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_target, OMPD_begin_declare_target}, 135 {OMPD_begin_declare, OMPD_variant, OMPD_begin_declare_variant}, 136 {OMPD_end_declare, OMPD_variant, OMPD_end_declare_variant}, 137 {OMPD_distribute, OMPD_parallel, OMPD_distribute_parallel}, 138 {OMPD_distribute_parallel, OMPD_for, OMPD_distribute_parallel_for}, 139 {OMPD_distribute_parallel_for, OMPD_simd, 140 OMPD_distribute_parallel_for_simd}, 141 {OMPD_distribute, OMPD_simd, OMPD_distribute_simd}, 142 {OMPD_end_declare, OMPD_target, OMPD_end_declare_target}, 143 {OMPD_target, OMPD_data, OMPD_target_data}, 144 {OMPD_target, OMPD_enter, OMPD_target_enter}, 145 {OMPD_target, OMPD_exit, OMPD_target_exit}, 146 {OMPD_target, OMPD_update, OMPD_target_update}, 147 {OMPD_target_enter, OMPD_data, OMPD_target_enter_data}, 148 {OMPD_target_exit, OMPD_data, OMPD_target_exit_data}, 149 {OMPD_for, OMPD_simd, OMPD_for_simd}, 150 {OMPD_parallel, OMPD_for, OMPD_parallel_for}, 151 {OMPD_parallel_for, OMPD_simd, OMPD_parallel_for_simd}, 152 {OMPD_parallel, OMPD_sections, OMPD_parallel_sections}, 153 {OMPD_taskloop, OMPD_simd, OMPD_taskloop_simd}, 154 {OMPD_target, OMPD_parallel, OMPD_target_parallel}, 155 {OMPD_target, OMPD_simd, OMPD_target_simd}, 156 {OMPD_target_parallel, OMPD_for, OMPD_target_parallel_for}, 157 {OMPD_target_parallel_for, OMPD_simd, OMPD_target_parallel_for_simd}, 158 {OMPD_teams, OMPD_distribute, OMPD_teams_distribute}, 159 {OMPD_teams_distribute, OMPD_simd, OMPD_teams_distribute_simd}, 160 {OMPD_teams_distribute, OMPD_parallel, OMPD_teams_distribute_parallel}, 161 {OMPD_teams_distribute_parallel, OMPD_for, 162 OMPD_teams_distribute_parallel_for}, 163 {OMPD_teams_distribute_parallel_for, OMPD_simd, 164 OMPD_teams_distribute_parallel_for_simd}, 165 {OMPD_target, OMPD_teams, OMPD_target_teams}, 166 {OMPD_target_teams, OMPD_distribute, OMPD_target_teams_distribute}, 167 {OMPD_target_teams_distribute, OMPD_parallel, 168 OMPD_target_teams_distribute_parallel}, 169 {OMPD_target_teams_distribute, OMPD_simd, 170 OMPD_target_teams_distribute_simd}, 171 {OMPD_target_teams_distribute_parallel, OMPD_for, 172 OMPD_target_teams_distribute_parallel_for}, 173 {OMPD_target_teams_distribute_parallel_for, OMPD_simd, 174 OMPD_target_teams_distribute_parallel_for_simd}, 175 {OMPD_master, OMPD_taskloop, OMPD_master_taskloop}, 176 {OMPD_master_taskloop, OMPD_simd, OMPD_master_taskloop_simd}, 177 {OMPD_parallel, OMPD_master, OMPD_parallel_master}, 178 {OMPD_parallel_master, OMPD_taskloop, OMPD_parallel_master_taskloop}, 179 {OMPD_parallel_master_taskloop, OMPD_simd, 180 OMPD_parallel_master_taskloop_simd}}; 181 enum { CancellationPoint = 0, DeclareReduction = 1, TargetData = 2 }; 182 Token Tok = P.getCurToken(); 183 OpenMPDirectiveKindExWrapper DKind = 184 Tok.isAnnotation() 185 ? static_cast<unsigned>(OMPD_unknown) 186 : getOpenMPDirectiveKindEx(P.getPreprocessor().getSpelling(Tok)); 187 if (DKind == OMPD_unknown) 188 return OMPD_unknown; 189 190 for (unsigned I = 0; I < llvm::array_lengthof(F); ++I) { 191 if (DKind != F[I][0]) 192 continue; 193 194 Tok = P.getPreprocessor().LookAhead(0); 195 OpenMPDirectiveKindExWrapper SDKind = 196 Tok.isAnnotation() 197 ? static_cast<unsigned>(OMPD_unknown) 198 : getOpenMPDirectiveKindEx(P.getPreprocessor().getSpelling(Tok)); 199 if (SDKind == OMPD_unknown) 200 continue; 201 202 if (SDKind == F[I][1]) { 203 P.ConsumeToken(); 204 DKind = F[I][2]; 205 } 206 } 207 return unsigned(DKind) < llvm::omp::Directive_enumSize 208 ? static_cast<OpenMPDirectiveKind>(DKind) 209 : OMPD_unknown; 210 } 211 212 static DeclarationName parseOpenMPReductionId(Parser &P) { 213 Token Tok = P.getCurToken(); 214 Sema &Actions = P.getActions(); 215 OverloadedOperatorKind OOK = OO_None; 216 // Allow to use 'operator' keyword for C++ operators 217 bool WithOperator = false; 218 if (Tok.is(tok::kw_operator)) { 219 P.ConsumeToken(); 220 Tok = P.getCurToken(); 221 WithOperator = true; 222 } 223 switch (Tok.getKind()) { 224 case tok::plus: // '+' 225 OOK = OO_Plus; 226 break; 227 case tok::minus: // '-' 228 OOK = OO_Minus; 229 break; 230 case tok::star: // '*' 231 OOK = OO_Star; 232 break; 233 case tok::amp: // '&' 234 OOK = OO_Amp; 235 break; 236 case tok::pipe: // '|' 237 OOK = OO_Pipe; 238 break; 239 case tok::caret: // '^' 240 OOK = OO_Caret; 241 break; 242 case tok::ampamp: // '&&' 243 OOK = OO_AmpAmp; 244 break; 245 case tok::pipepipe: // '||' 246 OOK = OO_PipePipe; 247 break; 248 case tok::identifier: // identifier 249 if (!WithOperator) 250 break; 251 LLVM_FALLTHROUGH; 252 default: 253 P.Diag(Tok.getLocation(), diag::err_omp_expected_reduction_identifier); 254 P.SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 255 Parser::StopBeforeMatch); 256 return DeclarationName(); 257 } 258 P.ConsumeToken(); 259 auto &DeclNames = Actions.getASTContext().DeclarationNames; 260 return OOK == OO_None ? DeclNames.getIdentifier(Tok.getIdentifierInfo()) 261 : DeclNames.getCXXOperatorName(OOK); 262 } 263 264 /// Parse 'omp declare reduction' construct. 265 /// 266 /// declare-reduction-directive: 267 /// annot_pragma_openmp 'declare' 'reduction' 268 /// '(' <reduction_id> ':' <type> {',' <type>} ':' <expression> ')' 269 /// ['initializer' '(' ('omp_priv' '=' <expression>)|<function_call> ')'] 270 /// annot_pragma_openmp_end 271 /// <reduction_id> is either a base language identifier or one of the following 272 /// operators: '+', '-', '*', '&', '|', '^', '&&' and '||'. 273 /// 274 Parser::DeclGroupPtrTy 275 Parser::ParseOpenMPDeclareReductionDirective(AccessSpecifier AS) { 276 // Parse '('. 277 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 278 if (T.expectAndConsume( 279 diag::err_expected_lparen_after, 280 getOpenMPDirectiveName(OMPD_declare_reduction).data())) { 281 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 282 return DeclGroupPtrTy(); 283 } 284 285 DeclarationName Name = parseOpenMPReductionId(*this); 286 if (Name.isEmpty() && Tok.is(tok::annot_pragma_openmp_end)) 287 return DeclGroupPtrTy(); 288 289 // Consume ':'. 290 bool IsCorrect = !ExpectAndConsume(tok::colon); 291 292 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 293 return DeclGroupPtrTy(); 294 295 IsCorrect = IsCorrect && !Name.isEmpty(); 296 297 if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) { 298 Diag(Tok.getLocation(), diag::err_expected_type); 299 IsCorrect = false; 300 } 301 302 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 303 return DeclGroupPtrTy(); 304 305 SmallVector<std::pair<QualType, SourceLocation>, 8> ReductionTypes; 306 // Parse list of types until ':' token. 307 do { 308 ColonProtectionRAIIObject ColonRAII(*this); 309 SourceRange Range; 310 TypeResult TR = ParseTypeName(&Range, DeclaratorContext::Prototype, AS); 311 if (TR.isUsable()) { 312 QualType ReductionType = 313 Actions.ActOnOpenMPDeclareReductionType(Range.getBegin(), TR); 314 if (!ReductionType.isNull()) { 315 ReductionTypes.push_back( 316 std::make_pair(ReductionType, Range.getBegin())); 317 } 318 } else { 319 SkipUntil(tok::comma, tok::colon, tok::annot_pragma_openmp_end, 320 StopBeforeMatch); 321 } 322 323 if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) 324 break; 325 326 // Consume ','. 327 if (ExpectAndConsume(tok::comma)) { 328 IsCorrect = false; 329 if (Tok.is(tok::annot_pragma_openmp_end)) { 330 Diag(Tok.getLocation(), diag::err_expected_type); 331 return DeclGroupPtrTy(); 332 } 333 } 334 } while (Tok.isNot(tok::annot_pragma_openmp_end)); 335 336 if (ReductionTypes.empty()) { 337 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 338 return DeclGroupPtrTy(); 339 } 340 341 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 342 return DeclGroupPtrTy(); 343 344 // Consume ':'. 345 if (ExpectAndConsume(tok::colon)) 346 IsCorrect = false; 347 348 if (Tok.is(tok::annot_pragma_openmp_end)) { 349 Diag(Tok.getLocation(), diag::err_expected_expression); 350 return DeclGroupPtrTy(); 351 } 352 353 DeclGroupPtrTy DRD = Actions.ActOnOpenMPDeclareReductionDirectiveStart( 354 getCurScope(), Actions.getCurLexicalContext(), Name, ReductionTypes, AS); 355 356 // Parse <combiner> expression and then parse initializer if any for each 357 // correct type. 358 unsigned I = 0, E = ReductionTypes.size(); 359 for (Decl *D : DRD.get()) { 360 TentativeParsingAction TPA(*this); 361 ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope | 362 Scope::CompoundStmtScope | 363 Scope::OpenMPDirectiveScope); 364 // Parse <combiner> expression. 365 Actions.ActOnOpenMPDeclareReductionCombinerStart(getCurScope(), D); 366 ExprResult CombinerResult = Actions.ActOnFinishFullExpr( 367 ParseExpression().get(), D->getLocation(), /*DiscardedValue*/ false); 368 Actions.ActOnOpenMPDeclareReductionCombinerEnd(D, CombinerResult.get()); 369 370 if (CombinerResult.isInvalid() && Tok.isNot(tok::r_paren) && 371 Tok.isNot(tok::annot_pragma_openmp_end)) { 372 TPA.Commit(); 373 IsCorrect = false; 374 break; 375 } 376 IsCorrect = !T.consumeClose() && IsCorrect && CombinerResult.isUsable(); 377 ExprResult InitializerResult; 378 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 379 // Parse <initializer> expression. 380 if (Tok.is(tok::identifier) && 381 Tok.getIdentifierInfo()->isStr("initializer")) { 382 ConsumeToken(); 383 } else { 384 Diag(Tok.getLocation(), diag::err_expected) << "'initializer'"; 385 TPA.Commit(); 386 IsCorrect = false; 387 break; 388 } 389 // Parse '('. 390 BalancedDelimiterTracker T(*this, tok::l_paren, 391 tok::annot_pragma_openmp_end); 392 IsCorrect = 393 !T.expectAndConsume(diag::err_expected_lparen_after, "initializer") && 394 IsCorrect; 395 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 396 ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope | 397 Scope::CompoundStmtScope | 398 Scope::OpenMPDirectiveScope); 399 // Parse expression. 400 VarDecl *OmpPrivParm = 401 Actions.ActOnOpenMPDeclareReductionInitializerStart(getCurScope(), 402 D); 403 // Check if initializer is omp_priv <init_expr> or something else. 404 if (Tok.is(tok::identifier) && 405 Tok.getIdentifierInfo()->isStr("omp_priv")) { 406 ConsumeToken(); 407 ParseOpenMPReductionInitializerForDecl(OmpPrivParm); 408 } else { 409 InitializerResult = Actions.ActOnFinishFullExpr( 410 ParseAssignmentExpression().get(), D->getLocation(), 411 /*DiscardedValue*/ false); 412 } 413 Actions.ActOnOpenMPDeclareReductionInitializerEnd( 414 D, InitializerResult.get(), OmpPrivParm); 415 if (InitializerResult.isInvalid() && Tok.isNot(tok::r_paren) && 416 Tok.isNot(tok::annot_pragma_openmp_end)) { 417 TPA.Commit(); 418 IsCorrect = false; 419 break; 420 } 421 IsCorrect = 422 !T.consumeClose() && IsCorrect && !InitializerResult.isInvalid(); 423 } 424 } 425 426 ++I; 427 // Revert parsing if not the last type, otherwise accept it, we're done with 428 // parsing. 429 if (I != E) 430 TPA.Revert(); 431 else 432 TPA.Commit(); 433 } 434 return Actions.ActOnOpenMPDeclareReductionDirectiveEnd(getCurScope(), DRD, 435 IsCorrect); 436 } 437 438 void Parser::ParseOpenMPReductionInitializerForDecl(VarDecl *OmpPrivParm) { 439 // Parse declarator '=' initializer. 440 // If a '==' or '+=' is found, suggest a fixit to '='. 441 if (isTokenEqualOrEqualTypo()) { 442 ConsumeToken(); 443 444 if (Tok.is(tok::code_completion)) { 445 cutOffParsing(); 446 Actions.CodeCompleteInitializer(getCurScope(), OmpPrivParm); 447 Actions.FinalizeDeclaration(OmpPrivParm); 448 return; 449 } 450 451 PreferredType.enterVariableInit(Tok.getLocation(), OmpPrivParm); 452 ExprResult Init = ParseInitializer(); 453 454 if (Init.isInvalid()) { 455 SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch); 456 Actions.ActOnInitializerError(OmpPrivParm); 457 } else { 458 Actions.AddInitializerToDecl(OmpPrivParm, Init.get(), 459 /*DirectInit=*/false); 460 } 461 } else if (Tok.is(tok::l_paren)) { 462 // Parse C++ direct initializer: '(' expression-list ')' 463 BalancedDelimiterTracker T(*this, tok::l_paren); 464 T.consumeOpen(); 465 466 ExprVector Exprs; 467 CommaLocsTy CommaLocs; 468 469 SourceLocation LParLoc = T.getOpenLocation(); 470 auto RunSignatureHelp = [this, OmpPrivParm, LParLoc, &Exprs]() { 471 QualType PreferredType = Actions.ProduceConstructorSignatureHelp( 472 getCurScope(), OmpPrivParm->getType()->getCanonicalTypeInternal(), 473 OmpPrivParm->getLocation(), Exprs, LParLoc); 474 CalledSignatureHelp = true; 475 return PreferredType; 476 }; 477 if (ParseExpressionList(Exprs, CommaLocs, [&] { 478 PreferredType.enterFunctionArgument(Tok.getLocation(), 479 RunSignatureHelp); 480 })) { 481 if (PP.isCodeCompletionReached() && !CalledSignatureHelp) 482 RunSignatureHelp(); 483 Actions.ActOnInitializerError(OmpPrivParm); 484 SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch); 485 } else { 486 // Match the ')'. 487 SourceLocation RLoc = Tok.getLocation(); 488 if (!T.consumeClose()) 489 RLoc = T.getCloseLocation(); 490 491 assert(!Exprs.empty() && Exprs.size() - 1 == CommaLocs.size() && 492 "Unexpected number of commas!"); 493 494 ExprResult Initializer = 495 Actions.ActOnParenListExpr(T.getOpenLocation(), RLoc, Exprs); 496 Actions.AddInitializerToDecl(OmpPrivParm, Initializer.get(), 497 /*DirectInit=*/true); 498 } 499 } else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) { 500 // Parse C++0x braced-init-list. 501 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists); 502 503 ExprResult Init(ParseBraceInitializer()); 504 505 if (Init.isInvalid()) { 506 Actions.ActOnInitializerError(OmpPrivParm); 507 } else { 508 Actions.AddInitializerToDecl(OmpPrivParm, Init.get(), 509 /*DirectInit=*/true); 510 } 511 } else { 512 Actions.ActOnUninitializedDecl(OmpPrivParm); 513 } 514 } 515 516 /// Parses 'omp declare mapper' directive. 517 /// 518 /// declare-mapper-directive: 519 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifier> ':'] 520 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 521 /// annot_pragma_openmp_end 522 /// <mapper-identifier> and <var> are base language identifiers. 523 /// 524 Parser::DeclGroupPtrTy 525 Parser::ParseOpenMPDeclareMapperDirective(AccessSpecifier AS) { 526 bool IsCorrect = true; 527 // Parse '(' 528 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 529 if (T.expectAndConsume(diag::err_expected_lparen_after, 530 getOpenMPDirectiveName(OMPD_declare_mapper).data())) { 531 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 532 return DeclGroupPtrTy(); 533 } 534 535 // Parse <mapper-identifier> 536 auto &DeclNames = Actions.getASTContext().DeclarationNames; 537 DeclarationName MapperId; 538 if (PP.LookAhead(0).is(tok::colon)) { 539 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) { 540 Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier); 541 IsCorrect = false; 542 } else { 543 MapperId = DeclNames.getIdentifier(Tok.getIdentifierInfo()); 544 } 545 ConsumeToken(); 546 // Consume ':'. 547 ExpectAndConsume(tok::colon); 548 } else { 549 // If no mapper identifier is provided, its name is "default" by default 550 MapperId = 551 DeclNames.getIdentifier(&Actions.getASTContext().Idents.get("default")); 552 } 553 554 if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end)) 555 return DeclGroupPtrTy(); 556 557 // Parse <type> <var> 558 DeclarationName VName; 559 QualType MapperType; 560 SourceRange Range; 561 TypeResult ParsedType = parseOpenMPDeclareMapperVarDecl(Range, VName, AS); 562 if (ParsedType.isUsable()) 563 MapperType = 564 Actions.ActOnOpenMPDeclareMapperType(Range.getBegin(), ParsedType); 565 if (MapperType.isNull()) 566 IsCorrect = false; 567 if (!IsCorrect) { 568 SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch); 569 return DeclGroupPtrTy(); 570 } 571 572 // Consume ')'. 573 IsCorrect &= !T.consumeClose(); 574 if (!IsCorrect) { 575 SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch); 576 return DeclGroupPtrTy(); 577 } 578 579 // Enter scope. 580 DeclarationNameInfo DirName; 581 SourceLocation Loc = Tok.getLocation(); 582 unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope | 583 Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope; 584 ParseScope OMPDirectiveScope(this, ScopeFlags); 585 Actions.StartOpenMPDSABlock(OMPD_declare_mapper, DirName, getCurScope(), Loc); 586 587 // Add the mapper variable declaration. 588 ExprResult MapperVarRef = Actions.ActOnOpenMPDeclareMapperDirectiveVarDecl( 589 getCurScope(), MapperType, Range.getBegin(), VName); 590 591 // Parse map clauses. 592 SmallVector<OMPClause *, 6> Clauses; 593 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 594 OpenMPClauseKind CKind = Tok.isAnnotation() 595 ? OMPC_unknown 596 : getOpenMPClauseKind(PP.getSpelling(Tok)); 597 Actions.StartOpenMPClause(CKind); 598 OMPClause *Clause = 599 ParseOpenMPClause(OMPD_declare_mapper, CKind, Clauses.empty()); 600 if (Clause) 601 Clauses.push_back(Clause); 602 else 603 IsCorrect = false; 604 // Skip ',' if any. 605 if (Tok.is(tok::comma)) 606 ConsumeToken(); 607 Actions.EndOpenMPClause(); 608 } 609 if (Clauses.empty()) { 610 Diag(Tok, diag::err_omp_expected_clause) 611 << getOpenMPDirectiveName(OMPD_declare_mapper); 612 IsCorrect = false; 613 } 614 615 // Exit scope. 616 Actions.EndOpenMPDSABlock(nullptr); 617 OMPDirectiveScope.Exit(); 618 DeclGroupPtrTy DG = Actions.ActOnOpenMPDeclareMapperDirective( 619 getCurScope(), Actions.getCurLexicalContext(), MapperId, MapperType, 620 Range.getBegin(), VName, AS, MapperVarRef.get(), Clauses); 621 if (!IsCorrect) 622 return DeclGroupPtrTy(); 623 624 return DG; 625 } 626 627 TypeResult Parser::parseOpenMPDeclareMapperVarDecl(SourceRange &Range, 628 DeclarationName &Name, 629 AccessSpecifier AS) { 630 // Parse the common declaration-specifiers piece. 631 Parser::DeclSpecContext DSC = Parser::DeclSpecContext::DSC_type_specifier; 632 DeclSpec DS(AttrFactory); 633 ParseSpecifierQualifierList(DS, AS, DSC); 634 635 // Parse the declarator. 636 DeclaratorContext Context = DeclaratorContext::Prototype; 637 Declarator DeclaratorInfo(DS, Context); 638 ParseDeclarator(DeclaratorInfo); 639 Range = DeclaratorInfo.getSourceRange(); 640 if (DeclaratorInfo.getIdentifier() == nullptr) { 641 Diag(Tok.getLocation(), diag::err_omp_mapper_expected_declarator); 642 return true; 643 } 644 Name = Actions.GetNameForDeclarator(DeclaratorInfo).getName(); 645 646 return Actions.ActOnOpenMPDeclareMapperVarDecl(getCurScope(), DeclaratorInfo); 647 } 648 649 namespace { 650 /// RAII that recreates function context for correct parsing of clauses of 651 /// 'declare simd' construct. 652 /// OpenMP, 2.8.2 declare simd Construct 653 /// The expressions appearing in the clauses of this directive are evaluated in 654 /// the scope of the arguments of the function declaration or definition. 655 class FNContextRAII final { 656 Parser &P; 657 Sema::CXXThisScopeRAII *ThisScope; 658 Parser::MultiParseScope Scopes; 659 bool HasFunScope = false; 660 FNContextRAII() = delete; 661 FNContextRAII(const FNContextRAII &) = delete; 662 FNContextRAII &operator=(const FNContextRAII &) = delete; 663 664 public: 665 FNContextRAII(Parser &P, Parser::DeclGroupPtrTy Ptr) : P(P), Scopes(P) { 666 Decl *D = *Ptr.get().begin(); 667 NamedDecl *ND = dyn_cast<NamedDecl>(D); 668 RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext()); 669 Sema &Actions = P.getActions(); 670 671 // Allow 'this' within late-parsed attributes. 672 ThisScope = new Sema::CXXThisScopeRAII(Actions, RD, Qualifiers(), 673 ND && ND->isCXXInstanceMember()); 674 675 // If the Decl is templatized, add template parameters to scope. 676 // FIXME: Track CurTemplateDepth? 677 P.ReenterTemplateScopes(Scopes, D); 678 679 // If the Decl is on a function, add function parameters to the scope. 680 if (D->isFunctionOrFunctionTemplate()) { 681 HasFunScope = true; 682 Scopes.Enter(Scope::FnScope | Scope::DeclScope | 683 Scope::CompoundStmtScope); 684 Actions.ActOnReenterFunctionContext(Actions.getCurScope(), D); 685 } 686 } 687 ~FNContextRAII() { 688 if (HasFunScope) 689 P.getActions().ActOnExitFunctionContext(); 690 delete ThisScope; 691 } 692 }; 693 } // namespace 694 695 /// Parses clauses for 'declare simd' directive. 696 /// clause: 697 /// 'inbranch' | 'notinbranch' 698 /// 'simdlen' '(' <expr> ')' 699 /// { 'uniform' '(' <argument_list> ')' } 700 /// { 'aligned '(' <argument_list> [ ':' <alignment> ] ')' } 701 /// { 'linear '(' <argument_list> [ ':' <step> ] ')' } 702 static bool parseDeclareSimdClauses( 703 Parser &P, OMPDeclareSimdDeclAttr::BranchStateTy &BS, ExprResult &SimdLen, 704 SmallVectorImpl<Expr *> &Uniforms, SmallVectorImpl<Expr *> &Aligneds, 705 SmallVectorImpl<Expr *> &Alignments, SmallVectorImpl<Expr *> &Linears, 706 SmallVectorImpl<unsigned> &LinModifiers, SmallVectorImpl<Expr *> &Steps) { 707 SourceRange BSRange; 708 const Token &Tok = P.getCurToken(); 709 bool IsError = false; 710 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 711 if (Tok.isNot(tok::identifier)) 712 break; 713 OMPDeclareSimdDeclAttr::BranchStateTy Out; 714 IdentifierInfo *II = Tok.getIdentifierInfo(); 715 StringRef ClauseName = II->getName(); 716 // Parse 'inranch|notinbranch' clauses. 717 if (OMPDeclareSimdDeclAttr::ConvertStrToBranchStateTy(ClauseName, Out)) { 718 if (BS != OMPDeclareSimdDeclAttr::BS_Undefined && BS != Out) { 719 P.Diag(Tok, diag::err_omp_declare_simd_inbranch_notinbranch) 720 << ClauseName 721 << OMPDeclareSimdDeclAttr::ConvertBranchStateTyToStr(BS) << BSRange; 722 IsError = true; 723 } 724 BS = Out; 725 BSRange = SourceRange(Tok.getLocation(), Tok.getEndLoc()); 726 P.ConsumeToken(); 727 } else if (ClauseName.equals("simdlen")) { 728 if (SimdLen.isUsable()) { 729 P.Diag(Tok, diag::err_omp_more_one_clause) 730 << getOpenMPDirectiveName(OMPD_declare_simd) << ClauseName << 0; 731 IsError = true; 732 } 733 P.ConsumeToken(); 734 SourceLocation RLoc; 735 SimdLen = P.ParseOpenMPParensExpr(ClauseName, RLoc); 736 if (SimdLen.isInvalid()) 737 IsError = true; 738 } else { 739 OpenMPClauseKind CKind = getOpenMPClauseKind(ClauseName); 740 if (CKind == OMPC_uniform || CKind == OMPC_aligned || 741 CKind == OMPC_linear) { 742 Parser::OpenMPVarListDataTy Data; 743 SmallVectorImpl<Expr *> *Vars = &Uniforms; 744 if (CKind == OMPC_aligned) { 745 Vars = &Aligneds; 746 } else if (CKind == OMPC_linear) { 747 Data.ExtraModifier = OMPC_LINEAR_val; 748 Vars = &Linears; 749 } 750 751 P.ConsumeToken(); 752 if (P.ParseOpenMPVarList(OMPD_declare_simd, 753 getOpenMPClauseKind(ClauseName), *Vars, Data)) 754 IsError = true; 755 if (CKind == OMPC_aligned) { 756 Alignments.append(Aligneds.size() - Alignments.size(), 757 Data.DepModOrTailExpr); 758 } else if (CKind == OMPC_linear) { 759 assert(0 <= Data.ExtraModifier && 760 Data.ExtraModifier <= OMPC_LINEAR_unknown && 761 "Unexpected linear modifier."); 762 if (P.getActions().CheckOpenMPLinearModifier( 763 static_cast<OpenMPLinearClauseKind>(Data.ExtraModifier), 764 Data.ExtraModifierLoc)) 765 Data.ExtraModifier = OMPC_LINEAR_val; 766 LinModifiers.append(Linears.size() - LinModifiers.size(), 767 Data.ExtraModifier); 768 Steps.append(Linears.size() - Steps.size(), Data.DepModOrTailExpr); 769 } 770 } else 771 // TODO: add parsing of other clauses. 772 break; 773 } 774 // Skip ',' if any. 775 if (Tok.is(tok::comma)) 776 P.ConsumeToken(); 777 } 778 return IsError; 779 } 780 781 /// Parse clauses for '#pragma omp declare simd'. 782 Parser::DeclGroupPtrTy 783 Parser::ParseOMPDeclareSimdClauses(Parser::DeclGroupPtrTy Ptr, 784 CachedTokens &Toks, SourceLocation Loc) { 785 PP.EnterToken(Tok, /*IsReinject*/ true); 786 PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true, 787 /*IsReinject*/ true); 788 // Consume the previously pushed token. 789 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 790 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 791 792 FNContextRAII FnContext(*this, Ptr); 793 OMPDeclareSimdDeclAttr::BranchStateTy BS = 794 OMPDeclareSimdDeclAttr::BS_Undefined; 795 ExprResult Simdlen; 796 SmallVector<Expr *, 4> Uniforms; 797 SmallVector<Expr *, 4> Aligneds; 798 SmallVector<Expr *, 4> Alignments; 799 SmallVector<Expr *, 4> Linears; 800 SmallVector<unsigned, 4> LinModifiers; 801 SmallVector<Expr *, 4> Steps; 802 bool IsError = 803 parseDeclareSimdClauses(*this, BS, Simdlen, Uniforms, Aligneds, 804 Alignments, Linears, LinModifiers, Steps); 805 skipUntilPragmaOpenMPEnd(OMPD_declare_simd); 806 // Skip the last annot_pragma_openmp_end. 807 SourceLocation EndLoc = ConsumeAnnotationToken(); 808 if (IsError) 809 return Ptr; 810 return Actions.ActOnOpenMPDeclareSimdDirective( 811 Ptr, BS, Simdlen.get(), Uniforms, Aligneds, Alignments, Linears, 812 LinModifiers, Steps, SourceRange(Loc, EndLoc)); 813 } 814 815 namespace { 816 /// Constant used in the diagnostics to distinguish the levels in an OpenMP 817 /// contexts: selector-set={selector(trait, ...), ...}, .... 818 enum OMPContextLvl { 819 CONTEXT_SELECTOR_SET_LVL = 0, 820 CONTEXT_SELECTOR_LVL = 1, 821 CONTEXT_TRAIT_LVL = 2, 822 }; 823 824 static StringRef stringLiteralParser(Parser &P) { 825 ExprResult Res = P.ParseStringLiteralExpression(true); 826 return Res.isUsable() ? Res.getAs<StringLiteral>()->getString() : ""; 827 } 828 829 static StringRef getNameFromIdOrString(Parser &P, Token &Tok, 830 OMPContextLvl Lvl) { 831 if (Tok.is(tok::identifier)) { 832 llvm::SmallString<16> Buffer; 833 StringRef Name = P.getPreprocessor().getSpelling(Tok, Buffer); 834 (void)P.ConsumeToken(); 835 return Name; 836 } 837 838 if (tok::isStringLiteral(Tok.getKind())) 839 return stringLiteralParser(P); 840 841 P.Diag(Tok.getLocation(), 842 diag::warn_omp_declare_variant_string_literal_or_identifier) 843 << Lvl; 844 return ""; 845 } 846 847 static bool checkForDuplicates(Parser &P, StringRef Name, 848 SourceLocation NameLoc, 849 llvm::StringMap<SourceLocation> &Seen, 850 OMPContextLvl Lvl) { 851 auto Res = Seen.try_emplace(Name, NameLoc); 852 if (Res.second) 853 return false; 854 855 // Each trait-set-selector-name, trait-selector-name and trait-name can 856 // only be specified once. 857 P.Diag(NameLoc, diag::warn_omp_declare_variant_ctx_mutiple_use) 858 << Lvl << Name; 859 P.Diag(Res.first->getValue(), diag::note_omp_declare_variant_ctx_used_here) 860 << Lvl << Name; 861 return true; 862 } 863 } // namespace 864 865 void Parser::parseOMPTraitPropertyKind(OMPTraitProperty &TIProperty, 866 llvm::omp::TraitSet Set, 867 llvm::omp::TraitSelector Selector, 868 llvm::StringMap<SourceLocation> &Seen) { 869 TIProperty.Kind = TraitProperty::invalid; 870 871 SourceLocation NameLoc = Tok.getLocation(); 872 StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_TRAIT_LVL); 873 if (Name.empty()) { 874 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options) 875 << CONTEXT_TRAIT_LVL << listOpenMPContextTraitProperties(Set, Selector); 876 return; 877 } 878 879 TIProperty.RawString = Name; 880 TIProperty.Kind = getOpenMPContextTraitPropertyKind(Set, Selector, Name); 881 if (TIProperty.Kind != TraitProperty::invalid) { 882 if (checkForDuplicates(*this, Name, NameLoc, Seen, CONTEXT_TRAIT_LVL)) 883 TIProperty.Kind = TraitProperty::invalid; 884 return; 885 } 886 887 // It follows diagnosis and helping notes. 888 // FIXME: We should move the diagnosis string generation into libFrontend. 889 Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_property) 890 << Name << getOpenMPContextTraitSelectorName(Selector) 891 << getOpenMPContextTraitSetName(Set); 892 893 TraitSet SetForName = getOpenMPContextTraitSetKind(Name); 894 if (SetForName != TraitSet::invalid) { 895 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 896 << Name << CONTEXT_SELECTOR_SET_LVL << CONTEXT_TRAIT_LVL; 897 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 898 << Name << "<selector-name>" 899 << "(<property-name>)"; 900 return; 901 } 902 TraitSelector SelectorForName = getOpenMPContextTraitSelectorKind(Name); 903 if (SelectorForName != TraitSelector::invalid) { 904 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 905 << Name << CONTEXT_SELECTOR_LVL << CONTEXT_TRAIT_LVL; 906 bool AllowsTraitScore = false; 907 bool RequiresProperty = false; 908 isValidTraitSelectorForTraitSet( 909 SelectorForName, getOpenMPContextTraitSetForSelector(SelectorForName), 910 AllowsTraitScore, RequiresProperty); 911 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 912 << getOpenMPContextTraitSetName( 913 getOpenMPContextTraitSetForSelector(SelectorForName)) 914 << Name << (RequiresProperty ? "(<property-name>)" : ""); 915 return; 916 } 917 for (const auto &PotentialSet : 918 {TraitSet::construct, TraitSet::user, TraitSet::implementation, 919 TraitSet::device}) { 920 TraitProperty PropertyForName = 921 getOpenMPContextTraitPropertyKind(PotentialSet, Selector, Name); 922 if (PropertyForName == TraitProperty::invalid) 923 continue; 924 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 925 << getOpenMPContextTraitSetName( 926 getOpenMPContextTraitSetForProperty(PropertyForName)) 927 << getOpenMPContextTraitSelectorName( 928 getOpenMPContextTraitSelectorForProperty(PropertyForName)) 929 << ("(" + Name + ")").str(); 930 return; 931 } 932 Diag(NameLoc, diag::note_omp_declare_variant_ctx_options) 933 << CONTEXT_TRAIT_LVL << listOpenMPContextTraitProperties(Set, Selector); 934 } 935 936 static bool checkExtensionProperty(Parser &P, SourceLocation Loc, 937 OMPTraitProperty &TIProperty, 938 OMPTraitSelector &TISelector, 939 llvm::StringMap<SourceLocation> &Seen) { 940 assert(TISelector.Kind == 941 llvm::omp::TraitSelector::implementation_extension && 942 "Only for extension properties, e.g., " 943 "`implementation={extension(PROPERTY)}`"); 944 if (TIProperty.Kind == TraitProperty::invalid) 945 return false; 946 947 if (TIProperty.Kind == 948 TraitProperty::implementation_extension_disable_implicit_base) 949 return true; 950 951 if (TIProperty.Kind == 952 TraitProperty::implementation_extension_allow_templates) 953 return true; 954 955 auto IsMatchExtension = [](OMPTraitProperty &TP) { 956 return (TP.Kind == 957 llvm::omp::TraitProperty::implementation_extension_match_all || 958 TP.Kind == 959 llvm::omp::TraitProperty::implementation_extension_match_any || 960 TP.Kind == 961 llvm::omp::TraitProperty::implementation_extension_match_none); 962 }; 963 964 if (IsMatchExtension(TIProperty)) { 965 for (OMPTraitProperty &SeenProp : TISelector.Properties) 966 if (IsMatchExtension(SeenProp)) { 967 P.Diag(Loc, diag::err_omp_variant_ctx_second_match_extension); 968 StringRef SeenName = llvm::omp::getOpenMPContextTraitPropertyName( 969 SeenProp.Kind, SeenProp.RawString); 970 SourceLocation SeenLoc = Seen[SeenName]; 971 P.Diag(SeenLoc, diag::note_omp_declare_variant_ctx_used_here) 972 << CONTEXT_TRAIT_LVL << SeenName; 973 return false; 974 } 975 return true; 976 } 977 978 llvm_unreachable("Unknown extension property!"); 979 } 980 981 void Parser::parseOMPContextProperty(OMPTraitSelector &TISelector, 982 llvm::omp::TraitSet Set, 983 llvm::StringMap<SourceLocation> &Seen) { 984 assert(TISelector.Kind != TraitSelector::user_condition && 985 "User conditions are special properties not handled here!"); 986 987 SourceLocation PropertyLoc = Tok.getLocation(); 988 OMPTraitProperty TIProperty; 989 parseOMPTraitPropertyKind(TIProperty, Set, TISelector.Kind, Seen); 990 991 if (TISelector.Kind == llvm::omp::TraitSelector::implementation_extension) 992 if (!checkExtensionProperty(*this, Tok.getLocation(), TIProperty, 993 TISelector, Seen)) 994 TIProperty.Kind = TraitProperty::invalid; 995 996 // If we have an invalid property here we already issued a warning. 997 if (TIProperty.Kind == TraitProperty::invalid) { 998 if (PropertyLoc != Tok.getLocation()) 999 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1000 << CONTEXT_TRAIT_LVL; 1001 return; 1002 } 1003 1004 if (isValidTraitPropertyForTraitSetAndSelector(TIProperty.Kind, 1005 TISelector.Kind, Set)) { 1006 1007 // If we make it here the property, selector, set, score, condition, ... are 1008 // all valid (or have been corrected). Thus we can record the property. 1009 TISelector.Properties.push_back(TIProperty); 1010 return; 1011 } 1012 1013 Diag(PropertyLoc, diag::warn_omp_ctx_incompatible_property_for_selector) 1014 << getOpenMPContextTraitPropertyName(TIProperty.Kind, 1015 TIProperty.RawString) 1016 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1017 << getOpenMPContextTraitSetName(Set); 1018 Diag(PropertyLoc, diag::note_omp_ctx_compatible_set_and_selector_for_property) 1019 << getOpenMPContextTraitPropertyName(TIProperty.Kind, 1020 TIProperty.RawString) 1021 << getOpenMPContextTraitSelectorName( 1022 getOpenMPContextTraitSelectorForProperty(TIProperty.Kind)) 1023 << getOpenMPContextTraitSetName( 1024 getOpenMPContextTraitSetForProperty(TIProperty.Kind)); 1025 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1026 << CONTEXT_TRAIT_LVL; 1027 } 1028 1029 void Parser::parseOMPTraitSelectorKind(OMPTraitSelector &TISelector, 1030 llvm::omp::TraitSet Set, 1031 llvm::StringMap<SourceLocation> &Seen) { 1032 TISelector.Kind = TraitSelector::invalid; 1033 1034 SourceLocation NameLoc = Tok.getLocation(); 1035 StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_SELECTOR_LVL); 1036 if (Name.empty()) { 1037 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options) 1038 << CONTEXT_SELECTOR_LVL << listOpenMPContextTraitSelectors(Set); 1039 return; 1040 } 1041 1042 TISelector.Kind = getOpenMPContextTraitSelectorKind(Name); 1043 if (TISelector.Kind != TraitSelector::invalid) { 1044 if (checkForDuplicates(*this, Name, NameLoc, Seen, CONTEXT_SELECTOR_LVL)) 1045 TISelector.Kind = TraitSelector::invalid; 1046 return; 1047 } 1048 1049 // It follows diagnosis and helping notes. 1050 Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_selector) 1051 << Name << getOpenMPContextTraitSetName(Set); 1052 1053 TraitSet SetForName = getOpenMPContextTraitSetKind(Name); 1054 if (SetForName != TraitSet::invalid) { 1055 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1056 << Name << CONTEXT_SELECTOR_SET_LVL << CONTEXT_SELECTOR_LVL; 1057 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1058 << Name << "<selector-name>" 1059 << "<property-name>"; 1060 return; 1061 } 1062 for (const auto &PotentialSet : 1063 {TraitSet::construct, TraitSet::user, TraitSet::implementation, 1064 TraitSet::device}) { 1065 TraitProperty PropertyForName = getOpenMPContextTraitPropertyKind( 1066 PotentialSet, TraitSelector::invalid, Name); 1067 if (PropertyForName == TraitProperty::invalid) 1068 continue; 1069 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1070 << Name << CONTEXT_TRAIT_LVL << CONTEXT_SELECTOR_LVL; 1071 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1072 << getOpenMPContextTraitSetName( 1073 getOpenMPContextTraitSetForProperty(PropertyForName)) 1074 << getOpenMPContextTraitSelectorName( 1075 getOpenMPContextTraitSelectorForProperty(PropertyForName)) 1076 << ("(" + Name + ")").str(); 1077 return; 1078 } 1079 Diag(NameLoc, diag::note_omp_declare_variant_ctx_options) 1080 << CONTEXT_SELECTOR_LVL << listOpenMPContextTraitSelectors(Set); 1081 } 1082 1083 /// Parse optional 'score' '(' <expr> ')' ':'. 1084 static ExprResult parseContextScore(Parser &P) { 1085 ExprResult ScoreExpr; 1086 llvm::SmallString<16> Buffer; 1087 StringRef SelectorName = 1088 P.getPreprocessor().getSpelling(P.getCurToken(), Buffer); 1089 if (!SelectorName.equals("score")) 1090 return ScoreExpr; 1091 (void)P.ConsumeToken(); 1092 SourceLocation RLoc; 1093 ScoreExpr = P.ParseOpenMPParensExpr(SelectorName, RLoc); 1094 // Parse ':' 1095 if (P.getCurToken().is(tok::colon)) 1096 (void)P.ConsumeAnyToken(); 1097 else 1098 P.Diag(P.getCurToken(), diag::warn_omp_declare_variant_expected) 1099 << "':'" 1100 << "score expression"; 1101 return ScoreExpr; 1102 } 1103 1104 /// Parses an OpenMP context selector. 1105 /// 1106 /// <trait-selector-name> ['('[<trait-score>] <trait-property> [, <t-p>]* ')'] 1107 void Parser::parseOMPContextSelector( 1108 OMPTraitSelector &TISelector, llvm::omp::TraitSet Set, 1109 llvm::StringMap<SourceLocation> &SeenSelectors) { 1110 unsigned short OuterPC = ParenCount; 1111 1112 // If anything went wrong we issue an error or warning and then skip the rest 1113 // of the selector. However, commas are ambiguous so we look for the nesting 1114 // of parentheses here as well. 1115 auto FinishSelector = [OuterPC, this]() -> void { 1116 bool Done = false; 1117 while (!Done) { 1118 while (!SkipUntil({tok::r_brace, tok::r_paren, tok::comma, 1119 tok::annot_pragma_openmp_end}, 1120 StopBeforeMatch)) 1121 ; 1122 if (Tok.is(tok::r_paren) && OuterPC > ParenCount) 1123 (void)ConsumeParen(); 1124 if (OuterPC <= ParenCount) { 1125 Done = true; 1126 break; 1127 } 1128 if (!Tok.is(tok::comma) && !Tok.is(tok::r_paren)) { 1129 Done = true; 1130 break; 1131 } 1132 (void)ConsumeAnyToken(); 1133 } 1134 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1135 << CONTEXT_SELECTOR_LVL; 1136 }; 1137 1138 SourceLocation SelectorLoc = Tok.getLocation(); 1139 parseOMPTraitSelectorKind(TISelector, Set, SeenSelectors); 1140 if (TISelector.Kind == TraitSelector::invalid) 1141 return FinishSelector(); 1142 1143 bool AllowsTraitScore = false; 1144 bool RequiresProperty = false; 1145 if (!isValidTraitSelectorForTraitSet(TISelector.Kind, Set, AllowsTraitScore, 1146 RequiresProperty)) { 1147 Diag(SelectorLoc, diag::warn_omp_ctx_incompatible_selector_for_set) 1148 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1149 << getOpenMPContextTraitSetName(Set); 1150 Diag(SelectorLoc, diag::note_omp_ctx_compatible_set_for_selector) 1151 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1152 << getOpenMPContextTraitSetName( 1153 getOpenMPContextTraitSetForSelector(TISelector.Kind)) 1154 << RequiresProperty; 1155 return FinishSelector(); 1156 } 1157 1158 if (!RequiresProperty) { 1159 TISelector.Properties.push_back( 1160 {getOpenMPContextTraitPropertyForSelector(TISelector.Kind), 1161 getOpenMPContextTraitSelectorName(TISelector.Kind)}); 1162 return; 1163 } 1164 1165 if (!Tok.is(tok::l_paren)) { 1166 Diag(SelectorLoc, diag::warn_omp_ctx_selector_without_properties) 1167 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1168 << getOpenMPContextTraitSetName(Set); 1169 return FinishSelector(); 1170 } 1171 1172 if (TISelector.Kind == TraitSelector::user_condition) { 1173 SourceLocation RLoc; 1174 ExprResult Condition = ParseOpenMPParensExpr("user condition", RLoc); 1175 if (!Condition.isUsable()) 1176 return FinishSelector(); 1177 TISelector.ScoreOrCondition = Condition.get(); 1178 TISelector.Properties.push_back( 1179 {TraitProperty::user_condition_unknown, "<condition>"}); 1180 return; 1181 } 1182 1183 BalancedDelimiterTracker BDT(*this, tok::l_paren, 1184 tok::annot_pragma_openmp_end); 1185 // Parse '('. 1186 (void)BDT.consumeOpen(); 1187 1188 SourceLocation ScoreLoc = Tok.getLocation(); 1189 ExprResult Score = parseContextScore(*this); 1190 1191 if (!AllowsTraitScore && !Score.isUnset()) { 1192 if (Score.isUsable()) { 1193 Diag(ScoreLoc, diag::warn_omp_ctx_incompatible_score_for_property) 1194 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1195 << getOpenMPContextTraitSetName(Set) << Score.get(); 1196 } else { 1197 Diag(ScoreLoc, diag::warn_omp_ctx_incompatible_score_for_property) 1198 << getOpenMPContextTraitSelectorName(TISelector.Kind) 1199 << getOpenMPContextTraitSetName(Set) << "<invalid>"; 1200 } 1201 Score = ExprResult(); 1202 } 1203 1204 if (Score.isUsable()) 1205 TISelector.ScoreOrCondition = Score.get(); 1206 1207 llvm::StringMap<SourceLocation> SeenProperties; 1208 do { 1209 parseOMPContextProperty(TISelector, Set, SeenProperties); 1210 } while (TryConsumeToken(tok::comma)); 1211 1212 // Parse ')'. 1213 BDT.consumeClose(); 1214 } 1215 1216 void Parser::parseOMPTraitSetKind(OMPTraitSet &TISet, 1217 llvm::StringMap<SourceLocation> &Seen) { 1218 TISet.Kind = TraitSet::invalid; 1219 1220 SourceLocation NameLoc = Tok.getLocation(); 1221 StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_SELECTOR_SET_LVL); 1222 if (Name.empty()) { 1223 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options) 1224 << CONTEXT_SELECTOR_SET_LVL << listOpenMPContextTraitSets(); 1225 return; 1226 } 1227 1228 TISet.Kind = getOpenMPContextTraitSetKind(Name); 1229 if (TISet.Kind != TraitSet::invalid) { 1230 if (checkForDuplicates(*this, Name, NameLoc, Seen, 1231 CONTEXT_SELECTOR_SET_LVL)) 1232 TISet.Kind = TraitSet::invalid; 1233 return; 1234 } 1235 1236 // It follows diagnosis and helping notes. 1237 Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_set) << Name; 1238 1239 TraitSelector SelectorForName = getOpenMPContextTraitSelectorKind(Name); 1240 if (SelectorForName != TraitSelector::invalid) { 1241 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1242 << Name << CONTEXT_SELECTOR_LVL << CONTEXT_SELECTOR_SET_LVL; 1243 bool AllowsTraitScore = false; 1244 bool RequiresProperty = false; 1245 isValidTraitSelectorForTraitSet( 1246 SelectorForName, getOpenMPContextTraitSetForSelector(SelectorForName), 1247 AllowsTraitScore, RequiresProperty); 1248 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1249 << getOpenMPContextTraitSetName( 1250 getOpenMPContextTraitSetForSelector(SelectorForName)) 1251 << Name << (RequiresProperty ? "(<property-name>)" : ""); 1252 return; 1253 } 1254 for (const auto &PotentialSet : 1255 {TraitSet::construct, TraitSet::user, TraitSet::implementation, 1256 TraitSet::device}) { 1257 TraitProperty PropertyForName = getOpenMPContextTraitPropertyKind( 1258 PotentialSet, TraitSelector::invalid, Name); 1259 if (PropertyForName == TraitProperty::invalid) 1260 continue; 1261 Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a) 1262 << Name << CONTEXT_TRAIT_LVL << CONTEXT_SELECTOR_SET_LVL; 1263 Diag(NameLoc, diag::note_omp_declare_variant_ctx_try) 1264 << getOpenMPContextTraitSetName( 1265 getOpenMPContextTraitSetForProperty(PropertyForName)) 1266 << getOpenMPContextTraitSelectorName( 1267 getOpenMPContextTraitSelectorForProperty(PropertyForName)) 1268 << ("(" + Name + ")").str(); 1269 return; 1270 } 1271 Diag(NameLoc, diag::note_omp_declare_variant_ctx_options) 1272 << CONTEXT_SELECTOR_SET_LVL << listOpenMPContextTraitSets(); 1273 } 1274 1275 /// Parses an OpenMP context selector set. 1276 /// 1277 /// <trait-set-selector-name> '=' '{' <trait-selector> [, <trait-selector>]* '}' 1278 void Parser::parseOMPContextSelectorSet( 1279 OMPTraitSet &TISet, llvm::StringMap<SourceLocation> &SeenSets) { 1280 auto OuterBC = BraceCount; 1281 1282 // If anything went wrong we issue an error or warning and then skip the rest 1283 // of the set. However, commas are ambiguous so we look for the nesting 1284 // of braces here as well. 1285 auto FinishSelectorSet = [this, OuterBC]() -> void { 1286 bool Done = false; 1287 while (!Done) { 1288 while (!SkipUntil({tok::comma, tok::r_brace, tok::r_paren, 1289 tok::annot_pragma_openmp_end}, 1290 StopBeforeMatch)) 1291 ; 1292 if (Tok.is(tok::r_brace) && OuterBC > BraceCount) 1293 (void)ConsumeBrace(); 1294 if (OuterBC <= BraceCount) { 1295 Done = true; 1296 break; 1297 } 1298 if (!Tok.is(tok::comma) && !Tok.is(tok::r_brace)) { 1299 Done = true; 1300 break; 1301 } 1302 (void)ConsumeAnyToken(); 1303 } 1304 Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here) 1305 << CONTEXT_SELECTOR_SET_LVL; 1306 }; 1307 1308 parseOMPTraitSetKind(TISet, SeenSets); 1309 if (TISet.Kind == TraitSet::invalid) 1310 return FinishSelectorSet(); 1311 1312 // Parse '='. 1313 if (!TryConsumeToken(tok::equal)) 1314 Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected) 1315 << "=" 1316 << ("context set name \"" + getOpenMPContextTraitSetName(TISet.Kind) + 1317 "\"") 1318 .str(); 1319 1320 // Parse '{'. 1321 if (Tok.is(tok::l_brace)) { 1322 (void)ConsumeBrace(); 1323 } else { 1324 Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected) 1325 << "{" 1326 << ("'=' that follows the context set name \"" + 1327 getOpenMPContextTraitSetName(TISet.Kind) + "\"") 1328 .str(); 1329 } 1330 1331 llvm::StringMap<SourceLocation> SeenSelectors; 1332 do { 1333 OMPTraitSelector TISelector; 1334 parseOMPContextSelector(TISelector, TISet.Kind, SeenSelectors); 1335 if (TISelector.Kind != TraitSelector::invalid && 1336 !TISelector.Properties.empty()) 1337 TISet.Selectors.push_back(TISelector); 1338 } while (TryConsumeToken(tok::comma)); 1339 1340 // Parse '}'. 1341 if (Tok.is(tok::r_brace)) { 1342 (void)ConsumeBrace(); 1343 } else { 1344 Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected) 1345 << "}" 1346 << ("context selectors for the context set \"" + 1347 getOpenMPContextTraitSetName(TISet.Kind) + "\"") 1348 .str(); 1349 } 1350 } 1351 1352 /// Parse OpenMP context selectors: 1353 /// 1354 /// <trait-set-selector> [, <trait-set-selector>]* 1355 bool Parser::parseOMPContextSelectors(SourceLocation Loc, OMPTraitInfo &TI) { 1356 llvm::StringMap<SourceLocation> SeenSets; 1357 do { 1358 OMPTraitSet TISet; 1359 parseOMPContextSelectorSet(TISet, SeenSets); 1360 if (TISet.Kind != TraitSet::invalid && !TISet.Selectors.empty()) 1361 TI.Sets.push_back(TISet); 1362 } while (TryConsumeToken(tok::comma)); 1363 1364 return false; 1365 } 1366 1367 /// Parse clauses for '#pragma omp declare variant ( variant-func-id ) clause'. 1368 void Parser::ParseOMPDeclareVariantClauses(Parser::DeclGroupPtrTy Ptr, 1369 CachedTokens &Toks, 1370 SourceLocation Loc) { 1371 PP.EnterToken(Tok, /*IsReinject*/ true); 1372 PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true, 1373 /*IsReinject*/ true); 1374 // Consume the previously pushed token. 1375 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 1376 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true); 1377 1378 FNContextRAII FnContext(*this, Ptr); 1379 // Parse function declaration id. 1380 SourceLocation RLoc; 1381 // Parse with IsAddressOfOperand set to true to parse methods as DeclRefExprs 1382 // instead of MemberExprs. 1383 ExprResult AssociatedFunction; 1384 { 1385 // Do not mark function as is used to prevent its emission if this is the 1386 // only place where it is used. 1387 EnterExpressionEvaluationContext Unevaluated( 1388 Actions, Sema::ExpressionEvaluationContext::Unevaluated); 1389 AssociatedFunction = ParseOpenMPParensExpr( 1390 getOpenMPDirectiveName(OMPD_declare_variant), RLoc, 1391 /*IsAddressOfOperand=*/true); 1392 } 1393 if (!AssociatedFunction.isUsable()) { 1394 if (!Tok.is(tok::annot_pragma_openmp_end)) 1395 while (!SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch)) 1396 ; 1397 // Skip the last annot_pragma_openmp_end. 1398 (void)ConsumeAnnotationToken(); 1399 return; 1400 } 1401 1402 OMPTraitInfo *ParentTI = Actions.getOMPTraitInfoForSurroundingScope(); 1403 ASTContext &ASTCtx = Actions.getASTContext(); 1404 OMPTraitInfo &TI = ASTCtx.getNewOMPTraitInfo(); 1405 if (parseOMPDeclareVariantMatchClause(Loc, TI, ParentTI)) 1406 return; 1407 1408 Optional<std::pair<FunctionDecl *, Expr *>> DeclVarData = 1409 Actions.checkOpenMPDeclareVariantFunction( 1410 Ptr, AssociatedFunction.get(), TI, 1411 SourceRange(Loc, Tok.getLocation())); 1412 1413 // Skip last tokens. 1414 while (Tok.isNot(tok::annot_pragma_openmp_end)) 1415 ConsumeAnyToken(); 1416 if (DeclVarData && !TI.Sets.empty()) 1417 Actions.ActOnOpenMPDeclareVariantDirective( 1418 DeclVarData->first, DeclVarData->second, TI, 1419 SourceRange(Loc, Tok.getLocation())); 1420 1421 // Skip the last annot_pragma_openmp_end. 1422 (void)ConsumeAnnotationToken(); 1423 } 1424 1425 bool Parser::parseOMPDeclareVariantMatchClause(SourceLocation Loc, 1426 OMPTraitInfo &TI, 1427 OMPTraitInfo *ParentTI) { 1428 // Parse 'match'. 1429 OpenMPClauseKind CKind = Tok.isAnnotation() 1430 ? OMPC_unknown 1431 : getOpenMPClauseKind(PP.getSpelling(Tok)); 1432 if (CKind != OMPC_match) { 1433 Diag(Tok.getLocation(), diag::err_omp_declare_variant_wrong_clause) 1434 << getOpenMPClauseName(OMPC_match); 1435 while (!SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch)) 1436 ; 1437 // Skip the last annot_pragma_openmp_end. 1438 (void)ConsumeAnnotationToken(); 1439 return true; 1440 } 1441 (void)ConsumeToken(); 1442 // Parse '('. 1443 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 1444 if (T.expectAndConsume(diag::err_expected_lparen_after, 1445 getOpenMPClauseName(OMPC_match).data())) { 1446 while (!SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch)) 1447 ; 1448 // Skip the last annot_pragma_openmp_end. 1449 (void)ConsumeAnnotationToken(); 1450 return true; 1451 } 1452 1453 // Parse inner context selectors. 1454 parseOMPContextSelectors(Loc, TI); 1455 1456 // Parse ')' 1457 (void)T.consumeClose(); 1458 1459 if (!ParentTI) 1460 return false; 1461 1462 // Merge the parent/outer trait info into the one we just parsed and diagnose 1463 // problems. 1464 // TODO: Keep some source location in the TI to provide better diagnostics. 1465 // TODO: Perform some kind of equivalence check on the condition and score 1466 // expressions. 1467 for (const OMPTraitSet &ParentSet : ParentTI->Sets) { 1468 bool MergedSet = false; 1469 for (OMPTraitSet &Set : TI.Sets) { 1470 if (Set.Kind != ParentSet.Kind) 1471 continue; 1472 MergedSet = true; 1473 for (const OMPTraitSelector &ParentSelector : ParentSet.Selectors) { 1474 bool MergedSelector = false; 1475 for (OMPTraitSelector &Selector : Set.Selectors) { 1476 if (Selector.Kind != ParentSelector.Kind) 1477 continue; 1478 MergedSelector = true; 1479 for (const OMPTraitProperty &ParentProperty : 1480 ParentSelector.Properties) { 1481 bool MergedProperty = false; 1482 for (OMPTraitProperty &Property : Selector.Properties) { 1483 // Ignore "equivalent" properties. 1484 if (Property.Kind != ParentProperty.Kind) 1485 continue; 1486 1487 // If the kind is the same but the raw string not, we don't want 1488 // to skip out on the property. 1489 MergedProperty |= Property.RawString == ParentProperty.RawString; 1490 1491 if (Property.RawString == ParentProperty.RawString && 1492 Selector.ScoreOrCondition == ParentSelector.ScoreOrCondition) 1493 continue; 1494 1495 if (Selector.Kind == llvm::omp::TraitSelector::user_condition) { 1496 Diag(Loc, diag::err_omp_declare_variant_nested_user_condition); 1497 } else if (Selector.ScoreOrCondition != 1498 ParentSelector.ScoreOrCondition) { 1499 Diag(Loc, diag::err_omp_declare_variant_duplicate_nested_trait) 1500 << getOpenMPContextTraitPropertyName( 1501 ParentProperty.Kind, ParentProperty.RawString) 1502 << getOpenMPContextTraitSelectorName(ParentSelector.Kind) 1503 << getOpenMPContextTraitSetName(ParentSet.Kind); 1504 } 1505 } 1506 if (!MergedProperty) 1507 Selector.Properties.push_back(ParentProperty); 1508 } 1509 } 1510 if (!MergedSelector) 1511 Set.Selectors.push_back(ParentSelector); 1512 } 1513 } 1514 if (!MergedSet) 1515 TI.Sets.push_back(ParentSet); 1516 } 1517 1518 return false; 1519 } 1520 1521 /// `omp assumes` or `omp begin/end assumes` <clause> [[,]<clause>]... 1522 /// where 1523 /// 1524 /// clause: 1525 /// 'ext_IMPL_DEFINED' 1526 /// 'absent' '(' directive-name [, directive-name]* ')' 1527 /// 'contains' '(' directive-name [, directive-name]* ')' 1528 /// 'holds' '(' scalar-expression ')' 1529 /// 'no_openmp' 1530 /// 'no_openmp_routines' 1531 /// 'no_parallelism' 1532 /// 1533 void Parser::ParseOpenMPAssumesDirective(OpenMPDirectiveKind DKind, 1534 SourceLocation Loc) { 1535 SmallVector<StringRef, 4> Assumptions; 1536 bool SkippedClauses = false; 1537 1538 auto SkipBraces = [&](llvm::StringRef Spelling, bool IssueNote) { 1539 BalancedDelimiterTracker T(*this, tok::l_paren, 1540 tok::annot_pragma_openmp_end); 1541 if (T.expectAndConsume(diag::err_expected_lparen_after, Spelling.data())) 1542 return; 1543 T.skipToEnd(); 1544 if (IssueNote && T.getCloseLocation().isValid()) 1545 Diag(T.getCloseLocation(), 1546 diag::note_omp_assumption_clause_continue_here); 1547 }; 1548 1549 /// Helper to determine which AssumptionClauseMapping (ACM) in the 1550 /// AssumptionClauseMappings table matches \p RawString. The return value is 1551 /// the index of the matching ACM into the table or -1 if there was no match. 1552 auto MatchACMClause = [&](StringRef RawString) { 1553 llvm::StringSwitch<int> SS(RawString); 1554 unsigned ACMIdx = 0; 1555 for (const AssumptionClauseMappingInfo &ACMI : AssumptionClauseMappings) { 1556 if (ACMI.StartsWith) 1557 SS.StartsWith(ACMI.Identifier, ACMIdx++); 1558 else 1559 SS.Case(ACMI.Identifier, ACMIdx++); 1560 } 1561 return SS.Default(-1); 1562 }; 1563 1564 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1565 IdentifierInfo *II = nullptr; 1566 SourceLocation StartLoc = Tok.getLocation(); 1567 int Idx = -1; 1568 if (Tok.isAnyIdentifier()) { 1569 II = Tok.getIdentifierInfo(); 1570 Idx = MatchACMClause(II->getName()); 1571 } 1572 ConsumeAnyToken(); 1573 1574 bool NextIsLPar = Tok.is(tok::l_paren); 1575 // Handle unknown clauses by skipping them. 1576 if (Idx == -1) { 1577 Diag(StartLoc, diag::warn_omp_unknown_assumption_clause_missing_id) 1578 << llvm::omp::getOpenMPDirectiveName(DKind) 1579 << llvm::omp::getAllAssumeClauseOptions() << NextIsLPar; 1580 if (NextIsLPar) 1581 SkipBraces(II ? II->getName() : "", /* IssueNote */ true); 1582 SkippedClauses = true; 1583 continue; 1584 } 1585 const AssumptionClauseMappingInfo &ACMI = AssumptionClauseMappings[Idx]; 1586 if (ACMI.HasDirectiveList || ACMI.HasExpression) { 1587 // TODO: We ignore absent, contains, and holds assumptions for now. We 1588 // also do not verify the content in the parenthesis at all. 1589 SkippedClauses = true; 1590 SkipBraces(II->getName(), /* IssueNote */ false); 1591 continue; 1592 } 1593 1594 if (NextIsLPar) { 1595 Diag(Tok.getLocation(), 1596 diag::warn_omp_unknown_assumption_clause_without_args) 1597 << II; 1598 SkipBraces(II->getName(), /* IssueNote */ true); 1599 } 1600 1601 assert(II && "Expected an identifier clause!"); 1602 StringRef Assumption = II->getName(); 1603 if (ACMI.StartsWith) 1604 Assumption = Assumption.substr(ACMI.Identifier.size()); 1605 Assumptions.push_back(Assumption); 1606 } 1607 1608 Actions.ActOnOpenMPAssumesDirective(Loc, DKind, Assumptions, SkippedClauses); 1609 } 1610 1611 void Parser::ParseOpenMPEndAssumesDirective(SourceLocation Loc) { 1612 if (Actions.isInOpenMPAssumeScope()) 1613 Actions.ActOnOpenMPEndAssumesDirective(); 1614 else 1615 Diag(Loc, diag::err_expected_begin_assumes); 1616 } 1617 1618 /// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'. 1619 /// 1620 /// default-clause: 1621 /// 'default' '(' 'none' | 'shared' | 'firstprivate' ') 1622 /// 1623 /// proc_bind-clause: 1624 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ') 1625 /// 1626 /// device_type-clause: 1627 /// 'device_type' '(' 'host' | 'nohost' | 'any' )' 1628 namespace { 1629 struct SimpleClauseData { 1630 unsigned Type; 1631 SourceLocation Loc; 1632 SourceLocation LOpen; 1633 SourceLocation TypeLoc; 1634 SourceLocation RLoc; 1635 SimpleClauseData(unsigned Type, SourceLocation Loc, SourceLocation LOpen, 1636 SourceLocation TypeLoc, SourceLocation RLoc) 1637 : Type(Type), Loc(Loc), LOpen(LOpen), TypeLoc(TypeLoc), RLoc(RLoc) {} 1638 }; 1639 } // anonymous namespace 1640 1641 static Optional<SimpleClauseData> 1642 parseOpenMPSimpleClause(Parser &P, OpenMPClauseKind Kind) { 1643 const Token &Tok = P.getCurToken(); 1644 SourceLocation Loc = Tok.getLocation(); 1645 SourceLocation LOpen = P.ConsumeToken(); 1646 // Parse '('. 1647 BalancedDelimiterTracker T(P, tok::l_paren, tok::annot_pragma_openmp_end); 1648 if (T.expectAndConsume(diag::err_expected_lparen_after, 1649 getOpenMPClauseName(Kind).data())) 1650 return llvm::None; 1651 1652 unsigned Type = getOpenMPSimpleClauseType( 1653 Kind, Tok.isAnnotation() ? "" : P.getPreprocessor().getSpelling(Tok), 1654 P.getLangOpts().OpenMP); 1655 SourceLocation TypeLoc = Tok.getLocation(); 1656 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 1657 Tok.isNot(tok::annot_pragma_openmp_end)) 1658 P.ConsumeAnyToken(); 1659 1660 // Parse ')'. 1661 SourceLocation RLoc = Tok.getLocation(); 1662 if (!T.consumeClose()) 1663 RLoc = T.getCloseLocation(); 1664 1665 return SimpleClauseData(Type, Loc, LOpen, TypeLoc, RLoc); 1666 } 1667 1668 void Parser::ParseOMPDeclareTargetClauses( 1669 Sema::DeclareTargetContextInfo &DTCI) { 1670 SourceLocation DeviceTypeLoc; 1671 bool RequiresToOrLinkClause = false; 1672 bool HasToOrLinkClause = false; 1673 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1674 OMPDeclareTargetDeclAttr::MapTypeTy MT = OMPDeclareTargetDeclAttr::MT_To; 1675 bool HasIdentifier = Tok.is(tok::identifier); 1676 if (HasIdentifier) { 1677 // If we see any clause we need a to or link clause. 1678 RequiresToOrLinkClause = true; 1679 IdentifierInfo *II = Tok.getIdentifierInfo(); 1680 StringRef ClauseName = II->getName(); 1681 bool IsDeviceTypeClause = 1682 getLangOpts().OpenMP >= 50 && 1683 getOpenMPClauseKind(ClauseName) == OMPC_device_type; 1684 1685 bool IsToOrLinkClause = 1686 OMPDeclareTargetDeclAttr::ConvertStrToMapTypeTy(ClauseName, MT); 1687 assert((!IsDeviceTypeClause || !IsToOrLinkClause) && "Cannot be both!"); 1688 1689 if (!IsDeviceTypeClause && DTCI.Kind == OMPD_begin_declare_target) { 1690 Diag(Tok, diag::err_omp_declare_target_unexpected_clause) 1691 << ClauseName << 0; 1692 break; 1693 } 1694 if (!IsDeviceTypeClause && !IsToOrLinkClause) { 1695 Diag(Tok, diag::err_omp_declare_target_unexpected_clause) 1696 << ClauseName << (getLangOpts().OpenMP >= 50 ? 2 : 1); 1697 break; 1698 } 1699 1700 if (IsToOrLinkClause) 1701 HasToOrLinkClause = true; 1702 1703 // Parse 'device_type' clause and go to next clause if any. 1704 if (IsDeviceTypeClause) { 1705 Optional<SimpleClauseData> DevTypeData = 1706 parseOpenMPSimpleClause(*this, OMPC_device_type); 1707 if (DevTypeData.hasValue()) { 1708 if (DeviceTypeLoc.isValid()) { 1709 // We already saw another device_type clause, diagnose it. 1710 Diag(DevTypeData.getValue().Loc, 1711 diag::warn_omp_more_one_device_type_clause); 1712 break; 1713 } 1714 switch (static_cast<OpenMPDeviceType>(DevTypeData.getValue().Type)) { 1715 case OMPC_DEVICE_TYPE_any: 1716 DTCI.DT = OMPDeclareTargetDeclAttr::DT_Any; 1717 break; 1718 case OMPC_DEVICE_TYPE_host: 1719 DTCI.DT = OMPDeclareTargetDeclAttr::DT_Host; 1720 break; 1721 case OMPC_DEVICE_TYPE_nohost: 1722 DTCI.DT = OMPDeclareTargetDeclAttr::DT_NoHost; 1723 break; 1724 case OMPC_DEVICE_TYPE_unknown: 1725 llvm_unreachable("Unexpected device_type"); 1726 } 1727 DeviceTypeLoc = DevTypeData.getValue().Loc; 1728 } 1729 continue; 1730 } 1731 ConsumeToken(); 1732 } 1733 1734 if (DTCI.Kind == OMPD_declare_target || HasIdentifier) { 1735 auto &&Callback = [this, MT, &DTCI](CXXScopeSpec &SS, 1736 DeclarationNameInfo NameInfo) { 1737 NamedDecl *ND = 1738 Actions.lookupOpenMPDeclareTargetName(getCurScope(), SS, NameInfo); 1739 if (!ND) 1740 return; 1741 Sema::DeclareTargetContextInfo::MapInfo MI{MT, NameInfo.getLoc()}; 1742 bool FirstMapping = DTCI.ExplicitlyMapped.try_emplace(ND, MI).second; 1743 if (!FirstMapping) 1744 Diag(NameInfo.getLoc(), diag::err_omp_declare_target_multiple) 1745 << NameInfo.getName(); 1746 }; 1747 if (ParseOpenMPSimpleVarList(OMPD_declare_target, Callback, 1748 /*AllowScopeSpecifier=*/true)) 1749 break; 1750 } 1751 1752 if (Tok.is(tok::l_paren)) { 1753 Diag(Tok, 1754 diag::err_omp_begin_declare_target_unexpected_implicit_to_clause); 1755 break; 1756 } 1757 if (!HasIdentifier && Tok.isNot(tok::annot_pragma_openmp_end)) { 1758 Diag(Tok, 1759 diag::err_omp_declare_target_unexpected_clause_after_implicit_to); 1760 break; 1761 } 1762 1763 // Consume optional ','. 1764 if (Tok.is(tok::comma)) 1765 ConsumeToken(); 1766 } 1767 1768 // For declare target require at least 'to' or 'link' to be present. 1769 if (DTCI.Kind == OMPD_declare_target && RequiresToOrLinkClause && 1770 !HasToOrLinkClause) 1771 Diag(DTCI.Loc, diag::err_omp_declare_target_missing_to_or_link_clause); 1772 1773 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 1774 } 1775 1776 void Parser::skipUntilPragmaOpenMPEnd(OpenMPDirectiveKind DKind) { 1777 // The last seen token is annot_pragma_openmp_end - need to check for 1778 // extra tokens. 1779 if (Tok.is(tok::annot_pragma_openmp_end)) 1780 return; 1781 1782 Diag(Tok, diag::warn_omp_extra_tokens_at_eol) 1783 << getOpenMPDirectiveName(DKind); 1784 while (Tok.isNot(tok::annot_pragma_openmp_end)) 1785 ConsumeAnyToken(); 1786 } 1787 1788 void Parser::parseOMPEndDirective(OpenMPDirectiveKind BeginKind, 1789 OpenMPDirectiveKind ExpectedKind, 1790 OpenMPDirectiveKind FoundKind, 1791 SourceLocation BeginLoc, 1792 SourceLocation FoundLoc, 1793 bool SkipUntilOpenMPEnd) { 1794 int DiagSelection = ExpectedKind == OMPD_end_declare_target ? 0 : 1; 1795 1796 if (FoundKind == ExpectedKind) { 1797 ConsumeAnyToken(); 1798 skipUntilPragmaOpenMPEnd(ExpectedKind); 1799 return; 1800 } 1801 1802 Diag(FoundLoc, diag::err_expected_end_declare_target_or_variant) 1803 << DiagSelection; 1804 Diag(BeginLoc, diag::note_matching) 1805 << ("'#pragma omp " + getOpenMPDirectiveName(BeginKind) + "'").str(); 1806 if (SkipUntilOpenMPEnd) 1807 SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch); 1808 } 1809 1810 void Parser::ParseOMPEndDeclareTargetDirective(OpenMPDirectiveKind BeginDKind, 1811 OpenMPDirectiveKind EndDKind, 1812 SourceLocation DKLoc) { 1813 parseOMPEndDirective(BeginDKind, OMPD_end_declare_target, EndDKind, DKLoc, 1814 Tok.getLocation(), 1815 /* SkipUntilOpenMPEnd */ false); 1816 // Skip the last annot_pragma_openmp_end. 1817 if (Tok.is(tok::annot_pragma_openmp_end)) 1818 ConsumeAnnotationToken(); 1819 } 1820 1821 /// Parsing of declarative OpenMP directives. 1822 /// 1823 /// threadprivate-directive: 1824 /// annot_pragma_openmp 'threadprivate' simple-variable-list 1825 /// annot_pragma_openmp_end 1826 /// 1827 /// allocate-directive: 1828 /// annot_pragma_openmp 'allocate' simple-variable-list [<clause>] 1829 /// annot_pragma_openmp_end 1830 /// 1831 /// declare-reduction-directive: 1832 /// annot_pragma_openmp 'declare' 'reduction' [...] 1833 /// annot_pragma_openmp_end 1834 /// 1835 /// declare-mapper-directive: 1836 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':'] 1837 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 1838 /// annot_pragma_openmp_end 1839 /// 1840 /// declare-simd-directive: 1841 /// annot_pragma_openmp 'declare simd' {<clause> [,]} 1842 /// annot_pragma_openmp_end 1843 /// <function declaration/definition> 1844 /// 1845 /// requires directive: 1846 /// annot_pragma_openmp 'requires' <clause> [[[,] <clause>] ... ] 1847 /// annot_pragma_openmp_end 1848 /// 1849 /// assumes directive: 1850 /// annot_pragma_openmp 'assumes' <clause> [[[,] <clause>] ... ] 1851 /// annot_pragma_openmp_end 1852 /// or 1853 /// annot_pragma_openmp 'begin assumes' <clause> [[[,] <clause>] ... ] 1854 /// annot_pragma_openmp 'end assumes' 1855 /// annot_pragma_openmp_end 1856 /// 1857 Parser::DeclGroupPtrTy Parser::ParseOpenMPDeclarativeDirectiveWithExtDecl( 1858 AccessSpecifier &AS, ParsedAttributesWithRange &Attrs, bool Delayed, 1859 DeclSpec::TST TagType, Decl *Tag) { 1860 assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!"); 1861 ParsingOpenMPDirectiveRAII DirScope(*this); 1862 ParenBraceBracketBalancer BalancerRAIIObj(*this); 1863 1864 SourceLocation Loc; 1865 OpenMPDirectiveKind DKind; 1866 if (Delayed) { 1867 TentativeParsingAction TPA(*this); 1868 Loc = ConsumeAnnotationToken(); 1869 DKind = parseOpenMPDirectiveKind(*this); 1870 if (DKind == OMPD_declare_reduction || DKind == OMPD_declare_mapper) { 1871 // Need to delay parsing until completion of the parent class. 1872 TPA.Revert(); 1873 CachedTokens Toks; 1874 unsigned Cnt = 1; 1875 Toks.push_back(Tok); 1876 while (Cnt && Tok.isNot(tok::eof)) { 1877 (void)ConsumeAnyToken(); 1878 if (Tok.is(tok::annot_pragma_openmp)) 1879 ++Cnt; 1880 else if (Tok.is(tok::annot_pragma_openmp_end)) 1881 --Cnt; 1882 Toks.push_back(Tok); 1883 } 1884 // Skip last annot_pragma_openmp_end. 1885 if (Cnt == 0) 1886 (void)ConsumeAnyToken(); 1887 auto *LP = new LateParsedPragma(this, AS); 1888 LP->takeToks(Toks); 1889 getCurrentClass().LateParsedDeclarations.push_back(LP); 1890 return nullptr; 1891 } 1892 TPA.Commit(); 1893 } else { 1894 Loc = ConsumeAnnotationToken(); 1895 DKind = parseOpenMPDirectiveKind(*this); 1896 } 1897 1898 switch (DKind) { 1899 case OMPD_threadprivate: { 1900 ConsumeToken(); 1901 DeclDirectiveListParserHelper Helper(this, DKind); 1902 if (!ParseOpenMPSimpleVarList(DKind, Helper, 1903 /*AllowScopeSpecifier=*/true)) { 1904 skipUntilPragmaOpenMPEnd(DKind); 1905 // Skip the last annot_pragma_openmp_end. 1906 ConsumeAnnotationToken(); 1907 return Actions.ActOnOpenMPThreadprivateDirective(Loc, 1908 Helper.getIdentifiers()); 1909 } 1910 break; 1911 } 1912 case OMPD_allocate: { 1913 ConsumeToken(); 1914 DeclDirectiveListParserHelper Helper(this, DKind); 1915 if (!ParseOpenMPSimpleVarList(DKind, Helper, 1916 /*AllowScopeSpecifier=*/true)) { 1917 SmallVector<OMPClause *, 1> Clauses; 1918 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 1919 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 1920 llvm::omp::Clause_enumSize + 1> 1921 FirstClauses(llvm::omp::Clause_enumSize + 1); 1922 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1923 OpenMPClauseKind CKind = 1924 Tok.isAnnotation() ? OMPC_unknown 1925 : getOpenMPClauseKind(PP.getSpelling(Tok)); 1926 Actions.StartOpenMPClause(CKind); 1927 OMPClause *Clause = ParseOpenMPClause( 1928 OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt()); 1929 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 1930 StopBeforeMatch); 1931 FirstClauses[unsigned(CKind)].setInt(true); 1932 if (Clause != nullptr) 1933 Clauses.push_back(Clause); 1934 if (Tok.is(tok::annot_pragma_openmp_end)) { 1935 Actions.EndOpenMPClause(); 1936 break; 1937 } 1938 // Skip ',' if any. 1939 if (Tok.is(tok::comma)) 1940 ConsumeToken(); 1941 Actions.EndOpenMPClause(); 1942 } 1943 skipUntilPragmaOpenMPEnd(DKind); 1944 } 1945 // Skip the last annot_pragma_openmp_end. 1946 ConsumeAnnotationToken(); 1947 return Actions.ActOnOpenMPAllocateDirective(Loc, Helper.getIdentifiers(), 1948 Clauses); 1949 } 1950 break; 1951 } 1952 case OMPD_requires: { 1953 SourceLocation StartLoc = ConsumeToken(); 1954 SmallVector<OMPClause *, 5> Clauses; 1955 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 1956 llvm::omp::Clause_enumSize + 1> 1957 FirstClauses(llvm::omp::Clause_enumSize + 1); 1958 if (Tok.is(tok::annot_pragma_openmp_end)) { 1959 Diag(Tok, diag::err_omp_expected_clause) 1960 << getOpenMPDirectiveName(OMPD_requires); 1961 break; 1962 } 1963 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 1964 OpenMPClauseKind CKind = Tok.isAnnotation() 1965 ? OMPC_unknown 1966 : getOpenMPClauseKind(PP.getSpelling(Tok)); 1967 Actions.StartOpenMPClause(CKind); 1968 OMPClause *Clause = ParseOpenMPClause( 1969 OMPD_requires, CKind, !FirstClauses[unsigned(CKind)].getInt()); 1970 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 1971 StopBeforeMatch); 1972 FirstClauses[unsigned(CKind)].setInt(true); 1973 if (Clause != nullptr) 1974 Clauses.push_back(Clause); 1975 if (Tok.is(tok::annot_pragma_openmp_end)) { 1976 Actions.EndOpenMPClause(); 1977 break; 1978 } 1979 // Skip ',' if any. 1980 if (Tok.is(tok::comma)) 1981 ConsumeToken(); 1982 Actions.EndOpenMPClause(); 1983 } 1984 // Consume final annot_pragma_openmp_end 1985 if (Clauses.empty()) { 1986 Diag(Tok, diag::err_omp_expected_clause) 1987 << getOpenMPDirectiveName(OMPD_requires); 1988 ConsumeAnnotationToken(); 1989 return nullptr; 1990 } 1991 ConsumeAnnotationToken(); 1992 return Actions.ActOnOpenMPRequiresDirective(StartLoc, Clauses); 1993 } 1994 case OMPD_assumes: 1995 case OMPD_begin_assumes: 1996 ParseOpenMPAssumesDirective(DKind, ConsumeToken()); 1997 break; 1998 case OMPD_end_assumes: 1999 ParseOpenMPEndAssumesDirective(ConsumeToken()); 2000 break; 2001 case OMPD_declare_reduction: 2002 ConsumeToken(); 2003 if (DeclGroupPtrTy Res = ParseOpenMPDeclareReductionDirective(AS)) { 2004 skipUntilPragmaOpenMPEnd(OMPD_declare_reduction); 2005 // Skip the last annot_pragma_openmp_end. 2006 ConsumeAnnotationToken(); 2007 return Res; 2008 } 2009 break; 2010 case OMPD_declare_mapper: { 2011 ConsumeToken(); 2012 if (DeclGroupPtrTy Res = ParseOpenMPDeclareMapperDirective(AS)) { 2013 // Skip the last annot_pragma_openmp_end. 2014 ConsumeAnnotationToken(); 2015 return Res; 2016 } 2017 break; 2018 } 2019 case OMPD_begin_declare_variant: { 2020 // The syntax is: 2021 // { #pragma omp begin declare variant clause } 2022 // <function-declaration-or-definition-sequence> 2023 // { #pragma omp end declare variant } 2024 // 2025 ConsumeToken(); 2026 OMPTraitInfo *ParentTI = Actions.getOMPTraitInfoForSurroundingScope(); 2027 ASTContext &ASTCtx = Actions.getASTContext(); 2028 OMPTraitInfo &TI = ASTCtx.getNewOMPTraitInfo(); 2029 if (parseOMPDeclareVariantMatchClause(Loc, TI, ParentTI)) 2030 break; 2031 2032 // Skip last tokens. 2033 skipUntilPragmaOpenMPEnd(OMPD_begin_declare_variant); 2034 2035 ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false); 2036 2037 VariantMatchInfo VMI; 2038 TI.getAsVariantMatchInfo(ASTCtx, VMI); 2039 2040 std::function<void(StringRef)> DiagUnknownTrait = [this, Loc]( 2041 StringRef ISATrait) { 2042 // TODO Track the selector locations in a way that is accessible here to 2043 // improve the diagnostic location. 2044 Diag(Loc, diag::warn_unknown_begin_declare_variant_isa_trait) << ISATrait; 2045 }; 2046 TargetOMPContext OMPCtx(ASTCtx, std::move(DiagUnknownTrait), 2047 /* CurrentFunctionDecl */ nullptr); 2048 2049 if (isVariantApplicableInContext(VMI, OMPCtx, /* DeviceSetOnly */ true)) { 2050 Actions.ActOnOpenMPBeginDeclareVariant(Loc, TI); 2051 break; 2052 } 2053 2054 // Elide all the code till the matching end declare variant was found. 2055 unsigned Nesting = 1; 2056 SourceLocation DKLoc; 2057 OpenMPDirectiveKind DK = OMPD_unknown; 2058 do { 2059 DKLoc = Tok.getLocation(); 2060 DK = parseOpenMPDirectiveKind(*this); 2061 if (DK == OMPD_end_declare_variant) 2062 --Nesting; 2063 else if (DK == OMPD_begin_declare_variant) 2064 ++Nesting; 2065 if (!Nesting || isEofOrEom()) 2066 break; 2067 ConsumeAnyToken(); 2068 } while (true); 2069 2070 parseOMPEndDirective(OMPD_begin_declare_variant, OMPD_end_declare_variant, 2071 DK, Loc, DKLoc, /* SkipUntilOpenMPEnd */ true); 2072 if (isEofOrEom()) 2073 return nullptr; 2074 break; 2075 } 2076 case OMPD_end_declare_variant: { 2077 if (Actions.isInOpenMPDeclareVariantScope()) 2078 Actions.ActOnOpenMPEndDeclareVariant(); 2079 else 2080 Diag(Loc, diag::err_expected_begin_declare_variant); 2081 ConsumeToken(); 2082 break; 2083 } 2084 case OMPD_declare_variant: 2085 case OMPD_declare_simd: { 2086 // The syntax is: 2087 // { #pragma omp declare {simd|variant} } 2088 // <function-declaration-or-definition> 2089 // 2090 CachedTokens Toks; 2091 Toks.push_back(Tok); 2092 ConsumeToken(); 2093 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2094 Toks.push_back(Tok); 2095 ConsumeAnyToken(); 2096 } 2097 Toks.push_back(Tok); 2098 ConsumeAnyToken(); 2099 2100 DeclGroupPtrTy Ptr; 2101 if (Tok.is(tok::annot_pragma_openmp)) { 2102 Ptr = ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs, Delayed, 2103 TagType, Tag); 2104 } else if (Tok.isNot(tok::r_brace) && !isEofOrEom()) { 2105 // Here we expect to see some function declaration. 2106 if (AS == AS_none) { 2107 assert(TagType == DeclSpec::TST_unspecified); 2108 MaybeParseCXX11Attributes(Attrs); 2109 ParsingDeclSpec PDS(*this); 2110 Ptr = ParseExternalDeclaration(Attrs, &PDS); 2111 } else { 2112 Ptr = 2113 ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag); 2114 } 2115 } 2116 if (!Ptr) { 2117 Diag(Loc, diag::err_omp_decl_in_declare_simd_variant) 2118 << (DKind == OMPD_declare_simd ? 0 : 1); 2119 return DeclGroupPtrTy(); 2120 } 2121 if (DKind == OMPD_declare_simd) 2122 return ParseOMPDeclareSimdClauses(Ptr, Toks, Loc); 2123 assert(DKind == OMPD_declare_variant && 2124 "Expected declare variant directive only"); 2125 ParseOMPDeclareVariantClauses(Ptr, Toks, Loc); 2126 return Ptr; 2127 } 2128 case OMPD_begin_declare_target: 2129 case OMPD_declare_target: { 2130 SourceLocation DTLoc = ConsumeAnyToken(); 2131 bool HasClauses = Tok.isNot(tok::annot_pragma_openmp_end); 2132 bool HasImplicitMappings = 2133 DKind == OMPD_begin_declare_target || !HasClauses; 2134 Sema::DeclareTargetContextInfo DTCI(DKind, DTLoc); 2135 if (HasClauses) 2136 ParseOMPDeclareTargetClauses(DTCI); 2137 2138 // Skip the last annot_pragma_openmp_end. 2139 ConsumeAnyToken(); 2140 2141 if (HasImplicitMappings) { 2142 Actions.ActOnStartOpenMPDeclareTargetContext(DTCI); 2143 return nullptr; 2144 } 2145 2146 Actions.ActOnFinishedOpenMPDeclareTargetContext(DTCI); 2147 llvm::SmallVector<Decl *, 4> Decls; 2148 for (auto &It : DTCI.ExplicitlyMapped) 2149 Decls.push_back(It.first); 2150 return Actions.BuildDeclaratorGroup(Decls); 2151 } 2152 case OMPD_end_declare_target: { 2153 if (!Actions.isInOpenMPDeclareTargetContext()) { 2154 Diag(Tok, diag::err_omp_unexpected_directive) 2155 << 1 << getOpenMPDirectiveName(DKind); 2156 break; 2157 } 2158 const Sema::DeclareTargetContextInfo &DTCI = 2159 Actions.ActOnOpenMPEndDeclareTargetDirective(); 2160 ParseOMPEndDeclareTargetDirective(DTCI.Kind, DKind, DTCI.Loc); 2161 return nullptr; 2162 } 2163 case OMPD_unknown: 2164 Diag(Tok, diag::err_omp_unknown_directive); 2165 break; 2166 case OMPD_parallel: 2167 case OMPD_simd: 2168 case OMPD_tile: 2169 case OMPD_task: 2170 case OMPD_taskyield: 2171 case OMPD_barrier: 2172 case OMPD_taskwait: 2173 case OMPD_taskgroup: 2174 case OMPD_flush: 2175 case OMPD_depobj: 2176 case OMPD_scan: 2177 case OMPD_for: 2178 case OMPD_for_simd: 2179 case OMPD_sections: 2180 case OMPD_section: 2181 case OMPD_single: 2182 case OMPD_master: 2183 case OMPD_ordered: 2184 case OMPD_critical: 2185 case OMPD_parallel_for: 2186 case OMPD_parallel_for_simd: 2187 case OMPD_parallel_sections: 2188 case OMPD_parallel_master: 2189 case OMPD_atomic: 2190 case OMPD_target: 2191 case OMPD_teams: 2192 case OMPD_cancellation_point: 2193 case OMPD_cancel: 2194 case OMPD_target_data: 2195 case OMPD_target_enter_data: 2196 case OMPD_target_exit_data: 2197 case OMPD_target_parallel: 2198 case OMPD_target_parallel_for: 2199 case OMPD_taskloop: 2200 case OMPD_taskloop_simd: 2201 case OMPD_master_taskloop: 2202 case OMPD_master_taskloop_simd: 2203 case OMPD_parallel_master_taskloop: 2204 case OMPD_parallel_master_taskloop_simd: 2205 case OMPD_distribute: 2206 case OMPD_target_update: 2207 case OMPD_distribute_parallel_for: 2208 case OMPD_distribute_parallel_for_simd: 2209 case OMPD_distribute_simd: 2210 case OMPD_target_parallel_for_simd: 2211 case OMPD_target_simd: 2212 case OMPD_teams_distribute: 2213 case OMPD_teams_distribute_simd: 2214 case OMPD_teams_distribute_parallel_for_simd: 2215 case OMPD_teams_distribute_parallel_for: 2216 case OMPD_target_teams: 2217 case OMPD_target_teams_distribute: 2218 case OMPD_target_teams_distribute_parallel_for: 2219 case OMPD_target_teams_distribute_parallel_for_simd: 2220 case OMPD_target_teams_distribute_simd: 2221 case OMPD_dispatch: 2222 case OMPD_masked: 2223 Diag(Tok, diag::err_omp_unexpected_directive) 2224 << 1 << getOpenMPDirectiveName(DKind); 2225 break; 2226 default: 2227 break; 2228 } 2229 while (Tok.isNot(tok::annot_pragma_openmp_end)) 2230 ConsumeAnyToken(); 2231 ConsumeAnyToken(); 2232 return nullptr; 2233 } 2234 2235 /// Parsing of declarative or executable OpenMP directives. 2236 /// 2237 /// threadprivate-directive: 2238 /// annot_pragma_openmp 'threadprivate' simple-variable-list 2239 /// annot_pragma_openmp_end 2240 /// 2241 /// allocate-directive: 2242 /// annot_pragma_openmp 'allocate' simple-variable-list 2243 /// annot_pragma_openmp_end 2244 /// 2245 /// declare-reduction-directive: 2246 /// annot_pragma_openmp 'declare' 'reduction' '(' <reduction_id> ':' 2247 /// <type> {',' <type>} ':' <expression> ')' ['initializer' '(' 2248 /// ('omp_priv' '=' <expression>|<function_call>) ')'] 2249 /// annot_pragma_openmp_end 2250 /// 2251 /// declare-mapper-directive: 2252 /// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':'] 2253 /// <type> <var> ')' [<clause>[[,] <clause>] ... ] 2254 /// annot_pragma_openmp_end 2255 /// 2256 /// executable-directive: 2257 /// annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' | 2258 /// 'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] | 2259 /// 'parallel for' | 'parallel sections' | 'parallel master' | 'task' | 2260 /// 'taskyield' | 'barrier' | 'taskwait' | 'flush' | 'ordered' | 2261 /// 'atomic' | 'for simd' | 'parallel for simd' | 'target' | 'target 2262 /// data' | 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' | 2263 /// 'master taskloop' | 'master taskloop simd' | 'parallel master 2264 /// taskloop' | 'parallel master taskloop simd' | 'distribute' | 'target 2265 /// enter data' | 'target exit data' | 'target parallel' | 'target 2266 /// parallel for' | 'target update' | 'distribute parallel for' | 2267 /// 'distribute paralle for simd' | 'distribute simd' | 'target parallel 2268 /// for simd' | 'target simd' | 'teams distribute' | 'teams distribute 2269 /// simd' | 'teams distribute parallel for simd' | 'teams distribute 2270 /// parallel for' | 'target teams' | 'target teams distribute' | 'target 2271 /// teams distribute parallel for' | 'target teams distribute parallel 2272 /// for simd' | 'target teams distribute simd' | 'masked' {clause} 2273 /// annot_pragma_openmp_end 2274 /// 2275 StmtResult 2276 Parser::ParseOpenMPDeclarativeOrExecutableDirective(ParsedStmtContext StmtCtx) { 2277 assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!"); 2278 ParsingOpenMPDirectiveRAII DirScope(*this); 2279 ParenBraceBracketBalancer BalancerRAIIObj(*this); 2280 SmallVector<OMPClause *, 5> Clauses; 2281 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 2282 llvm::omp::Clause_enumSize + 1> 2283 FirstClauses(llvm::omp::Clause_enumSize + 1); 2284 unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope | 2285 Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope; 2286 SourceLocation Loc = ConsumeAnnotationToken(), EndLoc; 2287 OpenMPDirectiveKind DKind = parseOpenMPDirectiveKind(*this); 2288 OpenMPDirectiveKind CancelRegion = OMPD_unknown; 2289 // Name of critical directive. 2290 DeclarationNameInfo DirName; 2291 StmtResult Directive = StmtError(); 2292 bool HasAssociatedStatement = true; 2293 2294 switch (DKind) { 2295 case OMPD_threadprivate: { 2296 // FIXME: Should this be permitted in C++? 2297 if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) == 2298 ParsedStmtContext()) { 2299 Diag(Tok, diag::err_omp_immediate_directive) 2300 << getOpenMPDirectiveName(DKind) << 0; 2301 } 2302 ConsumeToken(); 2303 DeclDirectiveListParserHelper Helper(this, DKind); 2304 if (!ParseOpenMPSimpleVarList(DKind, Helper, 2305 /*AllowScopeSpecifier=*/false)) { 2306 skipUntilPragmaOpenMPEnd(DKind); 2307 DeclGroupPtrTy Res = Actions.ActOnOpenMPThreadprivateDirective( 2308 Loc, Helper.getIdentifiers()); 2309 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2310 } 2311 SkipUntil(tok::annot_pragma_openmp_end); 2312 break; 2313 } 2314 case OMPD_allocate: { 2315 // FIXME: Should this be permitted in C++? 2316 if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) == 2317 ParsedStmtContext()) { 2318 Diag(Tok, diag::err_omp_immediate_directive) 2319 << getOpenMPDirectiveName(DKind) << 0; 2320 } 2321 ConsumeToken(); 2322 DeclDirectiveListParserHelper Helper(this, DKind); 2323 if (!ParseOpenMPSimpleVarList(DKind, Helper, 2324 /*AllowScopeSpecifier=*/false)) { 2325 SmallVector<OMPClause *, 1> Clauses; 2326 if (Tok.isNot(tok::annot_pragma_openmp_end)) { 2327 SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, 2328 llvm::omp::Clause_enumSize + 1> 2329 FirstClauses(llvm::omp::Clause_enumSize + 1); 2330 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2331 OpenMPClauseKind CKind = 2332 Tok.isAnnotation() ? OMPC_unknown 2333 : getOpenMPClauseKind(PP.getSpelling(Tok)); 2334 Actions.StartOpenMPClause(CKind); 2335 OMPClause *Clause = ParseOpenMPClause( 2336 OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt()); 2337 SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, 2338 StopBeforeMatch); 2339 FirstClauses[unsigned(CKind)].setInt(true); 2340 if (Clause != nullptr) 2341 Clauses.push_back(Clause); 2342 if (Tok.is(tok::annot_pragma_openmp_end)) { 2343 Actions.EndOpenMPClause(); 2344 break; 2345 } 2346 // Skip ',' if any. 2347 if (Tok.is(tok::comma)) 2348 ConsumeToken(); 2349 Actions.EndOpenMPClause(); 2350 } 2351 skipUntilPragmaOpenMPEnd(DKind); 2352 } 2353 DeclGroupPtrTy Res = Actions.ActOnOpenMPAllocateDirective( 2354 Loc, Helper.getIdentifiers(), Clauses); 2355 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2356 } 2357 SkipUntil(tok::annot_pragma_openmp_end); 2358 break; 2359 } 2360 case OMPD_declare_reduction: 2361 ConsumeToken(); 2362 if (DeclGroupPtrTy Res = 2363 ParseOpenMPDeclareReductionDirective(/*AS=*/AS_none)) { 2364 skipUntilPragmaOpenMPEnd(OMPD_declare_reduction); 2365 ConsumeAnyToken(); 2366 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2367 } else { 2368 SkipUntil(tok::annot_pragma_openmp_end); 2369 } 2370 break; 2371 case OMPD_declare_mapper: { 2372 ConsumeToken(); 2373 if (DeclGroupPtrTy Res = 2374 ParseOpenMPDeclareMapperDirective(/*AS=*/AS_none)) { 2375 // Skip the last annot_pragma_openmp_end. 2376 ConsumeAnnotationToken(); 2377 Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation()); 2378 } else { 2379 SkipUntil(tok::annot_pragma_openmp_end); 2380 } 2381 break; 2382 } 2383 case OMPD_flush: 2384 case OMPD_depobj: 2385 case OMPD_scan: 2386 case OMPD_taskyield: 2387 case OMPD_barrier: 2388 case OMPD_taskwait: 2389 case OMPD_cancellation_point: 2390 case OMPD_cancel: 2391 case OMPD_target_enter_data: 2392 case OMPD_target_exit_data: 2393 case OMPD_target_update: 2394 case OMPD_interop: 2395 if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) == 2396 ParsedStmtContext()) { 2397 Diag(Tok, diag::err_omp_immediate_directive) 2398 << getOpenMPDirectiveName(DKind) << 0; 2399 } 2400 HasAssociatedStatement = false; 2401 // Fall through for further analysis. 2402 LLVM_FALLTHROUGH; 2403 case OMPD_parallel: 2404 case OMPD_simd: 2405 case OMPD_tile: 2406 case OMPD_for: 2407 case OMPD_for_simd: 2408 case OMPD_sections: 2409 case OMPD_single: 2410 case OMPD_section: 2411 case OMPD_master: 2412 case OMPD_critical: 2413 case OMPD_parallel_for: 2414 case OMPD_parallel_for_simd: 2415 case OMPD_parallel_sections: 2416 case OMPD_parallel_master: 2417 case OMPD_task: 2418 case OMPD_ordered: 2419 case OMPD_atomic: 2420 case OMPD_target: 2421 case OMPD_teams: 2422 case OMPD_taskgroup: 2423 case OMPD_target_data: 2424 case OMPD_target_parallel: 2425 case OMPD_target_parallel_for: 2426 case OMPD_taskloop: 2427 case OMPD_taskloop_simd: 2428 case OMPD_master_taskloop: 2429 case OMPD_master_taskloop_simd: 2430 case OMPD_parallel_master_taskloop: 2431 case OMPD_parallel_master_taskloop_simd: 2432 case OMPD_distribute: 2433 case OMPD_distribute_parallel_for: 2434 case OMPD_distribute_parallel_for_simd: 2435 case OMPD_distribute_simd: 2436 case OMPD_target_parallel_for_simd: 2437 case OMPD_target_simd: 2438 case OMPD_teams_distribute: 2439 case OMPD_teams_distribute_simd: 2440 case OMPD_teams_distribute_parallel_for_simd: 2441 case OMPD_teams_distribute_parallel_for: 2442 case OMPD_target_teams: 2443 case OMPD_target_teams_distribute: 2444 case OMPD_target_teams_distribute_parallel_for: 2445 case OMPD_target_teams_distribute_parallel_for_simd: 2446 case OMPD_target_teams_distribute_simd: 2447 case OMPD_dispatch: 2448 case OMPD_masked: { 2449 // Special processing for flush and depobj clauses. 2450 Token ImplicitTok; 2451 bool ImplicitClauseAllowed = false; 2452 if (DKind == OMPD_flush || DKind == OMPD_depobj) { 2453 ImplicitTok = Tok; 2454 ImplicitClauseAllowed = true; 2455 } 2456 ConsumeToken(); 2457 // Parse directive name of the 'critical' directive if any. 2458 if (DKind == OMPD_critical) { 2459 BalancedDelimiterTracker T(*this, tok::l_paren, 2460 tok::annot_pragma_openmp_end); 2461 if (!T.consumeOpen()) { 2462 if (Tok.isAnyIdentifier()) { 2463 DirName = 2464 DeclarationNameInfo(Tok.getIdentifierInfo(), Tok.getLocation()); 2465 ConsumeAnyToken(); 2466 } else { 2467 Diag(Tok, diag::err_omp_expected_identifier_for_critical); 2468 } 2469 T.consumeClose(); 2470 } 2471 } else if (DKind == OMPD_cancellation_point || DKind == OMPD_cancel) { 2472 CancelRegion = parseOpenMPDirectiveKind(*this); 2473 if (Tok.isNot(tok::annot_pragma_openmp_end)) 2474 ConsumeToken(); 2475 } 2476 2477 if (isOpenMPLoopDirective(DKind)) 2478 ScopeFlags |= Scope::OpenMPLoopDirectiveScope; 2479 if (isOpenMPSimdDirective(DKind)) 2480 ScopeFlags |= Scope::OpenMPSimdDirectiveScope; 2481 ParseScope OMPDirectiveScope(this, ScopeFlags); 2482 Actions.StartOpenMPDSABlock(DKind, DirName, Actions.getCurScope(), Loc); 2483 2484 while (Tok.isNot(tok::annot_pragma_openmp_end)) { 2485 bool HasImplicitClause = false; 2486 if (ImplicitClauseAllowed && Tok.is(tok::l_paren)) { 2487 HasImplicitClause = true; 2488 // Push copy of the current token back to stream to properly parse 2489 // pseudo-clause OMPFlushClause or OMPDepobjClause. 2490 PP.EnterToken(Tok, /*IsReinject*/ true); 2491 PP.EnterToken(ImplicitTok, /*IsReinject*/ true); 2492 ConsumeAnyToken(); 2493 } 2494 OpenMPClauseKind CKind = Tok.isAnnotation() 2495 ? OMPC_unknown 2496 : getOpenMPClauseKind(PP.getSpelling(Tok)); 2497 if (HasImplicitClause) { 2498 assert(CKind == OMPC_unknown && "Must be unknown implicit clause."); 2499 if (DKind == OMPD_flush) { 2500 CKind = OMPC_flush; 2501 } else { 2502 assert(DKind == OMPD_depobj && 2503 "Expected flush or depobj directives."); 2504 CKind = OMPC_depobj; 2505 } 2506 } 2507 // No more implicit clauses allowed. 2508 ImplicitClauseAllowed = false; 2509 Actions.StartOpenMPClause(CKind); 2510 HasImplicitClause = false; 2511 OMPClause *Clause = ParseOpenMPClause( 2512 DKind, CKind, !FirstClauses[unsigned(CKind)].getInt()); 2513 FirstClauses[unsigned(CKind)].setInt(true); 2514 if (Clause) { 2515 FirstClauses[unsigned(CKind)].setPointer(Clause); 2516 Clauses.push_back(Clause); 2517 } 2518 2519 // Skip ',' if any. 2520 if (Tok.is(tok::comma)) 2521 ConsumeToken(); 2522 Actions.EndOpenMPClause(); 2523 } 2524 // End location of the directive. 2525 EndLoc = Tok.getLocation(); 2526 // Consume final annot_pragma_openmp_end. 2527 ConsumeAnnotationToken(); 2528 2529 // OpenMP [2.13.8, ordered Construct, Syntax] 2530 // If the depend clause is specified, the ordered construct is a stand-alone 2531 // directive. 2532 if (DKind == OMPD_ordered && FirstClauses[unsigned(OMPC_depend)].getInt()) { 2533 if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) == 2534 ParsedStmtContext()) { 2535 Diag(Loc, diag::err_omp_immediate_directive) 2536 << getOpenMPDirectiveName(DKind) << 1 2537 << getOpenMPClauseName(OMPC_depend); 2538 } 2539 HasAssociatedStatement = false; 2540 } 2541 2542 if (DKind == OMPD_tile && !FirstClauses[unsigned(OMPC_sizes)].getInt()) { 2543 Diag(Loc, diag::err_omp_required_clause) 2544 << getOpenMPDirectiveName(OMPD_tile) << "sizes"; 2545 } 2546 2547 StmtResult AssociatedStmt; 2548 if (HasAssociatedStatement) { 2549 // The body is a block scope like in Lambdas and Blocks. 2550 Actions.ActOnOpenMPRegionStart(DKind, getCurScope()); 2551 // FIXME: We create a bogus CompoundStmt scope to hold the contents of 2552 // the captured region. Code elsewhere assumes that any FunctionScopeInfo 2553 // should have at least one compound statement scope within it. 2554 ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false); 2555 { 2556 Sema::CompoundScopeRAII Scope(Actions); 2557 AssociatedStmt = ParseStatement(); 2558 2559 if (AssociatedStmt.isUsable() && isOpenMPLoopDirective(DKind) && 2560 getLangOpts().OpenMPIRBuilder) 2561 AssociatedStmt = 2562 Actions.ActOnOpenMPCanonicalLoop(AssociatedStmt.get()); 2563 } 2564 AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses); 2565 } else if (DKind == OMPD_target_update || DKind == OMPD_target_enter_data || 2566 DKind == OMPD_target_exit_data) { 2567 Actions.ActOnOpenMPRegionStart(DKind, getCurScope()); 2568 AssociatedStmt = (Sema::CompoundScopeRAII(Actions), 2569 Actions.ActOnCompoundStmt(Loc, Loc, llvm::None, 2570 /*isStmtExpr=*/false)); 2571 AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses); 2572 } 2573 Directive = Actions.ActOnOpenMPExecutableDirective( 2574 DKind, DirName, CancelRegion, Clauses, AssociatedStmt.get(), Loc, 2575 EndLoc); 2576 2577 // Exit scope. 2578 Actions.EndOpenMPDSABlock(Directive.get()); 2579 OMPDirectiveScope.Exit(); 2580 break; 2581 } 2582 case OMPD_declare_simd: 2583 case OMPD_declare_target: 2584 case OMPD_begin_declare_target: 2585 case OMPD_end_declare_target: 2586 case OMPD_requires: 2587 case OMPD_begin_declare_variant: 2588 case OMPD_end_declare_variant: 2589 case OMPD_declare_variant: 2590 Diag(Tok, diag::err_omp_unexpected_directive) 2591 << 1 << getOpenMPDirectiveName(DKind); 2592 SkipUntil(tok::annot_pragma_openmp_end); 2593 break; 2594 case OMPD_unknown: 2595 default: 2596 Diag(Tok, diag::err_omp_unknown_directive); 2597 SkipUntil(tok::annot_pragma_openmp_end); 2598 break; 2599 } 2600 return Directive; 2601 } 2602 2603 // Parses simple list: 2604 // simple-variable-list: 2605 // '(' id-expression {, id-expression} ')' 2606 // 2607 bool Parser::ParseOpenMPSimpleVarList( 2608 OpenMPDirectiveKind Kind, 2609 const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)> 2610 &Callback, 2611 bool AllowScopeSpecifier) { 2612 // Parse '('. 2613 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2614 if (T.expectAndConsume(diag::err_expected_lparen_after, 2615 getOpenMPDirectiveName(Kind).data())) 2616 return true; 2617 bool IsCorrect = true; 2618 bool NoIdentIsFound = true; 2619 2620 // Read tokens while ')' or annot_pragma_openmp_end is not found. 2621 while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) { 2622 CXXScopeSpec SS; 2623 UnqualifiedId Name; 2624 // Read var name. 2625 Token PrevTok = Tok; 2626 NoIdentIsFound = false; 2627 2628 if (AllowScopeSpecifier && getLangOpts().CPlusPlus && 2629 ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr, 2630 /*ObjectHadErrors=*/false, false)) { 2631 IsCorrect = false; 2632 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2633 StopBeforeMatch); 2634 } else if (ParseUnqualifiedId(SS, /*ObjectType=*/nullptr, 2635 /*ObjectHadErrors=*/false, false, false, 2636 false, false, nullptr, Name)) { 2637 IsCorrect = false; 2638 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2639 StopBeforeMatch); 2640 } else if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren) && 2641 Tok.isNot(tok::annot_pragma_openmp_end)) { 2642 IsCorrect = false; 2643 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2644 StopBeforeMatch); 2645 Diag(PrevTok.getLocation(), diag::err_expected) 2646 << tok::identifier 2647 << SourceRange(PrevTok.getLocation(), PrevTokLocation); 2648 } else { 2649 Callback(SS, Actions.GetNameFromUnqualifiedId(Name)); 2650 } 2651 // Consume ','. 2652 if (Tok.is(tok::comma)) { 2653 ConsumeToken(); 2654 } 2655 } 2656 2657 if (NoIdentIsFound) { 2658 Diag(Tok, diag::err_expected) << tok::identifier; 2659 IsCorrect = false; 2660 } 2661 2662 // Parse ')'. 2663 IsCorrect = !T.consumeClose() && IsCorrect; 2664 2665 return !IsCorrect; 2666 } 2667 2668 OMPClause *Parser::ParseOpenMPSizesClause() { 2669 SourceLocation ClauseNameLoc = ConsumeToken(); 2670 SmallVector<Expr *, 4> ValExprs; 2671 2672 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2673 if (T.consumeOpen()) { 2674 Diag(Tok, diag::err_expected) << tok::l_paren; 2675 return nullptr; 2676 } 2677 2678 while (true) { 2679 ExprResult Val = ParseConstantExpression(); 2680 if (!Val.isUsable()) { 2681 T.skipToEnd(); 2682 return nullptr; 2683 } 2684 2685 ValExprs.push_back(Val.get()); 2686 2687 if (Tok.is(tok::r_paren) || Tok.is(tok::annot_pragma_openmp_end)) 2688 break; 2689 2690 ExpectAndConsume(tok::comma); 2691 } 2692 2693 T.consumeClose(); 2694 2695 return Actions.ActOnOpenMPSizesClause( 2696 ValExprs, ClauseNameLoc, T.getOpenLocation(), T.getCloseLocation()); 2697 } 2698 2699 OMPClause *Parser::ParseOpenMPUsesAllocatorClause(OpenMPDirectiveKind DKind) { 2700 SourceLocation Loc = Tok.getLocation(); 2701 ConsumeAnyToken(); 2702 2703 // Parse '('. 2704 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2705 if (T.expectAndConsume(diag::err_expected_lparen_after, "uses_allocator")) 2706 return nullptr; 2707 SmallVector<Sema::UsesAllocatorsData, 4> Data; 2708 do { 2709 ExprResult Allocator = ParseCXXIdExpression(); 2710 if (Allocator.isInvalid()) { 2711 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2712 StopBeforeMatch); 2713 break; 2714 } 2715 Sema::UsesAllocatorsData &D = Data.emplace_back(); 2716 D.Allocator = Allocator.get(); 2717 if (Tok.is(tok::l_paren)) { 2718 BalancedDelimiterTracker T(*this, tok::l_paren, 2719 tok::annot_pragma_openmp_end); 2720 T.consumeOpen(); 2721 ExprResult AllocatorTraits = ParseCXXIdExpression(); 2722 T.consumeClose(); 2723 if (AllocatorTraits.isInvalid()) { 2724 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 2725 StopBeforeMatch); 2726 break; 2727 } 2728 D.AllocatorTraits = AllocatorTraits.get(); 2729 D.LParenLoc = T.getOpenLocation(); 2730 D.RParenLoc = T.getCloseLocation(); 2731 } 2732 if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren)) 2733 Diag(Tok, diag::err_omp_expected_punc) << "uses_allocators" << 0; 2734 // Parse ',' 2735 if (Tok.is(tok::comma)) 2736 ConsumeAnyToken(); 2737 } while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)); 2738 T.consumeClose(); 2739 return Actions.ActOnOpenMPUsesAllocatorClause(Loc, T.getOpenLocation(), 2740 T.getCloseLocation(), Data); 2741 } 2742 2743 /// Parsing of OpenMP clauses. 2744 /// 2745 /// clause: 2746 /// if-clause | final-clause | num_threads-clause | safelen-clause | 2747 /// default-clause | private-clause | firstprivate-clause | shared-clause 2748 /// | linear-clause | aligned-clause | collapse-clause | 2749 /// lastprivate-clause | reduction-clause | proc_bind-clause | 2750 /// schedule-clause | copyin-clause | copyprivate-clause | untied-clause | 2751 /// mergeable-clause | flush-clause | read-clause | write-clause | 2752 /// update-clause | capture-clause | seq_cst-clause | device-clause | 2753 /// simdlen-clause | threads-clause | simd-clause | num_teams-clause | 2754 /// thread_limit-clause | priority-clause | grainsize-clause | 2755 /// nogroup-clause | num_tasks-clause | hint-clause | to-clause | 2756 /// from-clause | is_device_ptr-clause | task_reduction-clause | 2757 /// in_reduction-clause | allocator-clause | allocate-clause | 2758 /// acq_rel-clause | acquire-clause | release-clause | relaxed-clause | 2759 /// depobj-clause | destroy-clause | detach-clause | inclusive-clause | 2760 /// exclusive-clause | uses_allocators-clause | use_device_addr-clause 2761 /// 2762 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind, 2763 OpenMPClauseKind CKind, bool FirstClause) { 2764 OMPClauseKind = CKind; 2765 OMPClause *Clause = nullptr; 2766 bool ErrorFound = false; 2767 bool WrongDirective = false; 2768 // Check if clause is allowed for the given directive. 2769 if (CKind != OMPC_unknown && 2770 !isAllowedClauseForDirective(DKind, CKind, getLangOpts().OpenMP)) { 2771 Diag(Tok, diag::err_omp_unexpected_clause) 2772 << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind); 2773 ErrorFound = true; 2774 WrongDirective = true; 2775 } 2776 2777 switch (CKind) { 2778 case OMPC_final: 2779 case OMPC_num_threads: 2780 case OMPC_safelen: 2781 case OMPC_simdlen: 2782 case OMPC_collapse: 2783 case OMPC_ordered: 2784 case OMPC_num_teams: 2785 case OMPC_thread_limit: 2786 case OMPC_priority: 2787 case OMPC_grainsize: 2788 case OMPC_num_tasks: 2789 case OMPC_hint: 2790 case OMPC_allocator: 2791 case OMPC_depobj: 2792 case OMPC_detach: 2793 case OMPC_novariants: 2794 case OMPC_nocontext: 2795 case OMPC_filter: 2796 // OpenMP [2.5, Restrictions] 2797 // At most one num_threads clause can appear on the directive. 2798 // OpenMP [2.8.1, simd construct, Restrictions] 2799 // Only one safelen clause can appear on a simd directive. 2800 // Only one simdlen clause can appear on a simd directive. 2801 // Only one collapse clause can appear on a simd directive. 2802 // OpenMP [2.11.1, task Construct, Restrictions] 2803 // At most one if clause can appear on the directive. 2804 // At most one final clause can appear on the directive. 2805 // OpenMP [teams Construct, Restrictions] 2806 // At most one num_teams clause can appear on the directive. 2807 // At most one thread_limit clause can appear on the directive. 2808 // OpenMP [2.9.1, task Construct, Restrictions] 2809 // At most one priority clause can appear on the directive. 2810 // OpenMP [2.9.2, taskloop Construct, Restrictions] 2811 // At most one grainsize clause can appear on the directive. 2812 // OpenMP [2.9.2, taskloop Construct, Restrictions] 2813 // At most one num_tasks clause can appear on the directive. 2814 // OpenMP [2.11.3, allocate Directive, Restrictions] 2815 // At most one allocator clause can appear on the directive. 2816 // OpenMP 5.0, 2.10.1 task Construct, Restrictions. 2817 // At most one detach clause can appear on the directive. 2818 // OpenMP 5.1, 2.3.6 dispatch Construct, Restrictions. 2819 // At most one novariants clause can appear on a dispatch directive. 2820 // At most one nocontext clause can appear on a dispatch directive. 2821 if (!FirstClause) { 2822 Diag(Tok, diag::err_omp_more_one_clause) 2823 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2824 ErrorFound = true; 2825 } 2826 2827 if (CKind == OMPC_ordered && PP.LookAhead(/*N=*/0).isNot(tok::l_paren)) 2828 Clause = ParseOpenMPClause(CKind, WrongDirective); 2829 else 2830 Clause = ParseOpenMPSingleExprClause(CKind, WrongDirective); 2831 break; 2832 case OMPC_default: 2833 case OMPC_proc_bind: 2834 case OMPC_atomic_default_mem_order: 2835 case OMPC_order: 2836 // OpenMP [2.14.3.1, Restrictions] 2837 // Only a single default clause may be specified on a parallel, task or 2838 // teams directive. 2839 // OpenMP [2.5, parallel Construct, Restrictions] 2840 // At most one proc_bind clause can appear on the directive. 2841 // OpenMP [5.0, Requires directive, Restrictions] 2842 // At most one atomic_default_mem_order clause can appear 2843 // on the directive 2844 if (!FirstClause && CKind != OMPC_order) { 2845 Diag(Tok, diag::err_omp_more_one_clause) 2846 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2847 ErrorFound = true; 2848 } 2849 2850 Clause = ParseOpenMPSimpleClause(CKind, WrongDirective); 2851 break; 2852 case OMPC_device: 2853 case OMPC_schedule: 2854 case OMPC_dist_schedule: 2855 case OMPC_defaultmap: 2856 // OpenMP [2.7.1, Restrictions, p. 3] 2857 // Only one schedule clause can appear on a loop directive. 2858 // OpenMP 4.5 [2.10.4, Restrictions, p. 106] 2859 // At most one defaultmap clause can appear on the directive. 2860 // OpenMP 5.0 [2.12.5, target construct, Restrictions] 2861 // At most one device clause can appear on the directive. 2862 if ((getLangOpts().OpenMP < 50 || CKind != OMPC_defaultmap) && 2863 !FirstClause) { 2864 Diag(Tok, diag::err_omp_more_one_clause) 2865 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2866 ErrorFound = true; 2867 } 2868 LLVM_FALLTHROUGH; 2869 case OMPC_if: 2870 Clause = ParseOpenMPSingleExprWithArgClause(DKind, CKind, WrongDirective); 2871 break; 2872 case OMPC_nowait: 2873 case OMPC_untied: 2874 case OMPC_mergeable: 2875 case OMPC_read: 2876 case OMPC_write: 2877 case OMPC_capture: 2878 case OMPC_seq_cst: 2879 case OMPC_acq_rel: 2880 case OMPC_acquire: 2881 case OMPC_release: 2882 case OMPC_relaxed: 2883 case OMPC_threads: 2884 case OMPC_simd: 2885 case OMPC_nogroup: 2886 case OMPC_unified_address: 2887 case OMPC_unified_shared_memory: 2888 case OMPC_reverse_offload: 2889 case OMPC_dynamic_allocators: 2890 // OpenMP [2.7.1, Restrictions, p. 9] 2891 // Only one ordered clause can appear on a loop directive. 2892 // OpenMP [2.7.1, Restrictions, C/C++, p. 4] 2893 // Only one nowait clause can appear on a for directive. 2894 // OpenMP [5.0, Requires directive, Restrictions] 2895 // Each of the requires clauses can appear at most once on the directive. 2896 if (!FirstClause) { 2897 Diag(Tok, diag::err_omp_more_one_clause) 2898 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2899 ErrorFound = true; 2900 } 2901 2902 Clause = ParseOpenMPClause(CKind, WrongDirective); 2903 break; 2904 case OMPC_update: 2905 if (!FirstClause) { 2906 Diag(Tok, diag::err_omp_more_one_clause) 2907 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2908 ErrorFound = true; 2909 } 2910 2911 Clause = (DKind == OMPD_depobj) 2912 ? ParseOpenMPSimpleClause(CKind, WrongDirective) 2913 : ParseOpenMPClause(CKind, WrongDirective); 2914 break; 2915 case OMPC_private: 2916 case OMPC_firstprivate: 2917 case OMPC_lastprivate: 2918 case OMPC_shared: 2919 case OMPC_reduction: 2920 case OMPC_task_reduction: 2921 case OMPC_in_reduction: 2922 case OMPC_linear: 2923 case OMPC_aligned: 2924 case OMPC_copyin: 2925 case OMPC_copyprivate: 2926 case OMPC_flush: 2927 case OMPC_depend: 2928 case OMPC_map: 2929 case OMPC_to: 2930 case OMPC_from: 2931 case OMPC_use_device_ptr: 2932 case OMPC_use_device_addr: 2933 case OMPC_is_device_ptr: 2934 case OMPC_allocate: 2935 case OMPC_nontemporal: 2936 case OMPC_inclusive: 2937 case OMPC_exclusive: 2938 case OMPC_affinity: 2939 Clause = ParseOpenMPVarListClause(DKind, CKind, WrongDirective); 2940 break; 2941 case OMPC_sizes: 2942 if (!FirstClause) { 2943 Diag(Tok, diag::err_omp_more_one_clause) 2944 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2945 ErrorFound = true; 2946 } 2947 2948 Clause = ParseOpenMPSizesClause(); 2949 break; 2950 case OMPC_uses_allocators: 2951 Clause = ParseOpenMPUsesAllocatorClause(DKind); 2952 break; 2953 case OMPC_destroy: 2954 if (DKind != OMPD_interop) { 2955 if (!FirstClause) { 2956 Diag(Tok, diag::err_omp_more_one_clause) 2957 << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0; 2958 ErrorFound = true; 2959 } 2960 Clause = ParseOpenMPClause(CKind, WrongDirective); 2961 break; 2962 } 2963 LLVM_FALLTHROUGH; 2964 case OMPC_init: 2965 case OMPC_use: 2966 Clause = ParseOpenMPInteropClause(CKind, WrongDirective); 2967 break; 2968 case OMPC_device_type: 2969 case OMPC_unknown: 2970 skipUntilPragmaOpenMPEnd(DKind); 2971 break; 2972 case OMPC_threadprivate: 2973 case OMPC_uniform: 2974 case OMPC_match: 2975 if (!WrongDirective) 2976 Diag(Tok, diag::err_omp_unexpected_clause) 2977 << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind); 2978 SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch); 2979 break; 2980 default: 2981 break; 2982 } 2983 return ErrorFound ? nullptr : Clause; 2984 } 2985 2986 /// Parses simple expression in parens for single-expression clauses of OpenMP 2987 /// constructs. 2988 /// \param RLoc Returned location of right paren. 2989 ExprResult Parser::ParseOpenMPParensExpr(StringRef ClauseName, 2990 SourceLocation &RLoc, 2991 bool IsAddressOfOperand) { 2992 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 2993 if (T.expectAndConsume(diag::err_expected_lparen_after, ClauseName.data())) 2994 return ExprError(); 2995 2996 SourceLocation ELoc = Tok.getLocation(); 2997 ExprResult LHS( 2998 ParseCastExpression(AnyCastExpr, IsAddressOfOperand, NotTypeCast)); 2999 ExprResult Val(ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3000 Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false); 3001 3002 // Parse ')'. 3003 RLoc = Tok.getLocation(); 3004 if (!T.consumeClose()) 3005 RLoc = T.getCloseLocation(); 3006 3007 return Val; 3008 } 3009 3010 /// Parsing of OpenMP clauses with single expressions like 'final', 3011 /// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams', 3012 /// 'thread_limit', 'simdlen', 'priority', 'grainsize', 'num_tasks', 'hint' or 3013 /// 'detach'. 3014 /// 3015 /// final-clause: 3016 /// 'final' '(' expression ')' 3017 /// 3018 /// num_threads-clause: 3019 /// 'num_threads' '(' expression ')' 3020 /// 3021 /// safelen-clause: 3022 /// 'safelen' '(' expression ')' 3023 /// 3024 /// simdlen-clause: 3025 /// 'simdlen' '(' expression ')' 3026 /// 3027 /// collapse-clause: 3028 /// 'collapse' '(' expression ')' 3029 /// 3030 /// priority-clause: 3031 /// 'priority' '(' expression ')' 3032 /// 3033 /// grainsize-clause: 3034 /// 'grainsize' '(' expression ')' 3035 /// 3036 /// num_tasks-clause: 3037 /// 'num_tasks' '(' expression ')' 3038 /// 3039 /// hint-clause: 3040 /// 'hint' '(' expression ')' 3041 /// 3042 /// allocator-clause: 3043 /// 'allocator' '(' expression ')' 3044 /// 3045 /// detach-clause: 3046 /// 'detach' '(' event-handler-expression ')' 3047 /// 3048 OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind, 3049 bool ParseOnly) { 3050 SourceLocation Loc = ConsumeToken(); 3051 SourceLocation LLoc = Tok.getLocation(); 3052 SourceLocation RLoc; 3053 3054 ExprResult Val = ParseOpenMPParensExpr(getOpenMPClauseName(Kind), RLoc); 3055 3056 if (Val.isInvalid()) 3057 return nullptr; 3058 3059 if (ParseOnly) 3060 return nullptr; 3061 return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc); 3062 } 3063 3064 /// Parsing of OpenMP clauses that use an interop-var. 3065 /// 3066 /// init-clause: 3067 /// init([interop-modifier, ]interop-type[[, interop-type] ... ]:interop-var) 3068 /// 3069 /// destroy-clause: 3070 /// destroy(interop-var) 3071 /// 3072 /// use-clause: 3073 /// use(interop-var) 3074 /// 3075 /// interop-modifier: 3076 /// prefer_type(preference-list) 3077 /// 3078 /// preference-list: 3079 /// foreign-runtime-id [, foreign-runtime-id]... 3080 /// 3081 /// foreign-runtime-id: 3082 /// <string-literal> | <constant-integral-expression> 3083 /// 3084 /// interop-type: 3085 /// target | targetsync 3086 /// 3087 OMPClause *Parser::ParseOpenMPInteropClause(OpenMPClauseKind Kind, 3088 bool ParseOnly) { 3089 SourceLocation Loc = ConsumeToken(); 3090 // Parse '('. 3091 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3092 if (T.expectAndConsume(diag::err_expected_lparen_after, 3093 getOpenMPClauseName(Kind).data())) 3094 return nullptr; 3095 3096 bool IsTarget = false; 3097 bool IsTargetSync = false; 3098 SmallVector<Expr *, 4> Prefs; 3099 3100 if (Kind == OMPC_init) { 3101 3102 // Parse optional interop-modifier. 3103 if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "prefer_type") { 3104 ConsumeToken(); 3105 BalancedDelimiterTracker PT(*this, tok::l_paren, 3106 tok::annot_pragma_openmp_end); 3107 if (PT.expectAndConsume(diag::err_expected_lparen_after, "prefer_type")) 3108 return nullptr; 3109 3110 while (Tok.isNot(tok::r_paren)) { 3111 SourceLocation Loc = Tok.getLocation(); 3112 ExprResult LHS = ParseCastExpression(AnyCastExpr); 3113 ExprResult PTExpr = Actions.CorrectDelayedTyposInExpr( 3114 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3115 PTExpr = Actions.ActOnFinishFullExpr(PTExpr.get(), Loc, 3116 /*DiscardedValue=*/false); 3117 if (PTExpr.isUsable()) 3118 Prefs.push_back(PTExpr.get()); 3119 else 3120 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3121 StopBeforeMatch); 3122 3123 if (Tok.is(tok::comma)) 3124 ConsumeToken(); 3125 } 3126 PT.consumeClose(); 3127 } 3128 3129 if (!Prefs.empty()) { 3130 if (Tok.is(tok::comma)) 3131 ConsumeToken(); 3132 else 3133 Diag(Tok, diag::err_omp_expected_punc_after_interop_mod); 3134 } 3135 3136 // Parse the interop-types. 3137 bool HasError = false; 3138 while (Tok.is(tok::identifier)) { 3139 if (PP.getSpelling(Tok) == "target") { 3140 // OpenMP 5.1 [2.15.1, interop Construct, Restrictions] 3141 // Each interop-type may be specified on an action-clause at most 3142 // once. 3143 if (IsTarget) 3144 Diag(Tok, diag::warn_omp_more_one_interop_type) << "target"; 3145 IsTarget = true; 3146 } else if (PP.getSpelling(Tok) == "targetsync") { 3147 if (IsTargetSync) 3148 Diag(Tok, diag::warn_omp_more_one_interop_type) << "targetsync"; 3149 IsTargetSync = true; 3150 } else { 3151 HasError = true; 3152 Diag(Tok, diag::err_omp_expected_interop_type); 3153 } 3154 ConsumeToken(); 3155 3156 if (!Tok.is(tok::comma)) 3157 break; 3158 ConsumeToken(); 3159 } 3160 if (!HasError && !IsTarget && !IsTargetSync) 3161 Diag(Tok, diag::err_omp_expected_interop_type); 3162 3163 if (Tok.is(tok::colon)) 3164 ConsumeToken(); 3165 else if (IsTarget || IsTargetSync) 3166 Diag(Tok, diag::warn_pragma_expected_colon) << "interop types"; 3167 } 3168 3169 // Parse the variable. 3170 SourceLocation VarLoc = Tok.getLocation(); 3171 ExprResult InteropVarExpr = 3172 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()); 3173 if (!InteropVarExpr.isUsable()) { 3174 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3175 StopBeforeMatch); 3176 } 3177 3178 // Parse ')'. 3179 SourceLocation RLoc = Tok.getLocation(); 3180 if (!T.consumeClose()) 3181 RLoc = T.getCloseLocation(); 3182 3183 if (ParseOnly || !InteropVarExpr.isUsable() || 3184 (Kind == OMPC_init && !IsTarget && !IsTargetSync)) 3185 return nullptr; 3186 3187 if (Kind == OMPC_init) 3188 return Actions.ActOnOpenMPInitClause(InteropVarExpr.get(), Prefs, IsTarget, 3189 IsTargetSync, Loc, T.getOpenLocation(), 3190 VarLoc, RLoc); 3191 if (Kind == OMPC_use) 3192 return Actions.ActOnOpenMPUseClause(InteropVarExpr.get(), Loc, 3193 T.getOpenLocation(), VarLoc, RLoc); 3194 3195 if (Kind == OMPC_destroy) 3196 return Actions.ActOnOpenMPDestroyClause(InteropVarExpr.get(), Loc, 3197 T.getOpenLocation(), VarLoc, RLoc); 3198 3199 llvm_unreachable("Unexpected interop variable clause."); 3200 } 3201 3202 /// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'. 3203 /// 3204 /// default-clause: 3205 /// 'default' '(' 'none' | 'shared' | 'firstprivate' ')' 3206 /// 3207 /// proc_bind-clause: 3208 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ')' 3209 /// 3210 /// update-clause: 3211 /// 'update' '(' 'in' | 'out' | 'inout' | 'mutexinoutset' ')' 3212 /// 3213 OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind, 3214 bool ParseOnly) { 3215 llvm::Optional<SimpleClauseData> Val = parseOpenMPSimpleClause(*this, Kind); 3216 if (!Val || ParseOnly) 3217 return nullptr; 3218 if (getLangOpts().OpenMP < 51 && Kind == OMPC_default && 3219 static_cast<DefaultKind>(Val.getValue().Type) == 3220 OMP_DEFAULT_firstprivate) { 3221 Diag(Val.getValue().LOpen, diag::err_omp_invalid_dsa) 3222 << getOpenMPClauseName(OMPC_firstprivate) 3223 << getOpenMPClauseName(OMPC_default) << "5.1"; 3224 return nullptr; 3225 } 3226 return Actions.ActOnOpenMPSimpleClause( 3227 Kind, Val.getValue().Type, Val.getValue().TypeLoc, Val.getValue().LOpen, 3228 Val.getValue().Loc, Val.getValue().RLoc); 3229 } 3230 3231 /// Parsing of OpenMP clauses like 'ordered'. 3232 /// 3233 /// ordered-clause: 3234 /// 'ordered' 3235 /// 3236 /// nowait-clause: 3237 /// 'nowait' 3238 /// 3239 /// untied-clause: 3240 /// 'untied' 3241 /// 3242 /// mergeable-clause: 3243 /// 'mergeable' 3244 /// 3245 /// read-clause: 3246 /// 'read' 3247 /// 3248 /// threads-clause: 3249 /// 'threads' 3250 /// 3251 /// simd-clause: 3252 /// 'simd' 3253 /// 3254 /// nogroup-clause: 3255 /// 'nogroup' 3256 /// 3257 OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly) { 3258 SourceLocation Loc = Tok.getLocation(); 3259 ConsumeAnyToken(); 3260 3261 if (ParseOnly) 3262 return nullptr; 3263 return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation()); 3264 } 3265 3266 /// Parsing of OpenMP clauses with single expressions and some additional 3267 /// argument like 'schedule' or 'dist_schedule'. 3268 /// 3269 /// schedule-clause: 3270 /// 'schedule' '(' [ modifier [ ',' modifier ] ':' ] kind [',' expression ] 3271 /// ')' 3272 /// 3273 /// if-clause: 3274 /// 'if' '(' [ directive-name-modifier ':' ] expression ')' 3275 /// 3276 /// defaultmap: 3277 /// 'defaultmap' '(' modifier [ ':' kind ] ')' 3278 /// 3279 /// device-clause: 3280 /// 'device' '(' [ device-modifier ':' ] expression ')' 3281 /// 3282 OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPDirectiveKind DKind, 3283 OpenMPClauseKind Kind, 3284 bool ParseOnly) { 3285 SourceLocation Loc = ConsumeToken(); 3286 SourceLocation DelimLoc; 3287 // Parse '('. 3288 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3289 if (T.expectAndConsume(diag::err_expected_lparen_after, 3290 getOpenMPClauseName(Kind).data())) 3291 return nullptr; 3292 3293 ExprResult Val; 3294 SmallVector<unsigned, 4> Arg; 3295 SmallVector<SourceLocation, 4> KLoc; 3296 if (Kind == OMPC_schedule) { 3297 enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements }; 3298 Arg.resize(NumberOfElements); 3299 KLoc.resize(NumberOfElements); 3300 Arg[Modifier1] = OMPC_SCHEDULE_MODIFIER_unknown; 3301 Arg[Modifier2] = OMPC_SCHEDULE_MODIFIER_unknown; 3302 Arg[ScheduleKind] = OMPC_SCHEDULE_unknown; 3303 unsigned KindModifier = getOpenMPSimpleClauseType( 3304 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3305 getLangOpts().OpenMP); 3306 if (KindModifier > OMPC_SCHEDULE_unknown) { 3307 // Parse 'modifier' 3308 Arg[Modifier1] = KindModifier; 3309 KLoc[Modifier1] = Tok.getLocation(); 3310 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3311 Tok.isNot(tok::annot_pragma_openmp_end)) 3312 ConsumeAnyToken(); 3313 if (Tok.is(tok::comma)) { 3314 // Parse ',' 'modifier' 3315 ConsumeAnyToken(); 3316 KindModifier = getOpenMPSimpleClauseType( 3317 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3318 getLangOpts().OpenMP); 3319 Arg[Modifier2] = KindModifier > OMPC_SCHEDULE_unknown 3320 ? KindModifier 3321 : (unsigned)OMPC_SCHEDULE_unknown; 3322 KLoc[Modifier2] = Tok.getLocation(); 3323 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3324 Tok.isNot(tok::annot_pragma_openmp_end)) 3325 ConsumeAnyToken(); 3326 } 3327 // Parse ':' 3328 if (Tok.is(tok::colon)) 3329 ConsumeAnyToken(); 3330 else 3331 Diag(Tok, diag::warn_pragma_expected_colon) << "schedule modifier"; 3332 KindModifier = getOpenMPSimpleClauseType( 3333 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3334 getLangOpts().OpenMP); 3335 } 3336 Arg[ScheduleKind] = KindModifier; 3337 KLoc[ScheduleKind] = Tok.getLocation(); 3338 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3339 Tok.isNot(tok::annot_pragma_openmp_end)) 3340 ConsumeAnyToken(); 3341 if ((Arg[ScheduleKind] == OMPC_SCHEDULE_static || 3342 Arg[ScheduleKind] == OMPC_SCHEDULE_dynamic || 3343 Arg[ScheduleKind] == OMPC_SCHEDULE_guided) && 3344 Tok.is(tok::comma)) 3345 DelimLoc = ConsumeAnyToken(); 3346 } else if (Kind == OMPC_dist_schedule) { 3347 Arg.push_back(getOpenMPSimpleClauseType( 3348 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3349 getLangOpts().OpenMP)); 3350 KLoc.push_back(Tok.getLocation()); 3351 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3352 Tok.isNot(tok::annot_pragma_openmp_end)) 3353 ConsumeAnyToken(); 3354 if (Arg.back() == OMPC_DIST_SCHEDULE_static && Tok.is(tok::comma)) 3355 DelimLoc = ConsumeAnyToken(); 3356 } else if (Kind == OMPC_defaultmap) { 3357 // Get a defaultmap modifier 3358 unsigned Modifier = getOpenMPSimpleClauseType( 3359 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3360 getLangOpts().OpenMP); 3361 // Set defaultmap modifier to unknown if it is either scalar, aggregate, or 3362 // pointer 3363 if (Modifier < OMPC_DEFAULTMAP_MODIFIER_unknown) 3364 Modifier = OMPC_DEFAULTMAP_MODIFIER_unknown; 3365 Arg.push_back(Modifier); 3366 KLoc.push_back(Tok.getLocation()); 3367 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3368 Tok.isNot(tok::annot_pragma_openmp_end)) 3369 ConsumeAnyToken(); 3370 // Parse ':' 3371 if (Tok.is(tok::colon) || getLangOpts().OpenMP < 50) { 3372 if (Tok.is(tok::colon)) 3373 ConsumeAnyToken(); 3374 else if (Arg.back() != OMPC_DEFAULTMAP_MODIFIER_unknown) 3375 Diag(Tok, diag::warn_pragma_expected_colon) << "defaultmap modifier"; 3376 // Get a defaultmap kind 3377 Arg.push_back(getOpenMPSimpleClauseType( 3378 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3379 getLangOpts().OpenMP)); 3380 KLoc.push_back(Tok.getLocation()); 3381 if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) && 3382 Tok.isNot(tok::annot_pragma_openmp_end)) 3383 ConsumeAnyToken(); 3384 } else { 3385 Arg.push_back(OMPC_DEFAULTMAP_unknown); 3386 KLoc.push_back(SourceLocation()); 3387 } 3388 } else if (Kind == OMPC_device) { 3389 // Only target executable directives support extended device construct. 3390 if (isOpenMPTargetExecutionDirective(DKind) && getLangOpts().OpenMP >= 50 && 3391 NextToken().is(tok::colon)) { 3392 // Parse optional <device modifier> ':' 3393 Arg.push_back(getOpenMPSimpleClauseType( 3394 Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), 3395 getLangOpts().OpenMP)); 3396 KLoc.push_back(Tok.getLocation()); 3397 ConsumeAnyToken(); 3398 // Parse ':' 3399 ConsumeAnyToken(); 3400 } else { 3401 Arg.push_back(OMPC_DEVICE_unknown); 3402 KLoc.emplace_back(); 3403 } 3404 } else { 3405 assert(Kind == OMPC_if); 3406 KLoc.push_back(Tok.getLocation()); 3407 TentativeParsingAction TPA(*this); 3408 auto DK = parseOpenMPDirectiveKind(*this); 3409 Arg.push_back(DK); 3410 if (DK != OMPD_unknown) { 3411 ConsumeToken(); 3412 if (Tok.is(tok::colon) && getLangOpts().OpenMP > 40) { 3413 TPA.Commit(); 3414 DelimLoc = ConsumeToken(); 3415 } else { 3416 TPA.Revert(); 3417 Arg.back() = unsigned(OMPD_unknown); 3418 } 3419 } else { 3420 TPA.Revert(); 3421 } 3422 } 3423 3424 bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) || 3425 (Kind == OMPC_dist_schedule && DelimLoc.isValid()) || 3426 Kind == OMPC_if || Kind == OMPC_device; 3427 if (NeedAnExpression) { 3428 SourceLocation ELoc = Tok.getLocation(); 3429 ExprResult LHS(ParseCastExpression(AnyCastExpr, false, NotTypeCast)); 3430 Val = ParseRHSOfBinaryExpression(LHS, prec::Conditional); 3431 Val = 3432 Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false); 3433 } 3434 3435 // Parse ')'. 3436 SourceLocation RLoc = Tok.getLocation(); 3437 if (!T.consumeClose()) 3438 RLoc = T.getCloseLocation(); 3439 3440 if (NeedAnExpression && Val.isInvalid()) 3441 return nullptr; 3442 3443 if (ParseOnly) 3444 return nullptr; 3445 return Actions.ActOnOpenMPSingleExprWithArgClause( 3446 Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc, RLoc); 3447 } 3448 3449 static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec, 3450 UnqualifiedId &ReductionId) { 3451 if (ReductionIdScopeSpec.isEmpty()) { 3452 auto OOK = OO_None; 3453 switch (P.getCurToken().getKind()) { 3454 case tok::plus: 3455 OOK = OO_Plus; 3456 break; 3457 case tok::minus: 3458 OOK = OO_Minus; 3459 break; 3460 case tok::star: 3461 OOK = OO_Star; 3462 break; 3463 case tok::amp: 3464 OOK = OO_Amp; 3465 break; 3466 case tok::pipe: 3467 OOK = OO_Pipe; 3468 break; 3469 case tok::caret: 3470 OOK = OO_Caret; 3471 break; 3472 case tok::ampamp: 3473 OOK = OO_AmpAmp; 3474 break; 3475 case tok::pipepipe: 3476 OOK = OO_PipePipe; 3477 break; 3478 default: 3479 break; 3480 } 3481 if (OOK != OO_None) { 3482 SourceLocation OpLoc = P.ConsumeToken(); 3483 SourceLocation SymbolLocations[] = {OpLoc, OpLoc, SourceLocation()}; 3484 ReductionId.setOperatorFunctionId(OpLoc, OOK, SymbolLocations); 3485 return false; 3486 } 3487 } 3488 return P.ParseUnqualifiedId( 3489 ReductionIdScopeSpec, /*ObjectType=*/nullptr, 3490 /*ObjectHadErrors=*/false, /*EnteringContext*/ false, 3491 /*AllowDestructorName*/ false, 3492 /*AllowConstructorName*/ false, 3493 /*AllowDeductionGuide*/ false, nullptr, ReductionId); 3494 } 3495 3496 /// Checks if the token is a valid map-type-modifier. 3497 /// FIXME: It will return an OpenMPMapClauseKind if that's what it parses. 3498 static OpenMPMapModifierKind isMapModifier(Parser &P) { 3499 Token Tok = P.getCurToken(); 3500 if (!Tok.is(tok::identifier)) 3501 return OMPC_MAP_MODIFIER_unknown; 3502 3503 Preprocessor &PP = P.getPreprocessor(); 3504 OpenMPMapModifierKind TypeModifier = 3505 static_cast<OpenMPMapModifierKind>(getOpenMPSimpleClauseType( 3506 OMPC_map, PP.getSpelling(Tok), P.getLangOpts().OpenMP)); 3507 return TypeModifier; 3508 } 3509 3510 /// Parse the mapper modifier in map, to, and from clauses. 3511 bool Parser::parseMapperModifier(OpenMPVarListDataTy &Data) { 3512 // Parse '('. 3513 BalancedDelimiterTracker T(*this, tok::l_paren, tok::colon); 3514 if (T.expectAndConsume(diag::err_expected_lparen_after, "mapper")) { 3515 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3516 StopBeforeMatch); 3517 return true; 3518 } 3519 // Parse mapper-identifier 3520 if (getLangOpts().CPlusPlus) 3521 ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec, 3522 /*ObjectType=*/nullptr, 3523 /*ObjectHadErrors=*/false, 3524 /*EnteringContext=*/false); 3525 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) { 3526 Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier); 3527 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3528 StopBeforeMatch); 3529 return true; 3530 } 3531 auto &DeclNames = Actions.getASTContext().DeclarationNames; 3532 Data.ReductionOrMapperId = DeclarationNameInfo( 3533 DeclNames.getIdentifier(Tok.getIdentifierInfo()), Tok.getLocation()); 3534 ConsumeToken(); 3535 // Parse ')'. 3536 return T.consumeClose(); 3537 } 3538 3539 /// Parse map-type-modifiers in map clause. 3540 /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) 3541 /// where, map-type-modifier ::= always | close | mapper(mapper-identifier) | 3542 /// present 3543 bool Parser::parseMapTypeModifiers(OpenMPVarListDataTy &Data) { 3544 while (getCurToken().isNot(tok::colon)) { 3545 OpenMPMapModifierKind TypeModifier = isMapModifier(*this); 3546 if (TypeModifier == OMPC_MAP_MODIFIER_always || 3547 TypeModifier == OMPC_MAP_MODIFIER_close || 3548 TypeModifier == OMPC_MAP_MODIFIER_present) { 3549 Data.MapTypeModifiers.push_back(TypeModifier); 3550 Data.MapTypeModifiersLoc.push_back(Tok.getLocation()); 3551 ConsumeToken(); 3552 } else if (TypeModifier == OMPC_MAP_MODIFIER_mapper) { 3553 Data.MapTypeModifiers.push_back(TypeModifier); 3554 Data.MapTypeModifiersLoc.push_back(Tok.getLocation()); 3555 ConsumeToken(); 3556 if (parseMapperModifier(Data)) 3557 return true; 3558 } else { 3559 // For the case of unknown map-type-modifier or a map-type. 3560 // Map-type is followed by a colon; the function returns when it 3561 // encounters a token followed by a colon. 3562 if (Tok.is(tok::comma)) { 3563 Diag(Tok, diag::err_omp_map_type_modifier_missing); 3564 ConsumeToken(); 3565 continue; 3566 } 3567 // Potential map-type token as it is followed by a colon. 3568 if (PP.LookAhead(0).is(tok::colon)) 3569 return false; 3570 Diag(Tok, diag::err_omp_unknown_map_type_modifier) 3571 << (getLangOpts().OpenMP >= 51 ? 1 : 0); 3572 ConsumeToken(); 3573 } 3574 if (getCurToken().is(tok::comma)) 3575 ConsumeToken(); 3576 } 3577 return false; 3578 } 3579 3580 /// Checks if the token is a valid map-type. 3581 /// FIXME: It will return an OpenMPMapModifierKind if that's what it parses. 3582 static OpenMPMapClauseKind isMapType(Parser &P) { 3583 Token Tok = P.getCurToken(); 3584 // The map-type token can be either an identifier or the C++ delete keyword. 3585 if (!Tok.isOneOf(tok::identifier, tok::kw_delete)) 3586 return OMPC_MAP_unknown; 3587 Preprocessor &PP = P.getPreprocessor(); 3588 OpenMPMapClauseKind MapType = 3589 static_cast<OpenMPMapClauseKind>(getOpenMPSimpleClauseType( 3590 OMPC_map, PP.getSpelling(Tok), P.getLangOpts().OpenMP)); 3591 return MapType; 3592 } 3593 3594 /// Parse map-type in map clause. 3595 /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) 3596 /// where, map-type ::= to | from | tofrom | alloc | release | delete 3597 static void parseMapType(Parser &P, Parser::OpenMPVarListDataTy &Data) { 3598 Token Tok = P.getCurToken(); 3599 if (Tok.is(tok::colon)) { 3600 P.Diag(Tok, diag::err_omp_map_type_missing); 3601 return; 3602 } 3603 Data.ExtraModifier = isMapType(P); 3604 if (Data.ExtraModifier == OMPC_MAP_unknown) 3605 P.Diag(Tok, diag::err_omp_unknown_map_type); 3606 P.ConsumeToken(); 3607 } 3608 3609 /// Parses simple expression in parens for single-expression clauses of OpenMP 3610 /// constructs. 3611 ExprResult Parser::ParseOpenMPIteratorsExpr() { 3612 assert(Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator" && 3613 "Expected 'iterator' token."); 3614 SourceLocation IteratorKwLoc = ConsumeToken(); 3615 3616 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3617 if (T.expectAndConsume(diag::err_expected_lparen_after, "iterator")) 3618 return ExprError(); 3619 3620 SourceLocation LLoc = T.getOpenLocation(); 3621 SmallVector<Sema::OMPIteratorData, 4> Data; 3622 while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) { 3623 // Check if the type parsing is required. 3624 ParsedType IteratorType; 3625 if (Tok.isNot(tok::identifier) || NextToken().isNot(tok::equal)) { 3626 // identifier '=' is not found - parse type. 3627 TypeResult TR = ParseTypeName(); 3628 if (TR.isInvalid()) { 3629 T.skipToEnd(); 3630 return ExprError(); 3631 } 3632 IteratorType = TR.get(); 3633 } 3634 3635 // Parse identifier. 3636 IdentifierInfo *II = nullptr; 3637 SourceLocation IdLoc; 3638 if (Tok.is(tok::identifier)) { 3639 II = Tok.getIdentifierInfo(); 3640 IdLoc = ConsumeToken(); 3641 } else { 3642 Diag(Tok, diag::err_expected_unqualified_id) << 0; 3643 } 3644 3645 // Parse '='. 3646 SourceLocation AssignLoc; 3647 if (Tok.is(tok::equal)) 3648 AssignLoc = ConsumeToken(); 3649 else 3650 Diag(Tok, diag::err_omp_expected_equal_in_iterator); 3651 3652 // Parse range-specification - <begin> ':' <end> [ ':' <step> ] 3653 ColonProtectionRAIIObject ColonRAII(*this); 3654 // Parse <begin> 3655 SourceLocation Loc = Tok.getLocation(); 3656 ExprResult LHS = ParseCastExpression(AnyCastExpr); 3657 ExprResult Begin = Actions.CorrectDelayedTyposInExpr( 3658 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3659 Begin = Actions.ActOnFinishFullExpr(Begin.get(), Loc, 3660 /*DiscardedValue=*/false); 3661 // Parse ':'. 3662 SourceLocation ColonLoc; 3663 if (Tok.is(tok::colon)) 3664 ColonLoc = ConsumeToken(); 3665 3666 // Parse <end> 3667 Loc = Tok.getLocation(); 3668 LHS = ParseCastExpression(AnyCastExpr); 3669 ExprResult End = Actions.CorrectDelayedTyposInExpr( 3670 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3671 End = Actions.ActOnFinishFullExpr(End.get(), Loc, 3672 /*DiscardedValue=*/false); 3673 3674 SourceLocation SecColonLoc; 3675 ExprResult Step; 3676 // Parse optional step. 3677 if (Tok.is(tok::colon)) { 3678 // Parse ':' 3679 SecColonLoc = ConsumeToken(); 3680 // Parse <step> 3681 Loc = Tok.getLocation(); 3682 LHS = ParseCastExpression(AnyCastExpr); 3683 Step = Actions.CorrectDelayedTyposInExpr( 3684 ParseRHSOfBinaryExpression(LHS, prec::Conditional)); 3685 Step = Actions.ActOnFinishFullExpr(Step.get(), Loc, 3686 /*DiscardedValue=*/false); 3687 } 3688 3689 // Parse ',' or ')' 3690 if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren)) 3691 Diag(Tok, diag::err_omp_expected_punc_after_iterator); 3692 if (Tok.is(tok::comma)) 3693 ConsumeToken(); 3694 3695 Sema::OMPIteratorData &D = Data.emplace_back(); 3696 D.DeclIdent = II; 3697 D.DeclIdentLoc = IdLoc; 3698 D.Type = IteratorType; 3699 D.AssignLoc = AssignLoc; 3700 D.ColonLoc = ColonLoc; 3701 D.SecColonLoc = SecColonLoc; 3702 D.Range.Begin = Begin.get(); 3703 D.Range.End = End.get(); 3704 D.Range.Step = Step.get(); 3705 } 3706 3707 // Parse ')'. 3708 SourceLocation RLoc = Tok.getLocation(); 3709 if (!T.consumeClose()) 3710 RLoc = T.getCloseLocation(); 3711 3712 return Actions.ActOnOMPIteratorExpr(getCurScope(), IteratorKwLoc, LLoc, RLoc, 3713 Data); 3714 } 3715 3716 /// Parses clauses with list. 3717 bool Parser::ParseOpenMPVarList(OpenMPDirectiveKind DKind, 3718 OpenMPClauseKind Kind, 3719 SmallVectorImpl<Expr *> &Vars, 3720 OpenMPVarListDataTy &Data) { 3721 UnqualifiedId UnqualifiedReductionId; 3722 bool InvalidReductionId = false; 3723 bool IsInvalidMapperModifier = false; 3724 3725 // Parse '('. 3726 BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end); 3727 if (T.expectAndConsume(diag::err_expected_lparen_after, 3728 getOpenMPClauseName(Kind).data())) 3729 return true; 3730 3731 bool HasIterator = false; 3732 bool NeedRParenForLinear = false; 3733 BalancedDelimiterTracker LinearT(*this, tok::l_paren, 3734 tok::annot_pragma_openmp_end); 3735 // Handle reduction-identifier for reduction clause. 3736 if (Kind == OMPC_reduction || Kind == OMPC_task_reduction || 3737 Kind == OMPC_in_reduction) { 3738 Data.ExtraModifier = OMPC_REDUCTION_unknown; 3739 if (Kind == OMPC_reduction && getLangOpts().OpenMP >= 50 && 3740 (Tok.is(tok::identifier) || Tok.is(tok::kw_default)) && 3741 NextToken().is(tok::comma)) { 3742 // Parse optional reduction modifier. 3743 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3744 getLangOpts().OpenMP); 3745 Data.ExtraModifierLoc = Tok.getLocation(); 3746 ConsumeToken(); 3747 assert(Tok.is(tok::comma) && "Expected comma."); 3748 (void)ConsumeToken(); 3749 } 3750 ColonProtectionRAIIObject ColonRAII(*this); 3751 if (getLangOpts().CPlusPlus) 3752 ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec, 3753 /*ObjectType=*/nullptr, 3754 /*ObjectHadErrors=*/false, 3755 /*EnteringContext=*/false); 3756 InvalidReductionId = ParseReductionId( 3757 *this, Data.ReductionOrMapperIdScopeSpec, UnqualifiedReductionId); 3758 if (InvalidReductionId) { 3759 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3760 StopBeforeMatch); 3761 } 3762 if (Tok.is(tok::colon)) 3763 Data.ColonLoc = ConsumeToken(); 3764 else 3765 Diag(Tok, diag::warn_pragma_expected_colon) << "reduction identifier"; 3766 if (!InvalidReductionId) 3767 Data.ReductionOrMapperId = 3768 Actions.GetNameFromUnqualifiedId(UnqualifiedReductionId); 3769 } else if (Kind == OMPC_depend) { 3770 if (getLangOpts().OpenMP >= 50) { 3771 if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator") { 3772 // Handle optional dependence modifier. 3773 // iterator(iterators-definition) 3774 // where iterators-definition is iterator-specifier [, 3775 // iterators-definition ] 3776 // where iterator-specifier is [ iterator-type ] identifier = 3777 // range-specification 3778 HasIterator = true; 3779 EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope); 3780 ExprResult IteratorRes = ParseOpenMPIteratorsExpr(); 3781 Data.DepModOrTailExpr = IteratorRes.get(); 3782 // Parse ',' 3783 ExpectAndConsume(tok::comma); 3784 } 3785 } 3786 // Handle dependency type for depend clause. 3787 ColonProtectionRAIIObject ColonRAII(*this); 3788 Data.ExtraModifier = getOpenMPSimpleClauseType( 3789 Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : "", 3790 getLangOpts().OpenMP); 3791 Data.ExtraModifierLoc = Tok.getLocation(); 3792 if (Data.ExtraModifier == OMPC_DEPEND_unknown) { 3793 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3794 StopBeforeMatch); 3795 } else { 3796 ConsumeToken(); 3797 // Special processing for depend(source) clause. 3798 if (DKind == OMPD_ordered && Data.ExtraModifier == OMPC_DEPEND_source) { 3799 // Parse ')'. 3800 T.consumeClose(); 3801 return false; 3802 } 3803 } 3804 if (Tok.is(tok::colon)) { 3805 Data.ColonLoc = ConsumeToken(); 3806 } else { 3807 Diag(Tok, DKind == OMPD_ordered ? diag::warn_pragma_expected_colon_r_paren 3808 : diag::warn_pragma_expected_colon) 3809 << "dependency type"; 3810 } 3811 } else if (Kind == OMPC_linear) { 3812 // Try to parse modifier if any. 3813 Data.ExtraModifier = OMPC_LINEAR_val; 3814 if (Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::l_paren)) { 3815 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3816 getLangOpts().OpenMP); 3817 Data.ExtraModifierLoc = ConsumeToken(); 3818 LinearT.consumeOpen(); 3819 NeedRParenForLinear = true; 3820 } 3821 } else if (Kind == OMPC_lastprivate) { 3822 // Try to parse modifier if any. 3823 Data.ExtraModifier = OMPC_LASTPRIVATE_unknown; 3824 // Conditional modifier allowed only in OpenMP 5.0 and not supported in 3825 // distribute and taskloop based directives. 3826 if ((getLangOpts().OpenMP >= 50 && !isOpenMPDistributeDirective(DKind) && 3827 !isOpenMPTaskLoopDirective(DKind)) && 3828 Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::colon)) { 3829 Data.ExtraModifier = getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), 3830 getLangOpts().OpenMP); 3831 Data.ExtraModifierLoc = Tok.getLocation(); 3832 ConsumeToken(); 3833 assert(Tok.is(tok::colon) && "Expected colon."); 3834 Data.ColonLoc = ConsumeToken(); 3835 } 3836 } else if (Kind == OMPC_map) { 3837 // Handle map type for map clause. 3838 ColonProtectionRAIIObject ColonRAII(*this); 3839 3840 // The first identifier may be a list item, a map-type or a 3841 // map-type-modifier. The map-type can also be delete which has the same 3842 // spelling of the C++ delete keyword. 3843 Data.ExtraModifier = OMPC_MAP_unknown; 3844 Data.ExtraModifierLoc = Tok.getLocation(); 3845 3846 // Check for presence of a colon in the map clause. 3847 TentativeParsingAction TPA(*this); 3848 bool ColonPresent = false; 3849 if (SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3850 StopBeforeMatch)) { 3851 if (Tok.is(tok::colon)) 3852 ColonPresent = true; 3853 } 3854 TPA.Revert(); 3855 // Only parse map-type-modifier[s] and map-type if a colon is present in 3856 // the map clause. 3857 if (ColonPresent) { 3858 IsInvalidMapperModifier = parseMapTypeModifiers(Data); 3859 if (!IsInvalidMapperModifier) 3860 parseMapType(*this, Data); 3861 else 3862 SkipUntil(tok::colon, tok::annot_pragma_openmp_end, StopBeforeMatch); 3863 } 3864 if (Data.ExtraModifier == OMPC_MAP_unknown) { 3865 Data.ExtraModifier = OMPC_MAP_tofrom; 3866 Data.IsMapTypeImplicit = true; 3867 } 3868 3869 if (Tok.is(tok::colon)) 3870 Data.ColonLoc = ConsumeToken(); 3871 } else if (Kind == OMPC_to || Kind == OMPC_from) { 3872 while (Tok.is(tok::identifier)) { 3873 auto Modifier = 3874 static_cast<OpenMPMotionModifierKind>(getOpenMPSimpleClauseType( 3875 Kind, PP.getSpelling(Tok), getLangOpts().OpenMP)); 3876 if (Modifier == OMPC_MOTION_MODIFIER_unknown) 3877 break; 3878 Data.MotionModifiers.push_back(Modifier); 3879 Data.MotionModifiersLoc.push_back(Tok.getLocation()); 3880 ConsumeToken(); 3881 if (Modifier == OMPC_MOTION_MODIFIER_mapper) { 3882 IsInvalidMapperModifier = parseMapperModifier(Data); 3883 if (IsInvalidMapperModifier) 3884 break; 3885 } 3886 // OpenMP < 5.1 doesn't permit a ',' or additional modifiers. 3887 if (getLangOpts().OpenMP < 51) 3888 break; 3889 // OpenMP 5.1 accepts an optional ',' even if the next character is ':'. 3890 // TODO: Is that intentional? 3891 if (Tok.is(tok::comma)) 3892 ConsumeToken(); 3893 } 3894 if (!Data.MotionModifiers.empty() && Tok.isNot(tok::colon)) { 3895 if (!IsInvalidMapperModifier) { 3896 if (getLangOpts().OpenMP < 51) 3897 Diag(Tok, diag::warn_pragma_expected_colon) << ")"; 3898 else 3899 Diag(Tok, diag::warn_pragma_expected_colon) << "motion modifier"; 3900 } 3901 SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end, 3902 StopBeforeMatch); 3903 } 3904 // OpenMP 5.1 permits a ':' even without a preceding modifier. TODO: Is 3905 // that intentional? 3906 if ((!Data.MotionModifiers.empty() || getLangOpts().OpenMP >= 51) && 3907 Tok.is(tok::colon)) 3908 Data.ColonLoc = ConsumeToken(); 3909 } else if (Kind == OMPC_allocate || 3910 (Kind == OMPC_affinity && Tok.is(tok::identifier) && 3911 PP.getSpelling(Tok) == "iterator")) { 3912 // Handle optional allocator expression followed by colon delimiter. 3913 ColonProtectionRAIIObject ColonRAII(*this); 3914 TentativeParsingAction TPA(*this); 3915 // OpenMP 5.0, 2.10.1, task Construct. 3916 // where aff-modifier is one of the following: 3917 // iterator(iterators-definition) 3918 ExprResult Tail; 3919 if (Kind == OMPC_allocate) { 3920 Tail = ParseAssignmentExpression(); 3921 } else { 3922 HasIterator = true; 3923 EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope); 3924 Tail = ParseOpenMPIteratorsExpr(); 3925 } 3926 Tail = Actions.CorrectDelayedTyposInExpr(Tail); 3927 Tail = Actions.ActOnFinishFullExpr(Tail.get(), T.getOpenLocation(), 3928 /*DiscardedValue=*/false); 3929 if (Tail.isUsable()) { 3930 if (Tok.is(tok::colon)) { 3931 Data.DepModOrTailExpr = Tail.get(); 3932 Data.ColonLoc = ConsumeToken(); 3933 TPA.Commit(); 3934 } else { 3935 // Colon not found, parse only list of variables. 3936 TPA.Revert(); 3937 } 3938 } else { 3939 // Parsing was unsuccessfull, revert and skip to the end of clause or 3940 // directive. 3941 TPA.Revert(); 3942 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3943 StopBeforeMatch); 3944 } 3945 } 3946 3947 bool IsComma = 3948 (Kind != OMPC_reduction && Kind != OMPC_task_reduction && 3949 Kind != OMPC_in_reduction && Kind != OMPC_depend && Kind != OMPC_map) || 3950 (Kind == OMPC_reduction && !InvalidReductionId) || 3951 (Kind == OMPC_map && Data.ExtraModifier != OMPC_MAP_unknown) || 3952 (Kind == OMPC_depend && Data.ExtraModifier != OMPC_DEPEND_unknown); 3953 const bool MayHaveTail = (Kind == OMPC_linear || Kind == OMPC_aligned); 3954 while (IsComma || (Tok.isNot(tok::r_paren) && Tok.isNot(tok::colon) && 3955 Tok.isNot(tok::annot_pragma_openmp_end))) { 3956 ParseScope OMPListScope(this, Scope::OpenMPDirectiveScope); 3957 ColonProtectionRAIIObject ColonRAII(*this, MayHaveTail); 3958 // Parse variable 3959 ExprResult VarExpr = 3960 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()); 3961 if (VarExpr.isUsable()) { 3962 Vars.push_back(VarExpr.get()); 3963 } else { 3964 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3965 StopBeforeMatch); 3966 } 3967 // Skip ',' if any 3968 IsComma = Tok.is(tok::comma); 3969 if (IsComma) 3970 ConsumeToken(); 3971 else if (Tok.isNot(tok::r_paren) && 3972 Tok.isNot(tok::annot_pragma_openmp_end) && 3973 (!MayHaveTail || Tok.isNot(tok::colon))) 3974 Diag(Tok, diag::err_omp_expected_punc) 3975 << ((Kind == OMPC_flush) ? getOpenMPDirectiveName(OMPD_flush) 3976 : getOpenMPClauseName(Kind)) 3977 << (Kind == OMPC_flush); 3978 } 3979 3980 // Parse ')' for linear clause with modifier. 3981 if (NeedRParenForLinear) 3982 LinearT.consumeClose(); 3983 3984 // Parse ':' linear-step (or ':' alignment). 3985 const bool MustHaveTail = MayHaveTail && Tok.is(tok::colon); 3986 if (MustHaveTail) { 3987 Data.ColonLoc = Tok.getLocation(); 3988 SourceLocation ELoc = ConsumeToken(); 3989 ExprResult Tail = ParseAssignmentExpression(); 3990 Tail = 3991 Actions.ActOnFinishFullExpr(Tail.get(), ELoc, /*DiscardedValue*/ false); 3992 if (Tail.isUsable()) 3993 Data.DepModOrTailExpr = Tail.get(); 3994 else 3995 SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end, 3996 StopBeforeMatch); 3997 } 3998 3999 // Parse ')'. 4000 Data.RLoc = Tok.getLocation(); 4001 if (!T.consumeClose()) 4002 Data.RLoc = T.getCloseLocation(); 4003 // Exit from scope when the iterator is used in depend clause. 4004 if (HasIterator) 4005 ExitScope(); 4006 return (Kind != OMPC_depend && Kind != OMPC_map && Vars.empty()) || 4007 (MustHaveTail && !Data.DepModOrTailExpr) || InvalidReductionId || 4008 IsInvalidMapperModifier; 4009 } 4010 4011 /// Parsing of OpenMP clause 'private', 'firstprivate', 'lastprivate', 4012 /// 'shared', 'copyin', 'copyprivate', 'flush', 'reduction', 'task_reduction', 4013 /// 'in_reduction', 'nontemporal', 'exclusive' or 'inclusive'. 4014 /// 4015 /// private-clause: 4016 /// 'private' '(' list ')' 4017 /// firstprivate-clause: 4018 /// 'firstprivate' '(' list ')' 4019 /// lastprivate-clause: 4020 /// 'lastprivate' '(' list ')' 4021 /// shared-clause: 4022 /// 'shared' '(' list ')' 4023 /// linear-clause: 4024 /// 'linear' '(' linear-list [ ':' linear-step ] ')' 4025 /// aligned-clause: 4026 /// 'aligned' '(' list [ ':' alignment ] ')' 4027 /// reduction-clause: 4028 /// 'reduction' '(' [ modifier ',' ] reduction-identifier ':' list ')' 4029 /// task_reduction-clause: 4030 /// 'task_reduction' '(' reduction-identifier ':' list ')' 4031 /// in_reduction-clause: 4032 /// 'in_reduction' '(' reduction-identifier ':' list ')' 4033 /// copyprivate-clause: 4034 /// 'copyprivate' '(' list ')' 4035 /// flush-clause: 4036 /// 'flush' '(' list ')' 4037 /// depend-clause: 4038 /// 'depend' '(' in | out | inout : list | source ')' 4039 /// map-clause: 4040 /// 'map' '(' [ [ always [,] ] [ close [,] ] 4041 /// [ mapper '(' mapper-identifier ')' [,] ] 4042 /// to | from | tofrom | alloc | release | delete ':' ] list ')'; 4043 /// to-clause: 4044 /// 'to' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')' 4045 /// from-clause: 4046 /// 'from' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')' 4047 /// use_device_ptr-clause: 4048 /// 'use_device_ptr' '(' list ')' 4049 /// use_device_addr-clause: 4050 /// 'use_device_addr' '(' list ')' 4051 /// is_device_ptr-clause: 4052 /// 'is_device_ptr' '(' list ')' 4053 /// allocate-clause: 4054 /// 'allocate' '(' [ allocator ':' ] list ')' 4055 /// nontemporal-clause: 4056 /// 'nontemporal' '(' list ')' 4057 /// inclusive-clause: 4058 /// 'inclusive' '(' list ')' 4059 /// exclusive-clause: 4060 /// 'exclusive' '(' list ')' 4061 /// 4062 /// For 'linear' clause linear-list may have the following forms: 4063 /// list 4064 /// modifier(list) 4065 /// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++). 4066 OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind, 4067 OpenMPClauseKind Kind, 4068 bool ParseOnly) { 4069 SourceLocation Loc = Tok.getLocation(); 4070 SourceLocation LOpen = ConsumeToken(); 4071 SmallVector<Expr *, 4> Vars; 4072 OpenMPVarListDataTy Data; 4073 4074 if (ParseOpenMPVarList(DKind, Kind, Vars, Data)) 4075 return nullptr; 4076 4077 if (ParseOnly) 4078 return nullptr; 4079 OMPVarListLocTy Locs(Loc, LOpen, Data.RLoc); 4080 return Actions.ActOnOpenMPVarListClause( 4081 Kind, Vars, Data.DepModOrTailExpr, Locs, Data.ColonLoc, 4082 Data.ReductionOrMapperIdScopeSpec, Data.ReductionOrMapperId, 4083 Data.ExtraModifier, Data.MapTypeModifiers, Data.MapTypeModifiersLoc, 4084 Data.IsMapTypeImplicit, Data.ExtraModifierLoc, Data.MotionModifiers, 4085 Data.MotionModifiersLoc); 4086 } 4087
Indexes created Tue Feb 24 08:35:24 UTC 2026