clang  6.0.0svn
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 /// \brief 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, OMPD_teams_distribute_parallel_for },
118  { OMPD_teams_distribute_parallel_for, OMPD_simd, OMPD_teams_distribute_parallel_for_simd },
119  { OMPD_target, OMPD_teams, OMPD_target_teams },
120  { OMPD_target_teams, OMPD_distribute, OMPD_target_teams_distribute },
121  { OMPD_target_teams_distribute, OMPD_parallel, OMPD_target_teams_distribute_parallel },
122  { OMPD_target_teams_distribute, OMPD_simd, OMPD_target_teams_distribute_simd },
123  { OMPD_target_teams_distribute_parallel, OMPD_for, OMPD_target_teams_distribute_parallel_for },
124  { OMPD_target_teams_distribute_parallel_for, OMPD_simd, OMPD_target_teams_distribute_parallel_for_simd }
125  };
126  enum { CancellationPoint = 0, DeclareReduction = 1, TargetData = 2 };
127  auto Tok = P.getCurToken();
128  unsigned DKind =
129  Tok.isAnnotation()
130  ? static_cast<unsigned>(OMPD_unknown)
132  if (DKind == OMPD_unknown)
133  return OMPD_unknown;
134 
135  for (unsigned i = 0; i < llvm::array_lengthof(F); ++i) {
136  if (DKind != F[i][0])
137  continue;
138 
139  Tok = P.getPreprocessor().LookAhead(0);
140  unsigned SDKind =
141  Tok.isAnnotation()
142  ? static_cast<unsigned>(OMPD_unknown)
144  if (SDKind == OMPD_unknown)
145  continue;
146 
147  if (SDKind == F[i][1]) {
148  P.ConsumeToken();
149  DKind = F[i][2];
150  }
151  }
152  return DKind < OMPD_unknown ? static_cast<OpenMPDirectiveKind>(DKind)
153  : OMPD_unknown;
154 }
155 
157  Token Tok = P.getCurToken();
158  Sema &Actions = P.getActions();
160  // Allow to use 'operator' keyword for C++ operators
161  bool WithOperator = false;
162  if (Tok.is(tok::kw_operator)) {
163  P.ConsumeToken();
164  Tok = P.getCurToken();
165  WithOperator = true;
166  }
167  switch (Tok.getKind()) {
168  case tok::plus: // '+'
169  OOK = OO_Plus;
170  break;
171  case tok::minus: // '-'
172  OOK = OO_Minus;
173  break;
174  case tok::star: // '*'
175  OOK = OO_Star;
176  break;
177  case tok::amp: // '&'
178  OOK = OO_Amp;
179  break;
180  case tok::pipe: // '|'
181  OOK = OO_Pipe;
182  break;
183  case tok::caret: // '^'
184  OOK = OO_Caret;
185  break;
186  case tok::ampamp: // '&&'
187  OOK = OO_AmpAmp;
188  break;
189  case tok::pipepipe: // '||'
190  OOK = OO_PipePipe;
191  break;
192  case tok::identifier: // identifier
193  if (!WithOperator)
194  break;
195  LLVM_FALLTHROUGH;
196  default:
197  P.Diag(Tok.getLocation(), diag::err_omp_expected_reduction_identifier);
198  P.SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
200  return DeclarationName();
201  }
202  P.ConsumeToken();
203  auto &DeclNames = Actions.getASTContext().DeclarationNames;
204  return OOK == OO_None ? DeclNames.getIdentifier(Tok.getIdentifierInfo())
205  : DeclNames.getCXXOperatorName(OOK);
206 }
207 
208 /// \brief Parse 'omp declare reduction' construct.
209 ///
210 /// declare-reduction-directive:
211 /// annot_pragma_openmp 'declare' 'reduction'
212 /// '(' <reduction_id> ':' <type> {',' <type>} ':' <expression> ')'
213 /// ['initializer' '(' ('omp_priv' '=' <expression>)|<function_call> ')']
214 /// annot_pragma_openmp_end
215 /// <reduction_id> is either a base language identifier or one of the following
216 /// operators: '+', '-', '*', '&', '|', '^', '&&' and '||'.
217 ///
219 Parser::ParseOpenMPDeclareReductionDirective(AccessSpecifier AS) {
220  // Parse '('.
221  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
222  if (T.expectAndConsume(diag::err_expected_lparen_after,
223  getOpenMPDirectiveName(OMPD_declare_reduction))) {
224  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
225  return DeclGroupPtrTy();
226  }
227 
229  if (Name.isEmpty() && Tok.is(tok::annot_pragma_openmp_end))
230  return DeclGroupPtrTy();
231 
232  // Consume ':'.
233  bool IsCorrect = !ExpectAndConsume(tok::colon);
234 
235  if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
236  return DeclGroupPtrTy();
237 
238  IsCorrect = IsCorrect && !Name.isEmpty();
239 
240  if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) {
241  Diag(Tok.getLocation(), diag::err_expected_type);
242  IsCorrect = false;
243  }
244 
245  if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
246  return DeclGroupPtrTy();
247 
249  // Parse list of types until ':' token.
250  do {
251  ColonProtectionRAIIObject ColonRAII(*this);
252  SourceRange Range;
253  TypeResult TR = ParseTypeName(&Range, Declarator::PrototypeContext, AS);
254  if (TR.isUsable()) {
255  auto ReductionType =
256  Actions.ActOnOpenMPDeclareReductionType(Range.getBegin(), TR);
257  if (!ReductionType.isNull()) {
258  ReductionTypes.push_back(
259  std::make_pair(ReductionType, Range.getBegin()));
260  }
261  } else {
262  SkipUntil(tok::comma, tok::colon, tok::annot_pragma_openmp_end,
263  StopBeforeMatch);
264  }
265 
266  if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end))
267  break;
268 
269  // Consume ','.
270  if (ExpectAndConsume(tok::comma)) {
271  IsCorrect = false;
272  if (Tok.is(tok::annot_pragma_openmp_end)) {
273  Diag(Tok.getLocation(), diag::err_expected_type);
274  return DeclGroupPtrTy();
275  }
276  }
277  } while (Tok.isNot(tok::annot_pragma_openmp_end));
278 
279  if (ReductionTypes.empty()) {
280  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
281  return DeclGroupPtrTy();
282  }
283 
284  if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
285  return DeclGroupPtrTy();
286 
287  // Consume ':'.
288  if (ExpectAndConsume(tok::colon))
289  IsCorrect = false;
290 
291  if (Tok.is(tok::annot_pragma_openmp_end)) {
292  Diag(Tok.getLocation(), diag::err_expected_expression);
293  return DeclGroupPtrTy();
294  }
295 
296  DeclGroupPtrTy DRD = Actions.ActOnOpenMPDeclareReductionDirectiveStart(
297  getCurScope(), Actions.getCurLexicalContext(), Name, ReductionTypes, AS);
298 
299  // Parse <combiner> expression and then parse initializer if any for each
300  // correct type.
301  unsigned I = 0, E = ReductionTypes.size();
302  for (auto *D : DRD.get()) {
303  TentativeParsingAction TPA(*this);
304  ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope |
307  // Parse <combiner> expression.
308  Actions.ActOnOpenMPDeclareReductionCombinerStart(getCurScope(), D);
309  ExprResult CombinerResult =
310  Actions.ActOnFinishFullExpr(ParseAssignmentExpression().get(),
311  D->getLocation(), /*DiscardedValue=*/true);
312  Actions.ActOnOpenMPDeclareReductionCombinerEnd(D, CombinerResult.get());
313 
314  if (CombinerResult.isInvalid() && Tok.isNot(tok::r_paren) &&
315  Tok.isNot(tok::annot_pragma_openmp_end)) {
316  TPA.Commit();
317  IsCorrect = false;
318  break;
319  }
320  IsCorrect = !T.consumeClose() && IsCorrect && CombinerResult.isUsable();
321  ExprResult InitializerResult;
322  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
323  // Parse <initializer> expression.
324  if (Tok.is(tok::identifier) &&
325  Tok.getIdentifierInfo()->isStr("initializer"))
326  ConsumeToken();
327  else {
328  Diag(Tok.getLocation(), diag::err_expected) << "'initializer'";
329  TPA.Commit();
330  IsCorrect = false;
331  break;
332  }
333  // Parse '('.
334  BalancedDelimiterTracker T(*this, tok::l_paren,
335  tok::annot_pragma_openmp_end);
336  IsCorrect =
337  !T.expectAndConsume(diag::err_expected_lparen_after, "initializer") &&
338  IsCorrect;
339  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
340  ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope |
343  // Parse expression.
344  VarDecl *OmpPrivParm =
345  Actions.ActOnOpenMPDeclareReductionInitializerStart(getCurScope(),
346  D);
347  // Check if initializer is omp_priv <init_expr> or something else.
348  if (Tok.is(tok::identifier) &&
349  Tok.getIdentifierInfo()->isStr("omp_priv")) {
350  ConsumeToken();
351  ParseOpenMPReductionInitializerForDecl(OmpPrivParm);
352  } else {
353  InitializerResult = Actions.ActOnFinishFullExpr(
354  ParseAssignmentExpression().get(), D->getLocation(),
355  /*DiscardedValue=*/true);
356  }
357  Actions.ActOnOpenMPDeclareReductionInitializerEnd(
358  D, InitializerResult.get(), OmpPrivParm);
359  if (InitializerResult.isInvalid() && Tok.isNot(tok::r_paren) &&
360  Tok.isNot(tok::annot_pragma_openmp_end)) {
361  TPA.Commit();
362  IsCorrect = false;
363  break;
364  }
365  IsCorrect =
366  !T.consumeClose() && IsCorrect && !InitializerResult.isInvalid();
367  }
368  }
369 
370  ++I;
371  // Revert parsing if not the last type, otherwise accept it, we're done with
372  // parsing.
373  if (I != E)
374  TPA.Revert();
375  else
376  TPA.Commit();
377  }
378  return Actions.ActOnOpenMPDeclareReductionDirectiveEnd(getCurScope(), DRD,
379  IsCorrect);
380 }
381 
382 void Parser::ParseOpenMPReductionInitializerForDecl(VarDecl *OmpPrivParm) {
383  // Parse declarator '=' initializer.
384  // If a '==' or '+=' is found, suggest a fixit to '='.
385  if (isTokenEqualOrEqualTypo()) {
386  ConsumeToken();
387 
388  if (Tok.is(tok::code_completion)) {
389  Actions.CodeCompleteInitializer(getCurScope(), OmpPrivParm);
390  Actions.FinalizeDeclaration(OmpPrivParm);
391  cutOffParsing();
392  return;
393  }
394 
395  ExprResult Init(ParseInitializer());
396 
397  if (Init.isInvalid()) {
398  SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch);
399  Actions.ActOnInitializerError(OmpPrivParm);
400  } else {
401  Actions.AddInitializerToDecl(OmpPrivParm, Init.get(),
402  /*DirectInit=*/false);
403  }
404  } else if (Tok.is(tok::l_paren)) {
405  // Parse C++ direct initializer: '(' expression-list ')'
406  BalancedDelimiterTracker T(*this, tok::l_paren);
407  T.consumeOpen();
408 
409  ExprVector Exprs;
410  CommaLocsTy CommaLocs;
411 
412  if (ParseExpressionList(Exprs, CommaLocs, [this, OmpPrivParm, &Exprs] {
413  Actions.CodeCompleteConstructor(
414  getCurScope(), OmpPrivParm->getType()->getCanonicalTypeInternal(),
415  OmpPrivParm->getLocation(), Exprs);
416  })) {
417  Actions.ActOnInitializerError(OmpPrivParm);
418  SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch);
419  } else {
420  // Match the ')'.
421  T.consumeClose();
422 
423  assert(!Exprs.empty() && Exprs.size() - 1 == CommaLocs.size() &&
424  "Unexpected number of commas!");
425 
426  ExprResult Initializer = Actions.ActOnParenListExpr(
427  T.getOpenLocation(), T.getCloseLocation(), Exprs);
428  Actions.AddInitializerToDecl(OmpPrivParm, Initializer.get(),
429  /*DirectInit=*/true);
430  }
431  } else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
432  // Parse C++0x braced-init-list.
433  Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
434 
435  ExprResult Init(ParseBraceInitializer());
436 
437  if (Init.isInvalid()) {
438  Actions.ActOnInitializerError(OmpPrivParm);
439  } else {
440  Actions.AddInitializerToDecl(OmpPrivParm, Init.get(),
441  /*DirectInit=*/true);
442  }
443  } else {
444  Actions.ActOnUninitializedDecl(OmpPrivParm);
445  }
446 }
447 
448 namespace {
449 /// RAII that recreates function context for correct parsing of clauses of
450 /// 'declare simd' construct.
451 /// OpenMP, 2.8.2 declare simd Construct
452 /// The expressions appearing in the clauses of this directive are evaluated in
453 /// the scope of the arguments of the function declaration or definition.
454 class FNContextRAII final {
455  Parser &P;
456  Sema::CXXThisScopeRAII *ThisScope;
457  Parser::ParseScope *TempScope;
458  Parser::ParseScope *FnScope;
459  bool HasTemplateScope = false;
460  bool HasFunScope = false;
461  FNContextRAII() = delete;
462  FNContextRAII(const FNContextRAII &) = delete;
463  FNContextRAII &operator=(const FNContextRAII &) = delete;
464 
465 public:
466  FNContextRAII(Parser &P, Parser::DeclGroupPtrTy Ptr) : P(P) {
467  Decl *D = *Ptr.get().begin();
468  NamedDecl *ND = dyn_cast<NamedDecl>(D);
469  RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext());
470  Sema &Actions = P.getActions();
471 
472  // Allow 'this' within late-parsed attributes.
473  ThisScope = new Sema::CXXThisScopeRAII(Actions, RD, /*TypeQuals=*/0,
474  ND && ND->isCXXInstanceMember());
475 
476  // If the Decl is templatized, add template parameters to scope.
477  HasTemplateScope = D->isTemplateDecl();
478  TempScope =
479  new Parser::ParseScope(&P, Scope::TemplateParamScope, HasTemplateScope);
480  if (HasTemplateScope)
481  Actions.ActOnReenterTemplateScope(Actions.getCurScope(), D);
482 
483  // If the Decl is on a function, add function parameters to the scope.
484  HasFunScope = D->isFunctionOrFunctionTemplate();
485  FnScope = new Parser::ParseScope(
487  HasFunScope);
488  if (HasFunScope)
489  Actions.ActOnReenterFunctionContext(Actions.getCurScope(), D);
490  }
491  ~FNContextRAII() {
492  if (HasFunScope) {
494  FnScope->Exit(); // Pop scope, and remove Decls from IdResolver
495  }
496  if (HasTemplateScope)
497  TempScope->Exit();
498  delete FnScope;
499  delete TempScope;
500  delete ThisScope;
501  }
502 };
503 } // namespace
504 
505 /// Parses clauses for 'declare simd' directive.
506 /// clause:
507 /// 'inbranch' | 'notinbranch'
508 /// 'simdlen' '(' <expr> ')'
509 /// { 'uniform' '(' <argument_list> ')' }
510 /// { 'aligned '(' <argument_list> [ ':' <alignment> ] ')' }
511 /// { 'linear '(' <argument_list> [ ':' <step> ] ')' }
513  Parser &P, OMPDeclareSimdDeclAttr::BranchStateTy &BS, ExprResult &SimdLen,
515  SmallVectorImpl<Expr *> &Alignments, SmallVectorImpl<Expr *> &Linears,
516  SmallVectorImpl<unsigned> &LinModifiers, SmallVectorImpl<Expr *> &Steps) {
517  SourceRange BSRange;
518  const Token &Tok = P.getCurToken();
519  bool IsError = false;
520  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
521  if (Tok.isNot(tok::identifier))
522  break;
523  OMPDeclareSimdDeclAttr::BranchStateTy Out;
524  IdentifierInfo *II = Tok.getIdentifierInfo();
525  StringRef ClauseName = II->getName();
526  // Parse 'inranch|notinbranch' clauses.
527  if (OMPDeclareSimdDeclAttr::ConvertStrToBranchStateTy(ClauseName, Out)) {
528  if (BS != OMPDeclareSimdDeclAttr::BS_Undefined && BS != Out) {
529  P.Diag(Tok, diag::err_omp_declare_simd_inbranch_notinbranch)
530  << ClauseName
531  << OMPDeclareSimdDeclAttr::ConvertBranchStateTyToStr(BS) << BSRange;
532  IsError = true;
533  }
534  BS = Out;
535  BSRange = SourceRange(Tok.getLocation(), Tok.getEndLoc());
536  P.ConsumeToken();
537  } else if (ClauseName.equals("simdlen")) {
538  if (SimdLen.isUsable()) {
539  P.Diag(Tok, diag::err_omp_more_one_clause)
540  << getOpenMPDirectiveName(OMPD_declare_simd) << ClauseName << 0;
541  IsError = true;
542  }
543  P.ConsumeToken();
544  SourceLocation RLoc;
545  SimdLen = P.ParseOpenMPParensExpr(ClauseName, RLoc);
546  if (SimdLen.isInvalid())
547  IsError = true;
548  } else {
549  OpenMPClauseKind CKind = getOpenMPClauseKind(ClauseName);
550  if (CKind == OMPC_uniform || CKind == OMPC_aligned ||
551  CKind == OMPC_linear) {
553  auto *Vars = &Uniforms;
554  if (CKind == OMPC_aligned)
555  Vars = &Aligneds;
556  else if (CKind == OMPC_linear)
557  Vars = &Linears;
558 
559  P.ConsumeToken();
560  if (P.ParseOpenMPVarList(OMPD_declare_simd,
561  getOpenMPClauseKind(ClauseName), *Vars, Data))
562  IsError = true;
563  if (CKind == OMPC_aligned)
564  Alignments.append(Aligneds.size() - Alignments.size(), Data.TailExpr);
565  else if (CKind == OMPC_linear) {
567  Data.DepLinMapLoc))
568  Data.LinKind = OMPC_LINEAR_val;
569  LinModifiers.append(Linears.size() - LinModifiers.size(),
570  Data.LinKind);
571  Steps.append(Linears.size() - Steps.size(), Data.TailExpr);
572  }
573  } else
574  // TODO: add parsing of other clauses.
575  break;
576  }
577  // Skip ',' if any.
578  if (Tok.is(tok::comma))
579  P.ConsumeToken();
580  }
581  return IsError;
582 }
583 
584 /// Parse clauses for '#pragma omp declare simd'.
586 Parser::ParseOMPDeclareSimdClauses(Parser::DeclGroupPtrTy Ptr,
587  CachedTokens &Toks, SourceLocation Loc) {
588  PP.EnterToken(Tok);
589  PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true);
590  // Consume the previously pushed token.
591  ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
592 
593  FNContextRAII FnContext(*this, Ptr);
594  OMPDeclareSimdDeclAttr::BranchStateTy BS =
595  OMPDeclareSimdDeclAttr::BS_Undefined;
596  ExprResult Simdlen;
597  SmallVector<Expr *, 4> Uniforms;
598  SmallVector<Expr *, 4> Aligneds;
599  SmallVector<Expr *, 4> Alignments;
600  SmallVector<Expr *, 4> Linears;
601  SmallVector<unsigned, 4> LinModifiers;
603  bool IsError =
604  parseDeclareSimdClauses(*this, BS, Simdlen, Uniforms, Aligneds,
605  Alignments, Linears, LinModifiers, Steps);
606  // Need to check for extra tokens.
607  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
608  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
609  << getOpenMPDirectiveName(OMPD_declare_simd);
610  while (Tok.isNot(tok::annot_pragma_openmp_end))
611  ConsumeAnyToken();
612  }
613  // Skip the last annot_pragma_openmp_end.
614  SourceLocation EndLoc = ConsumeAnnotationToken();
615  if (!IsError) {
616  return Actions.ActOnOpenMPDeclareSimdDirective(
617  Ptr, BS, Simdlen.get(), Uniforms, Aligneds, Alignments, Linears,
618  LinModifiers, Steps, SourceRange(Loc, EndLoc));
619  }
620  return Ptr;
621 }
622 
623 /// \brief Parsing of declarative OpenMP directives.
624 ///
625 /// threadprivate-directive:
626 /// annot_pragma_openmp 'threadprivate' simple-variable-list
627 /// annot_pragma_openmp_end
628 ///
629 /// declare-reduction-directive:
630 /// annot_pragma_openmp 'declare' 'reduction' [...]
631 /// annot_pragma_openmp_end
632 ///
633 /// declare-simd-directive:
634 /// annot_pragma_openmp 'declare simd' {<clause> [,]}
635 /// annot_pragma_openmp_end
636 /// <function declaration/definition>
637 ///
638 Parser::DeclGroupPtrTy Parser::ParseOpenMPDeclarativeDirectiveWithExtDecl(
639  AccessSpecifier &AS, ParsedAttributesWithRange &Attrs,
640  DeclSpec::TST TagType, Decl *Tag) {
641  assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!");
642  ParenBraceBracketBalancer BalancerRAIIObj(*this);
643 
644  SourceLocation Loc = ConsumeAnnotationToken();
645  auto DKind = ParseOpenMPDirectiveKind(*this);
646 
647  switch (DKind) {
648  case OMPD_threadprivate: {
649  ConsumeToken();
650  ThreadprivateListParserHelper Helper(this);
651  if (!ParseOpenMPSimpleVarList(OMPD_threadprivate, Helper, true)) {
652  // The last seen token is annot_pragma_openmp_end - need to check for
653  // extra tokens.
654  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
655  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
656  << getOpenMPDirectiveName(OMPD_threadprivate);
657  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
658  }
659  // Skip the last annot_pragma_openmp_end.
660  ConsumeAnnotationToken();
661  return Actions.ActOnOpenMPThreadprivateDirective(Loc,
662  Helper.getIdentifiers());
663  }
664  break;
665  }
666  case OMPD_declare_reduction:
667  ConsumeToken();
668  if (auto Res = ParseOpenMPDeclareReductionDirective(AS)) {
669  // The last seen token is annot_pragma_openmp_end - need to check for
670  // extra tokens.
671  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
672  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
673  << getOpenMPDirectiveName(OMPD_declare_reduction);
674  while (Tok.isNot(tok::annot_pragma_openmp_end))
675  ConsumeAnyToken();
676  }
677  // Skip the last annot_pragma_openmp_end.
678  ConsumeAnnotationToken();
679  return Res;
680  }
681  break;
682  case OMPD_declare_simd: {
683  // The syntax is:
684  // { #pragma omp declare simd }
685  // <function-declaration-or-definition>
686  //
687  ConsumeToken();
688  CachedTokens Toks;
689  while(Tok.isNot(tok::annot_pragma_openmp_end)) {
690  Toks.push_back(Tok);
691  ConsumeAnyToken();
692  }
693  Toks.push_back(Tok);
694  ConsumeAnyToken();
695 
696  DeclGroupPtrTy Ptr;
697  if (Tok.is(tok::annot_pragma_openmp))
698  Ptr = ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs, TagType, Tag);
699  else if (Tok.isNot(tok::r_brace) && !isEofOrEom()) {
700  // Here we expect to see some function declaration.
701  if (AS == AS_none) {
703  MaybeParseCXX11Attributes(Attrs);
704  ParsingDeclSpec PDS(*this);
705  Ptr = ParseExternalDeclaration(Attrs, &PDS);
706  } else {
707  Ptr =
708  ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag);
709  }
710  }
711  if (!Ptr) {
712  Diag(Loc, diag::err_omp_decl_in_declare_simd);
713  return DeclGroupPtrTy();
714  }
715  return ParseOMPDeclareSimdClauses(Ptr, Toks, Loc);
716  }
717  case OMPD_declare_target: {
718  SourceLocation DTLoc = ConsumeAnyToken();
719  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
720  // OpenMP 4.5 syntax with list of entities.
722  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
723  OMPDeclareTargetDeclAttr::MapTypeTy MT =
724  OMPDeclareTargetDeclAttr::MT_To;
725  if (Tok.is(tok::identifier)) {
726  IdentifierInfo *II = Tok.getIdentifierInfo();
727  StringRef ClauseName = II->getName();
728  // Parse 'to|link' clauses.
729  if (!OMPDeclareTargetDeclAttr::ConvertStrToMapTypeTy(ClauseName,
730  MT)) {
731  Diag(Tok, diag::err_omp_declare_target_unexpected_clause)
732  << ClauseName;
733  break;
734  }
735  ConsumeToken();
736  }
737  auto Callback = [this, MT, &SameDirectiveDecls](
738  CXXScopeSpec &SS, DeclarationNameInfo NameInfo) {
739  Actions.ActOnOpenMPDeclareTargetName(getCurScope(), SS, NameInfo, MT,
740  SameDirectiveDecls);
741  };
742  if (ParseOpenMPSimpleVarList(OMPD_declare_target, Callback, true))
743  break;
744 
745  // Consume optional ','.
746  if (Tok.is(tok::comma))
747  ConsumeToken();
748  }
749  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
750  ConsumeAnyToken();
751  return DeclGroupPtrTy();
752  }
753 
754  // Skip the last annot_pragma_openmp_end.
755  ConsumeAnyToken();
756 
757  if (!Actions.ActOnStartOpenMPDeclareTargetDirective(DTLoc))
758  return DeclGroupPtrTy();
759 
760  DKind = ParseOpenMPDirectiveKind(*this);
761  while (DKind != OMPD_end_declare_target && DKind != OMPD_declare_target &&
762  Tok.isNot(tok::eof) && Tok.isNot(tok::r_brace)) {
763  DeclGroupPtrTy Ptr;
764  // Here we expect to see some function declaration.
765  if (AS == AS_none) {
767  MaybeParseCXX11Attributes(Attrs);
768  ParsingDeclSpec PDS(*this);
769  Ptr = ParseExternalDeclaration(Attrs, &PDS);
770  } else {
771  Ptr =
772  ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag);
773  }
774  if (Tok.isAnnotation() && Tok.is(tok::annot_pragma_openmp)) {
775  TentativeParsingAction TPA(*this);
776  ConsumeAnnotationToken();
777  DKind = ParseOpenMPDirectiveKind(*this);
778  if (DKind != OMPD_end_declare_target)
779  TPA.Revert();
780  else
781  TPA.Commit();
782  }
783  }
784 
785  if (DKind == OMPD_end_declare_target) {
786  ConsumeAnyToken();
787  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
788  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
789  << getOpenMPDirectiveName(OMPD_end_declare_target);
790  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
791  }
792  // Skip the last annot_pragma_openmp_end.
793  ConsumeAnyToken();
794  } else {
795  Diag(Tok, diag::err_expected_end_declare_target);
796  Diag(DTLoc, diag::note_matching) << "'#pragma omp declare target'";
797  }
798  Actions.ActOnFinishOpenMPDeclareTargetDirective();
799  return DeclGroupPtrTy();
800  }
801  case OMPD_unknown:
802  Diag(Tok, diag::err_omp_unknown_directive);
803  break;
804  case OMPD_parallel:
805  case OMPD_simd:
806  case OMPD_task:
807  case OMPD_taskyield:
808  case OMPD_barrier:
809  case OMPD_taskwait:
810  case OMPD_taskgroup:
811  case OMPD_flush:
812  case OMPD_for:
813  case OMPD_for_simd:
814  case OMPD_sections:
815  case OMPD_section:
816  case OMPD_single:
817  case OMPD_master:
818  case OMPD_ordered:
819  case OMPD_critical:
820  case OMPD_parallel_for:
821  case OMPD_parallel_for_simd:
822  case OMPD_parallel_sections:
823  case OMPD_atomic:
824  case OMPD_target:
825  case OMPD_teams:
826  case OMPD_cancellation_point:
827  case OMPD_cancel:
828  case OMPD_target_data:
829  case OMPD_target_enter_data:
830  case OMPD_target_exit_data:
831  case OMPD_target_parallel:
832  case OMPD_target_parallel_for:
833  case OMPD_taskloop:
834  case OMPD_taskloop_simd:
835  case OMPD_distribute:
836  case OMPD_end_declare_target:
837  case OMPD_target_update:
838  case OMPD_distribute_parallel_for:
839  case OMPD_distribute_parallel_for_simd:
840  case OMPD_distribute_simd:
841  case OMPD_target_parallel_for_simd:
842  case OMPD_target_simd:
843  case OMPD_teams_distribute:
844  case OMPD_teams_distribute_simd:
845  case OMPD_teams_distribute_parallel_for_simd:
846  case OMPD_teams_distribute_parallel_for:
847  case OMPD_target_teams:
848  case OMPD_target_teams_distribute:
849  case OMPD_target_teams_distribute_parallel_for:
850  case OMPD_target_teams_distribute_parallel_for_simd:
851  case OMPD_target_teams_distribute_simd:
852  Diag(Tok, diag::err_omp_unexpected_directive)
853  << getOpenMPDirectiveName(DKind);
854  break;
855  }
856  while (Tok.isNot(tok::annot_pragma_openmp_end))
857  ConsumeAnyToken();
858  ConsumeAnyToken();
859  return nullptr;
860 }
861 
862 /// \brief Parsing of declarative or executable OpenMP directives.
863 ///
864 /// threadprivate-directive:
865 /// annot_pragma_openmp 'threadprivate' simple-variable-list
866 /// annot_pragma_openmp_end
867 ///
868 /// declare-reduction-directive:
869 /// annot_pragma_openmp 'declare' 'reduction' '(' <reduction_id> ':'
870 /// <type> {',' <type>} ':' <expression> ')' ['initializer' '('
871 /// ('omp_priv' '=' <expression>|<function_call>) ')']
872 /// annot_pragma_openmp_end
873 ///
874 /// executable-directive:
875 /// annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' |
876 /// 'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] |
877 /// 'parallel for' | 'parallel sections' | 'task' | 'taskyield' |
878 /// 'barrier' | 'taskwait' | 'flush' | 'ordered' | 'atomic' |
879 /// 'for simd' | 'parallel for simd' | 'target' | 'target data' |
880 /// 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' |
881 /// 'distribute' | 'target enter data' | 'target exit data' |
882 /// 'target parallel' | 'target parallel for' |
883 /// 'target update' | 'distribute parallel for' |
884 /// 'distribute paralle for simd' | 'distribute simd' |
885 /// 'target parallel for simd' | 'target simd' |
886 /// 'teams distribute' | 'teams distribute simd' |
887 /// 'teams distribute parallel for simd' |
888 /// 'teams distribute parallel for' | 'target teams' |
889 /// 'target teams distribute' |
890 /// 'target teams distribute parallel for' |
891 /// 'target teams distribute parallel for simd' |
892 /// 'target teams distribute simd' {clause}
893 /// annot_pragma_openmp_end
894 ///
895 StmtResult Parser::ParseOpenMPDeclarativeOrExecutableDirective(
896  AllowedConstructsKind Allowed) {
897  assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!");
898  ParenBraceBracketBalancer BalancerRAIIObj(*this);
901  FirstClauses(OMPC_unknown + 1);
902  unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope |
904  SourceLocation Loc = ConsumeAnnotationToken(), EndLoc;
905  auto DKind = ParseOpenMPDirectiveKind(*this);
906  OpenMPDirectiveKind CancelRegion = OMPD_unknown;
907  // Name of critical directive.
908  DeclarationNameInfo DirName;
910  bool HasAssociatedStatement = true;
911  bool FlushHasClause = false;
912 
913  switch (DKind) {
914  case OMPD_threadprivate: {
915  if (Allowed != ACK_Any) {
916  Diag(Tok, diag::err_omp_immediate_directive)
917  << getOpenMPDirectiveName(DKind) << 0;
918  }
919  ConsumeToken();
920  ThreadprivateListParserHelper Helper(this);
921  if (!ParseOpenMPSimpleVarList(OMPD_threadprivate, Helper, false)) {
922  // The last seen token is annot_pragma_openmp_end - need to check for
923  // extra tokens.
924  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
925  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
926  << getOpenMPDirectiveName(OMPD_threadprivate);
927  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
928  }
929  DeclGroupPtrTy Res = Actions.ActOnOpenMPThreadprivateDirective(
930  Loc, Helper.getIdentifiers());
931  Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
932  }
933  SkipUntil(tok::annot_pragma_openmp_end);
934  break;
935  }
936  case OMPD_declare_reduction:
937  ConsumeToken();
938  if (auto Res = ParseOpenMPDeclareReductionDirective(/*AS=*/AS_none)) {
939  // The last seen token is annot_pragma_openmp_end - need to check for
940  // extra tokens.
941  if (Tok.isNot(tok::annot_pragma_openmp_end)) {
942  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
943  << getOpenMPDirectiveName(OMPD_declare_reduction);
944  while (Tok.isNot(tok::annot_pragma_openmp_end))
945  ConsumeAnyToken();
946  }
947  ConsumeAnyToken();
948  Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
949  } else
950  SkipUntil(tok::annot_pragma_openmp_end);
951  break;
952  case OMPD_flush:
953  if (PP.LookAhead(0).is(tok::l_paren)) {
954  FlushHasClause = true;
955  // Push copy of the current token back to stream to properly parse
956  // pseudo-clause OMPFlushClause.
957  PP.EnterToken(Tok);
958  }
959  LLVM_FALLTHROUGH;
960  case OMPD_taskyield:
961  case OMPD_barrier:
962  case OMPD_taskwait:
963  case OMPD_cancellation_point:
964  case OMPD_cancel:
965  case OMPD_target_enter_data:
966  case OMPD_target_exit_data:
967  case OMPD_target_update:
968  if (Allowed == ACK_StatementsOpenMPNonStandalone) {
969  Diag(Tok, diag::err_omp_immediate_directive)
970  << getOpenMPDirectiveName(DKind) << 0;
971  }
972  HasAssociatedStatement = false;
973  // Fall through for further analysis.
974  LLVM_FALLTHROUGH;
975  case OMPD_parallel:
976  case OMPD_simd:
977  case OMPD_for:
978  case OMPD_for_simd:
979  case OMPD_sections:
980  case OMPD_single:
981  case OMPD_section:
982  case OMPD_master:
983  case OMPD_critical:
984  case OMPD_parallel_for:
985  case OMPD_parallel_for_simd:
986  case OMPD_parallel_sections:
987  case OMPD_task:
988  case OMPD_ordered:
989  case OMPD_atomic:
990  case OMPD_target:
991  case OMPD_teams:
992  case OMPD_taskgroup:
993  case OMPD_target_data:
994  case OMPD_target_parallel:
995  case OMPD_target_parallel_for:
996  case OMPD_taskloop:
997  case OMPD_taskloop_simd:
998  case OMPD_distribute:
999  case OMPD_distribute_parallel_for:
1000  case OMPD_distribute_parallel_for_simd:
1001  case OMPD_distribute_simd:
1002  case OMPD_target_parallel_for_simd:
1003  case OMPD_target_simd:
1004  case OMPD_teams_distribute:
1005  case OMPD_teams_distribute_simd:
1006  case OMPD_teams_distribute_parallel_for_simd:
1007  case OMPD_teams_distribute_parallel_for:
1008  case OMPD_target_teams:
1009  case OMPD_target_teams_distribute:
1010  case OMPD_target_teams_distribute_parallel_for:
1011  case OMPD_target_teams_distribute_parallel_for_simd:
1012  case OMPD_target_teams_distribute_simd: {
1013  ConsumeToken();
1014  // Parse directive name of the 'critical' directive if any.
1015  if (DKind == OMPD_critical) {
1016  BalancedDelimiterTracker T(*this, tok::l_paren,
1017  tok::annot_pragma_openmp_end);
1018  if (!T.consumeOpen()) {
1019  if (Tok.isAnyIdentifier()) {
1020  DirName =
1021  DeclarationNameInfo(Tok.getIdentifierInfo(), Tok.getLocation());
1022  ConsumeAnyToken();
1023  } else {
1024  Diag(Tok, diag::err_omp_expected_identifier_for_critical);
1025  }
1026  T.consumeClose();
1027  }
1028  } else if (DKind == OMPD_cancellation_point || DKind == OMPD_cancel) {
1029  CancelRegion = ParseOpenMPDirectiveKind(*this);
1030  if (Tok.isNot(tok::annot_pragma_openmp_end))
1031  ConsumeToken();
1032  }
1033 
1034  if (isOpenMPLoopDirective(DKind))
1035  ScopeFlags |= Scope::OpenMPLoopDirectiveScope;
1036  if (isOpenMPSimdDirective(DKind))
1037  ScopeFlags |= Scope::OpenMPSimdDirectiveScope;
1038  ParseScope OMPDirectiveScope(this, ScopeFlags);
1039  Actions.StartOpenMPDSABlock(DKind, DirName, Actions.getCurScope(), Loc);
1040 
1041  while (Tok.isNot(tok::annot_pragma_openmp_end)) {
1042  OpenMPClauseKind CKind =
1043  Tok.isAnnotation()
1044  ? OMPC_unknown
1045  : FlushHasClause ? OMPC_flush
1046  : getOpenMPClauseKind(PP.getSpelling(Tok));
1047  Actions.StartOpenMPClause(CKind);
1048  FlushHasClause = false;
1049  OMPClause *Clause =
1050  ParseOpenMPClause(DKind, CKind, !FirstClauses[CKind].getInt());
1051  FirstClauses[CKind].setInt(true);
1052  if (Clause) {
1053  FirstClauses[CKind].setPointer(Clause);
1054  Clauses.push_back(Clause);
1055  }
1056 
1057  // Skip ',' if any.
1058  if (Tok.is(tok::comma))
1059  ConsumeToken();
1060  Actions.EndOpenMPClause();
1061  }
1062  // End location of the directive.
1063  EndLoc = Tok.getLocation();
1064  // Consume final annot_pragma_openmp_end.
1065  ConsumeAnnotationToken();
1066 
1067  // OpenMP [2.13.8, ordered Construct, Syntax]
1068  // If the depend clause is specified, the ordered construct is a stand-alone
1069  // directive.
1070  if (DKind == OMPD_ordered && FirstClauses[OMPC_depend].getInt()) {
1071  if (Allowed == ACK_StatementsOpenMPNonStandalone) {
1072  Diag(Loc, diag::err_omp_immediate_directive)
1073  << getOpenMPDirectiveName(DKind) << 1
1074  << getOpenMPClauseName(OMPC_depend);
1075  }
1076  HasAssociatedStatement = false;
1077  }
1078 
1079  StmtResult AssociatedStmt;
1080  if (HasAssociatedStatement) {
1081  // The body is a block scope like in Lambdas and Blocks.
1082  Sema::CompoundScopeRAII CompoundScope(Actions);
1083  Actions.ActOnOpenMPRegionStart(DKind, getCurScope());
1084  Actions.ActOnStartOfCompoundStmt();
1085  // Parse statement
1086  AssociatedStmt = ParseStatement();
1087  Actions.ActOnFinishOfCompoundStmt();
1088  AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses);
1089  } else if (DKind == OMPD_target_update || DKind == OMPD_target_enter_data ||
1090  DKind == OMPD_target_exit_data) {
1091  Sema::CompoundScopeRAII CompoundScope(Actions);
1092  Actions.ActOnOpenMPRegionStart(DKind, getCurScope());
1093  Actions.ActOnStartOfCompoundStmt();
1094  AssociatedStmt =
1095  Actions.ActOnCompoundStmt(Loc, Loc, llvm::None, /*isStmtExpr=*/false);
1096  Actions.ActOnFinishOfCompoundStmt();
1097  AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses);
1098  }
1099  Directive = Actions.ActOnOpenMPExecutableDirective(
1100  DKind, DirName, CancelRegion, Clauses, AssociatedStmt.get(), Loc,
1101  EndLoc);
1102 
1103  // Exit scope.
1104  Actions.EndOpenMPDSABlock(Directive.get());
1105  OMPDirectiveScope.Exit();
1106  break;
1107  }
1108  case OMPD_declare_simd:
1109  case OMPD_declare_target:
1110  case OMPD_end_declare_target:
1111  Diag(Tok, diag::err_omp_unexpected_directive)
1112  << getOpenMPDirectiveName(DKind);
1113  SkipUntil(tok::annot_pragma_openmp_end);
1114  break;
1115  case OMPD_unknown:
1116  Diag(Tok, diag::err_omp_unknown_directive);
1117  SkipUntil(tok::annot_pragma_openmp_end);
1118  break;
1119  }
1120  return Directive;
1121 }
1122 
1123 // Parses simple list:
1124 // simple-variable-list:
1125 // '(' id-expression {, id-expression} ')'
1126 //
1127 bool Parser::ParseOpenMPSimpleVarList(
1129  const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)> &
1130  Callback,
1131  bool AllowScopeSpecifier) {
1132  // Parse '('.
1133  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1134  if (T.expectAndConsume(diag::err_expected_lparen_after,
1136  return true;
1137  bool IsCorrect = true;
1138  bool NoIdentIsFound = true;
1139 
1140  // Read tokens while ')' or annot_pragma_openmp_end is not found.
1141  while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) {
1142  CXXScopeSpec SS;
1143  SourceLocation TemplateKWLoc;
1144  UnqualifiedId Name;
1145  // Read var name.
1146  Token PrevTok = Tok;
1147  NoIdentIsFound = false;
1148 
1149  if (AllowScopeSpecifier && getLangOpts().CPlusPlus &&
1150  ParseOptionalCXXScopeSpecifier(SS, nullptr, false)) {
1151  IsCorrect = false;
1152  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1153  StopBeforeMatch);
1154  } else if (ParseUnqualifiedId(SS, false, false, false, false, nullptr,
1155  TemplateKWLoc, Name)) {
1156  IsCorrect = false;
1157  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1158  StopBeforeMatch);
1159  } else if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren) &&
1160  Tok.isNot(tok::annot_pragma_openmp_end)) {
1161  IsCorrect = false;
1162  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1163  StopBeforeMatch);
1164  Diag(PrevTok.getLocation(), diag::err_expected)
1165  << tok::identifier
1166  << SourceRange(PrevTok.getLocation(), PrevTokLocation);
1167  } else {
1168  Callback(SS, Actions.GetNameFromUnqualifiedId(Name));
1169  }
1170  // Consume ','.
1171  if (Tok.is(tok::comma)) {
1172  ConsumeToken();
1173  }
1174  }
1175 
1176  if (NoIdentIsFound) {
1177  Diag(Tok, diag::err_expected) << tok::identifier;
1178  IsCorrect = false;
1179  }
1180 
1181  // Parse ')'.
1182  IsCorrect = !T.consumeClose() && IsCorrect;
1183 
1184  return !IsCorrect;
1185 }
1186 
1187 /// \brief Parsing of OpenMP clauses.
1188 ///
1189 /// clause:
1190 /// if-clause | final-clause | num_threads-clause | safelen-clause |
1191 /// default-clause | private-clause | firstprivate-clause | shared-clause
1192 /// | linear-clause | aligned-clause | collapse-clause |
1193 /// lastprivate-clause | reduction-clause | proc_bind-clause |
1194 /// schedule-clause | copyin-clause | copyprivate-clause | untied-clause |
1195 /// mergeable-clause | flush-clause | read-clause | write-clause |
1196 /// update-clause | capture-clause | seq_cst-clause | device-clause |
1197 /// simdlen-clause | threads-clause | simd-clause | num_teams-clause |
1198 /// thread_limit-clause | priority-clause | grainsize-clause |
1199 /// nogroup-clause | num_tasks-clause | hint-clause | to-clause |
1200 /// from-clause | is_device_ptr-clause | task_reduction-clause |
1201 /// in_reduction-clause
1202 ///
1203 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
1204  OpenMPClauseKind CKind, bool FirstClause) {
1205  OMPClause *Clause = nullptr;
1206  bool ErrorFound = false;
1207  // Check if clause is allowed for the given directive.
1208  if (CKind != OMPC_unknown && !isAllowedClauseForDirective(DKind, CKind)) {
1209  Diag(Tok, diag::err_omp_unexpected_clause) << getOpenMPClauseName(CKind)
1210  << getOpenMPDirectiveName(DKind);
1211  ErrorFound = true;
1212  }
1213 
1214  switch (CKind) {
1215  case OMPC_final:
1216  case OMPC_num_threads:
1217  case OMPC_safelen:
1218  case OMPC_simdlen:
1219  case OMPC_collapse:
1220  case OMPC_ordered:
1221  case OMPC_device:
1222  case OMPC_num_teams:
1223  case OMPC_thread_limit:
1224  case OMPC_priority:
1225  case OMPC_grainsize:
1226  case OMPC_num_tasks:
1227  case OMPC_hint:
1228  // OpenMP [2.5, Restrictions]
1229  // At most one num_threads clause can appear on the directive.
1230  // OpenMP [2.8.1, simd construct, Restrictions]
1231  // Only one safelen clause can appear on a simd directive.
1232  // Only one simdlen clause can appear on a simd directive.
1233  // Only one collapse clause can appear on a simd directive.
1234  // OpenMP [2.9.1, target data construct, Restrictions]
1235  // At most one device clause can appear on the directive.
1236  // OpenMP [2.11.1, task Construct, Restrictions]
1237  // At most one if clause can appear on the directive.
1238  // At most one final clause can appear on the directive.
1239  // OpenMP [teams Construct, Restrictions]
1240  // At most one num_teams clause can appear on the directive.
1241  // At most one thread_limit clause can appear on the directive.
1242  // OpenMP [2.9.1, task Construct, Restrictions]
1243  // At most one priority clause can appear on the directive.
1244  // OpenMP [2.9.2, taskloop Construct, Restrictions]
1245  // At most one grainsize clause can appear on the directive.
1246  // OpenMP [2.9.2, taskloop Construct, Restrictions]
1247  // At most one num_tasks clause can appear on the directive.
1248  if (!FirstClause) {
1249  Diag(Tok, diag::err_omp_more_one_clause)
1250  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1251  ErrorFound = true;
1252  }
1253 
1254  if (CKind == OMPC_ordered && PP.LookAhead(/*N=*/0).isNot(tok::l_paren))
1255  Clause = ParseOpenMPClause(CKind);
1256  else
1257  Clause = ParseOpenMPSingleExprClause(CKind);
1258  break;
1259  case OMPC_default:
1260  case OMPC_proc_bind:
1261  // OpenMP [2.14.3.1, Restrictions]
1262  // Only a single default clause may be specified on a parallel, task or
1263  // teams directive.
1264  // OpenMP [2.5, parallel Construct, Restrictions]
1265  // At most one proc_bind clause can appear on the directive.
1266  if (!FirstClause) {
1267  Diag(Tok, diag::err_omp_more_one_clause)
1268  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1269  ErrorFound = true;
1270  }
1271 
1272  Clause = ParseOpenMPSimpleClause(CKind);
1273  break;
1274  case OMPC_schedule:
1275  case OMPC_dist_schedule:
1276  case OMPC_defaultmap:
1277  // OpenMP [2.7.1, Restrictions, p. 3]
1278  // Only one schedule clause can appear on a loop directive.
1279  // OpenMP [2.10.4, Restrictions, p. 106]
1280  // At most one defaultmap clause can appear on the directive.
1281  if (!FirstClause) {
1282  Diag(Tok, diag::err_omp_more_one_clause)
1283  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1284  ErrorFound = true;
1285  }
1286  LLVM_FALLTHROUGH;
1287 
1288  case OMPC_if:
1289  Clause = ParseOpenMPSingleExprWithArgClause(CKind);
1290  break;
1291  case OMPC_nowait:
1292  case OMPC_untied:
1293  case OMPC_mergeable:
1294  case OMPC_read:
1295  case OMPC_write:
1296  case OMPC_update:
1297  case OMPC_capture:
1298  case OMPC_seq_cst:
1299  case OMPC_threads:
1300  case OMPC_simd:
1301  case OMPC_nogroup:
1302  // OpenMP [2.7.1, Restrictions, p. 9]
1303  // Only one ordered clause can appear on a loop directive.
1304  // OpenMP [2.7.1, Restrictions, C/C++, p. 4]
1305  // Only one nowait clause can appear on a for directive.
1306  if (!FirstClause) {
1307  Diag(Tok, diag::err_omp_more_one_clause)
1308  << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
1309  ErrorFound = true;
1310  }
1311 
1312  Clause = ParseOpenMPClause(CKind);
1313  break;
1314  case OMPC_private:
1315  case OMPC_firstprivate:
1316  case OMPC_lastprivate:
1317  case OMPC_shared:
1318  case OMPC_reduction:
1319  case OMPC_task_reduction:
1320  case OMPC_in_reduction:
1321  case OMPC_linear:
1322  case OMPC_aligned:
1323  case OMPC_copyin:
1324  case OMPC_copyprivate:
1325  case OMPC_flush:
1326  case OMPC_depend:
1327  case OMPC_map:
1328  case OMPC_to:
1329  case OMPC_from:
1330  case OMPC_use_device_ptr:
1331  case OMPC_is_device_ptr:
1332  Clause = ParseOpenMPVarListClause(DKind, CKind);
1333  break;
1334  case OMPC_unknown:
1335  Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
1336  << getOpenMPDirectiveName(DKind);
1337  SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
1338  break;
1339  case OMPC_threadprivate:
1340  case OMPC_uniform:
1341  Diag(Tok, diag::err_omp_unexpected_clause) << getOpenMPClauseName(CKind)
1342  << getOpenMPDirectiveName(DKind);
1343  SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch);
1344  break;
1345  }
1346  return ErrorFound ? nullptr : Clause;
1347 }
1348 
1349 /// Parses simple expression in parens for single-expression clauses of OpenMP
1350 /// constructs.
1351 /// \param RLoc Returned location of right paren.
1353  SourceLocation &RLoc) {
1354  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1355  if (T.expectAndConsume(diag::err_expected_lparen_after, ClauseName.data()))
1356  return ExprError();
1357 
1358  SourceLocation ELoc = Tok.getLocation();
1359  ExprResult LHS(ParseCastExpression(
1360  /*isUnaryExpression=*/false, /*isAddressOfOperand=*/false, NotTypeCast));
1361  ExprResult Val(ParseRHSOfBinaryExpression(LHS, prec::Conditional));
1362  Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc);
1363 
1364  // Parse ')'.
1365  T.consumeClose();
1366 
1367  RLoc = T.getCloseLocation();
1368  return Val;
1369 }
1370 
1371 /// \brief Parsing of OpenMP clauses with single expressions like 'final',
1372 /// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams',
1373 /// 'thread_limit', 'simdlen', 'priority', 'grainsize', 'num_tasks' or 'hint'.
1374 ///
1375 /// final-clause:
1376 /// 'final' '(' expression ')'
1377 ///
1378 /// num_threads-clause:
1379 /// 'num_threads' '(' expression ')'
1380 ///
1381 /// safelen-clause:
1382 /// 'safelen' '(' expression ')'
1383 ///
1384 /// simdlen-clause:
1385 /// 'simdlen' '(' expression ')'
1386 ///
1387 /// collapse-clause:
1388 /// 'collapse' '(' expression ')'
1389 ///
1390 /// priority-clause:
1391 /// 'priority' '(' expression ')'
1392 ///
1393 /// grainsize-clause:
1394 /// 'grainsize' '(' expression ')'
1395 ///
1396 /// num_tasks-clause:
1397 /// 'num_tasks' '(' expression ')'
1398 ///
1399 /// hint-clause:
1400 /// 'hint' '(' expression ')'
1401 ///
1402 OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind) {
1403  SourceLocation Loc = ConsumeToken();
1404  SourceLocation LLoc = Tok.getLocation();
1405  SourceLocation RLoc;
1406 
1407  ExprResult Val = ParseOpenMPParensExpr(getOpenMPClauseName(Kind), RLoc);
1408 
1409  if (Val.isInvalid())
1410  return nullptr;
1411 
1412  return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc);
1413 }
1414 
1415 /// \brief Parsing of simple OpenMP clauses like 'default' or 'proc_bind'.
1416 ///
1417 /// default-clause:
1418 /// 'default' '(' 'none' | 'shared' ')
1419 ///
1420 /// proc_bind-clause:
1421 /// 'proc_bind' '(' 'master' | 'close' | 'spread' ')
1422 ///
1423 OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind) {
1424  SourceLocation Loc = Tok.getLocation();
1425  SourceLocation LOpen = ConsumeToken();
1426  // Parse '('.
1427  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1428  if (T.expectAndConsume(diag::err_expected_lparen_after,
1429  getOpenMPClauseName(Kind)))
1430  return nullptr;
1431 
1432  unsigned Type = getOpenMPSimpleClauseType(
1433  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1434  SourceLocation TypeLoc = Tok.getLocation();
1435  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1436  Tok.isNot(tok::annot_pragma_openmp_end))
1437  ConsumeAnyToken();
1438 
1439  // Parse ')'.
1440  T.consumeClose();
1441 
1442  return Actions.ActOnOpenMPSimpleClause(Kind, Type, TypeLoc, LOpen, Loc,
1443  Tok.getLocation());
1444 }
1445 
1446 /// \brief Parsing of OpenMP clauses like 'ordered'.
1447 ///
1448 /// ordered-clause:
1449 /// 'ordered'
1450 ///
1451 /// nowait-clause:
1452 /// 'nowait'
1453 ///
1454 /// untied-clause:
1455 /// 'untied'
1456 ///
1457 /// mergeable-clause:
1458 /// 'mergeable'
1459 ///
1460 /// read-clause:
1461 /// 'read'
1462 ///
1463 /// threads-clause:
1464 /// 'threads'
1465 ///
1466 /// simd-clause:
1467 /// 'simd'
1468 ///
1469 /// nogroup-clause:
1470 /// 'nogroup'
1471 ///
1472 OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind) {
1473  SourceLocation Loc = Tok.getLocation();
1474  ConsumeAnyToken();
1475 
1476  return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation());
1477 }
1478 
1479 
1480 /// \brief Parsing of OpenMP clauses with single expressions and some additional
1481 /// argument like 'schedule' or 'dist_schedule'.
1482 ///
1483 /// schedule-clause:
1484 /// 'schedule' '(' [ modifier [ ',' modifier ] ':' ] kind [',' expression ]
1485 /// ')'
1486 ///
1487 /// if-clause:
1488 /// 'if' '(' [ directive-name-modifier ':' ] expression ')'
1489 ///
1490 /// defaultmap:
1491 /// 'defaultmap' '(' modifier ':' kind ')'
1492 ///
1493 OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPClauseKind Kind) {
1494  SourceLocation Loc = ConsumeToken();
1495  SourceLocation DelimLoc;
1496  // Parse '('.
1497  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1498  if (T.expectAndConsume(diag::err_expected_lparen_after,
1499  getOpenMPClauseName(Kind)))
1500  return nullptr;
1501 
1502  ExprResult Val;
1505  if (Kind == OMPC_schedule) {
1506  enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements };
1507  Arg.resize(NumberOfElements);
1508  KLoc.resize(NumberOfElements);
1509  Arg[Modifier1] = OMPC_SCHEDULE_MODIFIER_unknown;
1510  Arg[Modifier2] = OMPC_SCHEDULE_MODIFIER_unknown;
1511  Arg[ScheduleKind] = OMPC_SCHEDULE_unknown;
1512  auto KindModifier = getOpenMPSimpleClauseType(
1513  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1514  if (KindModifier > OMPC_SCHEDULE_unknown) {
1515  // Parse 'modifier'
1516  Arg[Modifier1] = KindModifier;
1517  KLoc[Modifier1] = Tok.getLocation();
1518  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1519  Tok.isNot(tok::annot_pragma_openmp_end))
1520  ConsumeAnyToken();
1521  if (Tok.is(tok::comma)) {
1522  // Parse ',' 'modifier'
1523  ConsumeAnyToken();
1524  KindModifier = getOpenMPSimpleClauseType(
1525  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1526  Arg[Modifier2] = KindModifier > OMPC_SCHEDULE_unknown
1527  ? KindModifier
1528  : (unsigned)OMPC_SCHEDULE_unknown;
1529  KLoc[Modifier2] = 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  if (Tok.is(tok::colon))
1536  ConsumeAnyToken();
1537  else
1538  Diag(Tok, diag::warn_pragma_expected_colon) << "schedule modifier";
1539  KindModifier = getOpenMPSimpleClauseType(
1540  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
1541  }
1542  Arg[ScheduleKind] = KindModifier;
1543  KLoc[ScheduleKind] = Tok.getLocation();
1544  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1545  Tok.isNot(tok::annot_pragma_openmp_end))
1546  ConsumeAnyToken();
1547  if ((Arg[ScheduleKind] == OMPC_SCHEDULE_static ||
1548  Arg[ScheduleKind] == OMPC_SCHEDULE_dynamic ||
1549  Arg[ScheduleKind] == OMPC_SCHEDULE_guided) &&
1550  Tok.is(tok::comma))
1551  DelimLoc = ConsumeAnyToken();
1552  } else if (Kind == OMPC_dist_schedule) {
1553  Arg.push_back(getOpenMPSimpleClauseType(
1554  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok)));
1555  KLoc.push_back(Tok.getLocation());
1556  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1557  Tok.isNot(tok::annot_pragma_openmp_end))
1558  ConsumeAnyToken();
1559  if (Arg.back() == OMPC_DIST_SCHEDULE_static && Tok.is(tok::comma))
1560  DelimLoc = ConsumeAnyToken();
1561  } else if (Kind == OMPC_defaultmap) {
1562  // Get a defaultmap modifier
1563  Arg.push_back(getOpenMPSimpleClauseType(
1564  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok)));
1565  KLoc.push_back(Tok.getLocation());
1566  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1567  Tok.isNot(tok::annot_pragma_openmp_end))
1568  ConsumeAnyToken();
1569  // Parse ':'
1570  if (Tok.is(tok::colon))
1571  ConsumeAnyToken();
1572  else if (Arg.back() != OMPC_DEFAULTMAP_MODIFIER_unknown)
1573  Diag(Tok, diag::warn_pragma_expected_colon) << "defaultmap modifier";
1574  // Get a defaultmap kind
1575  Arg.push_back(getOpenMPSimpleClauseType(
1576  Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok)));
1577  KLoc.push_back(Tok.getLocation());
1578  if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
1579  Tok.isNot(tok::annot_pragma_openmp_end))
1580  ConsumeAnyToken();
1581  } else {
1582  assert(Kind == OMPC_if);
1583  KLoc.push_back(Tok.getLocation());
1584  TentativeParsingAction TPA(*this);
1585  Arg.push_back(ParseOpenMPDirectiveKind(*this));
1586  if (Arg.back() != OMPD_unknown) {
1587  ConsumeToken();
1588  if (Tok.is(tok::colon) && getLangOpts().OpenMP > 40) {
1589  TPA.Commit();
1590  DelimLoc = ConsumeToken();
1591  } else {
1592  TPA.Revert();
1593  Arg.back() = OMPD_unknown;
1594  }
1595  } else
1596  TPA.Revert();
1597  }
1598 
1599  bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) ||
1600  (Kind == OMPC_dist_schedule && DelimLoc.isValid()) ||
1601  Kind == OMPC_if;
1602  if (NeedAnExpression) {
1603  SourceLocation ELoc = Tok.getLocation();
1604  ExprResult LHS(ParseCastExpression(false, false, NotTypeCast));
1605  Val = ParseRHSOfBinaryExpression(LHS, prec::Conditional);
1606  Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc);
1607  }
1608 
1609  // Parse ')'.
1610  T.consumeClose();
1611 
1612  if (NeedAnExpression && Val.isInvalid())
1613  return nullptr;
1614 
1615  return Actions.ActOnOpenMPSingleExprWithArgClause(
1616  Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc,
1617  T.getCloseLocation());
1618 }
1619 
1620 static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec,
1621  UnqualifiedId &ReductionId) {
1622  SourceLocation TemplateKWLoc;
1623  if (ReductionIdScopeSpec.isEmpty()) {
1624  auto OOK = OO_None;
1625  switch (P.getCurToken().getKind()) {
1626  case tok::plus:
1627  OOK = OO_Plus;
1628  break;
1629  case tok::minus:
1630  OOK = OO_Minus;
1631  break;
1632  case tok::star:
1633  OOK = OO_Star;
1634  break;
1635  case tok::amp:
1636  OOK = OO_Amp;
1637  break;
1638  case tok::pipe:
1639  OOK = OO_Pipe;
1640  break;
1641  case tok::caret:
1642  OOK = OO_Caret;
1643  break;
1644  case tok::ampamp:
1645  OOK = OO_AmpAmp;
1646  break;
1647  case tok::pipepipe:
1648  OOK = OO_PipePipe;
1649  break;
1650  default:
1651  break;
1652  }
1653  if (OOK != OO_None) {
1654  SourceLocation OpLoc = P.ConsumeToken();
1655  SourceLocation SymbolLocations[] = {OpLoc, OpLoc, SourceLocation()};
1656  ReductionId.setOperatorFunctionId(OpLoc, OOK, SymbolLocations);
1657  return false;
1658  }
1659  }
1660  return P.ParseUnqualifiedId(ReductionIdScopeSpec, /*EnteringContext*/ false,
1661  /*AllowDestructorName*/ false,
1662  /*AllowConstructorName*/ false,
1663  /*AllowDeductionGuide*/ false,
1664  nullptr, TemplateKWLoc, ReductionId);
1665 }
1666 
1667 /// Parses clauses with list.
1671  OpenMPVarListDataTy &Data) {
1672  UnqualifiedId UnqualifiedReductionId;
1673  bool InvalidReductionId = false;
1674  bool MapTypeModifierSpecified = false;
1675 
1676  // Parse '('.
1677  BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
1678  if (T.expectAndConsume(diag::err_expected_lparen_after,
1679  getOpenMPClauseName(Kind)))
1680  return true;
1681 
1682  bool NeedRParenForLinear = false;
1683  BalancedDelimiterTracker LinearT(*this, tok::l_paren,
1684  tok::annot_pragma_openmp_end);
1685  // Handle reduction-identifier for reduction clause.
1686  if (Kind == OMPC_reduction || Kind == OMPC_task_reduction ||
1687  Kind == OMPC_in_reduction) {
1688  ColonProtectionRAIIObject ColonRAII(*this);
1689  if (getLangOpts().CPlusPlus)
1690  ParseOptionalCXXScopeSpecifier(Data.ReductionIdScopeSpec,
1691  /*ObjectType=*/nullptr,
1692  /*EnteringContext=*/false);
1693  InvalidReductionId = ParseReductionId(*this, Data.ReductionIdScopeSpec,
1694  UnqualifiedReductionId);
1695  if (InvalidReductionId) {
1696  SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
1697  StopBeforeMatch);
1698  }
1699  if (Tok.is(tok::colon))
1700  Data.ColonLoc = ConsumeToken();
1701  else
1702  Diag(Tok, diag::warn_pragma_expected_colon) << "reduction identifier";
1703  if (!InvalidReductionId)
1704  Data.ReductionId =
1705  Actions.GetNameFromUnqualifiedId(UnqualifiedReductionId);
1706  } else if (Kind == OMPC_depend) {
1707  // Handle dependency type for depend clause.
1708  ColonProtectionRAIIObject ColonRAII(*this);
1709  Data.DepKind =
1711  Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : ""));
1712  Data.DepLinMapLoc = Tok.getLocation();
1713 
1714  if (Data.DepKind == OMPC_DEPEND_unknown) {
1715  SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
1716  StopBeforeMatch);
1717  } else {
1718  ConsumeToken();
1719  // Special processing for depend(source) clause.
1720  if (DKind == OMPD_ordered && Data.DepKind == OMPC_DEPEND_source) {
1721  // Parse ')'.
1722  T.consumeClose();
1723  return false;
1724  }
1725  }
1726  if (Tok.is(tok::colon))
1727  Data.ColonLoc = ConsumeToken();
1728  else {
1729  Diag(Tok, DKind == OMPD_ordered ? diag::warn_pragma_expected_colon_r_paren
1730  : diag::warn_pragma_expected_colon)
1731  << "dependency type";
1732  }
1733  } else if (Kind == OMPC_linear) {
1734  // Try to parse modifier if any.
1735  if (Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::l_paren)) {
1736  Data.LinKind = static_cast<OpenMPLinearClauseKind>(
1737  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)));
1738  Data.DepLinMapLoc = ConsumeToken();
1739  LinearT.consumeOpen();
1740  NeedRParenForLinear = true;
1741  }
1742  } else if (Kind == OMPC_map) {
1743  // Handle map type for map clause.
1744  ColonProtectionRAIIObject ColonRAII(*this);
1745 
1746  /// The map clause modifier token can be either a identifier or the C++
1747  /// delete keyword.
1748  auto &&IsMapClauseModifierToken = [](const Token &Tok) -> bool {
1749  return Tok.isOneOf(tok::identifier, tok::kw_delete);
1750  };
1751 
1752  // The first identifier may be a list item, a map-type or a
1753  // map-type-modifier. The map modifier can also be delete which has the same
1754  // spelling of the C++ delete keyword.
1755  Data.MapType =
1756  IsMapClauseModifierToken(Tok)
1757  ? static_cast<OpenMPMapClauseKind>(
1758  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)))
1759  : OMPC_MAP_unknown;
1760  Data.DepLinMapLoc = Tok.getLocation();
1761  bool ColonExpected = false;
1762 
1763  if (IsMapClauseModifierToken(Tok)) {
1764  if (PP.LookAhead(0).is(tok::colon)) {
1765  if (Data.MapType == OMPC_MAP_unknown)
1766  Diag(Tok, diag::err_omp_unknown_map_type);
1767  else if (Data.MapType == OMPC_MAP_always)
1768  Diag(Tok, diag::err_omp_map_type_missing);
1769  ConsumeToken();
1770  } else if (PP.LookAhead(0).is(tok::comma)) {
1771  if (IsMapClauseModifierToken(PP.LookAhead(1)) &&
1772  PP.LookAhead(2).is(tok::colon)) {
1773  Data.MapTypeModifier = Data.MapType;
1774  if (Data.MapTypeModifier != OMPC_MAP_always) {
1775  Diag(Tok, diag::err_omp_unknown_map_type_modifier);
1777  } else
1778  MapTypeModifierSpecified = true;
1779 
1780  ConsumeToken();
1781  ConsumeToken();
1782 
1783  Data.MapType =
1784  IsMapClauseModifierToken(Tok)
1785  ? static_cast<OpenMPMapClauseKind>(
1786  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)))
1787  : OMPC_MAP_unknown;
1788  if (Data.MapType == OMPC_MAP_unknown ||
1789  Data.MapType == OMPC_MAP_always)
1790  Diag(Tok, diag::err_omp_unknown_map_type);
1791  ConsumeToken();
1792  } else {
1793  Data.MapType = OMPC_MAP_tofrom;
1794  Data.IsMapTypeImplicit = true;
1795  }
1796  } else if (IsMapClauseModifierToken(PP.LookAhead(0))) {
1797  if (PP.LookAhead(1).is(tok::colon)) {
1798  Data.MapTypeModifier = Data.MapType;
1799  if (Data.MapTypeModifier != OMPC_MAP_always) {
1800  Diag(Tok, diag::err_omp_unknown_map_type_modifier);
1802  } else
1803  MapTypeModifierSpecified = true;
1804 
1805  ConsumeToken();
1806 
1807  Data.MapType =
1808  IsMapClauseModifierToken(Tok)
1809  ? static_cast<OpenMPMapClauseKind>(
1810  getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok)))
1811  : OMPC_MAP_unknown;
1812  if (Data.MapType == OMPC_MAP_unknown ||
1813  Data.MapType == OMPC_MAP_always)
1814  Diag(Tok, diag::err_omp_unknown_map_type);
1815  ConsumeToken();
1816  } else {
1817  Data.MapType = OMPC_MAP_tofrom;
1818  Data.IsMapTypeImplicit = true;
1819  }
1820  } else {
1821  Data.MapType = OMPC_MAP_tofrom;
1822  Data.IsMapTypeImplicit = true;
1823  }
1824  } else {
1825  Data.MapType = OMPC_MAP_tofrom;
1826  Data.IsMapTypeImplicit = true;
1827  }
1828 
1829  if (Tok.is(tok::colon))
1830  Data.ColonLoc = ConsumeToken();
1831  else if (ColonExpected)
1832  Diag(Tok, diag::warn_pragma_expected_colon) << "map type";
1833  }
1834 
1835  bool IsComma =
1836  (Kind != OMPC_reduction && Kind != OMPC_task_reduction &&
1837  Kind != OMPC_in_reduction && Kind != OMPC_depend && Kind != OMPC_map) ||
1838  (Kind == OMPC_reduction && !InvalidReductionId) ||
1839  (Kind == OMPC_map && Data.MapType != OMPC_MAP_unknown &&
1840  (!MapTypeModifierSpecified ||
1841  Data.MapTypeModifier == OMPC_MAP_always)) ||
1842  (Kind == OMPC_depend && Data.DepKind != OMPC_DEPEND_unknown);
1843  const bool MayHaveTail = (Kind == OMPC_linear || Kind == OMPC_aligned);
1844  while (IsComma || (Tok.isNot(tok::r_paren) && Tok.isNot(tok::colon) &&
1845  Tok.isNot(tok::annot_pragma_openmp_end))) {
1846  ColonProtectionRAIIObject ColonRAII(*this, MayHaveTail);
1847  // Parse variable
1848  ExprResult VarExpr =
1849  Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
1850  if (VarExpr.isUsable())
1851  Vars.push_back(VarExpr.get());
1852  else {
1853  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1854  StopBeforeMatch);
1855  }
1856  // Skip ',' if any
1857  IsComma = Tok.is(tok::comma);
1858  if (IsComma)
1859  ConsumeToken();
1860  else if (Tok.isNot(tok::r_paren) &&
1861  Tok.isNot(tok::annot_pragma_openmp_end) &&
1862  (!MayHaveTail || Tok.isNot(tok::colon)))
1863  Diag(Tok, diag::err_omp_expected_punc)
1864  << ((Kind == OMPC_flush) ? getOpenMPDirectiveName(OMPD_flush)
1865  : getOpenMPClauseName(Kind))
1866  << (Kind == OMPC_flush);
1867  }
1868 
1869  // Parse ')' for linear clause with modifier.
1870  if (NeedRParenForLinear)
1871  LinearT.consumeClose();
1872 
1873  // Parse ':' linear-step (or ':' alignment).
1874  const bool MustHaveTail = MayHaveTail && Tok.is(tok::colon);
1875  if (MustHaveTail) {
1876  Data.ColonLoc = Tok.getLocation();
1877  SourceLocation ELoc = ConsumeToken();
1878  ExprResult Tail = ParseAssignmentExpression();
1879  Tail = Actions.ActOnFinishFullExpr(Tail.get(), ELoc);
1880  if (Tail.isUsable())
1881  Data.TailExpr = Tail.get();
1882  else
1883  SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
1884  StopBeforeMatch);
1885  }
1886 
1887  // Parse ')'.
1888  T.consumeClose();
1889  if ((Kind == OMPC_depend && Data.DepKind != OMPC_DEPEND_unknown &&
1890  Vars.empty()) ||
1891  (Kind != OMPC_depend && Kind != OMPC_map && Vars.empty()) ||
1892  (MustHaveTail && !Data.TailExpr) || InvalidReductionId)
1893  return true;
1894  return false;
1895 }
1896 
1897 /// \brief Parsing of OpenMP clause 'private', 'firstprivate', 'lastprivate',
1898 /// 'shared', 'copyin', 'copyprivate', 'flush', 'reduction', 'task_reduction' or
1899 /// 'in_reduction'.
1900 ///
1901 /// private-clause:
1902 /// 'private' '(' list ')'
1903 /// firstprivate-clause:
1904 /// 'firstprivate' '(' list ')'
1905 /// lastprivate-clause:
1906 /// 'lastprivate' '(' list ')'
1907 /// shared-clause:
1908 /// 'shared' '(' list ')'
1909 /// linear-clause:
1910 /// 'linear' '(' linear-list [ ':' linear-step ] ')'
1911 /// aligned-clause:
1912 /// 'aligned' '(' list [ ':' alignment ] ')'
1913 /// reduction-clause:
1914 /// 'reduction' '(' reduction-identifier ':' list ')'
1915 /// task_reduction-clause:
1916 /// 'task_reduction' '(' reduction-identifier ':' list ')'
1917 /// in_reduction-clause:
1918 /// 'in_reduction' '(' reduction-identifier ':' list ')'
1919 /// copyprivate-clause:
1920 /// 'copyprivate' '(' list ')'
1921 /// flush-clause:
1922 /// 'flush' '(' list ')'
1923 /// depend-clause:
1924 /// 'depend' '(' in | out | inout : list | source ')'
1925 /// map-clause:
1926 /// 'map' '(' [ [ always , ]
1927 /// to | from | tofrom | alloc | release | delete ':' ] list ')';
1928 /// to-clause:
1929 /// 'to' '(' list ')'
1930 /// from-clause:
1931 /// 'from' '(' list ')'
1932 /// use_device_ptr-clause:
1933 /// 'use_device_ptr' '(' list ')'
1934 /// is_device_ptr-clause:
1935 /// 'is_device_ptr' '(' list ')'
1936 ///
1937 /// For 'linear' clause linear-list may have the following forms:
1938 /// list
1939 /// modifier(list)
1940 /// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++).
1941 OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind,
1943  SourceLocation Loc = Tok.getLocation();
1944  SourceLocation LOpen = ConsumeToken();
1946  OpenMPVarListDataTy Data;
1947 
1948  if (ParseOpenMPVarList(DKind, Kind, Vars, Data))
1949  return nullptr;
1950 
1951  return Actions.ActOnOpenMPVarListClause(
1952  Kind, Vars, Data.TailExpr, Loc, LOpen, Data.ColonLoc, Tok.getLocation(),
1953  Data.ReductionIdScopeSpec, Data.ReductionId, Data.DepKind, Data.LinKind,
1954  Data.MapTypeModifier, Data.MapType, Data.IsMapTypeImplicit,
1955  Data.DepLinMapLoc);
1956 }
1957 
OpenMPDependClauseKind DepKind
Definition: Parser.h:2704
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:74
ParseScope - Introduces a new scope for parsing.
Definition: Parser.h:851
DeclarationNameInfo ReductionId
Definition: Parser.h:2703
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
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:86
StringRef P
The base class of the type hierarchy.
Definition: Type.h:1353
SourceLocation getCloseLocation() const
This indicates that the scope corresponds to a function, which means that labels are set here...
Definition: Scope.h:46
bool isAllowedClauseForDirective(OpenMPDirectiveKind DKind, OpenMPClauseKind CKind)
static OpenMPDirectiveKind ParseOpenMPDirectiveKind(Parser &P)
Definition: ParseOpenMP.cpp:83
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:95
void ActOnExitFunctionContext()
Definition: SemaDecl.cpp:1313
Wrapper for void* pointer.
Definition: Ownership.h:45
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.
VarDecl - An instance of this class is created to represent a variable declaration or definition...
Definition: Decl.h:806
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:5040
RAII object that makes sure paren/bracket/brace count is correct after declaration/statement parsing...
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:945
OpenMPLinearClauseKind LinKind
Definition: Parser.h:2705
Base wrapper for a particular "section" of type source info.
Definition: TypeLoc.h:56
RecordDecl - Represents a struct/union/class.
Definition: Decl.h:3478
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
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.
RAII class that helps handle the parsing of an open/close delimiter pair, such as braces { ...
VerifyDiagnosticConsumer::Directive Directive
Represents a C++ unqualified-id that has been parsed.
Definition: DeclSpec.h:886
PtrTy get() const
Definition: Ownership.h:162
bool isNot(T Kind) const
Definition: FormatToken.h:313
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:268
OpenMPClauseKind getOpenMPClauseKind(llvm::StringRef Str)
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:274
bool isOneOf(A K1, B K2) const
Definition: FormatToken.h:306
A RAII object to enter scope of a compound statement.
Definition: Sema.h:3673
DeclarationNameTable DeclarationNames
Definition: ASTContext.h:540
OpenMPMapClauseKind MapTypeModifier
Definition: Parser.h:2706
const FunctionProtoType * T
This is the scope of OpenMP executable directive.
Definition: Scope.h:106
Sema & getActions() const
Definition: Parser.h:274
const Token & getCurToken() const
Definition: Parser.h:277
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:425
This is a compound statement scope.
Definition: Scope.h:129
Preprocessor & getPreprocessor() const
Definition: Parser.h:273
bool isInvalid() const
Definition: Ownership.h:158
SourceLocation getOpenLocation() const
bool isUsable() const
Definition: Ownership.h:159
A class for parsing a DeclSpec.
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:228
Kind
ActionResult - This structure is used while parsing/acting on expressions, stmts, etc...
Definition: Ownership.h:144
ASTContext & getASTContext() const
Definition: Sema.h:1200
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:297
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:278
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:2218
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:114
bool isFunctionOrFunctionTemplate() const
Whether this declaration is a function or function template.
Definition: DeclBase.h:1006
This is a scope that corresponds to the template parameters of a C++ template.
Definition: Scope.h:76
DeclarationName - 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:2699
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:2109
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID)
Definition: Parser.cpp:72
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:1281
ActionResult< Stmt * > StmtResult
Definition: Ownership.h:252
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:58
SourceLocation ConsumeToken()
ConsumeToken - Consume the current &#39;peek token&#39; and lex the next one.
Definition: Parser.h:316
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:109
ExprResult ExprError()
Definition: Ownership.h:267
QualType getType() const
Definition: Decl.h:638
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.
NamedDecl - This represents a decl with a name.
Definition: Decl.h:245
Directive - Abstract class representing a parsed verify directive.
SourceLocation getBegin() const
SourceLocation getLocation() const
Definition: DeclBase.h:416
OpenMPMapClauseKind MapType
Definition: Parser.h:2707
bool isCXXInstanceMember() const
Determine whether the given declaration is an instance member of a C++ class.
Definition: Decl.cpp:1685
Stop skipping at specified token, but don&#39;t skip the token itself.
Definition: Parser.h:927
SourceLocation getEndLoc() const
Definition: Token.h:151