clang  8.0.0svn
ParseOpenMP.cpp
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1 //===--- ParseOpenMP.cpp - OpenMP directives parsing ----------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 /// \file
10 /// This file implements parsing of all OpenMP directives and clauses.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/StmtOpenMP.h"
17 #include "clang/Parse/Parser.h"
19 #include "clang/Sema/Scope.h"
20 #include "llvm/ADT/PointerIntPair.h"
21 
22 using namespace clang;
23 
24 //===----------------------------------------------------------------------===//
25 // OpenMP declarative directives.
26 //===----------------------------------------------------------------------===//
27 
28 namespace {
30  OMPD_cancellation = OMPD_unknown + 1,
31  OMPD_data,
32  OMPD_declare,
33  OMPD_end,
34  OMPD_end_declare,
35  OMPD_enter,
36  OMPD_exit,
37  OMPD_point,
38  OMPD_reduction,
39  OMPD_target_enter,
40  OMPD_target_exit,
41  OMPD_update,
42  OMPD_distribute_parallel,
43  OMPD_teams_distribute_parallel,
44  OMPD_target_teams_distribute_parallel
45 };
46 
47 class ThreadprivateListParserHelper final {
48  SmallVector<Expr *, 4> Identifiers;
49  Parser *P;
50 
51 public:
52  ThreadprivateListParserHelper(Parser *P) : P(P) {}
53  void operator()(CXXScopeSpec &SS, DeclarationNameInfo NameInfo) {
54  ExprResult Res =
55  P->getActions().ActOnOpenMPIdExpression(P->getCurScope(), SS, NameInfo);
56  if (Res.isUsable())
57  Identifiers.push_back(Res.get());
58  }
59  llvm::ArrayRef<Expr *> getIdentifiers() const { return Identifiers; }
60 };
61 } // namespace
62 
63 // Map token string to extended OMP token kind that are
64 // OpenMPDirectiveKind + OpenMPDirectiveKindEx.
65 static unsigned getOpenMPDirectiveKindEx(StringRef S) {
66  auto DKind = getOpenMPDirectiveKind(S);
67  if (DKind != OMPD_unknown)
68  return DKind;
69 
70  return llvm::StringSwitch<unsigned>(S)
71  .Case("cancellation", OMPD_cancellation)
72  .Case("data", OMPD_data)
73  .Case("declare", OMPD_declare)
74  .Case("end", OMPD_end)
75  .Case("enter", OMPD_enter)
76  .Case("exit", OMPD_exit)
77  .Case("point", OMPD_point)
78  .Case("reduction", OMPD_reduction)
79  .Case("update", OMPD_update)
80  .Default(OMPD_unknown);
81 }
82 
84  // Array of foldings: F[i][0] F[i][1] ===> F[i][2].
85  // E.g.: OMPD_for OMPD_simd ===> OMPD_for_simd
86  // TODO: add other combined directives in topological order.
87  static const unsigned F[][3] = {
88  {OMPD_cancellation, OMPD_point, OMPD_cancellation_point},
89  {OMPD_declare, OMPD_reduction, OMPD_declare_reduction},
90  {OMPD_declare, OMPD_simd, OMPD_declare_simd},
91  {OMPD_declare, OMPD_target, OMPD_declare_target},
92  {OMPD_distribute, OMPD_parallel, OMPD_distribute_parallel},
93  {OMPD_distribute_parallel, OMPD_for, OMPD_distribute_parallel_for},
94  {OMPD_distribute_parallel_for, OMPD_simd,
95  OMPD_distribute_parallel_for_simd},
96  {OMPD_distribute, OMPD_simd, OMPD_distribute_simd},
97  {OMPD_end, OMPD_declare, OMPD_end_declare},
98  {OMPD_end_declare, OMPD_target, OMPD_end_declare_target},
99  {OMPD_target, OMPD_data, OMPD_target_data},
100  {OMPD_target, OMPD_enter, OMPD_target_enter},
101  {OMPD_target, OMPD_exit, OMPD_target_exit},
102  {OMPD_target, OMPD_update, OMPD_target_update},
103  {OMPD_target_enter, OMPD_data, OMPD_target_enter_data},
104  {OMPD_target_exit, OMPD_data, OMPD_target_exit_data},
105  {OMPD_for, OMPD_simd, OMPD_for_simd},
106  {OMPD_parallel, OMPD_for, OMPD_parallel_for},
107  {OMPD_parallel_for, OMPD_simd, OMPD_parallel_for_simd},
108  {OMPD_parallel, OMPD_sections, OMPD_parallel_sections},
109  {OMPD_taskloop, OMPD_simd, OMPD_taskloop_simd},
110  {OMPD_target, OMPD_parallel, OMPD_target_parallel},
111  {OMPD_target, OMPD_simd, OMPD_target_simd},
112  {OMPD_target_parallel, OMPD_for, OMPD_target_parallel_for},
113  {OMPD_target_parallel_for, OMPD_simd, OMPD_target_parallel_for_simd},
114  {OMPD_teams, OMPD_distribute, OMPD_teams_distribute},
115  {OMPD_teams_distribute, OMPD_simd, OMPD_teams_distribute_simd},
116  {OMPD_teams_distribute, OMPD_parallel, OMPD_teams_distribute_parallel},
117  {OMPD_teams_distribute_parallel, OMPD_for,
118  OMPD_teams_distribute_parallel_for},
119  {OMPD_teams_distribute_parallel_for, OMPD_simd,
120  OMPD_teams_distribute_parallel_for_simd},
121  {OMPD_target, OMPD_teams, OMPD_target_teams},
122  {OMPD_target_teams, OMPD_distribute, OMPD_target_teams_distribute},
123  {OMPD_target_teams_distribute, OMPD_parallel,
124  OMPD_target_teams_distribute_parallel},
125  {OMPD_target_teams_distribute, OMPD_simd,
126  OMPD_target_teams_distribute_simd},
127  {OMPD_target_teams_distribute_parallel, OMPD_for,
128  OMPD_target_teams_distribute_parallel_for},
129  {OMPD_target_teams_distribute_parallel_for, OMPD_simd,
130  OMPD_target_teams_distribute_parallel_for_simd}};
131  enum { CancellationPoint = 0, DeclareReduction = 1, TargetData = 2 };
132  Token Tok = P.getCurToken();
133  unsigned DKind =
134  Tok.isAnnotation()
135  ? static_cast<unsigned>(OMPD_unknown)
137  if (DKind == OMPD_unknown)
138  return OMPD_unknown;
139 
140  for (unsigned I = 0; I < llvm::array_lengthof(F); ++I) {
141  if (DKind != F[I][0])
142  continue;
143 
144  Tok = P.getPreprocessor().LookAhead(0);
145  unsigned SDKind =
146  Tok.isAnnotation()
147  ? static_cast<unsigned>(OMPD_unknown)
149  if (SDKind == OMPD_unknown)
150  continue;
151 
152  if (SDKind == F[I][1]) {
153  P.ConsumeToken();
154  DKind = F[I][2];
155  }
156  }
157  return DKind < OMPD_unknown ? static_cast<OpenMPDirectiveKind>(DKind)
158  : OMPD_unknown;
159 }
160 
162  Token Tok = P.getCurToken();
163  Sema &Actions = P.getActions();
165  // Allow to use 'operator' keyword for C++ operators
166  bool WithOperator = false;
167  if (Tok.is(tok::kw_operator)) {
168  P.ConsumeToken();
169  Tok = P.getCurToken();
170  WithOperator = true;
171  }
172  switch (Tok.getKind()) {
173  case tok::plus: // '+'
174  OOK = OO_Plus;
175  break;
176  case tok::minus: // '-'
177  OOK = OO_Minus;
178  break;
179  case tok::star: // '*'
180  OOK = OO_Star;
181  break;
182  case tok::amp: // '&'
183  OOK = OO_Amp;
184  break;
185  case tok::pipe: // '|'
186  OOK = OO_Pipe;
187  break;
188  case tok::caret: // '^'
189  OOK = OO_Caret;
190  break;
191  case tok::ampamp: // '&&'
192  OOK = OO_AmpAmp;
193  break;
194  case tok::pipepipe: // '||'
195  OOK = OO_PipePipe;
196  break;
197  case tok::identifier: // identifier
198  if (!WithOperator)
199  break;
200  LLVM_FALLTHROUGH;
201  default:
202  P.Diag(Tok.getLocation(), diag::err_omp_expected_reduction_identifier);
203  P.SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
205  return DeclarationName();
206  }
207  P.ConsumeToken();
208  auto &DeclNames = Actions.getASTContext().DeclarationNames;
209  return OOK == OO_None ? DeclNames.getIdentifier(Tok.getIdentifierInfo())
210  : DeclNames.getCXXOperatorName(OOK);
211 }
212 
213 /// Parse 'omp declare reduction' construct.
214 ///
215 /// declare-reduction-directive:
216 /// annot_pragma_openmp 'declare' 'reduction'
217 /// '(' <reduction_id> ':' <type> {',' <type>} ':' <expression> ')'
218 /// ['initializer' '(' ('omp_priv' '=' <expression>)|<function_call> ')']
219 /// annot_pragma_openmp_end
220 /// <reduction_id> is either a base language identifier or one of the following
221 /// operators: '+', '-', '*', '&', '|', '^', '&&' and '||'.
222 ///
224 Parser::ParseOpenMPDeclareReductionDirective(AccessSpecifier AS) {
225  // Parse '('.
226  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
227  if (T.expectAndConsume(diag::err_expected_lparen_after,
228  getOpenMPDirectiveName(OMPD_declare_reduction))) {
229  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
230  return DeclGroupPtrTy();
231  }
232 
234  if (Name.isEmpty() && Tok.is(tok::annot_pragma_openmp_end))
235  return DeclGroupPtrTy();
236 
237  // Consume ':'.
238  bool IsCorrect = !ExpectAndConsume(tok::colon);
239 
240  if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
241  return DeclGroupPtrTy();
242 
243  IsCorrect = IsCorrect && !Name.isEmpty();
244 
245  if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) {
246  Diag(Tok.getLocation(), diag::err_expected_type);
247  IsCorrect = false;
248  }
249 
250  if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
251  return DeclGroupPtrTy();
252 
254  // Parse list of types until ':' token.
255  do {
256  ColonProtectionRAIIObject ColonRAII(*this);
257  SourceRange Range;
258  TypeResult TR =
259  ParseTypeName(&Range, DeclaratorContext::PrototypeContext, AS);
260  if (TR.isUsable()) {
261  QualType ReductionType =
262  Actions.ActOnOpenMPDeclareReductionType(Range.getBegin(), TR);
263  if (!ReductionType.isNull()) {
264  ReductionTypes.push_back(
265  std::make_pair(ReductionType, Range.getBegin()));
266  }
267  } else {
268  SkipUntil(tok::comma, tok::colon, tok::annot_pragma_openmp_end,
269  StopBeforeMatch);
270  }
271 
272  if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end))
273  break;
274 
275  // Consume ','.
276  if (ExpectAndConsume(tok::comma)) {
277  IsCorrect = false;
278  if (Tok.is(tok::annot_pragma_openmp_end)) {
279  Diag(Tok.getLocation(), diag::err_expected_type);
280  return DeclGroupPtrTy();
281  }
282  }
283  } while (Tok.isNot(tok::annot_pragma_openmp_end));
284 
285  if (ReductionTypes.empty()) {
286  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
287  return DeclGroupPtrTy();
288  }
289 
290  if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
291  return DeclGroupPtrTy();
292 
293  // Consume ':'.
294  if (ExpectAndConsume(tok::colon))
295  IsCorrect = false;
296 
297  if (Tok.is(tok::annot_pragma_openmp_end)) {
298  Diag(Tok.getLocation(), diag::err_expected_expression);
299  return DeclGroupPtrTy();
300  }
301 
302  DeclGroupPtrTy DRD = Actions.ActOnOpenMPDeclareReductionDirectiveStart(
303  getCurScope(), Actions.getCurLexicalContext(), Name, ReductionTypes, AS);
304 
305  // Parse <combiner> expression and then parse initializer if any for each
306  // correct type.
307  unsigned I = 0, E = ReductionTypes.size();
308  for (Decl *D : DRD.get()) {
309  TentativeParsingAction TPA(*this);
310  ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope |
313  // Parse <combiner> expression.
314  Actions.ActOnOpenMPDeclareReductionCombinerStart(getCurScope(), D);
315  ExprResult CombinerResult =
316  Actions.ActOnFinishFullExpr(ParseAssignmentExpression().get(),
317  D->getLocation(), /*DiscardedValue=*/true);
318  Actions.ActOnOpenMPDeclareReductionCombinerEnd(D, CombinerResult.get());
319 
320  if (CombinerResult.isInvalid() && Tok.isNot(tok::r_paren) &&
321  Tok.isNot(tok::annot_pragma_openmp_end)) {
322  TPA.Commit();
323  IsCorrect = false;
324  break;
325  }
326  IsCorrect = !T.consumeClose() && IsCorrect && CombinerResult.isUsable();
327  ExprResult InitializerResult;
328  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
329  // Parse <initializer> expression.
330  if (Tok.is(tok::identifier) &&
331  Tok.getIdentifierInfo()->isStr("initializer")) {
332  ConsumeToken();
333  } else {
334  Diag(Tok.getLocation(), diag::err_expected) << "'initializer'";
335  TPA.Commit();
336  IsCorrect = false;
337  break;
338  }
339  // Parse '('.
340  BalancedDelimiterTracker T(*this, tok::l_paren,
341  tok::annot_pragma_openmp_end);
342  IsCorrect =
343  !T.expectAndConsume(diag::err_expected_lparen_after, "initializer") &&
344  IsCorrect;
345  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
346  ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope |
349  // Parse expression.
350  VarDecl *OmpPrivParm =
351  Actions.ActOnOpenMPDeclareReductionInitializerStart(getCurScope(),
352  D);
353  // Check if initializer is omp_priv <init_expr> or something else.
354  if (Tok.is(tok::identifier) &&
355  Tok.getIdentifierInfo()->isStr("omp_priv")) {
356  if (Actions.getLangOpts().CPlusPlus) {
357  InitializerResult = Actions.ActOnFinishFullExpr(
358  ParseAssignmentExpression().get(), D->getLocation(),
359  /*DiscardedValue=*/true);
360  } else {
361  ConsumeToken();
362  ParseOpenMPReductionInitializerForDecl(OmpPrivParm);
363  }
364  } else {
365  InitializerResult = Actions.ActOnFinishFullExpr(
366  ParseAssignmentExpression().get(), D->getLocation(),
367  /*DiscardedValue=*/true);
368  }
369  Actions.ActOnOpenMPDeclareReductionInitializerEnd(
370  D, InitializerResult.get(), OmpPrivParm);
371  if (InitializerResult.isInvalid() && Tok.isNot(tok::r_paren) &&
372  Tok.isNot(tok::annot_pragma_openmp_end)) {
373  TPA.Commit();
374  IsCorrect = false;
375  break;
376  }
377  IsCorrect =
378  !T.consumeClose() && IsCorrect && !InitializerResult.isInvalid();
379  }
380  }
381 
382  ++I;
383  // Revert parsing if not the last type, otherwise accept it, we're done with
384  // parsing.
385  if (I != E)
386  TPA.Revert();
387  else
388  TPA.Commit();
389  }
390  return Actions.ActOnOpenMPDeclareReductionDirectiveEnd(getCurScope(), DRD,
391  IsCorrect);
392 }
393 
394 void Parser::ParseOpenMPReductionInitializerForDecl(VarDecl *OmpPrivParm) {
395  // Parse declarator '=' initializer.
396  // If a '==' or '+=' is found, suggest a fixit to '='.
397  if (isTokenEqualOrEqualTypo()) {
398  ConsumeToken();
399 
400  if (Tok.is(tok::code_completion)) {
401  Actions.CodeCompleteInitializer(getCurScope(), OmpPrivParm);
402  Actions.FinalizeDeclaration(OmpPrivParm);
403  cutOffParsing();
404  return;
405  }
406 
407  ExprResult Init(ParseInitializer());
408 
409  if (Init.isInvalid()) {
410  SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch);
411  Actions.ActOnInitializerError(OmpPrivParm);
412  } else {
413  Actions.AddInitializerToDecl(OmpPrivParm, Init.get(),
414  /*DirectInit=*/false);
415  }
416  } else if (Tok.is(tok::l_paren)) {
417  // Parse C++ direct initializer: '(' expression-list ')'
418  BalancedDelimiterTracker T(*this, tok::l_paren);
419  T.consumeOpen();
420 
421  ExprVector Exprs;
422  CommaLocsTy CommaLocs;
423 
424  SourceLocation LParLoc = T.getOpenLocation();
425  if (ParseExpressionList(
426  Exprs, CommaLocs, [this, OmpPrivParm, LParLoc, &Exprs] {
427  QualType PreferredType = Actions.ProduceConstructorSignatureHelp(
428  getCurScope(),
429  OmpPrivParm->getType()->getCanonicalTypeInternal(),
430  OmpPrivParm->getLocation(), Exprs, LParLoc);
431  CalledSignatureHelp = true;
432  Actions.CodeCompleteExpression(getCurScope(), PreferredType);
433  })) {
434  if (PP.isCodeCompletionReached() && !CalledSignatureHelp) {
435  Actions.ProduceConstructorSignatureHelp(
436  getCurScope(), OmpPrivParm->getType()->getCanonicalTypeInternal(),
437  OmpPrivParm->getLocation(), Exprs, LParLoc);
438  CalledSignatureHelp = true;
439  }
440  Actions.ActOnInitializerError(OmpPrivParm);
441  SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch);
442  } else {
443  // Match the ')'.
444  SourceLocation RLoc = Tok.getLocation();
445  if (!T.consumeClose())
446  RLoc = T.getCloseLocation();
447 
448  assert(!Exprs.empty() && Exprs.size() - 1 == CommaLocs.size() &&
449  "Unexpected number of commas!");
450 
451  ExprResult Initializer =
452  Actions.ActOnParenListExpr(T.getOpenLocation(), RLoc, Exprs);
453  Actions.AddInitializerToDecl(OmpPrivParm, Initializer.get(),
454  /*DirectInit=*/true);
455  }
456  } else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
457  // Parse C++0x braced-init-list.
458  Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
459 
460  ExprResult Init(ParseBraceInitializer());
461 
462  if (Init.isInvalid()) {
463  Actions.ActOnInitializerError(OmpPrivParm);
464  } else {
465  Actions.AddInitializerToDecl(OmpPrivParm, Init.get(),
466  /*DirectInit=*/true);
467  }
468  } else {
469  Actions.ActOnUninitializedDecl(OmpPrivParm);
470  }
471 }
472 
473 namespace {
474 /// RAII that recreates function context for correct parsing of clauses of
475 /// 'declare simd' construct.
476 /// OpenMP, 2.8.2 declare simd Construct
477 /// The expressions appearing in the clauses of this directive are evaluated in
478 /// the scope of the arguments of the function declaration or definition.
479 class FNContextRAII final {
480  Parser &P;
481  Sema::CXXThisScopeRAII *ThisScope;
482  Parser::ParseScope *TempScope;
483  Parser::ParseScope *FnScope;
484  bool HasTemplateScope = false;
485  bool HasFunScope = false;
486  FNContextRAII() = delete;
487  FNContextRAII(const FNContextRAII &) = delete;
488  FNContextRAII &operator=(const FNContextRAII &) = delete;
489 
490 public:
491  FNContextRAII(Parser &P, Parser::DeclGroupPtrTy Ptr) : P(P) {
492  Decl *D = *Ptr.get().begin();
493  NamedDecl *ND = dyn_cast<NamedDecl>(D);
494  RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext());
495  Sema &Actions = P.getActions();
496 
497  // Allow 'this' within late-parsed attributes.
498  ThisScope = new Sema::CXXThisScopeRAII(Actions, RD, /*TypeQuals=*/0,
499  ND && ND->isCXXInstanceMember());
500 
501  // If the Decl is templatized, add template parameters to scope.
502  HasTemplateScope = D->isTemplateDecl();
503  TempScope =
504  new Parser::ParseScope(&P, Scope::TemplateParamScope, HasTemplateScope);
505  if (HasTemplateScope)
506  Actions.ActOnReenterTemplateScope(Actions.getCurScope(), D);
507 
508  // If the Decl is on a function, add function parameters to the scope.
509  HasFunScope = D->isFunctionOrFunctionTemplate();
510  FnScope = new Parser::ParseScope(
512  HasFunScope);
513  if (HasFunScope)
514  Actions.ActOnReenterFunctionContext(Actions.getCurScope(), D);
515  }
516  ~FNContextRAII() {
517  if (HasFunScope) {
519  FnScope->Exit(); // Pop scope, and remove Decls from IdResolver
520  }
521  if (HasTemplateScope)
522  TempScope->Exit();
523  delete FnScope;
524  delete TempScope;
525  delete ThisScope;
526  }
527 };
528 } // namespace
529 
530 /// Parses clauses for 'declare simd' directive.
531 /// clause:
532 /// 'inbranch' | 'notinbranch'
533 /// 'simdlen' '(' <expr> ')'
534 /// { 'uniform' '(' <argument_list> ')' }
535 /// { 'aligned '(' <argument_list> [ ':' <alignment> ] ')' }
536 /// { 'linear '(' <argument_list> [ ':' <step> ] ')' }
538  Parser &P, OMPDeclareSimdDeclAttr::BranchStateTy &BS, ExprResult &SimdLen,
540  SmallVectorImpl<Expr *> &Alignments, SmallVectorImpl<Expr *> &Linears,
541  SmallVectorImpl<unsigned> &LinModifiers, SmallVectorImpl<Expr *> &Steps) {
542  SourceRange BSRange;
543  const Token &Tok = P.getCurToken();
544  bool IsError = false;
545  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
546  if (Tok.isNot(tok::identifier))
547  break;
548  OMPDeclareSimdDeclAttr::BranchStateTy Out;
549  IdentifierInfo *II = Tok.getIdentifierInfo();
550  StringRef ClauseName = II->getName();
551  // Parse 'inranch|notinbranch' clauses.
552  if (OMPDeclareSimdDeclAttr::ConvertStrToBranchStateTy(ClauseName, Out)) {
553  if (BS != OMPDeclareSimdDeclAttr::BS_Undefined && BS != Out) {
554  P.Diag(Tok, diag::err_omp_declare_simd_inbranch_notinbranch)
555  << ClauseName
556  << OMPDeclareSimdDeclAttr::ConvertBranchStateTyToStr(BS) << BSRange;
557  IsError = true;
558  }
559  BS = Out;
560  BSRange = SourceRange(Tok.getLocation(), Tok.getEndLoc());
561  P.ConsumeToken();
562  } else if (ClauseName.equals("simdlen")) {
563  if (SimdLen.isUsable()) {
564  P.Diag(Tok, diag::err_omp_more_one_clause)
565  << getOpenMPDirectiveName(OMPD_declare_simd) << ClauseName << 0;
566  IsError = true;
567  }
568  P.ConsumeToken();
569  SourceLocation RLoc;
570  SimdLen = P.ParseOpenMPParensExpr(ClauseName, RLoc);
571  if (SimdLen.isInvalid())
572  IsError = true;
573  } else {
574  OpenMPClauseKind CKind = getOpenMPClauseKind(ClauseName);
575  if (CKind == OMPC_uniform || CKind == OMPC_aligned ||
576  CKind == OMPC_linear) {
578  SmallVectorImpl<Expr *> *Vars = &Uniforms;
579  if (CKind == OMPC_aligned)
580  Vars = &Aligneds;
581  else if (CKind == OMPC_linear)
582  Vars = &Linears;
583 
584  P.ConsumeToken();
585  if (P.ParseOpenMPVarList(OMPD_declare_simd,
586  getOpenMPClauseKind(ClauseName), *Vars, Data))
587  IsError = true;
588  if (CKind == OMPC_aligned) {
589  Alignments.append(Aligneds.size() - Alignments.size(), Data.TailExpr);
590  } else if (CKind == OMPC_linear) {
592  Data.DepLinMapLoc))
593  Data.LinKind = OMPC_LINEAR_val;
594  LinModifiers.append(Linears.size() - LinModifiers.size(),
595  Data.LinKind);
596  Steps.append(Linears.size() - Steps.size(), Data.TailExpr);
597  }
598  } else
599  // TODO: add parsing of other clauses.
600  break;
601  }
602  // Skip ',' if any.
603  if (Tok.is(tok::comma))
604  P.ConsumeToken();
605  }
606  return IsError;
607 }
608 
609 /// Parse clauses for '#pragma omp declare simd'.
611 Parser::ParseOMPDeclareSimdClauses(Parser::DeclGroupPtrTy Ptr,
612  CachedTokens &Toks, SourceLocation Loc) {
613  PP.EnterToken(Tok);
614  PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true);
615  // Consume the previously pushed token.
616  ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
617 
618  FNContextRAII FnContext(*this, Ptr);
619  OMPDeclareSimdDeclAttr::BranchStateTy BS =
620  OMPDeclareSimdDeclAttr::BS_Undefined;
621  ExprResult Simdlen;
622  SmallVector<Expr *, 4> Uniforms;
623  SmallVector<Expr *, 4> Aligneds;
624  SmallVector<Expr *, 4> Alignments;
625  SmallVector<Expr *, 4> Linears;
626  SmallVector<unsigned, 4> LinModifiers;
628  bool IsError =
629  parseDeclareSimdClauses(*this, BS, Simdlen, Uniforms, Aligneds,
630  Alignments, Linears, LinModifiers, Steps);
631  // Need to check for extra tokens.
632  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
633  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
634  << getOpenMPDirectiveName(OMPD_declare_simd);
635  while (Tok.isNot(tok::annot_pragma_openmp_end))
636  ConsumeAnyToken();
637  }
638  // Skip the last annot_pragma_openmp_end.
639  SourceLocation EndLoc = ConsumeAnnotationToken();
640  if (IsError)
641  return Ptr;
642  return Actions.ActOnOpenMPDeclareSimdDirective(
643  Ptr, BS, Simdlen.get(), Uniforms, Aligneds, Alignments, Linears,
644  LinModifiers, Steps, SourceRange(Loc, EndLoc));
645 }
646 
647 /// Parsing of declarative OpenMP directives.
648 ///
649 /// threadprivate-directive:
650 /// annot_pragma_openmp 'threadprivate' simple-variable-list
651 /// annot_pragma_openmp_end
652 ///
653 /// declare-reduction-directive:
654 /// annot_pragma_openmp 'declare' 'reduction' [...]
655 /// annot_pragma_openmp_end
656 ///
657 /// declare-simd-directive:
658 /// annot_pragma_openmp 'declare simd' {<clause> [,]}
659 /// annot_pragma_openmp_end
660 /// <function declaration/definition>
661 ///
662 /// requires directive:
663 /// annot_pragma_openmp 'requires' <clause> [[[,] <clause>] ... ]
664 /// annot_pragma_openmp_end
665 ///
666 Parser::DeclGroupPtrTy Parser::ParseOpenMPDeclarativeDirectiveWithExtDecl(
667  AccessSpecifier &AS, ParsedAttributesWithRange &Attrs,
668  DeclSpec::TST TagType, Decl *Tag) {
669  assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!");
670  ParenBraceBracketBalancer BalancerRAIIObj(*this);
671 
672  SourceLocation Loc = ConsumeAnnotationToken();
674 
675  switch (DKind) {
676  case OMPD_threadprivate: {
677  ConsumeToken();
678  ThreadprivateListParserHelper Helper(this);
679  if (!ParseOpenMPSimpleVarList(OMPD_threadprivate, Helper, true)) {
680  // The last seen token is annot_pragma_openmp_end - need to check for
681  // extra tokens.
682  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
683  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
684  << getOpenMPDirectiveName(OMPD_threadprivate);
685  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
686  }
687  // Skip the last annot_pragma_openmp_end.
688  ConsumeAnnotationToken();
689  return Actions.ActOnOpenMPThreadprivateDirective(Loc,
690  Helper.getIdentifiers());
691  }
692  break;
693  }
694  case OMPD_requires: {
695  SourceLocation StartLoc = ConsumeToken();
698  FirstClauses(OMPC_unknown + 1);
699  if (Tok.is(tok::annot_pragma_openmp_end)) {
700  Diag(Tok, diag::err_omp_expected_clause)
701  << getOpenMPDirectiveName(OMPD_requires);
702  break;
703  }
704  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
705  OpenMPClauseKind CKind = Tok.isAnnotation()
706  ? OMPC_unknown
707  : getOpenMPClauseKind(PP.getSpelling(Tok));
708  Actions.StartOpenMPClause(CKind);
709  OMPClause *Clause =
710  ParseOpenMPClause(OMPD_requires, CKind, !FirstClauses[CKind].getInt());
711  SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end, StopBeforeMatch);
712  FirstClauses[CKind].setInt(true);
713  if (Clause != nullptr)
714  Clauses.push_back(Clause);
715  if (Tok.is(tok::annot_pragma_openmp_end)) {
716  Actions.EndOpenMPClause();
717  break;
718  }
719  // Skip ',' if any.
720  if (Tok.is(tok::comma))
721  ConsumeToken();
722  Actions.EndOpenMPClause();
723  }
724  // Consume final annot_pragma_openmp_end
725  if (Clauses.size() == 0) {
726  Diag(Tok, diag::err_omp_expected_clause)
727  << getOpenMPDirectiveName(OMPD_requires);
728  ConsumeAnnotationToken();
729  return nullptr;
730  }
731  ConsumeAnnotationToken();
732  return Actions.ActOnOpenMPRequiresDirective(StartLoc, Clauses);
733  }
734  case OMPD_declare_reduction:
735  ConsumeToken();
736  if (DeclGroupPtrTy Res = ParseOpenMPDeclareReductionDirective(AS)) {
737  // The last seen token is annot_pragma_openmp_end - need to check for
738  // extra tokens.
739  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
740  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
741  << getOpenMPDirectiveName(OMPD_declare_reduction);
742  while (Tok.isNot(tok::annot_pragma_openmp_end))
743  ConsumeAnyToken();
744  }
745  // Skip the last annot_pragma_openmp_end.
746  ConsumeAnnotationToken();
747  return Res;
748  }
749  break;
750  case OMPD_declare_simd: {
751  // The syntax is:
752  // { #pragma omp declare simd }
753  // <function-declaration-or-definition>
754  //
755  ConsumeToken();
756  CachedTokens Toks;
757  while(Tok.isNot(tok::annot_pragma_openmp_end)) {
758  Toks.push_back(Tok);
759  ConsumeAnyToken();
760  }
761  Toks.push_back(Tok);
762  ConsumeAnyToken();
763 
764  DeclGroupPtrTy Ptr;
765  if (Tok.is(tok::annot_pragma_openmp)) {
766  Ptr = ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs, TagType, Tag);
767  } else if (Tok.isNot(tok::r_brace) && !isEofOrEom()) {
768  // Here we expect to see some function declaration.
769  if (AS == AS_none) {
771  MaybeParseCXX11Attributes(Attrs);
772  ParsingDeclSpec PDS(*this);
773  Ptr = ParseExternalDeclaration(Attrs, &PDS);
774  } else {
775  Ptr =
776  ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag);
777  }
778  }
779  if (!Ptr) {
780  Diag(Loc, diag::err_omp_decl_in_declare_simd);
781  return DeclGroupPtrTy();
782  }
783  return ParseOMPDeclareSimdClauses(Ptr, Toks, Loc);
784  }
785  case OMPD_declare_target: {
786  SourceLocation DTLoc = ConsumeAnyToken();
787  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
788  // OpenMP 4.5 syntax with list of entities.
789  Sema::NamedDeclSetType SameDirectiveDecls;
790  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
791  OMPDeclareTargetDeclAttr::MapTypeTy MT =
792  OMPDeclareTargetDeclAttr::MT_To;
793  if (Tok.is(tok::identifier)) {
794  IdentifierInfo *II = Tok.getIdentifierInfo();
795  StringRef ClauseName = II->getName();
796  // Parse 'to|link' clauses.
797  if (!OMPDeclareTargetDeclAttr::ConvertStrToMapTypeTy(ClauseName,
798  MT)) {
799  Diag(Tok, diag::err_omp_declare_target_unexpected_clause)
800  << ClauseName;
801  break;
802  }
803  ConsumeToken();
804  }
805  auto &&Callback = [this, MT, &SameDirectiveDecls](
806  CXXScopeSpec &SS, DeclarationNameInfo NameInfo) {
807  Actions.ActOnOpenMPDeclareTargetName(getCurScope(), SS, NameInfo, MT,
808  SameDirectiveDecls);
809  };
810  if (ParseOpenMPSimpleVarList(OMPD_declare_target, Callback,
811  /*AllowScopeSpecifier=*/true))
812  break;
813 
814  // Consume optional ','.
815  if (Tok.is(tok::comma))
816  ConsumeToken();
817  }
818  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
819  ConsumeAnyToken();
820  SmallVector<Decl *, 4> Decls(SameDirectiveDecls.begin(),
821  SameDirectiveDecls.end());
822  if (Decls.empty())
823  return DeclGroupPtrTy();
824  return Actions.BuildDeclaratorGroup(Decls);
825  }
826 
827  // Skip the last annot_pragma_openmp_end.
828  ConsumeAnyToken();
829 
830  if (!Actions.ActOnStartOpenMPDeclareTargetDirective(DTLoc))
831  return DeclGroupPtrTy();
832 
834  DKind = parseOpenMPDirectiveKind(*this);
835  while (DKind != OMPD_end_declare_target && Tok.isNot(tok::eof) &&
836  Tok.isNot(tok::r_brace)) {
837  DeclGroupPtrTy Ptr;
838  // Here we expect to see some function declaration.
839  if (AS == AS_none) {
841  MaybeParseCXX11Attributes(Attrs);
842  ParsingDeclSpec PDS(*this);
843  Ptr = ParseExternalDeclaration(Attrs, &PDS);
844  } else {
845  Ptr =
846  ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag);
847  }
848  if (Ptr) {
849  DeclGroupRef Ref = Ptr.get();
850  Decls.append(Ref.begin(), Ref.end());
851  }
852  if (Tok.isAnnotation() && Tok.is(tok::annot_pragma_openmp)) {
853  TentativeParsingAction TPA(*this);
854  ConsumeAnnotationToken();
855  DKind = parseOpenMPDirectiveKind(*this);
856  if (DKind != OMPD_end_declare_target)
857  TPA.Revert();
858  else
859  TPA.Commit();
860  }
861  }
862 
863  if (DKind == OMPD_end_declare_target) {
864  ConsumeAnyToken();
865  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
866  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
867  << getOpenMPDirectiveName(OMPD_end_declare_target);
868  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
869  }
870  // Skip the last annot_pragma_openmp_end.
871  ConsumeAnyToken();
872  } else {
873  Diag(Tok, diag::err_expected_end_declare_target);
874  Diag(DTLoc, diag::note_matching) << "'#pragma omp declare target'";
875  }
876  Actions.ActOnFinishOpenMPDeclareTargetDirective();
877  return Actions.BuildDeclaratorGroup(Decls);
878  }
879  case OMPD_unknown:
880  Diag(Tok, diag::err_omp_unknown_directive);
881  break;
882  case OMPD_parallel:
883  case OMPD_simd:
884  case OMPD_task:
885  case OMPD_taskyield:
886  case OMPD_barrier:
887  case OMPD_taskwait:
888  case OMPD_taskgroup:
889  case OMPD_flush:
890  case OMPD_for:
891  case OMPD_for_simd:
892  case OMPD_sections:
893  case OMPD_section:
894  case OMPD_single:
895  case OMPD_master:
896  case OMPD_ordered:
897  case OMPD_critical:
898  case OMPD_parallel_for:
899  case OMPD_parallel_for_simd:
900  case OMPD_parallel_sections:
901  case OMPD_atomic:
902  case OMPD_target:
903  case OMPD_teams:
904  case OMPD_cancellation_point:
905  case OMPD_cancel:
906  case OMPD_target_data:
907  case OMPD_target_enter_data:
908  case OMPD_target_exit_data:
909  case OMPD_target_parallel:
910  case OMPD_target_parallel_for:
911  case OMPD_taskloop:
912  case OMPD_taskloop_simd:
913  case OMPD_distribute:
914  case OMPD_end_declare_target:
915  case OMPD_target_update:
916  case OMPD_distribute_parallel_for:
917  case OMPD_distribute_parallel_for_simd:
918  case OMPD_distribute_simd:
919  case OMPD_target_parallel_for_simd:
920  case OMPD_target_simd:
921  case OMPD_teams_distribute:
922  case OMPD_teams_distribute_simd:
923  case OMPD_teams_distribute_parallel_for_simd:
924  case OMPD_teams_distribute_parallel_for:
925  case OMPD_target_teams:
926  case OMPD_target_teams_distribute:
927  case OMPD_target_teams_distribute_parallel_for:
928  case OMPD_target_teams_distribute_parallel_for_simd:
929  case OMPD_target_teams_distribute_simd:
930  Diag(Tok, diag::err_omp_unexpected_directive)
931  << 1 << getOpenMPDirectiveName(DKind);
932  break;
933  }
934  while (Tok.isNot(tok::annot_pragma_openmp_end))
935  ConsumeAnyToken();
936  ConsumeAnyToken();
937  return nullptr;
938 }
939 
940 /// Parsing of declarative or executable OpenMP directives.
941 ///
942 /// threadprivate-directive:
943 /// annot_pragma_openmp 'threadprivate' simple-variable-list
944 /// annot_pragma_openmp_end
945 ///
946 /// declare-reduction-directive:
947 /// annot_pragma_openmp 'declare' 'reduction' '(' <reduction_id> ':'
948 /// <type> {',' <type>} ':' <expression> ')' ['initializer' '('
949 /// ('omp_priv' '=' <expression>|<function_call>) ')']
950 /// annot_pragma_openmp_end
951 ///
952 /// executable-directive:
953 /// annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' |
954 /// 'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] |
955 /// 'parallel for' | 'parallel sections' | 'task' | 'taskyield' |
956 /// 'barrier' | 'taskwait' | 'flush' | 'ordered' | 'atomic' |
957 /// 'for simd' | 'parallel for simd' | 'target' | 'target data' |
958 /// 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' |
959 /// 'distribute' | 'target enter data' | 'target exit data' |
960 /// 'target parallel' | 'target parallel for' |
961 /// 'target update' | 'distribute parallel for' |
962 /// 'distribute paralle for simd' | 'distribute simd' |
963 /// 'target parallel for simd' | 'target simd' |
964 /// 'teams distribute' | 'teams distribute simd' |
965 /// 'teams distribute parallel for simd' |
966 /// 'teams distribute parallel for' | 'target teams' |
967 /// 'target teams distribute' |
968 /// 'target teams distribute parallel for' |
969 /// 'target teams distribute parallel for simd' |
970 /// 'target teams distribute simd' {clause}
971 /// annot_pragma_openmp_end
972 ///
973 StmtResult Parser::ParseOpenMPDeclarativeOrExecutableDirective(
974  AllowedConstructsKind Allowed) {
975  assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!");
976  ParenBraceBracketBalancer BalancerRAIIObj(*this);
979  FirstClauses(OMPC_unknown + 1);
980  unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope |
982  SourceLocation Loc = ConsumeAnnotationToken(), EndLoc;
984  OpenMPDirectiveKind CancelRegion = OMPD_unknown;
985  // Name of critical directive.
986  DeclarationNameInfo DirName;
988  bool HasAssociatedStatement = true;
989  bool FlushHasClause = false;
990 
991  switch (DKind) {
992  case OMPD_threadprivate: {
993  if (Allowed != ACK_Any) {
994  Diag(Tok, diag::err_omp_immediate_directive)
995  << getOpenMPDirectiveName(DKind) << 0;
996  }
997  ConsumeToken();
998  ThreadprivateListParserHelper Helper(this);
999  if (!ParseOpenMPSimpleVarList(OMPD_threadprivate, Helper, false)) {
1000  // The last seen token is annot_pragma_openmp_end - need to check for
1001  // extra tokens.
1002  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
1003  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
1004  << getOpenMPDirectiveName(OMPD_threadprivate);
1005  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
1006  }
1007  DeclGroupPtrTy Res = Actions.ActOnOpenMPThreadprivateDirective(
1008  Loc, Helper.getIdentifiers());
1009  Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
1010  }
1011  SkipUntil(tok::annot_pragma_openmp_end);
1012  break;
1013  }
1014  case OMPD_declare_reduction:
1015  ConsumeToken();
1016  if (DeclGroupPtrTy Res =
1017  ParseOpenMPDeclareReductionDirective(/*AS=*/AS_none)) {
1018  // The last seen token is annot_pragma_openmp_end - need to check for
1019  // extra tokens.
1020  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
1021  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
1022  << getOpenMPDirectiveName(OMPD_declare_reduction);
1023  while (Tok.isNot(tok::annot_pragma_openmp_end))
1024  ConsumeAnyToken();
1025  }
1026  ConsumeAnyToken();
1027  Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
1028  } else {
1029  SkipUntil(tok::annot_pragma_openmp_end);
1030  }
1031  break;
1032  case OMPD_flush:
1033  if (PP.LookAhead(0).is(tok::l_paren)) {
1034  FlushHasClause = true;
1035  // Push copy of the current token back to stream to properly parse
1036  // pseudo-clause OMPFlushClause.
1037  PP.EnterToken(Tok);
1038  }
1039  LLVM_FALLTHROUGH;
1040  case OMPD_taskyield:
1041  case OMPD_barrier:
1042  case OMPD_taskwait:
1043  case OMPD_cancellation_point:
1044  case OMPD_cancel:
1045  case OMPD_target_enter_data:
1046  case OMPD_target_exit_data:
1047  case OMPD_target_update:
1048  if (Allowed == ACK_StatementsOpenMPNonStandalone) {
1049  Diag(Tok, diag::err_omp_immediate_directive)
1050  << getOpenMPDirectiveName(DKind) << 0;
1051  }
1052  HasAssociatedStatement = false;
1053  // Fall through for further analysis.
1054  LLVM_FALLTHROUGH;
1055  case OMPD_parallel:
1056  case OMPD_simd:
1057  case OMPD_for:
1058  case OMPD_for_simd:
1059  case OMPD_sections:
1060  case OMPD_single:
1061  case OMPD_section:
1062  case OMPD_master:
1063  case OMPD_critical:
1064  case OMPD_parallel_for:
1065  case OMPD_parallel_for_simd:
1066  case OMPD_parallel_sections:
1067  case OMPD_task:
1068  case OMPD_ordered:
1069  case OMPD_atomic:
1070  case OMPD_target:
1071  case OMPD_teams:
1072  case OMPD_taskgroup:
1073  case OMPD_target_data:
1074  case OMPD_target_parallel:
1075  case OMPD_target_parallel_for:
1076  case OMPD_taskloop:
1077  case OMPD_taskloop_simd:
1078  case OMPD_distribute:
1079  case OMPD_distribute_parallel_for:
1080  case OMPD_distribute_parallel_for_simd:
1081  case OMPD_distribute_simd:
1082  case OMPD_target_parallel_for_simd:
1083  case OMPD_target_simd:
1084  case OMPD_teams_distribute:
1085  case OMPD_teams_distribute_simd:
1086  case OMPD_teams_distribute_parallel_for_simd:
1087  case OMPD_teams_distribute_parallel_for:
1088  case OMPD_target_teams:
1089  case OMPD_target_teams_distribute:
1090  case OMPD_target_teams_distribute_parallel_for:
1091  case OMPD_target_teams_distribute_parallel_for_simd:
1092  case OMPD_target_teams_distribute_simd: {
1093  ConsumeToken();
1094  // Parse directive name of the 'critical' directive if any.
1095  if (DKind == OMPD_critical) {
1096  BalancedDelimiterTracker T(*this, tok::l_paren,
1097  tok::annot_pragma_openmp_end);
1098  if (!T.consumeOpen()) {
1099  if (Tok.isAnyIdentifier()) {
1100  DirName =
1101  DeclarationNameInfo(Tok.getIdentifierInfo(), Tok.getLocation());
1102  ConsumeAnyToken();
1103  } else {
1104  Diag(Tok, diag::err_omp_expected_identifier_for_critical);
1105  }
1106  T.consumeClose();
1107  }
1108  } else if (DKind == OMPD_cancellation_point || DKind == OMPD_cancel) {
1109  CancelRegion = parseOpenMPDirectiveKind(*this);
1110  if (Tok.isNot(tok::annot_pragma_openmp_end))
1111  ConsumeToken();
1112  }
1113 
1114  if (isOpenMPLoopDirective(DKind))
1115  ScopeFlags |= Scope::OpenMPLoopDirectiveScope;
1116  if (isOpenMPSimdDirective(DKind))
1117  ScopeFlags |= Scope::OpenMPSimdDirectiveScope;
1118  ParseScope OMPDirectiveScope(this, ScopeFlags);
1119  Actions.StartOpenMPDSABlock(DKind, DirName, Actions.getCurScope(), Loc);
1120 
1121  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
1122  OpenMPClauseKind CKind =
1123  Tok.isAnnotation()
1124  ? OMPC_unknown
1125  : FlushHasClause ? OMPC_flush
1126  : getOpenMPClauseKind(PP.getSpelling(Tok));
1127  Actions.StartOpenMPClause(CKind);
1128  FlushHasClause = false;
1129  OMPClause *Clause =
1130  ParseOpenMPClause(DKind, CKind, !FirstClauses[CKind].getInt());
1131  FirstClauses[CKind].setInt(true);
1132  if (Clause) {
1133  FirstClauses[CKind].setPointer(Clause);
1134  Clauses.push_back(Clause);
1135  }
1136 
1137  // Skip ',' if any.
1138  if (Tok.is(tok::comma))
1139  ConsumeToken();
1140  Actions.EndOpenMPClause();
1141  }
1142  // End location of the directive.
1143  EndLoc = Tok.getLocation();
1144  // Consume final annot_pragma_openmp_end.
1145  ConsumeAnnotationToken();
1146 
1147  // OpenMP [2.13.8, ordered Construct, Syntax]
1148  // If the depend clause is specified, the ordered construct is a stand-alone
1149  // directive.
1150  if (DKind == OMPD_ordered && FirstClauses[OMPC_depend].getInt()) {
1151  if (Allowed == ACK_StatementsOpenMPNonStandalone) {
1152  Diag(Loc, diag::err_omp_immediate_directive)
1153  << getOpenMPDirectiveName(DKind) << 1
1154  << getOpenMPClauseName(OMPC_depend);
1155  }
1156  HasAssociatedStatement = false;
1157  }
1158 
1159  StmtResult AssociatedStmt;
1160  if (HasAssociatedStatement) {
1161  // The body is a block scope like in Lambdas and Blocks.
1162  Actions.ActOnOpenMPRegionStart(DKind, getCurScope());
1163  // FIXME: We create a bogus CompoundStmt scope to hold the contents of
1164  // the captured region. Code elsewhere assumes that any FunctionScopeInfo
1165  // should have at least one compound statement scope within it.
1166  AssociatedStmt = (Sema::CompoundScopeRAII(Actions), ParseStatement());
1167  AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses);
1168  } else if (DKind == OMPD_target_update || DKind == OMPD_target_enter_data ||
1169  DKind == OMPD_target_exit_data) {
1170  Actions.ActOnOpenMPRegionStart(DKind, getCurScope());
1171  AssociatedStmt = (Sema::CompoundScopeRAII(Actions),
1172  Actions.ActOnCompoundStmt(Loc, Loc, llvm::None,
1173  /*isStmtExpr=*/false));
1174  AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses);
1175  }
1176  Directive = Actions.ActOnOpenMPExecutableDirective(
1177  DKind, DirName, CancelRegion, Clauses, AssociatedStmt.get(), Loc,
1178  EndLoc);
1179 
1180  // Exit scope.
1181  Actions.EndOpenMPDSABlock(Directive.get());
1182  OMPDirectiveScope.Exit();
1183  break;
1184  }
1185  case OMPD_declare_simd:
1186  case OMPD_declare_target:
1187  case OMPD_end_declare_target:
1188  case OMPD_requires:
1189  Diag(Tok, diag::err_omp_unexpected_directive)
1190  << 1 << getOpenMPDirectiveName(DKind);
1191  SkipUntil(tok::annot_pragma_openmp_end);
1192  break;
1193  case OMPD_unknown:
1194  Diag(Tok, diag::err_omp_unknown_directive);
1195  SkipUntil(tok::annot_pragma_openmp_end);
1196  break;
1197  }
1198  return Directive;
1199 }
1200 
1201 // Parses simple list:
1202 // simple-variable-list:
1203 // '(' id-expression {, id-expression} ')'
1204 //
1205 bool Parser::ParseOpenMPSimpleVarList(
1207  const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)> &
1208  Callback,
1209  bool AllowScopeSpecifier) {
1210  // Parse '('.
1211  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1212  if (T.expectAndConsume(diag::err_expected_lparen_after,
1214  return true;
1215  bool IsCorrect = true;
1216  bool NoIdentIsFound = true;
1217 
1218  // Read tokens while ')' or annot_pragma_openmp_end is not found.
1219  while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) {
1220  CXXScopeSpec SS;
1221  UnqualifiedId Name;
1222  // Read var name.
1223  Token PrevTok = Tok;
1224  NoIdentIsFound = false;
1225 
1226  if (AllowScopeSpecifier && getLangOpts().CPlusPlus &&
1227  ParseOptionalCXXScopeSpecifier(SS, nullptr, false)) {
1228  IsCorrect = false;
1229  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1230  StopBeforeMatch);
1231  } else if (ParseUnqualifiedId(SS, false, false, false, false, nullptr,
1232  nullptr, Name)) {
1233  IsCorrect = false;
1234  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1235  StopBeforeMatch);
1236  } else if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren) &&
1237  Tok.isNot(tok::annot_pragma_openmp_end)) {
1238  IsCorrect = false;
1239  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1240  StopBeforeMatch);
1241  Diag(PrevTok.getLocation(), diag::err_expected)
1242  << tok::identifier
1243  << SourceRange(PrevTok.getLocation(), PrevTokLocation);
1244  } else {
1245  Callback(SS, Actions.GetNameFromUnqualifiedId(Name));
1246  }
1247  // Consume ','.
1248  if (Tok.is(tok::comma)) {
1249  ConsumeToken();
1250  }
1251  }
1252 
1253  if (NoIdentIsFound) {
1254  Diag(Tok, diag::err_expected) << tok::identifier;
1255  IsCorrect = false;
1256  }
1257 
1258  // Parse ')'.
1259  IsCorrect = !T.consumeClose() && IsCorrect;
1260 
1261  return !IsCorrect;
1262 }
1263 
1264 /// Parsing of OpenMP clauses.
1265 ///
1266 /// clause:
1267 /// if-clause | final-clause | num_threads-clause | safelen-clause |
1268 /// default-clause | private-clause | firstprivate-clause | shared-clause
1269 /// | linear-clause | aligned-clause | collapse-clause |
1270 /// lastprivate-clause | reduction-clause | proc_bind-clause |
1271 /// schedule-clause | copyin-clause | copyprivate-clause | untied-clause |
1272 /// mergeable-clause | flush-clause | read-clause | write-clause |
1273 /// update-clause | capture-clause | seq_cst-clause | device-clause |
1274 /// simdlen-clause | threads-clause | simd-clause | num_teams-clause |
1275 /// thread_limit-clause | priority-clause | grainsize-clause |
1276 /// nogroup-clause | num_tasks-clause | hint-clause | to-clause |
1277 /// from-clause | is_device_ptr-clause | task_reduction-clause |
1278 /// in_reduction-clause
1279 ///
1280 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
1281  OpenMPClauseKind CKind, bool FirstClause) {
1282  OMPClause *Clause = nullptr;
1283  bool ErrorFound = false;
1284  bool WrongDirective = false;
1285  // Check if clause is allowed for the given directive.
1286  if (CKind != OMPC_unknown && !isAllowedClauseForDirective(DKind, CKind)) {
1287  Diag(Tok, diag::err_omp_unexpected_clause) << getOpenMPClauseName(CKind)
1288  << getOpenMPDirectiveName(DKind);
1289  ErrorFound = true;
1290  WrongDirective = true;
1291  }
1292 
1293  switch (CKind) {
1294  case OMPC_final:
1295  case OMPC_num_threads:
1296  case OMPC_safelen:
1297  case OMPC_simdlen:
1298  case OMPC_collapse:
1299  case OMPC_ordered:
1300  case OMPC_device:
1301  case OMPC_num_teams:
1302  case OMPC_thread_limit:
1303  case OMPC_priority:
1304  case OMPC_grainsize:
1305  case OMPC_num_tasks:
1306  case OMPC_hint:
1307  // OpenMP [2.5, Restrictions]
1308  // At most one num_threads clause can appear on the directive.
1309  // OpenMP [2.8.1, simd construct, Restrictions]
1310  // Only one safelen clause can appear on a simd directive.
1311  // Only one simdlen clause can appear on a simd directive.
1312  // Only one collapse clause can appear on a simd directive.
1313  // OpenMP [2.9.1, target data construct, Restrictions]
1314  // At most one device clause can appear on the directive.
1315  // OpenMP [2.11.1, task Construct, Restrictions]
1316  // At most one if clause can appear on the directive.
1317  // At most one final clause can appear on the directive.
1318  // OpenMP [teams Construct, Restrictions]
1319  // At most one num_teams clause can appear on the directive.
1320  // At most one thread_limit clause can appear on the directive.
1321  // OpenMP [2.9.1, task Construct, Restrictions]
1322  // At most one priority clause can appear on the directive.
1323  // OpenMP [2.9.2, taskloop Construct, Restrictions]
1324  // At most one grainsize clause can appear on the directive.
1325  // OpenMP [2.9.2, taskloop Construct, Restrictions]
1326  // At most one num_tasks clause can appear on the directive.
1327  if (!FirstClause) {
1328  Diag(Tok, diag::err_omp_more_one_clause)
1329  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1330  ErrorFound = true;
1331  }
1332 
1333  if (CKind == OMPC_ordered && PP.LookAhead(/*N=*/0).isNot(tok::l_paren))
1334  Clause = ParseOpenMPClause(CKind, WrongDirective);
1335  else
1336  Clause = ParseOpenMPSingleExprClause(CKind, WrongDirective);
1337  break;
1338  case OMPC_default:
1339  case OMPC_proc_bind:
1340  case OMPC_atomic_default_mem_order:
1341  // OpenMP [2.14.3.1, Restrictions]
1342  // Only a single default clause may be specified on a parallel, task or
1343  // teams directive.
1344  // OpenMP [2.5, parallel Construct, Restrictions]
1345  // At most one proc_bind clause can appear on the directive.
1346  // OpenMP [5.0, Requires directive, Restrictions]
1347  // At most one atomic_default_mem_order clause can appear
1348  // on the directive
1349  if (!FirstClause) {
1350  Diag(Tok, diag::err_omp_more_one_clause)
1351  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1352  ErrorFound = true;
1353  }
1354 
1355  Clause = ParseOpenMPSimpleClause(CKind, WrongDirective);
1356  break;
1357  case OMPC_schedule:
1358  case OMPC_dist_schedule:
1359  case OMPC_defaultmap:
1360  // OpenMP [2.7.1, Restrictions, p. 3]
1361  // Only one schedule clause can appear on a loop directive.
1362  // OpenMP [2.10.4, Restrictions, p. 106]
1363  // At most one defaultmap clause can appear on the directive.
1364  if (!FirstClause) {
1365  Diag(Tok, diag::err_omp_more_one_clause)
1366  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1367  ErrorFound = true;
1368  }
1369  LLVM_FALLTHROUGH;
1370 
1371  case OMPC_if:
1372  Clause = ParseOpenMPSingleExprWithArgClause(CKind, WrongDirective);
1373  break;
1374  case OMPC_nowait:
1375  case OMPC_untied:
1376  case OMPC_mergeable:
1377  case OMPC_read:
1378  case OMPC_write:
1379  case OMPC_update:
1380  case OMPC_capture:
1381  case OMPC_seq_cst:
1382  case OMPC_threads:
1383  case OMPC_simd:
1384  case OMPC_nogroup:
1385  case OMPC_unified_address:
1386  case OMPC_unified_shared_memory:
1387  case OMPC_reverse_offload:
1388  case OMPC_dynamic_allocators:
1389  // OpenMP [2.7.1, Restrictions, p. 9]
1390  // Only one ordered clause can appear on a loop directive.
1391  // OpenMP [2.7.1, Restrictions, C/C++, p. 4]
1392  // Only one nowait clause can appear on a for directive.
1393  // OpenMP [5.0, Requires directive, Restrictions]
1394  // Each of the requires clauses can appear at most once on the directive.
1395  if (!FirstClause) {
1396  Diag(Tok, diag::err_omp_more_one_clause)
1397  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1398  ErrorFound = true;
1399  }
1400 
1401  Clause = ParseOpenMPClause(CKind, WrongDirective);
1402  break;
1403  case OMPC_private:
1404  case OMPC_firstprivate:
1405  case OMPC_lastprivate:
1406  case OMPC_shared:
1407  case OMPC_reduction:
1408  case OMPC_task_reduction:
1409  case OMPC_in_reduction:
1410  case OMPC_linear:
1411  case OMPC_aligned:
1412  case OMPC_copyin:
1413  case OMPC_copyprivate:
1414  case OMPC_flush:
1415  case OMPC_depend:
1416  case OMPC_map:
1417  case OMPC_to:
1418  case OMPC_from:
1419  case OMPC_use_device_ptr:
1420  case OMPC_is_device_ptr:
1421  Clause = ParseOpenMPVarListClause(DKind, CKind, WrongDirective);
1422  break;
1423  case OMPC_unknown:
1424  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
1425  << getOpenMPDirectiveName(DKind);
1426  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
1427  break;
1428  case OMPC_threadprivate:
1429  case OMPC_uniform:
1430  if (!WrongDirective)
1431  Diag(Tok, diag::err_omp_unexpected_clause)
1432  << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind);
1433  SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch);
1434  break;
1435  }
1436  return ErrorFound ? nullptr : Clause;
1437 }
1438 
1439 /// Parses simple expression in parens for single-expression clauses of OpenMP
1440 /// constructs.
1441 /// \param RLoc Returned location of right paren.
1443  SourceLocation &RLoc) {
1444  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1445  if (T.expectAndConsume(diag::err_expected_lparen_after, ClauseName.data()))
1446  return ExprError();
1447 
1448  SourceLocation ELoc = Tok.getLocation();
1449  ExprResult LHS(ParseCastExpression(
1450  /*isUnaryExpression=*/false, /*isAddressOfOperand=*/false, NotTypeCast));
1451  ExprResult Val(ParseRHSOfBinaryExpression(LHS, prec::Conditional));
1452  Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc);
1453 
1454  // Parse ')'.
1455  RLoc = Tok.getLocation();
1456  if (!T.consumeClose())
1457  RLoc = T.getCloseLocation();
1458 
1459  return Val;
1460 }
1461 
1462 /// Parsing of OpenMP clauses with single expressions like 'final',
1463 /// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams',
1464 /// 'thread_limit', 'simdlen', 'priority', 'grainsize', 'num_tasks' or 'hint'.
1465 ///
1466 /// final-clause:
1467 /// 'final' '(' expression ')'
1468 ///
1469 /// num_threads-clause:
1470 /// 'num_threads' '(' expression ')'
1471 ///
1472 /// safelen-clause:
1473 /// 'safelen' '(' expression ')'
1474 ///
1475 /// simdlen-clause:
1476 /// 'simdlen' '(' expression ')'
1477 ///
1478 /// collapse-clause:
1479 /// 'collapse' '(' expression ')'
1480 ///
1481 /// priority-clause:
1482 /// 'priority' '(' expression ')'
1483 ///
1484 /// grainsize-clause:
1485 /// 'grainsize' '(' expression ')'
1486 ///
1487 /// num_tasks-clause:
1488 /// 'num_tasks' '(' expression ')'
1489 ///
1490 /// hint-clause:
1491 /// 'hint' '(' expression ')'
1492 ///
1493 OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind,
1494  bool ParseOnly) {
1495  SourceLocation Loc = ConsumeToken();
1496  SourceLocation LLoc = Tok.getLocation();
1497  SourceLocation RLoc;
1498 
1499  ExprResult Val = ParseOpenMPParensExpr(getOpenMPClauseName(Kind), RLoc);
1500 
1501  if (Val.isInvalid())
1502  return nullptr;
1503 
1504  if (ParseOnly)
1505  return nullptr;
1506  return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc);
1507 }
1508 
1509 /// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'.
1510 ///
1511 /// default-clause:
1512 /// 'default' '(' 'none' | 'shared' ')
1513 ///
1514 /// proc_bind-clause:
1515 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ')
1516 ///
1517 OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind,
1518  bool ParseOnly) {
1519  SourceLocation Loc = Tok.getLocation();
1520  SourceLocation LOpen = ConsumeToken();
1521  // Parse '('.
1522  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1523  if (T.expectAndConsume(diag::err_expected_lparen_after,
1525  return nullptr;
1526 
1527  unsigned Type = getOpenMPSimpleClauseType(
1528  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1529  SourceLocation TypeLoc = Tok.getLocation();
1530  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1531  Tok.isNot(tok::annot_pragma_openmp_end))
1532  ConsumeAnyToken();
1533 
1534  // Parse ')'.
1535  SourceLocation RLoc = Tok.getLocation();
1536  if (!T.consumeClose())
1537  RLoc = T.getCloseLocation();
1538 
1539  if (ParseOnly)
1540  return nullptr;
1541  return Actions.ActOnOpenMPSimpleClause(Kind, Type, TypeLoc, LOpen, Loc, RLoc);
1542 }
1543 
1544 /// Parsing of OpenMP clauses like 'ordered'.
1545 ///
1546 /// ordered-clause:
1547 /// 'ordered'
1548 ///
1549 /// nowait-clause:
1550 /// 'nowait'
1551 ///
1552 /// untied-clause:
1553 /// 'untied'
1554 ///
1555 /// mergeable-clause:
1556 /// 'mergeable'
1557 ///
1558 /// read-clause:
1559 /// 'read'
1560 ///
1561 /// threads-clause:
1562 /// 'threads'
1563 ///
1564 /// simd-clause:
1565 /// 'simd'
1566 ///
1567 /// nogroup-clause:
1568 /// 'nogroup'
1569 ///
1570 OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly) {
1571  SourceLocation Loc = Tok.getLocation();
1572  ConsumeAnyToken();
1573 
1574  if (ParseOnly)
1575  return nullptr;
1576  return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation());
1577 }
1578 
1579 
1580 /// Parsing of OpenMP clauses with single expressions and some additional
1581 /// argument like 'schedule' or 'dist_schedule'.
1582 ///
1583 /// schedule-clause:
1584 /// 'schedule' '(' [ modifier [ ',' modifier ] ':' ] kind [',' expression ]
1585 /// ')'
1586 ///
1587 /// if-clause:
1588 /// 'if' '(' [ directive-name-modifier ':' ] expression ')'
1589 ///
1590 /// defaultmap:
1591 /// 'defaultmap' '(' modifier ':' kind ')'
1592 ///
1593 OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPClauseKind Kind,
1594  bool ParseOnly) {
1595  SourceLocation Loc = ConsumeToken();
1596  SourceLocation DelimLoc;
1597  // Parse '('.
1598  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1599  if (T.expectAndConsume(diag::err_expected_lparen_after,
1601  return nullptr;
1602 
1603  ExprResult Val;
1606  if (Kind == OMPC_schedule) {
1607  enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements };
1608  Arg.resize(NumberOfElements);
1609  KLoc.resize(NumberOfElements);
1610  Arg[Modifier1] = OMPC_SCHEDULE_MODIFIER_unknown;
1611  Arg[Modifier2] = OMPC_SCHEDULE_MODIFIER_unknown;
1612  Arg[ScheduleKind] = OMPC_SCHEDULE_unknown;
1613  unsigned KindModifier = getOpenMPSimpleClauseType(
1614  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1615  if (KindModifier > OMPC_SCHEDULE_unknown) {
1616  // Parse 'modifier'
1617  Arg[Modifier1] = KindModifier;
1618  KLoc[Modifier1] = Tok.getLocation();
1619  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1620  Tok.isNot(tok::annot_pragma_openmp_end))
1621  ConsumeAnyToken();
1622  if (Tok.is(tok::comma)) {
1623  // Parse ',' 'modifier'
1624  ConsumeAnyToken();
1625  KindModifier = getOpenMPSimpleClauseType(
1626  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1627  Arg[Modifier2] = KindModifier > OMPC_SCHEDULE_unknown
1628  ? KindModifier
1629  : (unsigned)OMPC_SCHEDULE_unknown;
1630  KLoc[Modifier2] = Tok.getLocation();
1631  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1632  Tok.isNot(tok::annot_pragma_openmp_end))
1633  ConsumeAnyToken();
1634  }
1635  // Parse ':'
1636  if (Tok.is(tok::colon))
1637  ConsumeAnyToken();
1638  else
1639  Diag(Tok, diag::warn_pragma_expected_colon) << "schedule modifier";
1640  KindModifier = getOpenMPSimpleClauseType(
1641  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1642  }
1643  Arg[ScheduleKind] = KindModifier;
1644  KLoc[ScheduleKind] = Tok.getLocation();
1645  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1646  Tok.isNot(tok::annot_pragma_openmp_end))
1647  ConsumeAnyToken();
1648  if ((Arg[ScheduleKind] == OMPC_SCHEDULE_static ||
1649  Arg[ScheduleKind] == OMPC_SCHEDULE_dynamic ||
1650  Arg[ScheduleKind] == OMPC_SCHEDULE_guided) &&
1651  Tok.is(tok::comma))
1652  DelimLoc = ConsumeAnyToken();
1653  } else if (Kind == OMPC_dist_schedule) {
1654  Arg.push_back(getOpenMPSimpleClauseType(
1655  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok)));
1656  KLoc.push_back(Tok.getLocation());
1657  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1658  Tok.isNot(tok::annot_pragma_openmp_end))
1659  ConsumeAnyToken();
1660  if (Arg.back() == OMPC_DIST_SCHEDULE_static && Tok.is(tok::comma))
1661  DelimLoc = ConsumeAnyToken();
1662  } else if (Kind == OMPC_defaultmap) {
1663  // Get a defaultmap modifier
1664  Arg.push_back(getOpenMPSimpleClauseType(
1665  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok)));
1666  KLoc.push_back(Tok.getLocation());
1667  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1668  Tok.isNot(tok::annot_pragma_openmp_end))
1669  ConsumeAnyToken();
1670  // Parse ':'
1671  if (Tok.is(tok::colon))
1672  ConsumeAnyToken();
1673  else if (Arg.back() != OMPC_DEFAULTMAP_MODIFIER_unknown)
1674  Diag(Tok, diag::warn_pragma_expected_colon) << "defaultmap modifier";
1675  // Get a defaultmap kind
1676  Arg.push_back(getOpenMPSimpleClauseType(
1677  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok)));
1678  KLoc.push_back(Tok.getLocation());
1679  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1680  Tok.isNot(tok::annot_pragma_openmp_end))
1681  ConsumeAnyToken();
1682  } else {
1683  assert(Kind == OMPC_if);
1684  KLoc.push_back(Tok.getLocation());
1685  TentativeParsingAction TPA(*this);
1686  Arg.push_back(parseOpenMPDirectiveKind(*this));
1687  if (Arg.back() != OMPD_unknown) {
1688  ConsumeToken();
1689  if (Tok.is(tok::colon) && getLangOpts().OpenMP > 40) {
1690  TPA.Commit();
1691  DelimLoc = ConsumeToken();
1692  } else {
1693  TPA.Revert();
1694  Arg.back() = OMPD_unknown;
1695  }
1696  } else {
1697  TPA.Revert();
1698  }
1699  }
1700 
1701  bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) ||
1702  (Kind == OMPC_dist_schedule && DelimLoc.isValid()) ||
1703  Kind == OMPC_if;
1704  if (NeedAnExpression) {
1705  SourceLocation ELoc = Tok.getLocation();
1706  ExprResult LHS(ParseCastExpression(false, false, NotTypeCast));
1707  Val = ParseRHSOfBinaryExpression(LHS, prec::Conditional);
1708  Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc);
1709  }
1710 
1711  // Parse ')'.
1712  SourceLocation RLoc = Tok.getLocation();
1713  if (!T.consumeClose())
1714  RLoc = T.getCloseLocation();
1715 
1716  if (NeedAnExpression && Val.isInvalid())
1717  return nullptr;
1718 
1719  if (ParseOnly)
1720  return nullptr;
1721  return Actions.ActOnOpenMPSingleExprWithArgClause(
1722  Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc, RLoc);
1723 }
1724 
1725 static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec,
1726  UnqualifiedId &ReductionId) {
1727  if (ReductionIdScopeSpec.isEmpty()) {
1728  auto OOK = OO_None;
1729  switch (P.getCurToken().getKind()) {
1730  case tok::plus:
1731  OOK = OO_Plus;
1732  break;
1733  case tok::minus:
1734  OOK = OO_Minus;
1735  break;
1736  case tok::star:
1737  OOK = OO_Star;
1738  break;
1739  case tok::amp:
1740  OOK = OO_Amp;
1741  break;
1742  case tok::pipe:
1743  OOK = OO_Pipe;
1744  break;
1745  case tok::caret:
1746  OOK = OO_Caret;
1747  break;
1748  case tok::ampamp:
1749  OOK = OO_AmpAmp;
1750  break;
1751  case tok::pipepipe:
1752  OOK = OO_PipePipe;
1753  break;
1754  default:
1755  break;
1756  }
1757  if (OOK != OO_None) {
1758  SourceLocation OpLoc = P.ConsumeToken();
1759  SourceLocation SymbolLocations[] = {OpLoc, OpLoc, SourceLocation()};
1760  ReductionId.setOperatorFunctionId(OpLoc, OOK, SymbolLocations);
1761  return false;
1762  }
1763  }
1764  return P.ParseUnqualifiedId(ReductionIdScopeSpec, /*EnteringContext*/ false,
1765  /*AllowDestructorName*/ false,
1766  /*AllowConstructorName*/ false,
1767  /*AllowDeductionGuide*/ false,
1768  nullptr, nullptr, ReductionId);
1769 }
1770 
1771 /// Parses clauses with list.
1775  OpenMPVarListDataTy &Data) {
1776  UnqualifiedId UnqualifiedReductionId;
1777  bool InvalidReductionId = false;
1778  bool MapTypeModifierSpecified = false;
1779 
1780  // Parse '('.
1781  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1782  if (T.expectAndConsume(diag::err_expected_lparen_after,
1783  getOpenMPClauseName(Kind)))
1784  return true;
1785 
1786  bool NeedRParenForLinear = false;
1787  BalancedDelimiterTracker LinearT(*this, tok::l_paren,
1788  tok::annot_pragma_openmp_end);
1789  // Handle reduction-identifier for reduction clause.
1790  if (Kind == OMPC_reduction || Kind == OMPC_task_reduction ||
1791  Kind == OMPC_in_reduction) {
1792  ColonProtectionRAIIObject ColonRAII(*this);
1793  if (getLangOpts().CPlusPlus)
1794  ParseOptionalCXXScopeSpecifier(Data.ReductionIdScopeSpec,
1795  /*ObjectType=*/nullptr,
1796  /*EnteringContext=*/false);
1797  InvalidReductionId = ParseReductionId(*this, Data.ReductionIdScopeSpec,
1798  UnqualifiedReductionId);
1799  if (InvalidReductionId) {
1800  SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
1801  StopBeforeMatch);
1802  }
1803  if (Tok.is(tok::colon))
1804  Data.ColonLoc = ConsumeToken();
1805  else
1806  Diag(Tok, diag::warn_pragma_expected_colon) << "reduction identifier";
1807  if (!InvalidReductionId)
1808  Data.ReductionId =
1809  Actions.GetNameFromUnqualifiedId(UnqualifiedReductionId);
1810  } else if (Kind == OMPC_depend) {
1811  // Handle dependency type for depend clause.
1812  ColonProtectionRAIIObject ColonRAII(*this);
1813  Data.DepKind =
1815  Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : ""));
1816  Data.DepLinMapLoc = Tok.getLocation();
1817 
1818  if (Data.DepKind == OMPC_DEPEND_unknown) {
1819  SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
1820  StopBeforeMatch);
1821  } else {
1822  ConsumeToken();
1823  // Special processing for depend(source) clause.
1824  if (DKind == OMPD_ordered && Data.DepKind == OMPC_DEPEND_source) {
1825  // Parse ')'.
1826  T.consumeClose();
1827  return false;
1828  }
1829  }
1830  if (Tok.is(tok::colon)) {
1831  Data.ColonLoc = ConsumeToken();
1832  } else {
1833  Diag(Tok, DKind == OMPD_ordered ? diag::warn_pragma_expected_colon_r_paren
1834  : diag::warn_pragma_expected_colon)
1835  << "dependency type";
1836  }
1837  } else if (Kind == OMPC_linear) {
1838  // Try to parse modifier if any.
1839  if (Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::l_paren)) {
1840  Data.LinKind = static_cast<OpenMPLinearClauseKind>(
1841  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)));
1842  Data.DepLinMapLoc = ConsumeToken();
1843  LinearT.consumeOpen();
1844  NeedRParenForLinear = true;
1845  }
1846  } else if (Kind == OMPC_map) {
1847  // Handle map type for map clause.
1848  ColonProtectionRAIIObject ColonRAII(*this);
1849 
1850  /// The map clause modifier token can be either a identifier or the C++
1851  /// delete keyword.
1852  auto &&IsMapClauseModifierToken = [](const Token &Tok) -> bool {
1853  return Tok.isOneOf(tok::identifier, tok::kw_delete);
1854  };
1855 
1856  // The first identifier may be a list item, a map-type or a
1857  // map-type-modifier. The map modifier can also be delete which has the same
1858  // spelling of the C++ delete keyword.
1859  Data.MapType =
1860  IsMapClauseModifierToken(Tok)
1861  ? static_cast<OpenMPMapClauseKind>(
1862  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)))
1863  : OMPC_MAP_unknown;
1864  Data.DepLinMapLoc = Tok.getLocation();
1865  bool ColonExpected = false;
1866 
1867  if (IsMapClauseModifierToken(Tok)) {
1868  if (PP.LookAhead(0).is(tok::colon)) {
1869  if (Data.MapType == OMPC_MAP_unknown)
1870  Diag(Tok, diag::err_omp_unknown_map_type);
1871  else if (Data.MapType == OMPC_MAP_always)
1872  Diag(Tok, diag::err_omp_map_type_missing);
1873  ConsumeToken();
1874  } else if (PP.LookAhead(0).is(tok::comma)) {
1875  if (IsMapClauseModifierToken(PP.LookAhead(1)) &&
1876  PP.LookAhead(2).is(tok::colon)) {
1877  Data.MapTypeModifier = Data.MapType;
1878  if (Data.MapTypeModifier != OMPC_MAP_always) {
1879  Diag(Tok, diag::err_omp_unknown_map_type_modifier);
1881  } else {
1882  MapTypeModifierSpecified = true;
1883  }
1884 
1885  ConsumeToken();
1886  ConsumeToken();
1887 
1888  Data.MapType =
1889  IsMapClauseModifierToken(Tok)
1890  ? static_cast<OpenMPMapClauseKind>(
1891  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)))
1892  : OMPC_MAP_unknown;
1893  if (Data.MapType == OMPC_MAP_unknown ||
1894  Data.MapType == OMPC_MAP_always)
1895  Diag(Tok, diag::err_omp_unknown_map_type);
1896  ConsumeToken();
1897  } else {
1898  Data.MapType = OMPC_MAP_tofrom;
1899  Data.IsMapTypeImplicit = true;
1900  }
1901  } else if (IsMapClauseModifierToken(PP.LookAhead(0))) {
1902  if (PP.LookAhead(1).is(tok::colon)) {
1903  Data.MapTypeModifier = Data.MapType;
1904  if (Data.MapTypeModifier != OMPC_MAP_always) {
1905  Diag(Tok, diag::err_omp_unknown_map_type_modifier);
1907  } else {
1908  MapTypeModifierSpecified = true;
1909  }
1910 
1911  ConsumeToken();
1912 
1913  Data.MapType =
1914  IsMapClauseModifierToken(Tok)
1915  ? static_cast<OpenMPMapClauseKind>(
1916  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)))
1917  : OMPC_MAP_unknown;
1918  if (Data.MapType == OMPC_MAP_unknown ||
1919  Data.MapType == OMPC_MAP_always)
1920  Diag(Tok, diag::err_omp_unknown_map_type);
1921  ConsumeToken();
1922  } else {
1923  Data.MapType = OMPC_MAP_tofrom;
1924  Data.IsMapTypeImplicit = true;
1925  }
1926  } else {
1927  Data.MapType = OMPC_MAP_tofrom;
1928  Data.IsMapTypeImplicit = true;
1929  }
1930  } else {
1931  Data.MapType = OMPC_MAP_tofrom;
1932  Data.IsMapTypeImplicit = true;
1933  }
1934 
1935  if (Tok.is(tok::colon))
1936  Data.ColonLoc = ConsumeToken();
1937  else if (ColonExpected)
1938  Diag(Tok, diag::warn_pragma_expected_colon) << "map type";
1939  }
1940 
1941  bool IsComma =
1942  (Kind != OMPC_reduction && Kind != OMPC_task_reduction &&
1943  Kind != OMPC_in_reduction && Kind != OMPC_depend && Kind != OMPC_map) ||
1944  (Kind == OMPC_reduction && !InvalidReductionId) ||
1945  (Kind == OMPC_map && Data.MapType != OMPC_MAP_unknown &&
1946  (!MapTypeModifierSpecified ||
1947  Data.MapTypeModifier == OMPC_MAP_always)) ||
1948  (Kind == OMPC_depend && Data.DepKind != OMPC_DEPEND_unknown);
1949  const bool MayHaveTail = (Kind == OMPC_linear || Kind == OMPC_aligned);
1950  while (IsComma || (Tok.isNot(tok::r_paren) && Tok.isNot(tok::colon) &&
1951  Tok.isNot(tok::annot_pragma_openmp_end))) {
1952  ColonProtectionRAIIObject ColonRAII(*this, MayHaveTail);
1953  // Parse variable
1954  ExprResult VarExpr =
1955  Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
1956  if (VarExpr.isUsable()) {
1957  Vars.push_back(VarExpr.get());
1958  } else {
1959  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1960  StopBeforeMatch);
1961  }
1962  // Skip ',' if any
1963  IsComma = Tok.is(tok::comma);
1964  if (IsComma)
1965  ConsumeToken();
1966  else if (Tok.isNot(tok::r_paren) &&
1967  Tok.isNot(tok::annot_pragma_openmp_end) &&
1968  (!MayHaveTail || Tok.isNot(tok::colon)))
1969  Diag(Tok, diag::err_omp_expected_punc)
1970  << ((Kind == OMPC_flush) ? getOpenMPDirectiveName(OMPD_flush)
1971  : getOpenMPClauseName(Kind))
1972  << (Kind == OMPC_flush);
1973  }
1974 
1975  // Parse ')' for linear clause with modifier.
1976  if (NeedRParenForLinear)
1977  LinearT.consumeClose();
1978 
1979  // Parse ':' linear-step (or ':' alignment).
1980  const bool MustHaveTail = MayHaveTail && Tok.is(tok::colon);
1981  if (MustHaveTail) {
1982  Data.ColonLoc = Tok.getLocation();
1983  SourceLocation ELoc = ConsumeToken();
1984  ExprResult Tail = ParseAssignmentExpression();
1985  Tail = Actions.ActOnFinishFullExpr(Tail.get(), ELoc);
1986  if (Tail.isUsable())
1987  Data.TailExpr = Tail.get();
1988  else
1989  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1990  StopBeforeMatch);
1991  }
1992 
1993  // Parse ')'.
1994  Data.RLoc = Tok.getLocation();
1995  if (!T.consumeClose())
1996  Data.RLoc = T.getCloseLocation();
1997  return (Kind == OMPC_depend && Data.DepKind != OMPC_DEPEND_unknown &&
1998  Vars.empty()) ||
1999  (Kind != OMPC_depend && Kind != OMPC_map && Vars.empty()) ||
2000  (MustHaveTail && !Data.TailExpr) || InvalidReductionId;
2001 }
2002 
2003 /// Parsing of OpenMP clause 'private', 'firstprivate', 'lastprivate',
2004 /// 'shared', 'copyin', 'copyprivate', 'flush', 'reduction', 'task_reduction' or
2005 /// 'in_reduction'.
2006 ///
2007 /// private-clause:
2008 /// 'private' '(' list ')'
2009 /// firstprivate-clause:
2010 /// 'firstprivate' '(' list ')'
2011 /// lastprivate-clause:
2012 /// 'lastprivate' '(' list ')'
2013 /// shared-clause:
2014 /// 'shared' '(' list ')'
2015 /// linear-clause:
2016 /// 'linear' '(' linear-list [ ':' linear-step ] ')'
2017 /// aligned-clause:
2018 /// 'aligned' '(' list [ ':' alignment ] ')'
2019 /// reduction-clause:
2020 /// 'reduction' '(' reduction-identifier ':' list ')'
2021 /// task_reduction-clause:
2022 /// 'task_reduction' '(' reduction-identifier ':' list ')'
2023 /// in_reduction-clause:
2024 /// 'in_reduction' '(' reduction-identifier ':' list ')'
2025 /// copyprivate-clause:
2026 /// 'copyprivate' '(' list ')'
2027 /// flush-clause:
2028 /// 'flush' '(' list ')'
2029 /// depend-clause:
2030 /// 'depend' '(' in | out | inout : list | source ')'
2031 /// map-clause:
2032 /// 'map' '(' [ [ always , ]
2033 /// to | from | tofrom | alloc | release | delete ':' ] list ')';
2034 /// to-clause:
2035 /// 'to' '(' list ')'
2036 /// from-clause:
2037 /// 'from' '(' list ')'
2038 /// use_device_ptr-clause:
2039 /// 'use_device_ptr' '(' list ')'
2040 /// is_device_ptr-clause:
2041 /// 'is_device_ptr' '(' list ')'
2042 ///
2043 /// For 'linear' clause linear-list may have the following forms:
2044 /// list
2045 /// modifier(list)
2046 /// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++).
2047 OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind,
2049  bool ParseOnly) {
2050  SourceLocation Loc = Tok.getLocation();
2051  SourceLocation LOpen = ConsumeToken();
2053  OpenMPVarListDataTy Data;
2054 
2055  if (ParseOpenMPVarList(DKind, Kind, Vars, Data))
2056  return nullptr;
2057 
2058  if (ParseOnly)
2059  return nullptr;
2060  return Actions.ActOnOpenMPVarListClause(
2061  Kind, Vars, Data.TailExpr, Loc, LOpen, Data.ColonLoc, Data.RLoc,
2062  Data.ReductionIdScopeSpec, Data.ReductionId, Data.DepKind, Data.LinKind,
2063  Data.MapTypeModifier, Data.MapType, Data.IsMapTypeImplicit,
2064  Data.DepLinMapLoc);
2065 }
2066 
OpenMPDependClauseKind DepKind
Definition: Parser.h:2871
Defines the clang::ASTContext interface.
ExprResult ActOnOpenMPIdExpression(Scope *CurScope, CXXScopeSpec &ScopeSpec, const DeclarationNameInfo &Id)
Called on correct id-expression from the &#39;#pragma omp threadprivate&#39;.
static DiagnosticBuilder Diag(DiagnosticsEngine *Diags, const LangOptions &Features, FullSourceLoc TokLoc, const char *TokBegin, const char *TokRangeBegin, const char *TokRangeEnd, unsigned DiagID)
Produce a diagnostic highlighting some portion of a literal.
PtrTy get() const
Definition: Ownership.h:81
ParseScope - Introduces a new scope for parsing.
Definition: Parser.h:956
A (possibly-)qualified type.
Definition: Type.h:642
DeclarationNameInfo ReductionId
Definition: Parser.h:2870
static OpenMPDirectiveKind parseOpenMPDirectiveKind(Parser &P)
Definition: ParseOpenMP.cpp:83
const Token & LookAhead(unsigned N)
Peeks ahead N tokens and returns that token without consuming any tokens.
bool is(tok::TokenKind K) const
is/isNot - Predicates to check if this token is a specific kind, as in "if (Tok.is(tok::l_brace)) {...
Definition: Token.h:95
bool isEmpty() const
No scope specifier.
Definition: DeclSpec.h:189
iterator end()
Definition: DeclGroup.h:106
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:87
StringRef P
The base class of the type hierarchy.
Definition: Type.h:1415
SourceLocation getCloseLocation() const
This indicates that the scope corresponds to a function, which means that labels are set here...
Definition: Scope.h:47
bool isAllowedClauseForDirective(OpenMPDirectiveKind DKind, OpenMPClauseKind CKind)
static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec, UnqualifiedId &ReductionId)
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:98
void ActOnExitFunctionContext()
Definition: SemaDecl.cpp:1310
Wrapper for void* pointer.
Definition: Ownership.h:51
Parser - This implements a parser for the C family of languages.
Definition: Parser.h:57
bool isEmpty() const
Evaluates true when this declaration name is empty.
bool CheckOpenMPLinearModifier(OpenMPLinearClauseKind LinKind, SourceLocation LinLoc)
Checks correctness of linear modifiers.
Represents a variable declaration or definition.
Definition: Decl.h:812
ActionResult< Stmt * > StmtResult
Definition: Ownership.h:268
TypeSpecifierType
Specifies the kind of type.
Definition: Specifiers.h:45
RAII object used to temporarily allow the C++ &#39;this&#39; expression to be used, with the given qualifiers...
Definition: Sema.h:5096
RAII object that makes sure paren/bracket/brace count is correct after declaration/statement parsing...
bool isAnnotation() const
Return true if this is any of tok::annot_* kind tokens.
Definition: Token.h:118
ColonProtectionRAIIObject - This sets the Parser::ColonIsSacred bool and restores it when destroyed...
tok::TokenKind getKind() const
Definition: Token.h:90
bool SkipUntil(tok::TokenKind T, SkipUntilFlags Flags=static_cast< SkipUntilFlags >(0))
SkipUntil - Read tokens until we get to the specified token, then consume it (unless StopBeforeMatch ...
Definition: Parser.h:1050
OpenMPLinearClauseKind LinKind
Definition: Parser.h:2872
Base wrapper for a particular "section" of type source info.
Definition: TypeLoc.h:57
Represents a struct/union/class.
Definition: Decl.h:3589
const char * getOpenMPClauseName(OpenMPClauseKind Kind)
Definition: OpenMPKinds.cpp:62
One of these records is kept for each identifier that is lexed.
OpenMPLinearClauseKind
OpenMP attributes for &#39;linear&#39; clause.
Definition: OpenMPKinds.h:84
Token - This structure provides full information about a lexed token.
Definition: Token.h:35
RAII class that helps handle the parsing of an open/close delimiter pair, such as braces { ...
Represents a C++ unqualified-id that has been parsed.
Definition: DeclSpec.h:920
PtrTy get() const
Definition: Ownership.h:174
bool isNot(T Kind) const
Definition: FormatToken.h:323
StringRef getSpelling(SourceLocation loc, SmallVectorImpl< char > &buffer, bool *invalid=nullptr) const
Return the &#39;spelling&#39; of the token at the given location; does not go up to the spelling location or ...
const FormatToken & Tok
StmtResult StmtError()
Definition: Ownership.h:284
OpenMPClauseKind getOpenMPClauseKind(llvm::StringRef Str)
iterator begin()
Definition: DeclGroup.h:100
static bool parseDeclareSimdClauses(Parser &P, OMPDeclareSimdDeclAttr::BranchStateTy &BS, ExprResult &SimdLen, SmallVectorImpl< Expr *> &Uniforms, SmallVectorImpl< Expr *> &Aligneds, SmallVectorImpl< Expr *> &Alignments, SmallVectorImpl< Expr *> &Linears, SmallVectorImpl< unsigned > &LinModifiers, SmallVectorImpl< Expr *> &Steps)
Parses clauses for &#39;declare simd&#39; directive.
Represents a C++ nested-name-specifier or a global scope specifier.
Definition: DeclSpec.h:63
Sema - This implements semantic analysis and AST building for C.
Definition: Sema.h:278
bool isOneOf(A K1, B K2) const
Definition: FormatToken.h:316
A RAII object to enter scope of a compound statement.
Definition: Sema.h:3694
DeclarationNameTable DeclarationNames
Definition: ASTContext.h:568
OpenMPMapClauseKind MapTypeModifier
Definition: Parser.h:2873
This is the scope of OpenMP executable directive.
Definition: Scope.h:107
Sema & getActions() const
Definition: Parser.h:369
bool ParseUnqualifiedId(CXXScopeSpec &SS, bool EnteringContext, bool AllowDestructorName, bool AllowConstructorName, bool AllowDeductionGuide, ParsedType ObjectType, SourceLocation *TemplateKWLoc, UnqualifiedId &Result)
Parse a C++ unqualified-id (or a C identifier), which describes the name of an entity.
const Token & getCurToken() const
Definition: Parser.h:372
OpenMPDirectiveKindEx
Definition: ParseOpenMP.cpp:29
SourceLocation getLocation() const
Return a source location identifier for the specified offset in the current file. ...
Definition: Token.h:124
OpenMPClauseKind
OpenMP clauses.
Definition: OpenMPKinds.h:33
DeclContext * getDeclContext()
Definition: DeclBase.h:427
This is a compound statement scope.
Definition: Scope.h:130
Preprocessor & getPreprocessor() const
Definition: Parser.h:368
bool isInvalid() const
Definition: Ownership.h:170
SourceLocation getOpenLocation() const
bool isUsable() const
Definition: Ownership.h:171
bool isNull() const
Return true if this QualType doesn&#39;t point to a type yet.
Definition: Type.h:707
A class for parsing a DeclSpec.
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:226
Kind
ActionResult - This structure is used while parsing/acting on expressions, stmts, etc...
Definition: Ownership.h:157
ASTContext & getASTContext() const
Definition: Sema.h:1227
Encodes a location in the source.
OpenMPDependClauseKind
OpenMP attributes for &#39;depend&#39; clause.
Definition: OpenMPKinds.h:76
bool is(tok::TokenKind Kind) const
Definition: FormatToken.h:307
bool ParseOpenMPVarList(OpenMPDirectiveKind DKind, OpenMPClauseKind Kind, SmallVectorImpl< Expr *> &Vars, OpenMPVarListDataTy &Data)
Parses clauses with list.
static unsigned getOpenMPDirectiveKindEx(StringRef S)
Definition: ParseOpenMP.cpp:65
IdentifierInfo * getIdentifierInfo() const
Definition: Token.h:177
OpenMPDirectiveKind
OpenMP directives.
Definition: OpenMPKinds.h:23
This is a basic class for representing single OpenMP clause.
Definition: OpenMPClause.h:51
Scope * getCurScope() const
Definition: Parser.h:373
ExprResult ParseOpenMPParensExpr(StringRef ClauseName, SourceLocation &RLoc)
Parses simple expression in parens for single-expression clauses of OpenMP constructs.
StringRef getName() const
Return the actual identifier string.
bool isNot(tok::TokenKind K) const
Definition: Token.h:96
Dataflow Directional Tag Classes.
bool isValid() const
Return true if this is a valid SourceLocation object.
bool expectAndConsume(unsigned DiagID=diag::err_expected, const char *Msg="", tok::TokenKind SkipToTok=tok::unknown)
Definition: Parser.cpp:2256
OverloadedOperatorKind
Enumeration specifying the different kinds of C++ overloaded operators.
Definition: OperatorKinds.h:22
This is the scope of some OpenMP simd directive.
Definition: Scope.h:115
bool isFunctionOrFunctionTemplate() const
Whether this declaration is a function or function template.
Definition: DeclBase.h:1011
This is a scope that corresponds to the template parameters of a C++ template.
Definition: Scope.h:77
The name of a declaration.
bool isOpenMPSimdDirective(OpenMPDirectiveKind DKind)
Checks if the specified directive is a simd directive.
Data used for parsing list of variables in OpenMP clauses.
Definition: Parser.h:2865
DeclarationNameInfo - A collector data type for bundling together a DeclarationName and the correspnd...
static const TST TST_unspecified
Definition: DeclSpec.h:272
Not an overloaded operator.
Definition: OperatorKinds.h:23
unsigned getOpenMPSimpleClauseType(OpenMPClauseKind Kind, llvm::StringRef Str)
QualType getCanonicalTypeInternal() const
Definition: Type.h:2361
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID)
Definition: Parser.cpp:73
This file defines OpenMP AST classes for executable directives and clauses.
void setOperatorFunctionId(SourceLocation OperatorLoc, OverloadedOperatorKind Op, SourceLocation SymbolLocations[3])
Specify that this unqualified-id was parsed as an operator-function-id.
Definition: DeclSpec.cpp:1303
OpenMPDirectiveKind getOpenMPDirectiveKind(llvm::StringRef Str)
const char * getOpenMPDirectiveName(OpenMPDirectiveKind Kind)
Definition: OpenMPKinds.cpp:31
This is a scope that can contain a declaration.
Definition: Scope.h:59
SourceLocation ConsumeToken()
ConsumeToken - Consume the current &#39;peek token&#39; and lex the next one.
Definition: Parser.h:411
OpenMPMapClauseKind
OpenMP mapping kind for &#39;map&#39; clause.
Definition: OpenMPKinds.h:92
static DeclarationName parseOpenMPReductionId(Parser &P)
This is the scope of some OpenMP loop directive.
Definition: Scope.h:110
ExprResult ExprError()
Definition: Ownership.h:283
QualType getType() const
Definition: Decl.h:647
bool isOpenMPLoopDirective(OpenMPDirectiveKind DKind)
Checks if the specified directive is a directive with an associated loop construct.
A trivial tuple used to represent a source range.
This represents a decl that may have a name.
Definition: Decl.h:248
Directive - Abstract class representing a parsed verify directive.
SourceLocation getBegin() const
VerifyDiagnosticConsumer::Directive Directive
SourceLocation getLocation() const
Definition: DeclBase.h:418
OpenMPMapClauseKind MapType
Definition: Parser.h:2874
bool isCXXInstanceMember() const
Determine whether the given declaration is an instance member of a C++ class.
Definition: Decl.cpp:1738
Stop skipping at specified token, but don&#39;t skip the token itself.
Definition: Parser.h:1032
SourceLocation getEndLoc() const
Definition: Token.h:151