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 cutOffParsing(); 445 Actions.CodeCompleteInitializer(getCurScope(), OmpPrivParm); 446 Actions.FinalizeDeclaration(OmpPrivParm); 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_tile: 2157 case OMPD_task: 2158 case OMPD_taskyield: 2159 case OMPD_barrier: 2160 case OMPD_taskwait: 2161 case OMPD_taskgroup: 2162 case OMPD_flush: 2163 case OMPD_depobj: 2164 case OMPD_scan: 2165 case OMPD_for: 2166 case OMPD_for_simd: 2167 case OMPD_sections: 2168 case OMPD_section: 2169 case OMPD_single: 2170 case OMPD_master: 2171 case OMPD_ordered: 2172 case OMPD_critical: 2173 case OMPD_parallel_for: 2174 case OMPD_parallel_for_simd: 2175 case OMPD_parallel_sections: 2176 case OMPD_parallel_master: 2177 case OMPD_atomic: 2178 case OMPD_target: 2179 case OMPD_teams: 2180 case OMPD_cancellation_point: 2181 case OMPD_cancel: 2182 case OMPD_target_data: 2183 case OMPD_target_enter_data: 2184 case OMPD_target_exit_data: 2185 case OMPD_target_parallel: 2186 case OMPD_target_parallel_for: 2187 case OMPD_taskloop: 2188 case OMPD_taskloop_simd: 2189 case OMPD_master_taskloop: 2190 case OMPD_master_taskloop_simd: 2191 case OMPD_parallel_master_taskloop: 2192 case OMPD_parallel_master_taskloop_simd: 2193 case OMPD_distribute: 2194 case OMPD_end_declare_target: 2195 case OMPD_target_update: 2196 case OMPD_distribute_parallel_for: 2197 case OMPD_distribute_parallel_for_simd: 2198 case OMPD_distribute_simd: 2199 case OMPD_target_parallel_for_simd: 2200 case OMPD_target_simd: 2201 case OMPD_teams_distribute: 2202 case OMPD_teams_distribute_simd: 2203 case OMPD_teams_distribute_parallel_for_simd: 2204 case OMPD_teams_distribute_parallel_for: 2205 case OMPD_target_teams: 2206 case OMPD_target_teams_distribute: 2207 case OMPD_target_teams_distribute_parallel_for: 2208 case OMPD_target_teams_distribute_parallel_for_simd: 2209 case OMPD_target_teams_distribute_simd: 2210 Diag(Tok, diag::err_omp_unexpected_directive) 2211 << 1 << getOpenMPDirectiveName(DKind); 2212 break; 2213 default: 2214 break; 2215 } 2216 while (Tok.isNot(tok::annot_pragma_openmp_end)) 2217 ConsumeAnyToken(); 2218 ConsumeAnyToken(); 2219 return nullptr; 2220 } 2221 2222 /// Parsing of declarative or executable OpenMP directives. 2223 /// 2224 /// threadprivate-directive: 2225 /// annot_pragma_openmp 'threadprivate' simple-variable-list 2226 /// annot_pragma_openmp_end 2227 /// 2228 /// allocate-directive: 2229 /// annot_pragma_openmp 'allocate' simple-variable-list 2230 /// annot_pragma_openmp_end 2231 /// 2232 /// declare-reduction-directive: 2233 /// annot_pragma_openmp 'declare' 'reduction' '(' <reduction_id> ':' 2234 /// <type> {',' <type>} ':' <expression> ')' ['initializer' '(' 2235 /// ('omp_priv' '=' <expression>|<function_call>) ')'] 2236 /// annot_pragma_openmp_end 2237 /// 2238 /// declare-mapper-directive: 2239 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':'] 2240 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 2241 /// annot_pragma_openmp_end 2242 /// 2243 /// executable-directive: 2244 /// annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' | 2245 /// 'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] | 2246 /// 'parallel for' | 'parallel sections' | 'parallel master' | 'task' | 2247 /// 'taskyield' | 'barrier' | 'taskwait' | 'flush' | 'ordered' | 2248 /// 'atomic' | 'for simd' | 'parallel for simd' | 'target' | 'target 2249 /// data' | 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' | 2250 /// 'master taskloop' | 'master taskloop simd' | 'parallel master 2251 /// taskloop' | 'parallel master taskloop simd' | 'distribute' | 'target 2252 /// enter data' | 'target exit data' | 'target parallel' | 'target 2253 /// parallel for' | 'target update' | 'distribute parallel for' | 2254 /// 'distribute paralle for simd' | 'distribute simd' | 'target parallel 2255 /// for simd' | 'target simd' | 'teams distribute' | 'teams distribute 2256 /// simd' | 'teams distribute parallel for simd' | 'teams distribute 2257 /// parallel for' | 'target teams' | 'target teams distribute' | 'target 2258 /// teams distribute parallel for' | 'target teams distribute parallel 2259 /// for simd' | 'target teams distribute simd' {clause} 2260 /// annot_pragma_openmp_end 2261 /// 2262 StmtResult 2263 Parser::ParseOpenMPDeclarativeOrExecutableDirective(ParsedStmtContext StmtCtx) { 2264 assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!"); 2265 ParsingOpenMPDirectiveRAII DirScope(*this); 2266 ParenBraceBracketBalancer BalancerRAIIObj(*this); 2267 SmallVector<OMPClause *, 5> Clauses; 2268 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 2269 llvm::omp::Clause_enumSize + 1> 2270 FirstClauses(llvm::omp::Clause_enumSize + 1); 2271 unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope | 2272 Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope; 2273 SourceLocation Loc = ConsumeAnnotationToken(), EndLoc; 2274 OpenMPDirectiveKind DKind = parseOpenMPDirectiveKind(*this); 2275 OpenMPDirectiveKind CancelRegion = OMPD_unknown; 2276 // Name of critical directive. 2277 DeclarationNameInfo DirName; 2278 StmtResult Directive = StmtError(); 2279 bool HasAssociatedStatement = true; 2280 2281 switch (DKind) { 2282 case OMPD_threadprivate: { 2283 // FIXME: Should this be permitted in C++? 2284 if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) == 2285 ParsedStmtContext()) { 2286 Diag(Tok, diag::err_omp_immediate_directive) 2287 << getOpenMPDirectiveName(DKind) << 0; 2288 } 2289 ConsumeToken(); 2290 DeclDirectiveListParserHelper Helper(this, DKind); 2291 if (!ParseOpenMPSimpleVarList(DKind, Helper, 2292 /*AllowScopeSpecifier=*/false)) { 2293 skipUntilPragmaOpenMPEnd(DKind); 2294 DeclGroupPtrTy Res = Actions.ActOnOpenMPThreadprivateDirective( 2295 Loc, Helper.getIdentifiers()); 2296 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2297 } 2298 SkipUntil(tok::annot_pragma_openmp_end); 2299 break; 2300 } 2301 case OMPD_allocate: { 2302 // FIXME: Should this be permitted in C++? 2303 if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) == 2304 ParsedStmtContext()) { 2305 Diag(Tok, diag::err_omp_immediate_directive) 2306 << getOpenMPDirectiveName(DKind) << 0; 2307 } 2308 ConsumeToken(); 2309 DeclDirectiveListParserHelper Helper(this, DKind); 2310 if (!ParseOpenMPSimpleVarList(DKind, Helper, 2311 /*AllowScopeSpecifier=*/false)) { 2312 SmallVector<OMPClause *, 1> Clauses; 2313 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 2314 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 2315 llvm::omp::Clause_enumSize + 1> 2316 FirstClauses(llvm::omp::Clause_enumSize + 1); 2317 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2318 OpenMPClauseKind CKind = 2319 Tok.isAnnotation() ? OMPC_unknown 2320 : getOpenMPClauseKind(PP.getSpelling(Tok)); 2321 Actions.StartOpenMPClause(CKind); 2322 OMPClause *Clause = ParseOpenMPClause( 2323 OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt()); 2324 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 2325 StopBeforeMatch); 2326 FirstClauses[unsigned(CKind)].setInt(true); 2327 if (Clause != nullptr) 2328 Clauses.push_back(Clause); 2329 if (Tok.is(tok::annot_pragma_openmp_end)) { 2330 Actions.EndOpenMPClause(); 2331 break; 2332 } 2333 // Skip ',' if any. 2334 if (Tok.is(tok::comma)) 2335 ConsumeToken(); 2336 Actions.EndOpenMPClause(); 2337 } 2338 skipUntilPragmaOpenMPEnd(DKind); 2339 } 2340 DeclGroupPtrTy Res = Actions.ActOnOpenMPAllocateDirective( 2341 Loc, Helper.getIdentifiers(), Clauses); 2342 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2343 } 2344 SkipUntil(tok::annot_pragma_openmp_end); 2345 break; 2346 } 2347 case OMPD_declare_reduction: 2348 ConsumeToken(); 2349 if (DeclGroupPtrTy Res = 2350 ParseOpenMPDeclareReductionDirective(/*AS=*/AS_none)) { 2351 skipUntilPragmaOpenMPEnd(OMPD_declare_reduction); 2352 ConsumeAnyToken(); 2353 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2354 } else { 2355 SkipUntil(tok::annot_pragma_openmp_end); 2356 } 2357 break; 2358 case OMPD_declare_mapper: { 2359 ConsumeToken(); 2360 if (DeclGroupPtrTy Res = 2361 ParseOpenMPDeclareMapperDirective(/*AS=*/AS_none)) { 2362 // Skip the last annot_pragma_openmp_end. 2363 ConsumeAnnotationToken(); 2364 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2365 } else { 2366 SkipUntil(tok::annot_pragma_openmp_end); 2367 } 2368 break; 2369 } 2370 case OMPD_flush: 2371 case OMPD_depobj: 2372 case OMPD_scan: 2373 case OMPD_taskyield: 2374 case OMPD_barrier: 2375 case OMPD_taskwait: 2376 case OMPD_cancellation_point: 2377 case OMPD_cancel: 2378 case OMPD_target_enter_data: 2379 case OMPD_target_exit_data: 2380 case OMPD_target_update: 2381 case OMPD_interop: 2382 if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) == 2383 ParsedStmtContext()) { 2384 Diag(Tok, diag::err_omp_immediate_directive) 2385 << getOpenMPDirectiveName(DKind) << 0; 2386 } 2387 HasAssociatedStatement = false; 2388 // Fall through for further analysis. 2389 LLVM_FALLTHROUGH; 2390 case OMPD_parallel: 2391 case OMPD_simd: 2392 case OMPD_tile: 2393 case OMPD_for: 2394 case OMPD_for_simd: 2395 case OMPD_sections: 2396 case OMPD_single: 2397 case OMPD_section: 2398 case OMPD_master: 2399 case OMPD_critical: 2400 case OMPD_parallel_for: 2401 case OMPD_parallel_for_simd: 2402 case OMPD_parallel_sections: 2403 case OMPD_parallel_master: 2404 case OMPD_task: 2405 case OMPD_ordered: 2406 case OMPD_atomic: 2407 case OMPD_target: 2408 case OMPD_teams: 2409 case OMPD_taskgroup: 2410 case OMPD_target_data: 2411 case OMPD_target_parallel: 2412 case OMPD_target_parallel_for: 2413 case OMPD_taskloop: 2414 case OMPD_taskloop_simd: 2415 case OMPD_master_taskloop: 2416 case OMPD_master_taskloop_simd: 2417 case OMPD_parallel_master_taskloop: 2418 case OMPD_parallel_master_taskloop_simd: 2419 case OMPD_distribute: 2420 case OMPD_distribute_parallel_for: 2421 case OMPD_distribute_parallel_for_simd: 2422 case OMPD_distribute_simd: 2423 case OMPD_target_parallel_for_simd: 2424 case OMPD_target_simd: 2425 case OMPD_teams_distribute: 2426 case OMPD_teams_distribute_simd: 2427 case OMPD_teams_distribute_parallel_for_simd: 2428 case OMPD_teams_distribute_parallel_for: 2429 case OMPD_target_teams: 2430 case OMPD_target_teams_distribute: 2431 case OMPD_target_teams_distribute_parallel_for: 2432 case OMPD_target_teams_distribute_parallel_for_simd: 2433 case OMPD_target_teams_distribute_simd: { 2434 // Special processing for flush and depobj clauses. 2435 Token ImplicitTok; 2436 bool ImplicitClauseAllowed = false; 2437 if (DKind == OMPD_flush || DKind == OMPD_depobj) { 2438 ImplicitTok = Tok; 2439 ImplicitClauseAllowed = true; 2440 } 2441 ConsumeToken(); 2442 // Parse directive name of the 'critical' directive if any. 2443 if (DKind == OMPD_critical) { 2444 BalancedDelimiterTracker T(*this, tok::l_paren, 2445 tok::annot_pragma_openmp_end); 2446 if (!T.consumeOpen()) { 2447 if (Tok.isAnyIdentifier()) { 2448 DirName = 2449 DeclarationNameInfo(Tok.getIdentifierInfo(), Tok.getLocation()); 2450 ConsumeAnyToken(); 2451 } else { 2452 Diag(Tok, diag::err_omp_expected_identifier_for_critical); 2453 } 2454 T.consumeClose(); 2455 } 2456 } else if (DKind == OMPD_cancellation_point || DKind == OMPD_cancel) { 2457 CancelRegion = parseOpenMPDirectiveKind(*this); 2458 if (Tok.isNot(tok::annot_pragma_openmp_end)) 2459 ConsumeToken(); 2460 } 2461 2462 if (isOpenMPLoopDirective(DKind)) 2463 ScopeFlags |= Scope::OpenMPLoopDirectiveScope; 2464 if (isOpenMPSimdDirective(DKind)) 2465 ScopeFlags |= Scope::OpenMPSimdDirectiveScope; 2466 ParseScope OMPDirectiveScope(this, ScopeFlags); 2467 Actions.StartOpenMPDSABlock(DKind, DirName, Actions.getCurScope(), Loc); 2468 2469 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2470 bool HasImplicitClause = false; 2471 if (ImplicitClauseAllowed && Tok.is(tok::l_paren)) { 2472 HasImplicitClause = true; 2473 // Push copy of the current token back to stream to properly parse 2474 // pseudo-clause OMPFlushClause or OMPDepobjClause. 2475 PP.EnterToken(Tok, /*IsReinject*/ true); 2476 PP.EnterToken(ImplicitTok, /*IsReinject*/ true); 2477 ConsumeAnyToken(); 2478 } 2479 OpenMPClauseKind CKind = Tok.isAnnotation() 2480 ? OMPC_unknown 2481 : getOpenMPClauseKind(PP.getSpelling(Tok)); 2482 if (HasImplicitClause) { 2483 assert(CKind == OMPC_unknown && "Must be unknown implicit clause."); 2484 if (DKind == OMPD_flush) { 2485 CKind = OMPC_flush; 2486 } else { 2487 assert(DKind == OMPD_depobj && 2488 "Expected flush or depobj directives."); 2489 CKind = OMPC_depobj; 2490 } 2491 } 2492 // No more implicit clauses allowed. 2493 ImplicitClauseAllowed = false; 2494 Actions.StartOpenMPClause(CKind); 2495 HasImplicitClause = false; 2496 OMPClause *Clause = ParseOpenMPClause( 2497 DKind, CKind, !FirstClauses[unsigned(CKind)].getInt()); 2498 FirstClauses[unsigned(CKind)].setInt(true); 2499 if (Clause) { 2500 FirstClauses[unsigned(CKind)].setPointer(Clause); 2501 Clauses.push_back(Clause); 2502 } 2503 2504 // Skip ',' if any. 2505 if (Tok.is(tok::comma)) 2506 ConsumeToken(); 2507 Actions.EndOpenMPClause(); 2508 } 2509 // End location of the directive. 2510 EndLoc = Tok.getLocation(); 2511 // Consume final annot_pragma_openmp_end. 2512 ConsumeAnnotationToken(); 2513 2514 // OpenMP [2.13.8, ordered Construct, Syntax] 2515 // If the depend clause is specified, the ordered construct is a stand-alone 2516 // directive. 2517 if (DKind == OMPD_ordered && FirstClauses[unsigned(OMPC_depend)].getInt()) { 2518 if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) == 2519 ParsedStmtContext()) { 2520 Diag(Loc, diag::err_omp_immediate_directive) 2521 << getOpenMPDirectiveName(DKind) << 1 2522 << getOpenMPClauseName(OMPC_depend); 2523 } 2524 HasAssociatedStatement = false; 2525 } 2526 2527 if (DKind == OMPD_tile && !FirstClauses[unsigned(OMPC_sizes)].getInt()) { 2528 Diag(Loc, diag::err_omp_required_clause) 2529 << getOpenMPDirectiveName(OMPD_tile) << "sizes"; 2530 } 2531 2532 StmtResult AssociatedStmt; 2533 if (HasAssociatedStatement) { 2534 // The body is a block scope like in Lambdas and Blocks. 2535 Actions.ActOnOpenMPRegionStart(DKind, getCurScope()); 2536 // FIXME: We create a bogus CompoundStmt scope to hold the contents of 2537 // the captured region. Code elsewhere assumes that any FunctionScopeInfo 2538 // should have at least one compound statement scope within it. 2539 ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false); 2540 { 2541 Sema::CompoundScopeRAII Scope(Actions); 2542 AssociatedStmt = ParseStatement(); 2543 2544 if (AssociatedStmt.isUsable() && isOpenMPLoopDirective(DKind) && 2545 getLangOpts().OpenMPIRBuilder) 2546 AssociatedStmt = 2547 Actions.ActOnOpenMPCanonicalLoop(AssociatedStmt.get()); 2548 } 2549 AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses); 2550 } else if (DKind == OMPD_target_update || DKind == OMPD_target_enter_data || 2551 DKind == OMPD_target_exit_data) { 2552 Actions.ActOnOpenMPRegionStart(DKind, getCurScope()); 2553 AssociatedStmt = (Sema::CompoundScopeRAII(Actions), 2554 Actions.ActOnCompoundStmt(Loc, Loc, llvm::None, 2555 /*isStmtExpr=*/false)); 2556 AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses); 2557 } 2558 Directive = Actions.ActOnOpenMPExecutableDirective( 2559 DKind, DirName, CancelRegion, Clauses, AssociatedStmt.get(), Loc, 2560 EndLoc); 2561 2562 // Exit scope. 2563 Actions.EndOpenMPDSABlock(Directive.get()); 2564 OMPDirectiveScope.Exit(); 2565 break; 2566 } 2567 case OMPD_declare_simd: 2568 case OMPD_declare_target: 2569 case OMPD_end_declare_target: 2570 case OMPD_requires: 2571 case OMPD_begin_declare_variant: 2572 case OMPD_end_declare_variant: 2573 case OMPD_declare_variant: 2574 Diag(Tok, diag::err_omp_unexpected_directive) 2575 << 1 << getOpenMPDirectiveName(DKind); 2576 SkipUntil(tok::annot_pragma_openmp_end); 2577 break; 2578 case OMPD_unknown: 2579 default: 2580 Diag(Tok, diag::err_omp_unknown_directive); 2581 SkipUntil(tok::annot_pragma_openmp_end); 2582 break; 2583 } 2584 return Directive; 2585 } 2586 2587 // Parses simple list: 2588 // simple-variable-list: 2589 // '(' id-expression {, id-expression} ')' 2590 // 2591 bool Parser::ParseOpenMPSimpleVarList( 2592 OpenMPDirectiveKind Kind, 2593 const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)> 2594 &Callback, 2595 bool AllowScopeSpecifier) { 2596 // Parse '('. 2597 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2598 if (T.expectAndConsume(diag::err_expected_lparen_after, 2599 getOpenMPDirectiveName(Kind).data())) 2600 return true; 2601 bool IsCorrect = true; 2602 bool NoIdentIsFound = true; 2603 2604 // Read tokens while ')' or annot_pragma_openmp_end is not found. 2605 while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) { 2606 CXXScopeSpec SS; 2607 UnqualifiedId Name; 2608 // Read var name. 2609 Token PrevTok = Tok; 2610 NoIdentIsFound = false; 2611 2612 if (AllowScopeSpecifier && getLangOpts().CPlusPlus && 2613 ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr, 2614 /*ObjectHadErrors=*/false, false)) { 2615 IsCorrect = false; 2616 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2617 StopBeforeMatch); 2618 } else if (ParseUnqualifiedId(SS, /*ObjectType=*/nullptr, 2619 /*ObjectHadErrors=*/false, false, false, 2620 false, false, nullptr, Name)) { 2621 IsCorrect = false; 2622 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2623 StopBeforeMatch); 2624 } else if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren) && 2625 Tok.isNot(tok::annot_pragma_openmp_end)) { 2626 IsCorrect = false; 2627 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2628 StopBeforeMatch); 2629 Diag(PrevTok.getLocation(), diag::err_expected) 2630 << tok::identifier 2631 << SourceRange(PrevTok.getLocation(), PrevTokLocation); 2632 } else { 2633 Callback(SS, Actions.GetNameFromUnqualifiedId(Name)); 2634 } 2635 // Consume ','. 2636 if (Tok.is(tok::comma)) { 2637 ConsumeToken(); 2638 } 2639 } 2640 2641 if (NoIdentIsFound) { 2642 Diag(Tok, diag::err_expected) << tok::identifier; 2643 IsCorrect = false; 2644 } 2645 2646 // Parse ')'. 2647 IsCorrect = !T.consumeClose() && IsCorrect; 2648 2649 return !IsCorrect; 2650 } 2651 2652 OMPClause *Parser::ParseOpenMPSizesClause() { 2653 SourceLocation ClauseNameLoc = ConsumeToken(); 2654 SmallVector<Expr *, 4> ValExprs; 2655 2656 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2657 if (T.consumeOpen()) { 2658 Diag(Tok, diag::err_expected) << tok::l_paren; 2659 return nullptr; 2660 } 2661 2662 while (true) { 2663 ExprResult Val = ParseConstantExpression(); 2664 if (!Val.isUsable()) { 2665 T.skipToEnd(); 2666 return nullptr; 2667 } 2668 2669 ValExprs.push_back(Val.get()); 2670 2671 if (Tok.is(tok::r_paren) || Tok.is(tok::annot_pragma_openmp_end)) 2672 break; 2673 2674 ExpectAndConsume(tok::comma); 2675 } 2676 2677 T.consumeClose(); 2678 2679 return Actions.ActOnOpenMPSizesClause( 2680 ValExprs, ClauseNameLoc, T.getOpenLocation(), T.getCloseLocation()); 2681 } 2682 2683 OMPClause *Parser::ParseOpenMPUsesAllocatorClause(OpenMPDirectiveKind DKind) { 2684 SourceLocation Loc = Tok.getLocation(); 2685 ConsumeAnyToken(); 2686 2687 // Parse '('. 2688 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2689 if (T.expectAndConsume(diag::err_expected_lparen_after, "uses_allocator")) 2690 return nullptr; 2691 SmallVector<Sema::UsesAllocatorsData, 4> Data; 2692 do { 2693 ExprResult Allocator = ParseCXXIdExpression(); 2694 if (Allocator.isInvalid()) { 2695 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2696 StopBeforeMatch); 2697 break; 2698 } 2699 Sema::UsesAllocatorsData &D = Data.emplace_back(); 2700 D.Allocator = Allocator.get(); 2701 if (Tok.is(tok::l_paren)) { 2702 BalancedDelimiterTracker T(*this, tok::l_paren, 2703 tok::annot_pragma_openmp_end); 2704 T.consumeOpen(); 2705 ExprResult AllocatorTraits = ParseCXXIdExpression(); 2706 T.consumeClose(); 2707 if (AllocatorTraits.isInvalid()) { 2708 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2709 StopBeforeMatch); 2710 break; 2711 } 2712 D.AllocatorTraits = AllocatorTraits.get(); 2713 D.LParenLoc = T.getOpenLocation(); 2714 D.RParenLoc = T.getCloseLocation(); 2715 } 2716 if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren)) 2717 Diag(Tok, diag::err_omp_expected_punc) << "uses_allocators" << 0; 2718 // Parse ',' 2719 if (Tok.is(tok::comma)) 2720 ConsumeAnyToken(); 2721 } while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)); 2722 T.consumeClose(); 2723 return Actions.ActOnOpenMPUsesAllocatorClause(Loc, T.getOpenLocation(), 2724 T.getCloseLocation(), Data); 2725 } 2726 2727 /// Parsing of OpenMP clauses. 2728 /// 2729 /// clause: 2730 /// if-clause | final-clause | num_threads-clause | safelen-clause | 2731 /// default-clause | private-clause | firstprivate-clause | shared-clause 2732 /// | linear-clause | aligned-clause | collapse-clause | 2733 /// lastprivate-clause | reduction-clause | proc_bind-clause | 2734 /// schedule-clause | copyin-clause | copyprivate-clause | untied-clause | 2735 /// mergeable-clause | flush-clause | read-clause | write-clause | 2736 /// update-clause | capture-clause | seq_cst-clause | device-clause | 2737 /// simdlen-clause | threads-clause | simd-clause | num_teams-clause | 2738 /// thread_limit-clause | priority-clause | grainsize-clause | 2739 /// nogroup-clause | num_tasks-clause | hint-clause | to-clause | 2740 /// from-clause | is_device_ptr-clause | task_reduction-clause | 2741 /// in_reduction-clause | allocator-clause | allocate-clause | 2742 /// acq_rel-clause | acquire-clause | release-clause | relaxed-clause | 2743 /// depobj-clause | destroy-clause | detach-clause | inclusive-clause | 2744 /// exclusive-clause | uses_allocators-clause | use_device_addr-clause 2745 /// 2746 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind, 2747 OpenMPClauseKind CKind, bool FirstClause) { 2748 OMPClauseKind = CKind; 2749 OMPClause *Clause = nullptr; 2750 bool ErrorFound = false; 2751 bool WrongDirective = false; 2752 // Check if clause is allowed for the given directive. 2753 if (CKind != OMPC_unknown && 2754 !isAllowedClauseForDirective(DKind, CKind, getLangOpts().OpenMP)) { 2755 Diag(Tok, diag::err_omp_unexpected_clause) 2756 << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind); 2757 ErrorFound = true; 2758 WrongDirective = true; 2759 } 2760 2761 switch (CKind) { 2762 case OMPC_final: 2763 case OMPC_num_threads: 2764 case OMPC_safelen: 2765 case OMPC_simdlen: 2766 case OMPC_collapse: 2767 case OMPC_ordered: 2768 case OMPC_num_teams: 2769 case OMPC_thread_limit: 2770 case OMPC_priority: 2771 case OMPC_grainsize: 2772 case OMPC_num_tasks: 2773 case OMPC_hint: 2774 case OMPC_allocator: 2775 case OMPC_depobj: 2776 case OMPC_detach: 2777 // OpenMP [2.5, Restrictions] 2778 // At most one num_threads clause can appear on the directive. 2779 // OpenMP [2.8.1, simd construct, Restrictions] 2780 // Only one safelen clause can appear on a simd directive. 2781 // Only one simdlen clause can appear on a simd directive. 2782 // Only one collapse clause can appear on a simd directive. 2783 // OpenMP [2.11.1, task Construct, Restrictions] 2784 // At most one if clause can appear on the directive. 2785 // At most one final clause can appear on the directive. 2786 // OpenMP [teams Construct, Restrictions] 2787 // At most one num_teams clause can appear on the directive. 2788 // At most one thread_limit clause can appear on the directive. 2789 // OpenMP [2.9.1, task Construct, Restrictions] 2790 // At most one priority clause can appear on the directive. 2791 // OpenMP [2.9.2, taskloop Construct, Restrictions] 2792 // At most one grainsize clause can appear on the directive. 2793 // OpenMP [2.9.2, taskloop Construct, Restrictions] 2794 // At most one num_tasks clause can appear on the directive. 2795 // OpenMP [2.11.3, allocate Directive, Restrictions] 2796 // At most one allocator clause can appear on the directive. 2797 // OpenMP 5.0, 2.10.1 task Construct, Restrictions. 2798 // At most one detach clause can appear on the directive. 2799 if (!FirstClause) { 2800 Diag(Tok, diag::err_omp_more_one_clause) 2801 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2802 ErrorFound = true; 2803 } 2804 2805 if (CKind == OMPC_ordered && PP.LookAhead(/*N=*/0).isNot(tok::l_paren)) 2806 Clause = ParseOpenMPClause(CKind, WrongDirective); 2807 else 2808 Clause = ParseOpenMPSingleExprClause(CKind, WrongDirective); 2809 break; 2810 case OMPC_default: 2811 case OMPC_proc_bind: 2812 case OMPC_atomic_default_mem_order: 2813 case OMPC_order: 2814 // OpenMP [2.14.3.1, Restrictions] 2815 // Only a single default clause may be specified on a parallel, task or 2816 // teams directive. 2817 // OpenMP [2.5, parallel Construct, Restrictions] 2818 // At most one proc_bind clause can appear on the directive. 2819 // OpenMP [5.0, Requires directive, Restrictions] 2820 // At most one atomic_default_mem_order clause can appear 2821 // on the directive 2822 if (!FirstClause && CKind != OMPC_order) { 2823 Diag(Tok, diag::err_omp_more_one_clause) 2824 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2825 ErrorFound = true; 2826 } 2827 2828 Clause = ParseOpenMPSimpleClause(CKind, WrongDirective); 2829 break; 2830 case OMPC_device: 2831 case OMPC_schedule: 2832 case OMPC_dist_schedule: 2833 case OMPC_defaultmap: 2834 // OpenMP [2.7.1, Restrictions, p. 3] 2835 // Only one schedule clause can appear on a loop directive. 2836 // OpenMP 4.5 [2.10.4, Restrictions, p. 106] 2837 // At most one defaultmap clause can appear on the directive. 2838 // OpenMP 5.0 [2.12.5, target construct, Restrictions] 2839 // At most one device clause can appear on the directive. 2840 if ((getLangOpts().OpenMP < 50 || CKind != OMPC_defaultmap) && 2841 !FirstClause) { 2842 Diag(Tok, diag::err_omp_more_one_clause) 2843 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2844 ErrorFound = true; 2845 } 2846 LLVM_FALLTHROUGH; 2847 case OMPC_if: 2848 Clause = ParseOpenMPSingleExprWithArgClause(DKind, CKind, WrongDirective); 2849 break; 2850 case OMPC_nowait: 2851 case OMPC_untied: 2852 case OMPC_mergeable: 2853 case OMPC_read: 2854 case OMPC_write: 2855 case OMPC_capture: 2856 case OMPC_seq_cst: 2857 case OMPC_acq_rel: 2858 case OMPC_acquire: 2859 case OMPC_release: 2860 case OMPC_relaxed: 2861 case OMPC_threads: 2862 case OMPC_simd: 2863 case OMPC_nogroup: 2864 case OMPC_unified_address: 2865 case OMPC_unified_shared_memory: 2866 case OMPC_reverse_offload: 2867 case OMPC_dynamic_allocators: 2868 // OpenMP [2.7.1, Restrictions, p. 9] 2869 // Only one ordered clause can appear on a loop directive. 2870 // OpenMP [2.7.1, Restrictions, C/C++, p. 4] 2871 // Only one nowait clause can appear on a for directive. 2872 // OpenMP [5.0, Requires directive, Restrictions] 2873 // Each of the requires clauses can appear at most once on the directive. 2874 if (!FirstClause) { 2875 Diag(Tok, diag::err_omp_more_one_clause) 2876 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2877 ErrorFound = true; 2878 } 2879 2880 Clause = ParseOpenMPClause(CKind, WrongDirective); 2881 break; 2882 case OMPC_update: 2883 if (!FirstClause) { 2884 Diag(Tok, diag::err_omp_more_one_clause) 2885 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2886 ErrorFound = true; 2887 } 2888 2889 Clause = (DKind == OMPD_depobj) 2890 ? ParseOpenMPSimpleClause(CKind, WrongDirective) 2891 : ParseOpenMPClause(CKind, WrongDirective); 2892 break; 2893 case OMPC_private: 2894 case OMPC_firstprivate: 2895 case OMPC_lastprivate: 2896 case OMPC_shared: 2897 case OMPC_reduction: 2898 case OMPC_task_reduction: 2899 case OMPC_in_reduction: 2900 case OMPC_linear: 2901 case OMPC_aligned: 2902 case OMPC_copyin: 2903 case OMPC_copyprivate: 2904 case OMPC_flush: 2905 case OMPC_depend: 2906 case OMPC_map: 2907 case OMPC_to: 2908 case OMPC_from: 2909 case OMPC_use_device_ptr: 2910 case OMPC_use_device_addr: 2911 case OMPC_is_device_ptr: 2912 case OMPC_allocate: 2913 case OMPC_nontemporal: 2914 case OMPC_inclusive: 2915 case OMPC_exclusive: 2916 case OMPC_affinity: 2917 Clause = ParseOpenMPVarListClause(DKind, CKind, WrongDirective); 2918 break; 2919 case OMPC_sizes: 2920 if (!FirstClause) { 2921 Diag(Tok, diag::err_omp_more_one_clause) 2922 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2923 ErrorFound = true; 2924 } 2925 2926 Clause = ParseOpenMPSizesClause(); 2927 break; 2928 case OMPC_uses_allocators: 2929 Clause = ParseOpenMPUsesAllocatorClause(DKind); 2930 break; 2931 case OMPC_destroy: 2932 if (DKind != OMPD_interop) { 2933 if (!FirstClause) { 2934 Diag(Tok, diag::err_omp_more_one_clause) 2935 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2936 ErrorFound = true; 2937 } 2938 Clause = ParseOpenMPClause(CKind, WrongDirective); 2939 break; 2940 } 2941 LLVM_FALLTHROUGH; 2942 case OMPC_init: 2943 case OMPC_use: 2944 Clause = ParseOpenMPInteropClause(CKind, WrongDirective); 2945 break; 2946 case OMPC_device_type: 2947 case OMPC_unknown: 2948 skipUntilPragmaOpenMPEnd(DKind); 2949 break; 2950 case OMPC_threadprivate: 2951 case OMPC_uniform: 2952 case OMPC_match: 2953 if (!WrongDirective) 2954 Diag(Tok, diag::err_omp_unexpected_clause) 2955 << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind); 2956 SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch); 2957 break; 2958 default: 2959 break; 2960 } 2961 return ErrorFound ? nullptr : Clause; 2962 } 2963 2964 /// Parses simple expression in parens for single-expression clauses of OpenMP 2965 /// constructs. 2966 /// \param RLoc Returned location of right paren. 2967 ExprResult Parser::ParseOpenMPParensExpr(StringRef ClauseName, 2968 SourceLocation &RLoc, 2969 bool IsAddressOfOperand) { 2970 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2971 if (T.expectAndConsume(diag::err_expected_lparen_after, ClauseName.data())) 2972 return ExprError(); 2973 2974 SourceLocation ELoc = Tok.getLocation(); 2975 ExprResult LHS( 2976 ParseCastExpression(AnyCastExpr, IsAddressOfOperand, NotTypeCast)); 2977 ExprResult Val(ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 2978 Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false); 2979 2980 // Parse ')'. 2981 RLoc = Tok.getLocation(); 2982 if (!T.consumeClose()) 2983 RLoc = T.getCloseLocation(); 2984 2985 return Val; 2986 } 2987 2988 /// Parsing of OpenMP clauses with single expressions like 'final', 2989 /// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams', 2990 /// 'thread_limit', 'simdlen', 'priority', 'grainsize', 'num_tasks', 'hint' or 2991 /// 'detach'. 2992 /// 2993 /// final-clause: 2994 /// 'final' '(' expression ')' 2995 /// 2996 /// num_threads-clause: 2997 /// 'num_threads' '(' expression ')' 2998 /// 2999 /// safelen-clause: 3000 /// 'safelen' '(' expression ')' 3001 /// 3002 /// simdlen-clause: 3003 /// 'simdlen' '(' expression ')' 3004 /// 3005 /// collapse-clause: 3006 /// 'collapse' '(' expression ')' 3007 /// 3008 /// priority-clause: 3009 /// 'priority' '(' expression ')' 3010 /// 3011 /// grainsize-clause: 3012 /// 'grainsize' '(' expression ')' 3013 /// 3014 /// num_tasks-clause: 3015 /// 'num_tasks' '(' expression ')' 3016 /// 3017 /// hint-clause: 3018 /// 'hint' '(' expression ')' 3019 /// 3020 /// allocator-clause: 3021 /// 'allocator' '(' expression ')' 3022 /// 3023 /// detach-clause: 3024 /// 'detach' '(' event-handler-expression ')' 3025 /// 3026 OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind, 3027 bool ParseOnly) { 3028 SourceLocation Loc = ConsumeToken(); 3029 SourceLocation LLoc = Tok.getLocation(); 3030 SourceLocation RLoc; 3031 3032 ExprResult Val = ParseOpenMPParensExpr(getOpenMPClauseName(Kind), RLoc); 3033 3034 if (Val.isInvalid()) 3035 return nullptr; 3036 3037 if (ParseOnly) 3038 return nullptr; 3039 return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc); 3040 } 3041 3042 /// Parsing of OpenMP clauses that use an interop-var. 3043 /// 3044 /// init-clause: 3045 /// init([interop-modifier, ]interop-type[[, interop-type] ... ]:interop-var) 3046 /// 3047 /// destroy-clause: 3048 /// destroy(interop-var) 3049 /// 3050 /// use-clause: 3051 /// use(interop-var) 3052 /// 3053 /// interop-modifier: 3054 /// prefer_type(preference-list) 3055 /// 3056 /// preference-list: 3057 /// foreign-runtime-id [, foreign-runtime-id]... 3058 /// 3059 /// foreign-runtime-id: 3060 /// <string-literal> | <constant-integral-expression> 3061 /// 3062 /// interop-type: 3063 /// target | targetsync 3064 /// 3065 OMPClause *Parser::ParseOpenMPInteropClause(OpenMPClauseKind Kind, 3066 bool ParseOnly) { 3067 SourceLocation Loc = ConsumeToken(); 3068 // Parse '('. 3069 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3070 if (T.expectAndConsume(diag::err_expected_lparen_after, 3071 getOpenMPClauseName(Kind).data())) 3072 return nullptr; 3073 3074 bool IsTarget = false; 3075 bool IsTargetSync = false; 3076 SmallVector<Expr *, 4> Prefs; 3077 3078 if (Kind == OMPC_init) { 3079 3080 // Parse optional interop-modifier. 3081 if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "prefer_type") { 3082 ConsumeToken(); 3083 BalancedDelimiterTracker PT(*this, tok::l_paren, 3084 tok::annot_pragma_openmp_end); 3085 if (PT.expectAndConsume(diag::err_expected_lparen_after, "prefer_type")) 3086 return nullptr; 3087 3088 while (Tok.isNot(tok::r_paren)) { 3089 SourceLocation Loc = Tok.getLocation(); 3090 ExprResult LHS = ParseCastExpression(AnyCastExpr); 3091 ExprResult PTExpr = Actions.CorrectDelayedTyposInExpr( 3092 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3093 PTExpr = Actions.ActOnFinishFullExpr(PTExpr.get(), Loc, 3094 /*DiscardedValue=*/false); 3095 if (PTExpr.isUsable()) 3096 Prefs.push_back(PTExpr.get()); 3097 else 3098 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3099 StopBeforeMatch); 3100 3101 if (Tok.is(tok::comma)) 3102 ConsumeToken(); 3103 } 3104 PT.consumeClose(); 3105 } 3106 3107 if (!Prefs.empty()) { 3108 if (Tok.is(tok::comma)) 3109 ConsumeToken(); 3110 else 3111 Diag(Tok, diag::err_omp_expected_punc_after_interop_mod); 3112 } 3113 3114 // Parse the interop-types. 3115 bool HasError = false; 3116 while (Tok.is(tok::identifier)) { 3117 if (PP.getSpelling(Tok) == "target") { 3118 // OpenMP 5.1 [2.15.1, interop Construct, Restrictions] 3119 // Each interop-type may be specified on an action-clause at most 3120 // once. 3121 if (IsTarget) 3122 Diag(Tok, diag::warn_omp_more_one_interop_type) << "target"; 3123 IsTarget = true; 3124 } else if (PP.getSpelling(Tok) == "targetsync") { 3125 if (IsTargetSync) 3126 Diag(Tok, diag::warn_omp_more_one_interop_type) << "targetsync"; 3127 IsTargetSync = true; 3128 } else { 3129 HasError = true; 3130 Diag(Tok, diag::err_omp_expected_interop_type); 3131 } 3132 ConsumeToken(); 3133 3134 if (!Tok.is(tok::comma)) 3135 break; 3136 ConsumeToken(); 3137 } 3138 if (!HasError && !IsTarget && !IsTargetSync) 3139 Diag(Tok, diag::err_omp_expected_interop_type); 3140 3141 if (Tok.is(tok::colon)) 3142 ConsumeToken(); 3143 else if (IsTarget || IsTargetSync) 3144 Diag(Tok, diag::warn_pragma_expected_colon) << "interop types"; 3145 } 3146 3147 // Parse the variable. 3148 SourceLocation VarLoc = Tok.getLocation(); 3149 ExprResult InteropVarExpr = 3150 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()); 3151 if (!InteropVarExpr.isUsable()) { 3152 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3153 StopBeforeMatch); 3154 } 3155 3156 // Parse ')'. 3157 SourceLocation RLoc = Tok.getLocation(); 3158 if (!T.consumeClose()) 3159 RLoc = T.getCloseLocation(); 3160 3161 if (ParseOnly || !InteropVarExpr.isUsable() || 3162 (Kind == OMPC_init && !IsTarget && !IsTargetSync)) 3163 return nullptr; 3164 3165 if (Kind == OMPC_init) 3166 return Actions.ActOnOpenMPInitClause(InteropVarExpr.get(), Prefs, IsTarget, 3167 IsTargetSync, Loc, T.getOpenLocation(), 3168 VarLoc, RLoc); 3169 if (Kind == OMPC_use) 3170 return Actions.ActOnOpenMPUseClause(InteropVarExpr.get(), Loc, 3171 T.getOpenLocation(), VarLoc, RLoc); 3172 3173 if (Kind == OMPC_destroy) 3174 return Actions.ActOnOpenMPDestroyClause(InteropVarExpr.get(), Loc, 3175 T.getOpenLocation(), VarLoc, RLoc); 3176 3177 llvm_unreachable("Unexpected interop variable clause."); 3178 } 3179 3180 /// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'. 3181 /// 3182 /// default-clause: 3183 /// 'default' '(' 'none' | 'shared' | 'firstprivate' ')' 3184 /// 3185 /// proc_bind-clause: 3186 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ')' 3187 /// 3188 /// update-clause: 3189 /// 'update' '(' 'in' | 'out' | 'inout' | 'mutexinoutset' ')' 3190 /// 3191 OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind, 3192 bool ParseOnly) { 3193 llvm::Optional<SimpleClauseData> Val = parseOpenMPSimpleClause(*this, Kind); 3194 if (!Val || ParseOnly) 3195 return nullptr; 3196 if (getLangOpts().OpenMP < 51 && Kind == OMPC_default && 3197 static_cast<DefaultKind>(Val.getValue().Type) == 3198 OMP_DEFAULT_firstprivate) { 3199 Diag(Val.getValue().LOpen, diag::err_omp_invalid_dsa) 3200 << getOpenMPClauseName(OMPC_firstprivate) 3201 << getOpenMPClauseName(OMPC_default) << "5.1"; 3202 return nullptr; 3203 } 3204 return Actions.ActOnOpenMPSimpleClause( 3205 Kind, Val.getValue().Type, Val.getValue().TypeLoc, Val.getValue().LOpen, 3206 Val.getValue().Loc, Val.getValue().RLoc); 3207 } 3208 3209 /// Parsing of OpenMP clauses like 'ordered'. 3210 /// 3211 /// ordered-clause: 3212 /// 'ordered' 3213 /// 3214 /// nowait-clause: 3215 /// 'nowait' 3216 /// 3217 /// untied-clause: 3218 /// 'untied' 3219 /// 3220 /// mergeable-clause: 3221 /// 'mergeable' 3222 /// 3223 /// read-clause: 3224 /// 'read' 3225 /// 3226 /// threads-clause: 3227 /// 'threads' 3228 /// 3229 /// simd-clause: 3230 /// 'simd' 3231 /// 3232 /// nogroup-clause: 3233 /// 'nogroup' 3234 /// 3235 OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly) { 3236 SourceLocation Loc = Tok.getLocation(); 3237 ConsumeAnyToken(); 3238 3239 if (ParseOnly) 3240 return nullptr; 3241 return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation()); 3242 } 3243 3244 /// Parsing of OpenMP clauses with single expressions and some additional 3245 /// argument like 'schedule' or 'dist_schedule'. 3246 /// 3247 /// schedule-clause: 3248 /// 'schedule' '(' [ modifier [ ',' modifier ] ':' ] kind [',' expression ] 3249 /// ')' 3250 /// 3251 /// if-clause: 3252 /// 'if' '(' [ directive-name-modifier ':' ] expression ')' 3253 /// 3254 /// defaultmap: 3255 /// 'defaultmap' '(' modifier [ ':' kind ] ')' 3256 /// 3257 /// device-clause: 3258 /// 'device' '(' [ device-modifier ':' ] expression ')' 3259 /// 3260 OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPDirectiveKind DKind, 3261 OpenMPClauseKind Kind, 3262 bool ParseOnly) { 3263 SourceLocation Loc = ConsumeToken(); 3264 SourceLocation DelimLoc; 3265 // Parse '('. 3266 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3267 if (T.expectAndConsume(diag::err_expected_lparen_after, 3268 getOpenMPClauseName(Kind).data())) 3269 return nullptr; 3270 3271 ExprResult Val; 3272 SmallVector<unsigned, 4> Arg; 3273 SmallVector<SourceLocation, 4> KLoc; 3274 if (Kind == OMPC_schedule) { 3275 enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements }; 3276 Arg.resize(NumberOfElements); 3277 KLoc.resize(NumberOfElements); 3278 Arg[Modifier1] = OMPC_SCHEDULE_MODIFIER_unknown; 3279 Arg[Modifier2] = OMPC_SCHEDULE_MODIFIER_unknown; 3280 Arg[ScheduleKind] = OMPC_SCHEDULE_unknown; 3281 unsigned KindModifier = getOpenMPSimpleClauseType( 3282 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3283 getLangOpts().OpenMP); 3284 if (KindModifier > OMPC_SCHEDULE_unknown) { 3285 // Parse 'modifier' 3286 Arg[Modifier1] = KindModifier; 3287 KLoc[Modifier1] = Tok.getLocation(); 3288 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3289 Tok.isNot(tok::annot_pragma_openmp_end)) 3290 ConsumeAnyToken(); 3291 if (Tok.is(tok::comma)) { 3292 // Parse ',' 'modifier' 3293 ConsumeAnyToken(); 3294 KindModifier = getOpenMPSimpleClauseType( 3295 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3296 getLangOpts().OpenMP); 3297 Arg[Modifier2] = KindModifier > OMPC_SCHEDULE_unknown 3298 ? KindModifier 3299 : (unsigned)OMPC_SCHEDULE_unknown; 3300 KLoc[Modifier2] = Tok.getLocation(); 3301 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3302 Tok.isNot(tok::annot_pragma_openmp_end)) 3303 ConsumeAnyToken(); 3304 } 3305 // Parse ':' 3306 if (Tok.is(tok::colon)) 3307 ConsumeAnyToken(); 3308 else 3309 Diag(Tok, diag::warn_pragma_expected_colon) << "schedule modifier"; 3310 KindModifier = getOpenMPSimpleClauseType( 3311 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3312 getLangOpts().OpenMP); 3313 } 3314 Arg[ScheduleKind] = KindModifier; 3315 KLoc[ScheduleKind] = Tok.getLocation(); 3316 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3317 Tok.isNot(tok::annot_pragma_openmp_end)) 3318 ConsumeAnyToken(); 3319 if ((Arg[ScheduleKind] == OMPC_SCHEDULE_static || 3320 Arg[ScheduleKind] == OMPC_SCHEDULE_dynamic || 3321 Arg[ScheduleKind] == OMPC_SCHEDULE_guided) && 3322 Tok.is(tok::comma)) 3323 DelimLoc = ConsumeAnyToken(); 3324 } else if (Kind == OMPC_dist_schedule) { 3325 Arg.push_back(getOpenMPSimpleClauseType( 3326 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3327 getLangOpts().OpenMP)); 3328 KLoc.push_back(Tok.getLocation()); 3329 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3330 Tok.isNot(tok::annot_pragma_openmp_end)) 3331 ConsumeAnyToken(); 3332 if (Arg.back() == OMPC_DIST_SCHEDULE_static && Tok.is(tok::comma)) 3333 DelimLoc = ConsumeAnyToken(); 3334 } else if (Kind == OMPC_defaultmap) { 3335 // Get a defaultmap modifier 3336 unsigned Modifier = getOpenMPSimpleClauseType( 3337 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3338 getLangOpts().OpenMP); 3339 // Set defaultmap modifier to unknown if it is either scalar, aggregate, or 3340 // pointer 3341 if (Modifier < OMPC_DEFAULTMAP_MODIFIER_unknown) 3342 Modifier = OMPC_DEFAULTMAP_MODIFIER_unknown; 3343 Arg.push_back(Modifier); 3344 KLoc.push_back(Tok.getLocation()); 3345 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3346 Tok.isNot(tok::annot_pragma_openmp_end)) 3347 ConsumeAnyToken(); 3348 // Parse ':' 3349 if (Tok.is(tok::colon) || getLangOpts().OpenMP < 50) { 3350 if (Tok.is(tok::colon)) 3351 ConsumeAnyToken(); 3352 else if (Arg.back() != OMPC_DEFAULTMAP_MODIFIER_unknown) 3353 Diag(Tok, diag::warn_pragma_expected_colon) << "defaultmap modifier"; 3354 // Get a defaultmap kind 3355 Arg.push_back(getOpenMPSimpleClauseType( 3356 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3357 getLangOpts().OpenMP)); 3358 KLoc.push_back(Tok.getLocation()); 3359 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3360 Tok.isNot(tok::annot_pragma_openmp_end)) 3361 ConsumeAnyToken(); 3362 } else { 3363 Arg.push_back(OMPC_DEFAULTMAP_unknown); 3364 KLoc.push_back(SourceLocation()); 3365 } 3366 } else if (Kind == OMPC_device) { 3367 // Only target executable directives support extended device construct. 3368 if (isOpenMPTargetExecutionDirective(DKind) && getLangOpts().OpenMP >= 50 && 3369 NextToken().is(tok::colon)) { 3370 // Parse optional <device modifier> ':' 3371 Arg.push_back(getOpenMPSimpleClauseType( 3372 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3373 getLangOpts().OpenMP)); 3374 KLoc.push_back(Tok.getLocation()); 3375 ConsumeAnyToken(); 3376 // Parse ':' 3377 ConsumeAnyToken(); 3378 } else { 3379 Arg.push_back(OMPC_DEVICE_unknown); 3380 KLoc.emplace_back(); 3381 } 3382 } else { 3383 assert(Kind == OMPC_if); 3384 KLoc.push_back(Tok.getLocation()); 3385 TentativeParsingAction TPA(*this); 3386 auto DK = parseOpenMPDirectiveKind(*this); 3387 Arg.push_back(DK); 3388 if (DK != OMPD_unknown) { 3389 ConsumeToken(); 3390 if (Tok.is(tok::colon) && getLangOpts().OpenMP > 40) { 3391 TPA.Commit(); 3392 DelimLoc = ConsumeToken(); 3393 } else { 3394 TPA.Revert(); 3395 Arg.back() = unsigned(OMPD_unknown); 3396 } 3397 } else { 3398 TPA.Revert(); 3399 } 3400 } 3401 3402 bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) || 3403 (Kind == OMPC_dist_schedule && DelimLoc.isValid()) || 3404 Kind == OMPC_if || Kind == OMPC_device; 3405 if (NeedAnExpression) { 3406 SourceLocation ELoc = Tok.getLocation(); 3407 ExprResult LHS(ParseCastExpression(AnyCastExpr, false, NotTypeCast)); 3408 Val = ParseRHSOfBinaryExpression(LHS, prec::Conditional); 3409 Val = 3410 Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false); 3411 } 3412 3413 // Parse ')'. 3414 SourceLocation RLoc = Tok.getLocation(); 3415 if (!T.consumeClose()) 3416 RLoc = T.getCloseLocation(); 3417 3418 if (NeedAnExpression && Val.isInvalid()) 3419 return nullptr; 3420 3421 if (ParseOnly) 3422 return nullptr; 3423 return Actions.ActOnOpenMPSingleExprWithArgClause( 3424 Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc, RLoc); 3425 } 3426 3427 static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec, 3428 UnqualifiedId &ReductionId) { 3429 if (ReductionIdScopeSpec.isEmpty()) { 3430 auto OOK = OO_None; 3431 switch (P.getCurToken().getKind()) { 3432 case tok::plus: 3433 OOK = OO_Plus; 3434 break; 3435 case tok::minus: 3436 OOK = OO_Minus; 3437 break; 3438 case tok::star: 3439 OOK = OO_Star; 3440 break; 3441 case tok::amp: 3442 OOK = OO_Amp; 3443 break; 3444 case tok::pipe: 3445 OOK = OO_Pipe; 3446 break; 3447 case tok::caret: 3448 OOK = OO_Caret; 3449 break; 3450 case tok::ampamp: 3451 OOK = OO_AmpAmp; 3452 break; 3453 case tok::pipepipe: 3454 OOK = OO_PipePipe; 3455 break; 3456 default: 3457 break; 3458 } 3459 if (OOK != OO_None) { 3460 SourceLocation OpLoc = P.ConsumeToken(); 3461 SourceLocation SymbolLocations[] = {OpLoc, OpLoc, SourceLocation()}; 3462 ReductionId.setOperatorFunctionId(OpLoc, OOK, SymbolLocations); 3463 return false; 3464 } 3465 } 3466 return P.ParseUnqualifiedId( 3467 ReductionIdScopeSpec, /*ObjectType=*/nullptr, 3468 /*ObjectHadErrors=*/false, /*EnteringContext*/ false, 3469 /*AllowDestructorName*/ false, 3470 /*AllowConstructorName*/ false, 3471 /*AllowDeductionGuide*/ false, nullptr, ReductionId); 3472 } 3473 3474 /// Checks if the token is a valid map-type-modifier. 3475 /// FIXME: It will return an OpenMPMapClauseKind if that's what it parses. 3476 static OpenMPMapModifierKind isMapModifier(Parser &P) { 3477 Token Tok = P.getCurToken(); 3478 if (!Tok.is(tok::identifier)) 3479 return OMPC_MAP_MODIFIER_unknown; 3480 3481 Preprocessor &PP = P.getPreprocessor(); 3482 OpenMPMapModifierKind TypeModifier = 3483 static_cast<OpenMPMapModifierKind>(getOpenMPSimpleClauseType( 3484 OMPC_map, PP.getSpelling(Tok), P.getLangOpts().OpenMP)); 3485 return TypeModifier; 3486 } 3487 3488 /// Parse the mapper modifier in map, to, and from clauses. 3489 bool Parser::parseMapperModifier(OpenMPVarListDataTy &Data) { 3490 // Parse '('. 3491 BalancedDelimiterTracker T(*this, tok::l_paren, tok::colon); 3492 if (T.expectAndConsume(diag::err_expected_lparen_after, "mapper")) { 3493 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3494 StopBeforeMatch); 3495 return true; 3496 } 3497 // Parse mapper-identifier 3498 if (getLangOpts().CPlusPlus) 3499 ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec, 3500 /*ObjectType=*/nullptr, 3501 /*ObjectHadErrors=*/false, 3502 /*EnteringContext=*/false); 3503 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) { 3504 Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier); 3505 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3506 StopBeforeMatch); 3507 return true; 3508 } 3509 auto &DeclNames = Actions.getASTContext().DeclarationNames; 3510 Data.ReductionOrMapperId = DeclarationNameInfo( 3511 DeclNames.getIdentifier(Tok.getIdentifierInfo()), Tok.getLocation()); 3512 ConsumeToken(); 3513 // Parse ')'. 3514 return T.consumeClose(); 3515 } 3516 3517 /// Parse map-type-modifiers in map clause. 3518 /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) 3519 /// where, map-type-modifier ::= always | close | mapper(mapper-identifier) | 3520 /// present 3521 bool Parser::parseMapTypeModifiers(OpenMPVarListDataTy &Data) { 3522 while (getCurToken().isNot(tok::colon)) { 3523 OpenMPMapModifierKind TypeModifier = isMapModifier(*this); 3524 if (TypeModifier == OMPC_MAP_MODIFIER_always || 3525 TypeModifier == OMPC_MAP_MODIFIER_close || 3526 TypeModifier == OMPC_MAP_MODIFIER_present) { 3527 Data.MapTypeModifiers.push_back(TypeModifier); 3528 Data.MapTypeModifiersLoc.push_back(Tok.getLocation()); 3529 ConsumeToken(); 3530 } else if (TypeModifier == OMPC_MAP_MODIFIER_mapper) { 3531 Data.MapTypeModifiers.push_back(TypeModifier); 3532 Data.MapTypeModifiersLoc.push_back(Tok.getLocation()); 3533 ConsumeToken(); 3534 if (parseMapperModifier(Data)) 3535 return true; 3536 } else { 3537 // For the case of unknown map-type-modifier or a map-type. 3538 // Map-type is followed by a colon; the function returns when it 3539 // encounters a token followed by a colon. 3540 if (Tok.is(tok::comma)) { 3541 Diag(Tok, diag::err_omp_map_type_modifier_missing); 3542 ConsumeToken(); 3543 continue; 3544 } 3545 // Potential map-type token as it is followed by a colon. 3546 if (PP.LookAhead(0).is(tok::colon)) 3547 return false; 3548 Diag(Tok, diag::err_omp_unknown_map_type_modifier) 3549 << (getLangOpts().OpenMP >= 51 ? 1 : 0); 3550 ConsumeToken(); 3551 } 3552 if (getCurToken().is(tok::comma)) 3553 ConsumeToken(); 3554 } 3555 return false; 3556 } 3557 3558 /// Checks if the token is a valid map-type. 3559 /// FIXME: It will return an OpenMPMapModifierKind if that's what it parses. 3560 static OpenMPMapClauseKind isMapType(Parser &P) { 3561 Token Tok = P.getCurToken(); 3562 // The map-type token can be either an identifier or the C++ delete keyword. 3563 if (!Tok.isOneOf(tok::identifier, tok::kw_delete)) 3564 return OMPC_MAP_unknown; 3565 Preprocessor &PP = P.getPreprocessor(); 3566 OpenMPMapClauseKind MapType = 3567 static_cast<OpenMPMapClauseKind>(getOpenMPSimpleClauseType( 3568 OMPC_map, PP.getSpelling(Tok), P.getLangOpts().OpenMP)); 3569 return MapType; 3570 } 3571 3572 /// Parse map-type in map clause. 3573 /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) 3574 /// where, map-type ::= to | from | tofrom | alloc | release | delete 3575 static void parseMapType(Parser &P, Parser::OpenMPVarListDataTy &Data) { 3576 Token Tok = P.getCurToken(); 3577 if (Tok.is(tok::colon)) { 3578 P.Diag(Tok, diag::err_omp_map_type_missing); 3579 return; 3580 } 3581 Data.ExtraModifier = isMapType(P); 3582 if (Data.ExtraModifier == OMPC_MAP_unknown) 3583 P.Diag(Tok, diag::err_omp_unknown_map_type); 3584 P.ConsumeToken(); 3585 } 3586 3587 /// Parses simple expression in parens for single-expression clauses of OpenMP 3588 /// constructs. 3589 ExprResult Parser::ParseOpenMPIteratorsExpr() { 3590 assert(Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator" && 3591 "Expected 'iterator' token."); 3592 SourceLocation IteratorKwLoc = ConsumeToken(); 3593 3594 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3595 if (T.expectAndConsume(diag::err_expected_lparen_after, "iterator")) 3596 return ExprError(); 3597 3598 SourceLocation LLoc = T.getOpenLocation(); 3599 SmallVector<Sema::OMPIteratorData, 4> Data; 3600 while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) { 3601 // Check if the type parsing is required. 3602 ParsedType IteratorType; 3603 if (Tok.isNot(tok::identifier) || NextToken().isNot(tok::equal)) { 3604 // identifier '=' is not found - parse type. 3605 TypeResult TR = ParseTypeName(); 3606 if (TR.isInvalid()) { 3607 T.skipToEnd(); 3608 return ExprError(); 3609 } 3610 IteratorType = TR.get(); 3611 } 3612 3613 // Parse identifier. 3614 IdentifierInfo *II = nullptr; 3615 SourceLocation IdLoc; 3616 if (Tok.is(tok::identifier)) { 3617 II = Tok.getIdentifierInfo(); 3618 IdLoc = ConsumeToken(); 3619 } else { 3620 Diag(Tok, diag::err_expected_unqualified_id) << 0; 3621 } 3622 3623 // Parse '='. 3624 SourceLocation AssignLoc; 3625 if (Tok.is(tok::equal)) 3626 AssignLoc = ConsumeToken(); 3627 else 3628 Diag(Tok, diag::err_omp_expected_equal_in_iterator); 3629 3630 // Parse range-specification - <begin> ':' <end> [ ':' <step> ] 3631 ColonProtectionRAIIObject ColonRAII(*this); 3632 // Parse <begin> 3633 SourceLocation Loc = Tok.getLocation(); 3634 ExprResult LHS = ParseCastExpression(AnyCastExpr); 3635 ExprResult Begin = Actions.CorrectDelayedTyposInExpr( 3636 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3637 Begin = Actions.ActOnFinishFullExpr(Begin.get(), Loc, 3638 /*DiscardedValue=*/false); 3639 // Parse ':'. 3640 SourceLocation ColonLoc; 3641 if (Tok.is(tok::colon)) 3642 ColonLoc = ConsumeToken(); 3643 3644 // Parse <end> 3645 Loc = Tok.getLocation(); 3646 LHS = ParseCastExpression(AnyCastExpr); 3647 ExprResult End = Actions.CorrectDelayedTyposInExpr( 3648 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3649 End = Actions.ActOnFinishFullExpr(End.get(), Loc, 3650 /*DiscardedValue=*/false); 3651 3652 SourceLocation SecColonLoc; 3653 ExprResult Step; 3654 // Parse optional step. 3655 if (Tok.is(tok::colon)) { 3656 // Parse ':' 3657 SecColonLoc = ConsumeToken(); 3658 // Parse <step> 3659 Loc = Tok.getLocation(); 3660 LHS = ParseCastExpression(AnyCastExpr); 3661 Step = Actions.CorrectDelayedTyposInExpr( 3662 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3663 Step = Actions.ActOnFinishFullExpr(Step.get(), Loc, 3664 /*DiscardedValue=*/false); 3665 } 3666 3667 // Parse ',' or ')' 3668 if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren)) 3669 Diag(Tok, diag::err_omp_expected_punc_after_iterator); 3670 if (Tok.is(tok::comma)) 3671 ConsumeToken(); 3672 3673 Sema::OMPIteratorData &D = Data.emplace_back(); 3674 D.DeclIdent = II; 3675 D.DeclIdentLoc = IdLoc; 3676 D.Type = IteratorType; 3677 D.AssignLoc = AssignLoc; 3678 D.ColonLoc = ColonLoc; 3679 D.SecColonLoc = SecColonLoc; 3680 D.Range.Begin = Begin.get(); 3681 D.Range.End = End.get(); 3682 D.Range.Step = Step.get(); 3683 } 3684 3685 // Parse ')'. 3686 SourceLocation RLoc = Tok.getLocation(); 3687 if (!T.consumeClose()) 3688 RLoc = T.getCloseLocation(); 3689 3690 return Actions.ActOnOMPIteratorExpr(getCurScope(), IteratorKwLoc, LLoc, RLoc, 3691 Data); 3692 } 3693 3694 /// Parses clauses with list. 3695 bool Parser::ParseOpenMPVarList(OpenMPDirectiveKind DKind, 3696 OpenMPClauseKind Kind, 3697 SmallVectorImpl<Expr *> &Vars, 3698 OpenMPVarListDataTy &Data) { 3699 UnqualifiedId UnqualifiedReductionId; 3700 bool InvalidReductionId = false; 3701 bool IsInvalidMapperModifier = false; 3702 3703 // Parse '('. 3704 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3705 if (T.expectAndConsume(diag::err_expected_lparen_after, 3706 getOpenMPClauseName(Kind).data())) 3707 return true; 3708 3709 bool HasIterator = false; 3710 bool NeedRParenForLinear = false; 3711 BalancedDelimiterTracker LinearT(*this, tok::l_paren, 3712 tok::annot_pragma_openmp_end); 3713 // Handle reduction-identifier for reduction clause. 3714 if (Kind == OMPC_reduction || Kind == OMPC_task_reduction || 3715 Kind == OMPC_in_reduction) { 3716 Data.ExtraModifier = OMPC_REDUCTION_unknown; 3717 if (Kind == OMPC_reduction && getLangOpts().OpenMP >= 50 && 3718 (Tok.is(tok::identifier) || Tok.is(tok::kw_default)) && 3719 NextToken().is(tok::comma)) { 3720 // Parse optional reduction modifier. 3721 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3722 getLangOpts().OpenMP); 3723 Data.ExtraModifierLoc = Tok.getLocation(); 3724 ConsumeToken(); 3725 assert(Tok.is(tok::comma) && "Expected comma."); 3726 (void)ConsumeToken(); 3727 } 3728 ColonProtectionRAIIObject ColonRAII(*this); 3729 if (getLangOpts().CPlusPlus) 3730 ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec, 3731 /*ObjectType=*/nullptr, 3732 /*ObjectHadErrors=*/false, 3733 /*EnteringContext=*/false); 3734 InvalidReductionId = ParseReductionId( 3735 *this, Data.ReductionOrMapperIdScopeSpec, UnqualifiedReductionId); 3736 if (InvalidReductionId) { 3737 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3738 StopBeforeMatch); 3739 } 3740 if (Tok.is(tok::colon)) 3741 Data.ColonLoc = ConsumeToken(); 3742 else 3743 Diag(Tok, diag::warn_pragma_expected_colon) << "reduction identifier"; 3744 if (!InvalidReductionId) 3745 Data.ReductionOrMapperId = 3746 Actions.GetNameFromUnqualifiedId(UnqualifiedReductionId); 3747 } else if (Kind == OMPC_depend) { 3748 if (getLangOpts().OpenMP >= 50) { 3749 if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator") { 3750 // Handle optional dependence modifier. 3751 // iterator(iterators-definition) 3752 // where iterators-definition is iterator-specifier [, 3753 // iterators-definition ] 3754 // where iterator-specifier is [ iterator-type ] identifier = 3755 // range-specification 3756 HasIterator = true; 3757 EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope); 3758 ExprResult IteratorRes = ParseOpenMPIteratorsExpr(); 3759 Data.DepModOrTailExpr = IteratorRes.get(); 3760 // Parse ',' 3761 ExpectAndConsume(tok::comma); 3762 } 3763 } 3764 // Handle dependency type for depend clause. 3765 ColonProtectionRAIIObject ColonRAII(*this); 3766 Data.ExtraModifier = getOpenMPSimpleClauseType( 3767 Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : "", 3768 getLangOpts().OpenMP); 3769 Data.ExtraModifierLoc = Tok.getLocation(); 3770 if (Data.ExtraModifier == OMPC_DEPEND_unknown) { 3771 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3772 StopBeforeMatch); 3773 } else { 3774 ConsumeToken(); 3775 // Special processing for depend(source) clause. 3776 if (DKind == OMPD_ordered && Data.ExtraModifier == OMPC_DEPEND_source) { 3777 // Parse ')'. 3778 T.consumeClose(); 3779 return false; 3780 } 3781 } 3782 if (Tok.is(tok::colon)) { 3783 Data.ColonLoc = ConsumeToken(); 3784 } else { 3785 Diag(Tok, DKind == OMPD_ordered ? diag::warn_pragma_expected_colon_r_paren 3786 : diag::warn_pragma_expected_colon) 3787 << "dependency type"; 3788 } 3789 } else if (Kind == OMPC_linear) { 3790 // Try to parse modifier if any. 3791 Data.ExtraModifier = OMPC_LINEAR_val; 3792 if (Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::l_paren)) { 3793 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3794 getLangOpts().OpenMP); 3795 Data.ExtraModifierLoc = ConsumeToken(); 3796 LinearT.consumeOpen(); 3797 NeedRParenForLinear = true; 3798 } 3799 } else if (Kind == OMPC_lastprivate) { 3800 // Try to parse modifier if any. 3801 Data.ExtraModifier = OMPC_LASTPRIVATE_unknown; 3802 // Conditional modifier allowed only in OpenMP 5.0 and not supported in 3803 // distribute and taskloop based directives. 3804 if ((getLangOpts().OpenMP >= 50 && !isOpenMPDistributeDirective(DKind) && 3805 !isOpenMPTaskLoopDirective(DKind)) && 3806 Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::colon)) { 3807 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3808 getLangOpts().OpenMP); 3809 Data.ExtraModifierLoc = Tok.getLocation(); 3810 ConsumeToken(); 3811 assert(Tok.is(tok::colon) && "Expected colon."); 3812 Data.ColonLoc = ConsumeToken(); 3813 } 3814 } else if (Kind == OMPC_map) { 3815 // Handle map type for map clause. 3816 ColonProtectionRAIIObject ColonRAII(*this); 3817 3818 // The first identifier may be a list item, a map-type or a 3819 // map-type-modifier. The map-type can also be delete which has the same 3820 // spelling of the C++ delete keyword. 3821 Data.ExtraModifier = OMPC_MAP_unknown; 3822 Data.ExtraModifierLoc = Tok.getLocation(); 3823 3824 // Check for presence of a colon in the map clause. 3825 TentativeParsingAction TPA(*this); 3826 bool ColonPresent = false; 3827 if (SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3828 StopBeforeMatch)) { 3829 if (Tok.is(tok::colon)) 3830 ColonPresent = true; 3831 } 3832 TPA.Revert(); 3833 // Only parse map-type-modifier[s] and map-type if a colon is present in 3834 // the map clause. 3835 if (ColonPresent) { 3836 IsInvalidMapperModifier = parseMapTypeModifiers(Data); 3837 if (!IsInvalidMapperModifier) 3838 parseMapType(*this, Data); 3839 else 3840 SkipUntil(tok::colon, tok::annot_pragma_openmp_end, StopBeforeMatch); 3841 } 3842 if (Data.ExtraModifier == OMPC_MAP_unknown) { 3843 Data.ExtraModifier = OMPC_MAP_tofrom; 3844 Data.IsMapTypeImplicit = true; 3845 } 3846 3847 if (Tok.is(tok::colon)) 3848 Data.ColonLoc = ConsumeToken(); 3849 } else if (Kind == OMPC_to || Kind == OMPC_from) { 3850 while (Tok.is(tok::identifier)) { 3851 auto Modifier = 3852 static_cast<OpenMPMotionModifierKind>(getOpenMPSimpleClauseType( 3853 Kind, PP.getSpelling(Tok), getLangOpts().OpenMP)); 3854 if (Modifier == OMPC_MOTION_MODIFIER_unknown) 3855 break; 3856 Data.MotionModifiers.push_back(Modifier); 3857 Data.MotionModifiersLoc.push_back(Tok.getLocation()); 3858 ConsumeToken(); 3859 if (Modifier == OMPC_MOTION_MODIFIER_mapper) { 3860 IsInvalidMapperModifier = parseMapperModifier(Data); 3861 if (IsInvalidMapperModifier) 3862 break; 3863 } 3864 // OpenMP < 5.1 doesn't permit a ',' or additional modifiers. 3865 if (getLangOpts().OpenMP < 51) 3866 break; 3867 // OpenMP 5.1 accepts an optional ',' even if the next character is ':'. 3868 // TODO: Is that intentional? 3869 if (Tok.is(tok::comma)) 3870 ConsumeToken(); 3871 } 3872 if (!Data.MotionModifiers.empty() && Tok.isNot(tok::colon)) { 3873 if (!IsInvalidMapperModifier) { 3874 if (getLangOpts().OpenMP < 51) 3875 Diag(Tok, diag::warn_pragma_expected_colon) << ")"; 3876 else 3877 Diag(Tok, diag::warn_pragma_expected_colon) << "motion modifier"; 3878 } 3879 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3880 StopBeforeMatch); 3881 } 3882 // OpenMP 5.1 permits a ':' even without a preceding modifier. TODO: Is 3883 // that intentional? 3884 if ((!Data.MotionModifiers.empty() || getLangOpts().OpenMP >= 51) && 3885 Tok.is(tok::colon)) 3886 Data.ColonLoc = ConsumeToken(); 3887 } else if (Kind == OMPC_allocate || 3888 (Kind == OMPC_affinity && Tok.is(tok::identifier) && 3889 PP.getSpelling(Tok) == "iterator")) { 3890 // Handle optional allocator expression followed by colon delimiter. 3891 ColonProtectionRAIIObject ColonRAII(*this); 3892 TentativeParsingAction TPA(*this); 3893 // OpenMP 5.0, 2.10.1, task Construct. 3894 // where aff-modifier is one of the following: 3895 // iterator(iterators-definition) 3896 ExprResult Tail; 3897 if (Kind == OMPC_allocate) { 3898 Tail = ParseAssignmentExpression(); 3899 } else { 3900 HasIterator = true; 3901 EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope); 3902 Tail = ParseOpenMPIteratorsExpr(); 3903 } 3904 Tail = Actions.CorrectDelayedTyposInExpr(Tail); 3905 Tail = Actions.ActOnFinishFullExpr(Tail.get(), T.getOpenLocation(), 3906 /*DiscardedValue=*/false); 3907 if (Tail.isUsable()) { 3908 if (Tok.is(tok::colon)) { 3909 Data.DepModOrTailExpr = Tail.get(); 3910 Data.ColonLoc = ConsumeToken(); 3911 TPA.Commit(); 3912 } else { 3913 // Colon not found, parse only list of variables. 3914 TPA.Revert(); 3915 } 3916 } else { 3917 // Parsing was unsuccessfull, revert and skip to the end of clause or 3918 // directive. 3919 TPA.Revert(); 3920 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3921 StopBeforeMatch); 3922 } 3923 } 3924 3925 bool IsComma = 3926 (Kind != OMPC_reduction && Kind != OMPC_task_reduction && 3927 Kind != OMPC_in_reduction && Kind != OMPC_depend && Kind != OMPC_map) || 3928 (Kind == OMPC_reduction && !InvalidReductionId) || 3929 (Kind == OMPC_map && Data.ExtraModifier != OMPC_MAP_unknown) || 3930 (Kind == OMPC_depend && Data.ExtraModifier != OMPC_DEPEND_unknown); 3931 const bool MayHaveTail = (Kind == OMPC_linear || Kind == OMPC_aligned); 3932 while (IsComma || (Tok.isNot(tok::r_paren) && Tok.isNot(tok::colon) && 3933 Tok.isNot(tok::annot_pragma_openmp_end))) { 3934 ParseScope OMPListScope(this, Scope::OpenMPDirectiveScope); 3935 ColonProtectionRAIIObject ColonRAII(*this, MayHaveTail); 3936 // Parse variable 3937 ExprResult VarExpr = 3938 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()); 3939 if (VarExpr.isUsable()) { 3940 Vars.push_back(VarExpr.get()); 3941 } else { 3942 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3943 StopBeforeMatch); 3944 } 3945 // Skip ',' if any 3946 IsComma = Tok.is(tok::comma); 3947 if (IsComma) 3948 ConsumeToken(); 3949 else if (Tok.isNot(tok::r_paren) && 3950 Tok.isNot(tok::annot_pragma_openmp_end) && 3951 (!MayHaveTail || Tok.isNot(tok::colon))) 3952 Diag(Tok, diag::err_omp_expected_punc) 3953 << ((Kind == OMPC_flush) ? getOpenMPDirectiveName(OMPD_flush) 3954 : getOpenMPClauseName(Kind)) 3955 << (Kind == OMPC_flush); 3956 } 3957 3958 // Parse ')' for linear clause with modifier. 3959 if (NeedRParenForLinear) 3960 LinearT.consumeClose(); 3961 3962 // Parse ':' linear-step (or ':' alignment). 3963 const bool MustHaveTail = MayHaveTail && Tok.is(tok::colon); 3964 if (MustHaveTail) { 3965 Data.ColonLoc = Tok.getLocation(); 3966 SourceLocation ELoc = ConsumeToken(); 3967 ExprResult Tail = ParseAssignmentExpression(); 3968 Tail = 3969 Actions.ActOnFinishFullExpr(Tail.get(), ELoc, /*DiscardedValue*/ false); 3970 if (Tail.isUsable()) 3971 Data.DepModOrTailExpr = Tail.get(); 3972 else 3973 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3974 StopBeforeMatch); 3975 } 3976 3977 // Parse ')'. 3978 Data.RLoc = Tok.getLocation(); 3979 if (!T.consumeClose()) 3980 Data.RLoc = T.getCloseLocation(); 3981 // Exit from scope when the iterator is used in depend clause. 3982 if (HasIterator) 3983 ExitScope(); 3984 return (Kind != OMPC_depend && Kind != OMPC_map && Vars.empty()) || 3985 (MustHaveTail && !Data.DepModOrTailExpr) || InvalidReductionId || 3986 IsInvalidMapperModifier; 3987 } 3988 3989 /// Parsing of OpenMP clause 'private', 'firstprivate', 'lastprivate', 3990 /// 'shared', 'copyin', 'copyprivate', 'flush', 'reduction', 'task_reduction', 3991 /// 'in_reduction', 'nontemporal', 'exclusive' or 'inclusive'. 3992 /// 3993 /// private-clause: 3994 /// 'private' '(' list ')' 3995 /// firstprivate-clause: 3996 /// 'firstprivate' '(' list ')' 3997 /// lastprivate-clause: 3998 /// 'lastprivate' '(' list ')' 3999 /// shared-clause: 4000 /// 'shared' '(' list ')' 4001 /// linear-clause: 4002 /// 'linear' '(' linear-list [ ':' linear-step ] ')' 4003 /// aligned-clause: 4004 /// 'aligned' '(' list [ ':' alignment ] ')' 4005 /// reduction-clause: 4006 /// 'reduction' '(' [ modifier ',' ] reduction-identifier ':' list ')' 4007 /// task_reduction-clause: 4008 /// 'task_reduction' '(' reduction-identifier ':' list ')' 4009 /// in_reduction-clause: 4010 /// 'in_reduction' '(' reduction-identifier ':' list ')' 4011 /// copyprivate-clause: 4012 /// 'copyprivate' '(' list ')' 4013 /// flush-clause: 4014 /// 'flush' '(' list ')' 4015 /// depend-clause: 4016 /// 'depend' '(' in | out | inout : list | source ')' 4017 /// map-clause: 4018 /// 'map' '(' [ [ always [,] ] [ close [,] ] 4019 /// [ mapper '(' mapper-identifier ')' [,] ] 4020 /// to | from | tofrom | alloc | release | delete ':' ] list ')'; 4021 /// to-clause: 4022 /// 'to' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')' 4023 /// from-clause: 4024 /// 'from' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')' 4025 /// use_device_ptr-clause: 4026 /// 'use_device_ptr' '(' list ')' 4027 /// use_device_addr-clause: 4028 /// 'use_device_addr' '(' list ')' 4029 /// is_device_ptr-clause: 4030 /// 'is_device_ptr' '(' list ')' 4031 /// allocate-clause: 4032 /// 'allocate' '(' [ allocator ':' ] list ')' 4033 /// nontemporal-clause: 4034 /// 'nontemporal' '(' list ')' 4035 /// inclusive-clause: 4036 /// 'inclusive' '(' list ')' 4037 /// exclusive-clause: 4038 /// 'exclusive' '(' list ')' 4039 /// 4040 /// For 'linear' clause linear-list may have the following forms: 4041 /// list 4042 /// modifier(list) 4043 /// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++). 4044 OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind, 4045 OpenMPClauseKind Kind, 4046 bool ParseOnly) { 4047 SourceLocation Loc = Tok.getLocation(); 4048 SourceLocation LOpen = ConsumeToken(); 4049 SmallVector<Expr *, 4> Vars; 4050 OpenMPVarListDataTy Data; 4051 4052 if (ParseOpenMPVarList(DKind, Kind, Vars, Data)) 4053 return nullptr; 4054 4055 if (ParseOnly) 4056 return nullptr; 4057 OMPVarListLocTy Locs(Loc, LOpen, Data.RLoc); 4058 return Actions.ActOnOpenMPVarListClause( 4059 Kind, Vars, Data.DepModOrTailExpr, Locs, Data.ColonLoc, 4060 Data.ReductionOrMapperIdScopeSpec, Data.ReductionOrMapperId, 4061 Data.ExtraModifier, Data.MapTypeModifiers, Data.MapTypeModifiersLoc, 4062 Data.IsMapTypeImplicit, Data.ExtraModifierLoc, Data.MotionModifiers, 4063 Data.MotionModifiersLoc); 4064 } 4065