 unsigned Modifier = getOpenMPSimpleClauseType( 3129 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3130 getLangOpts().OpenMP); 3131 // Set defaultmap modifier to unknown if it is either scalar, aggregate, or 3132 // pointer 3133 if (Modifier < OMPC_DEFAULTMAP_MODIFIER_unknown) 3134 Modifier = OMPC_DEFAULTMAP_MODIFIER_unknown; 3135 Arg.push_back(Modifier); 3136 KLoc.push_back(Tok.getLocation()); 3137 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3138 Tok.isNot(tok::annot_pragma_openmp_end)) 3139 ConsumeAnyToken(); 3140 // Parse ':' 3141 if (Tok.is(tok::colon) || getLangOpts().OpenMP < 50) { 3142 if (Tok.is(tok::colon)) 3143 ConsumeAnyToken(); 3144 else if (Arg.back() != OMPC_DEFAULTMAP_MODIFIER_unknown) 3145 Diag(Tok, diag::warn_pragma_expected_colon) << "defaultmap modifier"; 3146 // Get a defaultmap kind 3147 Arg.push_back(getOpenMPSimpleClauseType( 3148 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3149 getLangOpts().OpenMP)); 3150 KLoc.push_back(Tok.getLocation()); 3151 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3152 Tok.isNot(tok::annot_pragma_openmp_end)) 3153 ConsumeAnyToken(); 3154 } else { 3155 Arg.push_back(OMPC_DEFAULTMAP_unknown); 3156 KLoc.push_back(SourceLocation()); 3157 } 3158 } else if (Kind == OMPC_device) { 3159 // Only target executable directives support extended device construct. 3160 if (isOpenMPTargetExecutionDirective(DKind) && getLangOpts().OpenMP >= 50 && 3161 NextToken().is(tok::colon)) { 3162 // Parse optional <device modifier> ':' 3163 Arg.push_back(getOpenMPSimpleClauseType( 3164 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3165 getLangOpts().OpenMP)); 3166 KLoc.push_back(Tok.getLocation()); 3167 ConsumeAnyToken(); 3168 // Parse ':' 3169 ConsumeAnyToken(); 3170 } else { 3171 Arg.push_back(OMPC_DEVICE_unknown); 3172 KLoc.emplace_back(); 3173 } 3174 } else { 3175 assert(Kind == OMPC_if); 3176 KLoc.push_back(Tok.getLocation()); 3177 TentativeParsingAction TPA(*this); 3178 auto DK = parseOpenMPDirectiveKind(*this); 3179 Arg.push_back(DK); 3180 if (DK != OMPD_unknown) { 3181 ConsumeToken(); 3182 if (Tok.is(tok::colon) && getLangOpts().OpenMP > 40) { 3183 TPA.Commit(); 3184 DelimLoc = ConsumeToken(); 3185 } else { 3186 TPA.Revert(); 3187 Arg.back() = unsigned(OMPD_unknown); 3188 } 3189 } else { 3190 TPA.Revert(); 3191 } 3192 } 3193 3194 bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) || 3195 (Kind == OMPC_dist_schedule && DelimLoc.isValid()) || 3196 Kind == OMPC_if || Kind == OMPC_device; 3197 if (NeedAnExpression) { 3198 SourceLocation ELoc = Tok.getLocation(); 3199 ExprResult LHS(ParseCastExpression(AnyCastExpr, false, NotTypeCast)); 3200 Val = ParseRHSOfBinaryExpression(LHS, prec::Conditional); 3201 Val = 3202 Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false); 3203 } 3204 3205 // Parse ')'. 3206 SourceLocation RLoc = Tok.getLocation(); 3207 if (!T.consumeClose()) 3208 RLoc = T.getCloseLocation(); 3209 3210 if (NeedAnExpression && Val.isInvalid()) 3211 return nullptr; 3212 3213 if (ParseOnly) 3214 return nullptr; 3215 return Actions.ActOnOpenMPSingleExprWithArgClause( 3216 Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc, RLoc); 3217 } 3218 3219 static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec, 3220 UnqualifiedId &ReductionId) { 3221 if (ReductionIdScopeSpec.isEmpty()) { 3222 auto OOK = OO_None; 3223 switch (P.getCurToken().getKind()) { 3224 case tok::plus: 3225 OOK = OO_Plus; 3226 break; 3227 case tok::minus: 3228 OOK = OO_Minus; 3229 break; 3230 case tok::star: 3231 OOK = OO_Star; 3232 break; 3233 case tok::amp: 3234 OOK = OO_Amp; 3235 break; 3236 case tok::pipe: 3237 OOK = OO_Pipe; 3238 break; 3239 case tok::caret: 3240 OOK = OO_Caret; 3241 break; 3242 case tok::ampamp: 3243 OOK = OO_AmpAmp; 3244 break; 3245 case tok::pipepipe: 3246 OOK = OO_PipePipe; 3247 break; 3248 default: 3249 break; 3250 } 3251 if (OOK != OO_None) { 3252 SourceLocation OpLoc = P.ConsumeToken(); 3253 SourceLocation SymbolLocations[] = {OpLoc, OpLoc, SourceLocation()}; 3254 ReductionId.setOperatorFunctionId(OpLoc, OOK, SymbolLocations); 3255 return false; 3256 } 3257 } 3258 return P.ParseUnqualifiedId( 3259 ReductionIdScopeSpec, /*ObjectType=*/nullptr, 3260 /*ObjectHadErrors=*/false, /*EnteringContext*/ false, 3261 /*AllowDestructorName*/ false, 3262 /*AllowConstructorName*/ false, 3263 /*AllowDeductionGuide*/ false, nullptr, ReductionId); 3264 } 3265 3266 /// Checks if the token is a valid map-type-modifier. 3267 /// FIXME: It will return an OpenMPMapClauseKind if that's what it parses. 3268 static OpenMPMapModifierKind isMapModifier(Parser &P) { 3269 Token Tok = P.getCurToken(); 3270 if (!Tok.is(tok::identifier)) 3271 return OMPC_MAP_MODIFIER_unknown; 3272 3273 Preprocessor &PP = P.getPreprocessor(); 3274 OpenMPMapModifierKind TypeModifier = 3275 static_cast<OpenMPMapModifierKind>(getOpenMPSimpleClauseType( 3276 OMPC_map, PP.getSpelling(Tok), P.getLangOpts().OpenMP)); 3277 return TypeModifier; 3278 } 3279 3280 /// Parse the mapper modifier in map, to, and from clauses. 3281 bool Parser::parseMapperModifier(OpenMPVarListDataTy &Data) { 3282 // Parse '('. 3283 BalancedDelimiterTracker T(*this, tok::l_paren, tok::colon); 3284 if (T.expectAndConsume(diag::err_expected_lparen_after, "mapper")) { 3285 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3286 StopBeforeMatch); 3287 return true; 3288 } 3289 // Parse mapper-identifier 3290 if (getLangOpts().CPlusPlus) 3291 ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec, 3292 /*ObjectType=*/nullptr, 3293 /*ObjectHadErrors=*/false, 3294 /*EnteringContext=*/false); 3295 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) { 3296 Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier); 3297 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3298 StopBeforeMatch); 3299 return true; 3300 } 3301 auto &DeclNames = Actions.getASTContext().DeclarationNames; 3302 Data.ReductionOrMapperId = DeclarationNameInfo( 3303 DeclNames.getIdentifier(Tok.getIdentifierInfo()), Tok.getLocation()); 3304 ConsumeToken(); 3305 // Parse ')'. 3306 return T.consumeClose(); 3307 } 3308 3309 /// Parse map-type-modifiers in map clause. 3310 /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) 3311 /// where, map-type-modifier ::= always | close | mapper(mapper-identifier) | 3312 /// present 3313 bool Parser::parseMapTypeModifiers(OpenMPVarListDataTy &Data) { 3314 while (getCurToken().isNot(tok::colon)) { 3315 OpenMPMapModifierKind TypeModifier = isMapModifier(*this); 3316 if (TypeModifier == OMPC_MAP_MODIFIER_always || 3317 TypeModifier == OMPC_MAP_MODIFIER_close || 3318 TypeModifier == OMPC_MAP_MODIFIER_present) { 3319 Data.MapTypeModifiers.push_back(TypeModifier); 3320 Data.MapTypeModifiersLoc.push_back(Tok.getLocation()); 3321 ConsumeToken(); 3322 } else if (TypeModifier == OMPC_MAP_MODIFIER_mapper) { 3323 Data.MapTypeModifiers.push_back(TypeModifier); 3324 Data.MapTypeModifiersLoc.push_back(Tok.getLocation()); 3325 ConsumeToken(); 3326 if (parseMapperModifier(Data)) 3327 return true; 3328 } else { 3329 // For the case of unknown map-type-modifier or a map-type. 3330 // Map-type is followed by a colon; the function returns when it 3331 // encounters a token followed by a colon. 3332 if (Tok.is(tok::comma)) { 3333 Diag(Tok, diag::err_omp_map_type_modifier_missing); 3334 ConsumeToken(); 3335 continue; 3336 } 3337 // Potential map-type token as it is followed by a colon. 3338 if (PP.LookAhead(0).is(tok::colon)) 3339 return false; 3340 Diag(Tok, diag::err_omp_unknown_map_type_modifier) 3341 << (getLangOpts().OpenMP >= 51 ? 1 : 0); 3342 ConsumeToken(); 3343 } 3344 if (getCurToken().is(tok::comma)) 3345 ConsumeToken(); 3346 } 3347 return false; 3348 } 3349 3350 /// Checks if the token is a valid map-type. 3351 /// FIXME: It will return an OpenMPMapModifierKind if that's what it parses. 3352 static OpenMPMapClauseKind isMapType(Parser &P) { 3353 Token Tok = P.getCurToken(); 3354 // The map-type token can be either an identifier or the C++ delete keyword. 3355 if (!Tok.isOneOf(tok::identifier, tok::kw_delete)) 3356 return OMPC_MAP_unknown; 3357 Preprocessor &PP = P.getPreprocessor(); 3358 OpenMPMapClauseKind MapType = 3359 static_cast<OpenMPMapClauseKind>(getOpenMPSimpleClauseType( 3360 OMPC_map, PP.getSpelling(Tok), P.getLangOpts().OpenMP)); 3361 return MapType; 3362 } 3363 3364 /// Parse map-type in map clause. 3365 /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) 3366 /// where, map-type ::= to | from | tofrom | alloc | release | delete 3367 static void parseMapType(Parser &P, Parser::OpenMPVarListDataTy &Data) { 3368 Token Tok = P.getCurToken(); 3369 if (Tok.is(tok::colon)) { 3370 P.Diag(Tok, diag::err_omp_map_type_missing); 3371 return; 3372 } 3373 Data.ExtraModifier = isMapType(P); 3374 if (Data.ExtraModifier == OMPC_MAP_unknown) 3375 P.Diag(Tok, diag::err_omp_unknown_map_type); 3376 P.ConsumeToken(); 3377 } 3378 3379 /// Parses simple expression in parens for single-expression clauses of OpenMP 3380 /// constructs. 3381 ExprResult Parser::ParseOpenMPIteratorsExpr() { 3382 assert(Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator" && 3383 "Expected 'iterator' token."); 3384 SourceLocation IteratorKwLoc = ConsumeToken(); 3385 3386 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3387 if (T.expectAndConsume(diag::err_expected_lparen_after, "iterator")) 3388 return ExprError(); 3389 3390 SourceLocation LLoc = T.getOpenLocation(); 3391 SmallVector<Sema::OMPIteratorData, 4> Data; 3392 while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) { 3393 // Check if the type parsing is required. 3394 ParsedType IteratorType; 3395 if (Tok.isNot(tok::identifier) || NextToken().isNot(tok::equal)) { 3396 // identifier '=' is not found - parse type. 3397 TypeResult TR = ParseTypeName(); 3398 if (TR.isInvalid()) { 3399 T.skipToEnd(); 3400 return ExprError(); 3401 } 3402 IteratorType = TR.get(); 3403 } 3404 3405 // Parse identifier. 3406 IdentifierInfo *II = nullptr; 3407 SourceLocation IdLoc; 3408 if (Tok.is(tok::identifier)) { 3409 II = Tok.getIdentifierInfo(); 3410 IdLoc = ConsumeToken(); 3411 } else { 3412 Diag(Tok, diag::err_expected_unqualified_id) << 0; 3413 } 3414 3415 // Parse '='. 3416 SourceLocation AssignLoc; 3417 if (Tok.is(tok::equal)) 3418 AssignLoc = ConsumeToken(); 3419 else 3420 Diag(Tok, diag::err_omp_expected_equal_in_iterator); 3421 3422 // Parse range-specification - <begin> ':' <end> [ ':' <step> ] 3423 ColonProtectionRAIIObject ColonRAII(*this); 3424 // Parse <begin> 3425 SourceLocation Loc = Tok.getLocation(); 3426 ExprResult LHS = ParseCastExpression(AnyCastExpr); 3427 ExprResult Begin = Actions.CorrectDelayedTyposInExpr( 3428 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3429 Begin = Actions.ActOnFinishFullExpr(Begin.get(), Loc, 3430 /*DiscardedValue=*/false); 3431 // Parse ':'. 3432 SourceLocation ColonLoc; 3433 if (Tok.is(tok::colon)) 3434 ColonLoc = ConsumeToken(); 3435 3436 // Parse <end> 3437 Loc = Tok.getLocation(); 3438 LHS = ParseCastExpression(AnyCastExpr); 3439 ExprResult End = Actions.CorrectDelayedTyposInExpr( 3440 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3441 End = Actions.ActOnFinishFullExpr(End.get(), Loc, 3442 /*DiscardedValue=*/false); 3443 3444 SourceLocation SecColonLoc; 3445 ExprResult Step; 3446 // Parse optional step. 3447 if (Tok.is(tok::colon)) { 3448 // Parse ':' 3449 SecColonLoc = ConsumeToken(); 3450 // Parse <step> 3451 Loc = Tok.getLocation(); 3452 LHS = ParseCastExpression(AnyCastExpr); 3453 Step = Actions.CorrectDelayedTyposInExpr( 3454 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3455 Step = Actions.ActOnFinishFullExpr(Step.get(), Loc, 3456 /*DiscardedValue=*/false); 3457 } 3458 3459 // Parse ',' or ')' 3460 if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren)) 3461 Diag(Tok, diag::err_omp_expected_punc_after_iterator); 3462 if (Tok.is(tok::comma)) 3463 ConsumeToken(); 3464 3465 Sema::OMPIteratorData &D = Data.emplace_back(); 3466 D.DeclIdent = II; 3467 D.DeclIdentLoc = IdLoc; 3468 D.Type = IteratorType; 3469 D.AssignLoc = AssignLoc; 3470 D.ColonLoc = ColonLoc; 3471 D.SecColonLoc = SecColonLoc; 3472 D.Range.Begin = Begin.get(); 3473 D.Range.End = End.get(); 3474 D.Range.Step = Step.get(); 3475 } 3476 3477 // Parse ')'. 3478 SourceLocation RLoc = Tok.getLocation(); 3479 if (!T.consumeClose()) 3480 RLoc = T.getCloseLocation(); 3481 3482 return Actions.ActOnOMPIteratorExpr(getCurScope(), IteratorKwLoc, LLoc, RLoc, 3483 Data); 3484 } 3485 3486 /// Parses clauses with list. 3487 bool Parser::ParseOpenMPVarList(OpenMPDirectiveKind DKind, 3488 OpenMPClauseKind Kind, 3489 SmallVectorImpl<Expr *> &Vars, 3490 OpenMPVarListDataTy &Data) { 3491 UnqualifiedId UnqualifiedReductionId; 3492 bool InvalidReductionId = false; 3493 bool IsInvalidMapperModifier = false; 3494 3495 // Parse '('. 3496 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3497 if (T.expectAndConsume(diag::err_expected_lparen_after, 3498 getOpenMPClauseName(Kind).data())) 3499 return true; 3500 3501 bool HasIterator = false; 3502 bool NeedRParenForLinear = false; 3503 BalancedDelimiterTracker LinearT(*this, tok::l_paren, 3504 tok::annot_pragma_openmp_end); 3505 // Handle reduction-identifier for reduction clause. 3506 if (Kind == OMPC_reduction || Kind == OMPC_task_reduction || 3507 Kind == OMPC_in_reduction) { 3508 Data.ExtraModifier = OMPC_REDUCTION_unknown; 3509 if (Kind == OMPC_reduction && getLangOpts().OpenMP >= 50 && 3510 (Tok.is(tok::identifier) || Tok.is(tok::kw_default)) && 3511 NextToken().is(tok::comma)) { 3512 // Parse optional reduction modifier. 3513 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3514 getLangOpts().OpenMP); 3515 Data.ExtraModifierLoc = Tok.getLocation(); 3516 ConsumeToken(); 3517 assert(Tok.is(tok::comma) && "Expected comma."); 3518 (void)ConsumeToken(); 3519 } 3520 ColonProtectionRAIIObject ColonRAII(*this); 3521 if (getLangOpts().CPlusPlus) 3522 ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec, 3523 /*ObjectType=*/nullptr, 3524 /*ObjectHadErrors=*/false, 3525 /*EnteringContext=*/false); 3526 InvalidReductionId = ParseReductionId( 3527 *this, Data.ReductionOrMapperIdScopeSpec, UnqualifiedReductionId); 3528 if (InvalidReductionId) { 3529 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3530 StopBeforeMatch); 3531 } 3532 if (Tok.is(tok::colon)) 3533 Data.ColonLoc = ConsumeToken(); 3534 else 3535 Diag(Tok, diag::warn_pragma_expected_colon) << "reduction identifier"; 3536 if (!InvalidReductionId) 3537 Data.ReductionOrMapperId = 3538 Actions.GetNameFromUnqualifiedId(UnqualifiedReductionId); 3539 } else if (Kind == OMPC_depend) { 3540 if (getLangOpts().OpenMP >= 50) { 3541 if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator") { 3542 // Handle optional dependence modifier. 3543 // iterator(iterators-definition) 3544 // where iterators-definition is iterator-specifier [, 3545 // iterators-definition ] 3546 // where iterator-specifier is [ iterator-type ] identifier = 3547 // range-specification 3548 HasIterator = true; 3549 EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope); 3550 ExprResult IteratorRes = ParseOpenMPIteratorsExpr(); 3551 Data.DepModOrTailExpr = IteratorRes.get(); 3552 // Parse ',' 3553 ExpectAndConsume(tok::comma); 3554 } 3555 } 3556 // Handle dependency type for depend clause. 3557 ColonProtectionRAIIObject ColonRAII(*this); 3558 Data.ExtraModifier = getOpenMPSimpleClauseType( 3559 Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : "", 3560 getLangOpts().OpenMP); 3561 Data.ExtraModifierLoc = Tok.getLocation(); 3562 if (Data.ExtraModifier == OMPC_DEPEND_unknown) { 3563 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3564 StopBeforeMatch); 3565 } else { 3566 ConsumeToken(); 3567 // Special processing for depend(source) clause. 3568 if (DKind == OMPD_ordered && Data.ExtraModifier == OMPC_DEPEND_source) { 3569 // Parse ')'. 3570 T.consumeClose(); 3571 return false; 3572 } 3573 } 3574 if (Tok.is(tok::colon)) { 3575 Data.ColonLoc = ConsumeToken(); 3576 } else { 3577 Diag(Tok, DKind == OMPD_ordered ? diag::warn_pragma_expected_colon_r_paren 3578 : diag::warn_pragma_expected_colon) 3579 << "dependency type"; 3580 } 3581 } else if (Kind == OMPC_linear) { 3582 // Try to parse modifier if any. 3583 Data.ExtraModifier = OMPC_LINEAR_val; 3584 if (Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::l_paren)) { 3585 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3586 getLangOpts().OpenMP); 3587 Data.ExtraModifierLoc = ConsumeToken(); 3588 LinearT.consumeOpen(); 3589 NeedRParenForLinear = true; 3590 } 3591 } else if (Kind == OMPC_lastprivate) { 3592 // Try to parse modifier if any. 3593 Data.ExtraModifier = OMPC_LASTPRIVATE_unknown; 3594 // Conditional modifier allowed only in OpenMP 5.0 and not supported in 3595 // distribute and taskloop based directives. 3596 if ((getLangOpts().OpenMP >= 50 && !isOpenMPDistributeDirective(DKind) && 3597 !isOpenMPTaskLoopDirective(DKind)) && 3598 Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::colon)) { 3599 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3600 getLangOpts().OpenMP); 3601 Data.ExtraModifierLoc = Tok.getLocation(); 3602 ConsumeToken(); 3603 assert(Tok.is(tok::colon) && "Expected colon."); 3604 Data.ColonLoc = ConsumeToken(); 3605 } 3606 } else if (Kind == OMPC_map) { 3607 // Handle map type for map clause. 3608 ColonProtectionRAIIObject ColonRAII(*this); 3609 3610 // The first identifier may be a list item, a map-type or a 3611 // map-type-modifier. The map-type can also be delete which has the same 3612 // spelling of the C++ delete keyword. 3613 Data.ExtraModifier = OMPC_MAP_unknown; 3614 Data.ExtraModifierLoc = Tok.getLocation(); 3615 3616 // Check for presence of a colon in the map clause. 3617 TentativeParsingAction TPA(*this); 3618 bool ColonPresent = false; 3619 if (SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3620 StopBeforeMatch)) { 3621 if (Tok.is(tok::colon)) 3622 ColonPresent = true; 3623 } 3624 TPA.Revert(); 3625 // Only parse map-type-modifier[s] and map-type if a colon is present in 3626 // the map clause. 3627 if (ColonPresent) { 3628 IsInvalidMapperModifier = parseMapTypeModifiers(Data); 3629 if (!IsInvalidMapperModifier) 3630 parseMapType(*this, Data); 3631 else 3632 SkipUntil(tok::colon, tok::annot_pragma_openmp_end, StopBeforeMatch); 3633 } 3634 if (Data.ExtraModifier == OMPC_MAP_unknown) { 3635 Data.ExtraModifier = OMPC_MAP_tofrom; 3636 Data.IsMapTypeImplicit = true; 3637 } 3638 3639 if (Tok.is(tok::colon)) 3640 Data.ColonLoc = ConsumeToken(); 3641 } else if (Kind == OMPC_to || Kind == OMPC_from) { 3642 while (Tok.is(tok::identifier)) { 3643 auto Modifier = 3644 static_cast<OpenMPMotionModifierKind>(getOpenMPSimpleClauseType( 3645 Kind, PP.getSpelling(Tok), getLangOpts().OpenMP)); 3646 if (Modifier == OMPC_MOTION_MODIFIER_unknown) 3647 break; 3648 Data.MotionModifiers.push_back(Modifier); 3649 Data.MotionModifiersLoc.push_back(Tok.getLocation()); 3650 ConsumeToken(); 3651 if (Modifier == OMPC_MOTION_MODIFIER_mapper) { 3652 IsInvalidMapperModifier = parseMapperModifier(Data); 3653 if (IsInvalidMapperModifier) 3654 break; 3655 } 3656 // OpenMP < 5.1 doesn't permit a ',' or additional modifiers. 3657 if (getLangOpts().OpenMP < 51) 3658 break; 3659 // OpenMP 5.1 accepts an optional ',' even if the next character is ':'. 3660 // TODO: Is that intentional? 3661 if (Tok.is(tok::comma)) 3662 ConsumeToken(); 3663 } 3664 if (!Data.MotionModifiers.empty() && Tok.isNot(tok::colon)) { 3665 if (!IsInvalidMapperModifier) { 3666 if (getLangOpts().OpenMP < 51) 3667 Diag(Tok, diag::warn_pragma_expected_colon) << ")"; 3668 else 3669 Diag(Tok, diag::warn_pragma_expected_colon) << "motion modifier"; 3670 } 3671 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3672 StopBeforeMatch); 3673 } 3674 // OpenMP 5.1 permits a ':' even without a preceding modifier. TODO: Is 3675 // that intentional? 3676 if ((!Data.MotionModifiers.empty() || getLangOpts().OpenMP >= 51) && 3677 Tok.is(tok::colon)) 3678 Data.ColonLoc = ConsumeToken(); 3679 } else if (Kind == OMPC_allocate || 3680 (Kind == OMPC_affinity && Tok.is(tok::identifier) && 3681 PP.getSpelling(Tok) == "iterator")) { 3682 // Handle optional allocator expression followed by colon delimiter. 3683 ColonProtectionRAIIObject ColonRAII(*this); 3684 TentativeParsingAction TPA(*this); 3685 // OpenMP 5.0, 2.10.1, task Construct. 3686 // where aff-modifier is one of the following: 3687 // iterator(iterators-definition) 3688 ExprResult Tail; 3689 if (Kind == OMPC_allocate) { 3690 Tail = ParseAssignmentExpression(); 3691 } else { 3692 HasIterator = true; 3693 EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope); 3694 Tail = ParseOpenMPIteratorsExpr(); 3695 } 3696 Tail = Actions.CorrectDelayedTyposInExpr(Tail); 3697 Tail = Actions.ActOnFinishFullExpr(Tail.get(), T.getOpenLocation(), 3698 /*DiscardedValue=*/false); 3699 if (Tail.isUsable()) { 3700 if (Tok.is(tok::colon)) { 3701 Data.DepModOrTailExpr = Tail.get(); 3702 Data.ColonLoc = ConsumeToken(); 3703 TPA.Commit(); 3704 } else { 3705 // Colon not found, parse only list of variables. 3706 TPA.Revert(); 3707 } 3708 } else { 3709 // Parsing was unsuccessfull, revert and skip to the end of clause or 3710 // directive. 3711 TPA.Revert(); 3712 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3713 StopBeforeMatch); 3714 } 3715 } 3716 3717 bool IsComma = 3718 (Kind != OMPC_reduction && Kind != OMPC_task_reduction && 3719 Kind != OMPC_in_reduction && Kind != OMPC_depend && Kind != OMPC_map) || 3720 (Kind == OMPC_reduction && !InvalidReductionId) || 3721 (Kind == OMPC_map && Data.ExtraModifier != OMPC_MAP_unknown) || 3722 (Kind == OMPC_depend && Data.ExtraModifier != OMPC_DEPEND_unknown); 3723 const bool MayHaveTail = (Kind == OMPC_linear || Kind == OMPC_aligned); 3724 while (IsComma || (Tok.isNot(tok::r_paren) && Tok.isNot(tok::colon) && 3725 Tok.isNot(tok::annot_pragma_openmp_end))) { 3726 ParseScope OMPListScope(this, Scope::OpenMPDirectiveScope); 3727 ColonProtectionRAIIObject ColonRAII(*this, MayHaveTail); 3728 // Parse variable 3729 ExprResult VarExpr = 3730 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()); 3731 if (VarExpr.isUsable()) { 3732 Vars.push_back(VarExpr.get()); 3733 } else { 3734 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3735 StopBeforeMatch); 3736 } 3737 // Skip ',' if any 3738 IsComma = Tok.is(tok::comma); 3739 if (IsComma) 3740 ConsumeToken(); 3741 else if (Tok.isNot(tok::r_paren) && 3742 Tok.isNot(tok::annot_pragma_openmp_end) && 3743 (!MayHaveTail || Tok.isNot(tok::colon))) 3744 Diag(Tok, diag::err_omp_expected_punc) 3745 << ((Kind == OMPC_flush) ? getOpenMPDirectiveName(OMPD_flush) 3746 : getOpenMPClauseName(Kind)) 3747 << (Kind == OMPC_flush); 3748 } 3749 3750 // Parse ')' for linear clause with modifier. 3751 if (NeedRParenForLinear) 3752 LinearT.consumeClose(); 3753 3754 // Parse ':' linear-step (or ':' alignment). 3755 const bool MustHaveTail = MayHaveTail && Tok.is(tok::colon); 3756 if (MustHaveTail) { 3757 Data.ColonLoc = Tok.getLocation(); 3758 SourceLocation ELoc = ConsumeToken(); 3759 ExprResult Tail = ParseAssignmentExpression(); 3760 Tail = 3761 Actions.ActOnFinishFullExpr(Tail.get(), ELoc, /*DiscardedValue*/ false); 3762 if (Tail.isUsable()) 3763 Data.DepModOrTailExpr = Tail.get(); 3764 else 3765 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3766 StopBeforeMatch); 3767 } 3768 3769 // Parse ')'. 3770 Data.RLoc = Tok.getLocation(); 3771 if (!T.consumeClose()) 3772 Data.RLoc = T.getCloseLocation(); 3773 // Exit from scope when the iterator is used in depend clause. 3774 if (HasIterator) 3775 ExitScope(); 3776 return (Kind != OMPC_depend && Kind != OMPC_map && Vars.empty()) || 3777 (MustHaveTail && !Data.DepModOrTailExpr) || InvalidReductionId || 3778 IsInvalidMapperModifier; 3779 } 3780 3781 /// Parsing of OpenMP clause 'private', 'firstprivate', 'lastprivate', 3782 /// 'shared', 'copyin', 'copyprivate', 'flush', 'reduction', 'task_reduction', 3783 /// 'in_reduction', 'nontemporal', 'exclusive' or 'inclusive'. 3784 /// 3785 /// private-clause: 3786 /// 'private' '(' list ')' 3787 /// firstprivate-clause: 3788 /// 'firstprivate' '(' list ')' 3789 /// lastprivate-clause: 3790 /// 'lastprivate' '(' list ')' 3791 /// shared-clause: 3792 /// 'shared' '(' list ')' 3793 /// linear-clause: 3794 /// 'linear' '(' linear-list [ ':' linear-step ] ')' 3795 /// aligned-clause: 3796 /// 'aligned' '(' list [ ':' alignment ] ')' 3797 /// reduction-clause: 3798 /// 'reduction' '(' [ modifier ',' ] reduction-identifier ':' list ')' 3799 /// task_reduction-clause: 3800 /// 'task_reduction' '(' reduction-identifier ':' list ')' 3801 /// in_reduction-clause: 3802 /// 'in_reduction' '(' reduction-identifier ':' list ')' 3803 /// copyprivate-clause: 3804 /// 'copyprivate' '(' list ')' 3805 /// flush-clause: 3806 /// 'flush' '(' list ')' 3807 /// depend-clause: 3808 /// 'depend' '(' in | out | inout : list | source ')' 3809 /// map-clause: 3810 /// 'map' '(' [ [ always [,] ] [ close [,] ] 3811 /// [ mapper '(' mapper-identifier ')' [,] ] 3812 /// to | from | tofrom | alloc | release | delete ':' ] list ')'; 3813 /// to-clause: 3814 /// 'to' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')' 3815 /// from-clause: 3816 /// 'from' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')' 3817 /// use_device_ptr-clause: 3818 /// 'use_device_ptr' '(' list ')' 3819 /// use_device_addr-clause: 3820 /// 'use_device_addr' '(' list ')' 3821 /// is_device_ptr-clause: 3822 /// 'is_device_ptr' '(' list ')' 3823 /// allocate-clause: 3824 /// 'allocate' '(' [ allocator ':' ] list ')' 3825 /// nontemporal-clause: 3826 /// 'nontemporal' '(' list ')' 3827 /// inclusive-clause: 3828 /// 'inclusive' '(' list ')' 3829 /// exclusive-clause: 3830 /// 'exclusive' '(' list ')' 3831 /// 3832 /// For 'linear' clause linear-list may have the following forms: 3833 /// list 3834 /// modifier(list) 3835 /// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++). 3836 OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind, 3837 OpenMPClauseKind Kind, 3838 bool ParseOnly) { 3839 SourceLocation Loc = Tok.getLocation(); 3840 SourceLocation LOpen = ConsumeToken(); 3841 SmallVector<Expr *, 4> Vars; 3842 OpenMPVarListDataTy Data; 3843 3844 if (ParseOpenMPVarList(DKind, Kind, Vars, Data)) 3845 return nullptr; 3846 3847 if (ParseOnly) 3848 return nullptr; 3849 OMPVarListLocTy Locs(Loc, LOpen, Data.RLoc); 3850 return Actions.ActOnOpenMPVarListClause( 3851 Kind, Vars, Data.DepModOrTailExpr, Locs, Data.ColonLoc, 3852 Data.ReductionOrMapperIdScopeSpec, Data.ReductionOrMapperId, 3853 Data.ExtraModifier, Data.MapTypeModifiers, Data.MapTypeModifiersLoc, 3854 Data.IsMapTypeImplicit, Data.ExtraModifierLoc, Data.MotionModifiers, 3855 Data.MotionModifiersLoc); 3856 } 3857