carlo.bertolli updated this revision to Diff 41983.
carlo.bertolli added a comment.

Update dist_schedule patch to reflect changes in distribute directive patch.


Repository:
  rL LLVM

http://reviews.llvm.org/D15220

Files:
  include/clang/AST/OpenMPClause.h
  include/clang/AST/RecursiveASTVisitor.h
  include/clang/Basic/OpenMPKinds.def
  include/clang/Basic/OpenMPKinds.h
  include/clang/Sema/Sema.h
  lib/AST/StmtPrinter.cpp
  lib/AST/StmtProfile.cpp
  lib/Basic/OpenMPKinds.cpp
  lib/CodeGen/CGStmtOpenMP.cpp
  lib/Parse/ParseOpenMP.cpp
  lib/Sema/SemaOpenMP.cpp
  lib/Sema/TreeTransform.h
  lib/Serialization/ASTReaderStmt.cpp
  lib/Serialization/ASTWriterStmt.cpp
  tools/libclang/CIndex.cpp

Index: tools/libclang/CIndex.cpp
===================================================================
--- tools/libclang/CIndex.cpp
+++ tools/libclang/CIndex.cpp
@@ -2196,6 +2196,11 @@
 void OMPClauseEnqueue::VisitOMPMapClause(const OMPMapClause *C) {
   VisitOMPClauseList(C);
 }
+void OMPClauseEnqueue::VisitOMPDistScheduleClause(
+    const OMPDistScheduleClause *C) {
+  Visitor->AddStmt(C->getChunkSize());
+  Visitor->AddStmt(C->getHelperChunkSize());
+}
 }
 
 void EnqueueVisitor::EnqueueChildren(const OMPClause *S) {
Index: lib/Serialization/ASTWriterStmt.cpp
===================================================================
--- lib/Serialization/ASTWriterStmt.cpp
+++ lib/Serialization/ASTWriterStmt.cpp
@@ -2016,6 +2016,15 @@
   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
 }
 
+void OMPClauseWriter::VisitOMPDistScheduleClause(OMPDistScheduleClause *C) {
+  Record.push_back(C->getDistScheduleKind());
+  Writer->Writer.AddStmt(C->getChunkSize());
+  Writer->Writer.AddStmt(C->getHelperChunkSize());
+  Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
+  Writer->Writer.AddSourceLocation(C->getDistScheduleKindLoc(), Record);
+  Writer->Writer.AddSourceLocation(C->getCommaLoc(), Record);
+}
+
 //===----------------------------------------------------------------------===//
 // OpenMP Directives.
 //===----------------------------------------------------------------------===//
Index: lib/Serialization/ASTReaderStmt.cpp
===================================================================
--- lib/Serialization/ASTReaderStmt.cpp
+++ lib/Serialization/ASTReaderStmt.cpp
@@ -1859,6 +1859,9 @@
   case OMPC_priority:
     C = new (Context) OMPPriorityClause();
     break;
+  case OMPC_dist_schedule:
+    C = new (Context) OMPDistScheduleClause();
+    break;
   }
   Visit(C);
   C->setLocStart(Reader->ReadSourceLocation(Record, Idx));
@@ -2198,6 +2201,16 @@
   C->setLParenLoc(Reader->ReadSourceLocation(Record, Idx));
 }
 
+void OMPClauseReader::VisitOMPDistScheduleClause(OMPDistScheduleClause *C) {
+  C->setDistScheduleKind(
+      static_cast<OpenMPDistScheduleClauseKind>(Record[Idx++]));
+  C->setChunkSize(Reader->Reader.ReadSubExpr());
+  C->setHelperChunkSize(Reader->Reader.ReadSubExpr());
+  C->setLParenLoc(Reader->ReadSourceLocation(Record, Idx));
+  C->setDistScheduleKindLoc(Reader->ReadSourceLocation(Record, Idx));
+  C->setCommaLoc(Reader->ReadSourceLocation(Record, Idx));
+}
+
 //===----------------------------------------------------------------------===//
 // OpenMP Directives.
 //===----------------------------------------------------------------------===//
Index: lib/Sema/TreeTransform.h
===================================================================
--- lib/Sema/TreeTransform.h
+++ lib/Sema/TreeTransform.h
@@ -1700,6 +1700,19 @@
                                                EndLoc);
   }
 
+  /// \brief Build a new OpenMP 'dist_schedule' clause.
+  ///
+  /// By default, performs semantic analysis to build the new OpenMP clause.
+  /// Subclasses may override this routine to provide different behavior.
+  OMPClause *
+  RebuildOMPDistScheduleClause(OpenMPDistScheduleClauseKind Kind,
+                               Expr *ChunkSize, SourceLocation StartLoc,
+                               SourceLocation LParenLoc, SourceLocation KindLoc,
+                               SourceLocation CommaLoc, SourceLocation EndLoc) {
+    return getSema().ActOnOpenMPDistScheduleClause(
+        Kind, ChunkSize, StartLoc, LParenLoc, KindLoc, CommaLoc, EndLoc);
+  }
+
   /// \brief Rebuild the operand to an Objective-C \@synchronized statement.
   ///
   /// By default, performs semantic analysis to build the new statement.
@@ -7794,6 +7807,17 @@
       E.get(), C->getLocStart(), C->getLParenLoc(), C->getLocEnd());
 }
 
+template <typename Derived>
+OMPClause *TreeTransform<Derived>::TransformOMPDistScheduleClause(
+    OMPDistScheduleClause *C) {
+  ExprResult E = getDerived().TransformExpr(C->getChunkSize());
+  if (E.isInvalid())
+    return nullptr;
+  return getDerived().RebuildOMPDistScheduleClause(
+      C->getDistScheduleKind(), E.get(), C->getLocStart(), C->getLParenLoc(),
+      C->getDistScheduleKindLoc(), C->getCommaLoc(), C->getLocEnd());
+}
+
 //===----------------------------------------------------------------------===//
 // Expression transformation
 //===----------------------------------------------------------------------===//
Index: lib/Sema/SemaOpenMP.cpp
===================================================================
--- lib/Sema/SemaOpenMP.cpp
+++ lib/Sema/SemaOpenMP.cpp
@@ -5508,6 +5508,7 @@
   case OMPC_threads:
   case OMPC_simd:
   case OMPC_map:
+  case OMPC_dist_schedule:
   case OMPC_unknown:
     llvm_unreachable("Clause is not allowed.");
   }
@@ -5784,6 +5785,7 @@
   case OMPC_num_teams:
   case OMPC_thread_limit:
   case OMPC_priority:
+  case OMPC_dist_schedule:
   case OMPC_unknown:
     llvm_unreachable("Clause is not allowed.");
   }
@@ -5882,6 +5884,11 @@
         ActOnOpenMPIfClause(static_cast<OpenMPDirectiveKind>(Argument), Expr,
                             StartLoc, LParenLoc, ArgumentLoc, DelimLoc, EndLoc);
     break;
+  case OMPC_dist_schedule:
+    Res = ActOnOpenMPDistScheduleClause(
+        static_cast<OpenMPDistScheduleClauseKind>(Argument), Expr, StartLoc,
+        LParenLoc, ArgumentLoc, DelimLoc, EndLoc);
+    break;
   case OMPC_final:
   case OMPC_num_threads:
   case OMPC_safelen:
@@ -6052,6 +6059,7 @@
   case OMPC_num_teams:
   case OMPC_thread_limit:
   case OMPC_priority:
+  case OMPC_dist_schedule:
   case OMPC_unknown:
     llvm_unreachable("Clause is not allowed.");
   }
@@ -6184,6 +6192,7 @@
   case OMPC_num_teams:
   case OMPC_thread_limit:
   case OMPC_priority:
+  case OMPC_dist_schedule:
   case OMPC_unknown:
     llvm_unreachable("Clause is not allowed.");
   }
@@ -8149,3 +8158,56 @@
 
   return new (Context) OMPPriorityClause(ValExpr, StartLoc, LParenLoc, EndLoc);
 }
+
+OMPClause *Sema::ActOnOpenMPDistScheduleClause(
+    OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc,
+    SourceLocation LParenLoc, SourceLocation KindLoc, SourceLocation CommaLoc,
+    SourceLocation EndLoc) {
+  if (Kind == OMPC_DIST_SCHEDULE_unknown) {
+    std::string Values;
+    Values += "'";
+    Values += getOpenMPSimpleClauseTypeName(OMPC_dist_schedule, 0);
+    Values += "'";
+    Diag(KindLoc, diag::err_omp_unexpected_clause_value)
+        << Values << getOpenMPClauseName(OMPC_dist_schedule);
+    return nullptr;
+  }
+  Expr *ValExpr = ChunkSize;
+  Expr *HelperValExpr = nullptr;
+  if (ChunkSize) {
+    if (!ChunkSize->isValueDependent() && !ChunkSize->isTypeDependent() &&
+        !ChunkSize->isInstantiationDependent() &&
+        !ChunkSize->containsUnexpandedParameterPack()) {
+      SourceLocation ChunkSizeLoc = ChunkSize->getLocStart();
+      ExprResult Val =
+          PerformOpenMPImplicitIntegerConversion(ChunkSizeLoc, ChunkSize);
+      if (Val.isInvalid())
+        return nullptr;
+
+      ValExpr = Val.get();
+
+      // OpenMP [2.7.1, Restrictions]
+      //  chunk_size must be a loop invariant integer expression with a positive
+      //  value.
+      llvm::APSInt Result;
+      if (ValExpr->isIntegerConstantExpr(Result, Context)) {
+        if (Result.isSigned() && !Result.isStrictlyPositive()) {
+          Diag(ChunkSizeLoc, diag::err_omp_negative_expression_in_clause)
+              << "dist_schedule" << ChunkSize->getSourceRange();
+          return nullptr;
+        }
+      } else if (isParallelOrTaskRegion(DSAStack->getCurrentDirective())) {
+        auto *ImpVar = buildVarDecl(*this, ChunkSize->getExprLoc(),
+                                    ChunkSize->getType(), ".chunk.");
+        auto *ImpVarRef = buildDeclRefExpr(*this, ImpVar, ChunkSize->getType(),
+                                           ChunkSize->getExprLoc(),
+                                           /*RefersToCapture=*/true);
+        HelperValExpr = ImpVarRef;
+      }
+    }
+  }
+
+  return new (Context)
+      OMPDistScheduleClause(StartLoc, LParenLoc, KindLoc, CommaLoc, EndLoc,
+                            Kind, ValExpr, HelperValExpr);
+}
Index: lib/Parse/ParseOpenMP.cpp
===================================================================
--- lib/Parse/ParseOpenMP.cpp
+++ lib/Parse/ParseOpenMP.cpp
@@ -470,6 +470,7 @@
     Clause = ParseOpenMPSimpleClause(CKind);
     break;
   case OMPC_schedule:
+  case OMPC_dist_schedule:
     // OpenMP [2.7.1, Restrictions, p. 3]
     //  Only one schedule clause can appear on a loop directive.
     if (!FirstClause) {
@@ -659,7 +660,7 @@
   ExprResult Val;
   unsigned Arg;
   SourceLocation KLoc;
-  if (Kind == OMPC_schedule) {
+  if (Kind == OMPC_schedule || Kind == OMPC_dist_schedule) {
     Arg = getOpenMPSimpleClauseType(
         Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok));
     KLoc = Tok.getLocation();
@@ -667,7 +668,7 @@
         Tok.isNot(tok::annot_pragma_openmp_end))
       ConsumeAnyToken();
     if ((Arg == OMPC_SCHEDULE_static || Arg == OMPC_SCHEDULE_dynamic ||
-         Arg == OMPC_SCHEDULE_guided) &&
+         Arg == OMPC_SCHEDULE_guided || Arg == OMPC_DIST_SCHEDULE_static) &&
         Tok.is(tok::comma))
       DelimLoc = ConsumeAnyToken();
   } else {
@@ -684,8 +685,9 @@
     }
   }
 
-  bool NeedAnExpression =
-      (Kind == OMPC_schedule && DelimLoc.isValid()) || Kind == OMPC_if;
+  bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) ||
+                          (Kind == OMPC_dist_schedule && DelimLoc.isValid()) ||
+                          Kind == OMPC_if;
   if (NeedAnExpression) {
     SourceLocation ELoc = Tok.getLocation();
     ExprResult LHS(ParseCastExpression(false, false, NotTypeCast));
Index: lib/CodeGen/CGStmtOpenMP.cpp
===================================================================
--- lib/CodeGen/CGStmtOpenMP.cpp
+++ lib/CodeGen/CGStmtOpenMP.cpp
@@ -2486,6 +2486,7 @@
   case OMPC_num_teams:
   case OMPC_thread_limit:
   case OMPC_priority:
+  case OMPC_dist_schedule:
     llvm_unreachable("Clause is not allowed in 'omp atomic'.");
   }
 }
Index: lib/Basic/OpenMPKinds.cpp
===================================================================
--- lib/Basic/OpenMPKinds.cpp
+++ lib/Basic/OpenMPKinds.cpp
@@ -106,6 +106,11 @@
 #define OPENMP_MAP_KIND(Name) .Case(#Name, OMPC_MAP_##Name)
 #include "clang/Basic/OpenMPKinds.def"
         .Default(OMPC_MAP_unknown);
+  case OMPC_dist_schedule:
+    return llvm::StringSwitch<OpenMPDistScheduleClauseKind>(Str)
+#define OPENMP_DIST_SCHEDULE_KIND(Name) .Case(#Name, OMPC_DIST_SCHEDULE_##Name)
+#include "clang/Basic/OpenMPKinds.def"
+        .Default(OMPC_DIST_SCHEDULE_unknown);
   case OMPC_unknown:
   case OMPC_threadprivate:
   case OMPC_if:
@@ -207,6 +212,16 @@
       break;
     }
     llvm_unreachable("Invalid OpenMP 'map' clause type");
+  case OMPC_dist_schedule:
+    switch (Type) {
+    case OMPC_DIST_SCHEDULE_unknown:
+      return "unknown";
+#define OPENMP_DIST_SCHEDULE_KIND(Name)                                      \
+  case OMPC_DIST_SCHEDULE_##Name:                                            \
+    return #Name;
+#include "clang/Basic/OpenMPKinds.def"
+    }
+    llvm_unreachable("Invalid OpenMP 'dist_schedule' clause type");
   case OMPC_unknown:
   case OMPC_threadprivate:
   case OMPC_if:
Index: lib/AST/StmtProfile.cpp
===================================================================
--- lib/AST/StmtProfile.cpp
+++ lib/AST/StmtProfile.cpp
@@ -599,6 +599,16 @@
   VisitOMPLoopDirective(S);
 }
 
+void OMPClauseProfiler::VisitOMPDistScheduleClause(
+    const OMPDistScheduleClause *C) {
+  if (C->getChunkSize()) {
+    Profiler->VisitStmt(C->getChunkSize());
+    if (C->getHelperChunkSize()) {
+      Profiler->VisitStmt(C->getChunkSize());
+    }
+  }
+}
+
 void StmtProfiler::VisitExpr(const Expr *S) {
   VisitStmt(S);
 }
Index: lib/AST/StmtPrinter.cpp
===================================================================
--- lib/AST/StmtPrinter.cpp
+++ lib/AST/StmtPrinter.cpp
@@ -877,6 +877,16 @@
     OS << ")";
   }
 }
+
+void OMPClausePrinter::VisitOMPDistScheduleClause(OMPDistScheduleClause *Node) {
+  OS << "dist_schedule(" << getOpenMPSimpleClauseTypeName(
+                           OMPC_dist_schedule, Node->getDistScheduleKind());
+  if (Node->getChunkSize()) {
+    OS << ", ";
+    Node->getChunkSize()->printPretty(OS, nullptr, Policy);
+  }
+  OS << ")";
+}
 }
 
 //===----------------------------------------------------------------------===//
Index: include/clang/Sema/Sema.h
===================================================================
--- include/clang/Sema/Sema.h
+++ include/clang/Sema/Sema.h
@@ -8167,6 +8167,11 @@
   OMPClause *ActOnOpenMPPriorityClause(Expr *Priority, SourceLocation StartLoc,
                                        SourceLocation LParenLoc,
                                        SourceLocation EndLoc);
+  /// \brief Called on well-formed 'dist_schedule' clause.
+  OMPClause *ActOnOpenMPDistScheduleClause(
+      OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize,
+      SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation KindLoc,
+      SourceLocation CommaLoc, SourceLocation EndLoc);
 
   /// \brief The kind of conversion being performed.
   enum CheckedConversionKind {
Index: include/clang/Basic/OpenMPKinds.h
===================================================================
--- include/clang/Basic/OpenMPKinds.h
+++ include/clang/Basic/OpenMPKinds.h
@@ -86,6 +86,13 @@
   OMPC_MAP_unknown
 };
 
+/// \brief OpenMP attributes for 'dist_schedule' clause.
+enum OpenMPDistScheduleClauseKind {
+#define OPENMP_DIST_SCHEDULE_KIND(Name) OMPC_DIST_SCHEDULE_##Name,
+#include "clang/Basic/OpenMPKinds.def"
+  OMPC_DIST_SCHEDULE_unknown
+};
+
 OpenMPDirectiveKind getOpenMPDirectiveKind(llvm::StringRef Str);
 const char *getOpenMPDirectiveName(OpenMPDirectiveKind Kind);
 
Index: include/clang/Basic/OpenMPKinds.def
===================================================================
--- include/clang/Basic/OpenMPKinds.def
+++ include/clang/Basic/OpenMPKinds.def
@@ -96,6 +96,10 @@
 #ifndef OPENMP_MAP_KIND
 #define OPENMP_MAP_KIND(Name)
 #endif
+#ifndef OPENMP_DIST_SCHEDULE_KIND
+#define OPENMP_DIST_SCHEDULE_KIND(Name)
+#endif
+
 
 // OpenMP directives.
 OPENMP_DIRECTIVE(threadprivate)
@@ -165,6 +169,7 @@
 OPENMP_CLAUSE(num_teams, OMPNumTeamsClause)
 OPENMP_CLAUSE(thread_limit, OMPThreadLimitClause)
 OPENMP_CLAUSE(priority, OMPPriorityClause)
+OPENMP_CLAUSE(dist_schedule, OMPDistScheduleClause)
 
 // Clauses allowed for OpenMP directive 'parallel'.
 OPENMP_PARALLEL_CLAUSE(if)
@@ -345,12 +350,6 @@
 OPENMP_ORDERED_CLAUSE(threads)
 OPENMP_ORDERED_CLAUSE(simd)
 
-// Clauses allowed for OpenMP directive 'distribute'
-OPENMP_DISTRIBUTE_CLAUSE(private)
-OPENMP_DISTRIBUTE_CLAUSE(firstprivate)
-OPENMP_DISTRIBUTE_CLAUSE(lastprivate)
-OPENMP_DISTRIBUTE_CLAUSE(collapse)
-
 // Map types and map type modifier for 'map' clause.
 OPENMP_MAP_KIND(alloc)
 OPENMP_MAP_KIND(to)
@@ -392,6 +391,16 @@
 OPENMP_TASKLOOP_SIMD_CLAUSE(safelen)
 OPENMP_TASKLOOP_SIMD_CLAUSE(simdlen)
 
+// Clauses allowed for OpenMP directive 'distribute'
+OPENMP_DISTRIBUTE_CLAUSE(private)
+OPENMP_DISTRIBUTE_CLAUSE(firstprivate)
+OPENMP_DISTRIBUTE_CLAUSE(lastprivate)
+OPENMP_DISTRIBUTE_CLAUSE(collapse)
+OPENMP_DISTRIBUTE_CLAUSE(dist_schedule)
+
+// Static attributes for 'dist_schedule' clause.
+OPENMP_DIST_SCHEDULE_KIND(static)
+
 #undef OPENMP_TASKLOOP_SIMD_CLAUSE
 #undef OPENMP_TASKLOOP_CLAUSE
 #undef OPENMP_LINEAR_KIND
@@ -420,3 +429,4 @@
 #undef OPENMP_FOR_SIMD_CLAUSE
 #undef OPENMP_DISTRIBUTE_CLAUSE
 #undef OPENMP_MAP_KIND
+#undef OPENMP_DIST_SCHEDULE_KIND
Index: include/clang/AST/RecursiveASTVisitor.h
===================================================================
--- include/clang/AST/RecursiveASTVisitor.h
+++ include/clang/AST/RecursiveASTVisitor.h
@@ -2753,6 +2753,14 @@
   return true;
 }
 
+template <typename Derived>
+bool RecursiveASTVisitor<Derived>::VisitOMPDistScheduleClause(
+    OMPDistScheduleClause *C) {
+  TRY_TO(TraverseStmt(C->getChunkSize()));
+  TRY_TO(TraverseStmt(C->getHelperChunkSize()));
+  return true;
+}
+
 // FIXME: look at the following tricky-seeming exprs to see if we
 // need to recurse on anything.  These are ones that have methods
 // returning decls or qualtypes or nestednamespecifier -- though I'm
Index: include/clang/AST/OpenMPClause.h
===================================================================
--- include/clang/AST/OpenMPClause.h
+++ include/clang/AST/OpenMPClause.h
@@ -2893,6 +2893,135 @@
   child_range children() { return child_range(&Priority, &Priority + 1); }
 };
 
+/// \brief This represents 'dist_schedule' clause in the '#pragma omp ...'
+/// directive.
+///
+/// \code
+/// #pragma omp distribute dist_schedule(static, 3)
+/// \endcode
+/// In this example directive '#pragma omp distribute' has 'dist_schedule'
+/// clause with arguments 'static' and '3'.
+///
+class OMPDistScheduleClause : public OMPClause {
+  friend class OMPClauseReader;
+  /// \brief Location of '('.
+  SourceLocation LParenLoc;
+  /// \brief A kind of the 'schedule' clause.
+  OpenMPDistScheduleClauseKind Kind;
+  /// \brief Start location of the schedule kind in source code.
+  SourceLocation KindLoc;
+  /// \brief Location of ',' (if any).
+  SourceLocation CommaLoc;
+  /// \brief Chunk size and a reference to pseudo variable for combined
+  /// directives.
+  enum { CHUNK_SIZE, HELPER_CHUNK_SIZE, NUM_EXPRS };
+  Stmt *ChunkSizes[NUM_EXPRS];
+
+  /// \brief Set schedule kind.
+  ///
+  /// \param K Schedule kind.
+  ///
+  void setDistScheduleKind(OpenMPDistScheduleClauseKind K) { Kind = K; }
+  /// \brief Sets the location of '('.
+  ///
+  /// \param Loc Location of '('.
+  ///
+  void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; }
+  /// \brief Set schedule kind start location.
+  ///
+  /// \param KLoc Schedule kind location.
+  ///
+  void setDistScheduleKindLoc(SourceLocation KLoc) { KindLoc = KLoc; }
+  /// \brief Set location of ','.
+  ///
+  /// \param Loc Location of ','.
+  ///
+  void setCommaLoc(SourceLocation Loc) { CommaLoc = Loc; }
+  /// \brief Set chunk size.
+  ///
+  /// \param E Chunk size.
+  ///
+  void setChunkSize(Expr *E) { ChunkSizes[CHUNK_SIZE] = E; }
+  /// \brief Set helper chunk size.
+  ///
+  /// \param E Helper chunk size.
+  ///
+  void setHelperChunkSize(Expr *E) { ChunkSizes[HELPER_CHUNK_SIZE] = E; }
+
+public:
+  /// \brief Build 'dist_schedule' clause with schedule kind \a Kind and chunk
+  /// size expression \a ChunkSize.
+  ///
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param KLoc Starting location of the argument.
+  /// \param CommaLoc Location of ','.
+  /// \param EndLoc Ending location of the clause.
+  /// \param Kind DistSchedule kind.
+  /// \param ChunkSize Chunk size.
+  /// \param HelperChunkSize Helper chunk size for combined directives.
+  ///
+  OMPDistScheduleClause(SourceLocation StartLoc, SourceLocation LParenLoc,
+                        SourceLocation KLoc, SourceLocation CommaLoc,
+                        SourceLocation EndLoc,
+                        OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize,
+                        Expr *HelperChunkSize)
+      : OMPClause(OMPC_dist_schedule, StartLoc, EndLoc), LParenLoc(LParenLoc),
+        Kind(Kind), KindLoc(KLoc), CommaLoc(CommaLoc) {
+    ChunkSizes[CHUNK_SIZE] = ChunkSize;
+    ChunkSizes[HELPER_CHUNK_SIZE] = HelperChunkSize;
+  }
+
+  /// \brief Build an empty clause.
+  ///
+  explicit OMPDistScheduleClause()
+      : OMPClause(OMPC_dist_schedule, SourceLocation(), SourceLocation()),
+        Kind(OMPC_DIST_SCHEDULE_unknown) {
+    ChunkSizes[CHUNK_SIZE] = nullptr;
+    ChunkSizes[HELPER_CHUNK_SIZE] = nullptr;
+  }
+
+  /// \brief Get kind of the clause.
+  ///
+  OpenMPDistScheduleClauseKind getDistScheduleKind() const { return Kind; }
+  /// \brief Get location of '('.
+  ///
+  SourceLocation getLParenLoc() { return LParenLoc; }
+  /// \brief Get kind location.
+  ///
+  SourceLocation getDistScheduleKindLoc() { return KindLoc; }
+  /// \brief Get location of ','.
+  ///
+  SourceLocation getCommaLoc() { return CommaLoc; }
+  /// \brief Get chunk size.
+  ///
+  Expr *getChunkSize() {
+    return dyn_cast_or_null<Expr>(ChunkSizes[CHUNK_SIZE]);
+  }
+  /// \brief Get chunk size.
+  ///
+  Expr *getChunkSize() const {
+    return dyn_cast_or_null<Expr>(ChunkSizes[CHUNK_SIZE]);
+  }
+  /// \brief Get helper chunk size.
+  ///
+  Expr *getHelperChunkSize() {
+    return dyn_cast_or_null<Expr>(ChunkSizes[HELPER_CHUNK_SIZE]);
+  }
+  /// \brief Get helper chunk size.
+  ///
+  Expr *getHelperChunkSize() const {
+    return dyn_cast_or_null<Expr>(ChunkSizes[HELPER_CHUNK_SIZE]);
+  }
+
+  static bool classof(const OMPClause *T) {
+    return T->getClauseKind() == OMPC_dist_schedule;
+  }
+
+  child_range children() {
+    return child_range(&ChunkSizes[CHUNK_SIZE], &ChunkSizes[CHUNK_SIZE] + 1);
+  }
+};
 } // end namespace clang
 
 #endif // LLVM_CLANG_AST_OPENMPCLAUSE_H
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