[OpenMP50] Add parallel master construct

[ABataev]

Missing check for prohibited nesting of the barrier and worksharing directvies in the master regions. Plus, definitely no tests for this.

clang/include/clang/AST/StmtOpenMP.h

1857

Why do we need this if cancel in parallel master is not supported?

clang/include/clang/Sema/Sema.h

9564

Not formatted

clang/lib/AST/StmtOpenMP.cpp

335–349

Why moved to a different place?

clang/lib/CodeGen/CGStmtOpenMP.cpp

2872–2884

Make it static local, not a member function

clang/lib/Sema/SemaOpenMP.cpp

10679

parallel master is very similar to just parallel rather than with parallel master taskloop when it comes to the analysis of the clauses.

clang/test/OpenMP/parallel_master_codegen.cpp

17–26

Check that the region was outlined. Plus, codegen for some of the clauses are required.

[cchen]

Update based on feedback

[ABataev]

clang/include/clang/AST/StmtOpenMP.h

1879

HasCancel param?

clang/lib/AST/StmtOpenMP.cpp

560

auto *Dir

clang/lib/CodeGen/CGStmtOpenMP.cpp

2933

Do we need copyins here at all? We have only master thread active here in this construct.

2950

Seems to me, missed this code at the end:

emitPostUpdateForReductionClause(*this, S,
                                 [](CodeGenFunction &) { return nullptr; });

clang/lib/Sema/SemaOpenMP.cpp

4015

This is wrong, I believe. you don't have pure master region here, it is parallel master and it must be allowed to use it in the worksharing and tasking regions.

clang/test/OpenMP/nesting_of_regions.cpp

2999

Are simds allowed in master?

3024

Is this allowed by the standard?

clang/test/OpenMP/parallel_master_ast_print.cpp

16–22

Add printing of all supported clauses, take a look at other AST printing tests.

[cchen]

clang/lib/CodeGen/CGStmtOpenMP.cpp

2933

I think we still need to emit copyins since the assignment to the threadprivate copies of the other threads must be observable after the parallel region.

clang/test/OpenMP/nesting_of_regions.cpp

2999

I didn't see restriction about simds in master and there is also a test under "MASTER DIRECTIVE" allows simd directive inside master construct.

[cchen]

clang/test/OpenMP/nesting_of_regions.cpp

3024

I didn't see any restriction about master directive inside master directive. Also, nesting_of_regions also have tests for nested master construct.

[cchen]

Fix tests and bugs based on feedback

[ABataev]

clang/test/OpenMP/parallel_master_codegen.cpp

1

A codegen test for if, proc_bind and allocate clauses?

[cchen]

Add ignored codegen tests

[ABataev]

clang/include/clang/AST/StmtOpenMP.h

1875

No such param.

clang/test/OpenMP/parallel_master_codegen.cpp

365

Why do we need the outer parallel region here?

[cchen]

Fix based on feedback

[ABataev]

LG

[cchen]

@ABataev, thanks for your time and patient for the review! Could you land this patch for me when you have free time? Thanks

[rnk]

One of the new tests doesn't pass on Windows, so I reverted this in rG33f6d465d790ac5c9b949e6bc05127d356212079. I made an attempt to fix the checks, but it wasn't trivial.

[ABataev]

Need to fix tests on Windows

[cchen]

How to see the test result on Windows? I've no windows machine to test the compiler.

[cchen]

I've found it: http://lab.llvm.org:8011/builders/llvm-clang-win-x-armv7l/builds/1042

[cchen]

Fix codgen test for Windows

[ABataev]

clang/test/OpenMP/parallel_master_codegen.cpp

145

I think it would be better to pass the triple in all the test runs. Some of your test runs do not include triple and are executed using the default (host-based) triple. Did you try to run the tests with the 32bit triples, for example?

[cchen]

Pass triple for all the test runs

[ABataev]

clang/test/OpenMP/parallel_master_codegen.cpp

68

Not the best idea to use %.global_tid. and %.bound_tid. or similar швы directly in the test, they may be different on different builds. Better to use regular expressions everywhere in the test.

[cchen]

Fix based on feedback

[ABataev]

LG

[cchen]

Can you commit it again for me? thanks!

clang/include/clang-c/Index.h

enum CXCursorKind {
   /** OpenMP master taskloop simd directive.
    */
   CXCursor_OMPMasterTaskLoopSimdDirective      = 283,
 
   /** OpenMP parallel master taskloop simd directive.
    */
   CXCursor_OMPParallelMasterTaskLoopSimdDirective      = 284,
 
-  CXCursor_LastStmt = CXCursor_OMPParallelMasterTaskLoopSimdDirective,
+  /** OpenMP parallel master directive.
+   */
+  CXCursor_OMPParallelMasterDirective      = 285,
+
+  CXCursor_LastStmt = CXCursor_OMPParallelMasterDirective,
 
   /**
    * Cursor that represents the translation unit itself.
    *
    * The translation unit cursor exists primarily to act as the root
    * cursor for traversing the contents of a translation unit.
    */
   CXCursor_TranslationUnit               = 300,

clang/include/clang/AST/RecursiveASTVisitor.h

 })
 
 DEF_TRAVERSE_STMT(OMPParallelForDirective,
                   { TRY_TO(TraverseOMPExecutableDirective(S)); })
 
 DEF_TRAVERSE_STMT(OMPParallelForSimdDirective,
                   { TRY_TO(TraverseOMPExecutableDirective(S)); })
 
+DEF_TRAVERSE_STMT(OMPParallelMasterDirective,
+                  { TRY_TO(TraverseOMPExecutableDirective(S)); })
+
 DEF_TRAVERSE_STMT(OMPParallelSectionsDirective,
                   { TRY_TO(TraverseOMPExecutableDirective(S)); })
 
 DEF_TRAVERSE_STMT(OMPTaskDirective,
                   { TRY_TO(TraverseOMPExecutableDirective(S)); })
 
 DEF_TRAVERSE_STMT(OMPTaskyieldDirective,
                   { TRY_TO(TraverseOMPExecutableDirective(S)); })

clang/include/clang/AST/StmtOpenMP.h

static OMPParallelForSimdDirective *CreateEmpty(const ASTContext &C,
                                                   unsigned CollapsedNum,
                                                   EmptyShell);
 
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == OMPParallelForSimdDirectiveClass;
   }
 };
 
+/// This represents '#pragma omp parallel master' directive.
+///
+/// \code
+/// #pragma omp parallel master private(a,b)
+/// \endcode
+/// In this example directive '#pragma omp parallel master' has clauses
+/// 'private' with the variables 'a' and 'b'
+///
+class OMPParallelMasterDirective : public OMPExecutableDirective {
+  friend class ASTStmtReader;
+
+  OMPParallelMasterDirective(SourceLocation StartLoc, SourceLocation EndLoc,
+                             unsigned NumClauses)
+      : OMPExecutableDirective(this, OMPParallelMasterDirectiveClass,
+                               OMPD_parallel_master, StartLoc, EndLoc,
+                               NumClauses, 1) {}
+
+  explicit OMPParallelMasterDirective(unsigned NumClauses)
+      : OMPExecutableDirective(this, OMPParallelMasterDirectiveClass,
+                               OMPD_parallel_master, SourceLocation(),
+                               SourceLocation(), NumClauses, 1) {}
+
+public:
+  /// Creates directive with a list of \a Clauses.
+  ///
+  /// \param C AST context.
+  /// \param StartLoc Starting location of the directive kind.
+  /// \param EndLoc Ending Location of the directive.
+  /// \param Clauses List of clauses.
+  /// \param AssociatedStmt Statement, associated with the directive.
+  /// \param HasCancel true if current directive has inner cancel directive.
+  ///
+  static OMPParallelMasterDirective *
+  Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
+         ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt);
+
+  /// Creates an empty directive with the place for \a NumClauses
+  /// clauses.
+  ///
+  /// \param C AST context.
+  /// \param NumClauses Number of clauses.
+  ///
+  static OMPParallelMasterDirective *
+  CreateEmpty(const ASTContext &C, unsigned NumClauses, EmptyShell);
+
+  static bool classof(const Stmt *T) {
+    return T->getStmtClass() == OMPParallelMasterDirectiveClass;
+  }
+};
+
 /// This represents '#pragma omp parallel sections' directive.
 ///
 /// \code
 /// #pragma omp parallel sections private(a,b) reduction(+:c,d)
 /// \endcode
 /// In this example directive '#pragma omp parallel sections' has clauses
 /// 'private' with the variables 'a' and 'b' and 'reduction' with operator '+'
 /// and variables 'c' and 'd'.

clang/include/clang/Basic/OpenMPKinds.def

 #  define OPENMP_SINGLE_CLAUSE(Name)
 #endif
 #ifndef OPENMP_PARALLEL_FOR_CLAUSE
 #  define OPENMP_PARALLEL_FOR_CLAUSE(Name)
 #endif
 #ifndef OPENMP_PARALLEL_FOR_SIMD_CLAUSE
 #  define OPENMP_PARALLEL_FOR_SIMD_CLAUSE(Name)
 #endif
+#ifndef OPENMP_PARALLEL_MASTER_CLAUSE
+#  define OPENMP_PARALLEL_MASTER_CLAUSE(Name)
+#endif
 #ifndef OPENMP_PARALLEL_SECTIONS_CLAUSE
 #  define OPENMP_PARALLEL_SECTIONS_CLAUSE(Name)
 #endif
 #ifndef OPENMP_TASK_CLAUSE
 #  define OPENMP_TASK_CLAUSE(Name)
 #endif
 #ifndef OPENMP_ATOMIC_CLAUSE
 #  define OPENMP_ATOMIC_CLAUSE(Name)

 OPENMP_DIRECTIVE_EXT(target_data, "target data")
 OPENMP_DIRECTIVE_EXT(target_enter_data, "target enter data")
 OPENMP_DIRECTIVE_EXT(target_exit_data, "target exit data")
 OPENMP_DIRECTIVE_EXT(target_parallel, "target parallel")
 OPENMP_DIRECTIVE_EXT(target_parallel_for, "target parallel for")
 OPENMP_DIRECTIVE_EXT(target_update, "target update")
 OPENMP_DIRECTIVE_EXT(parallel_for, "parallel for")
 OPENMP_DIRECTIVE_EXT(parallel_for_simd, "parallel for simd")
+OPENMP_DIRECTIVE_EXT(parallel_master, "parallel master")
 OPENMP_DIRECTIVE_EXT(parallel_sections, "parallel sections")
 OPENMP_DIRECTIVE_EXT(for_simd, "for simd")
 OPENMP_DIRECTIVE_EXT(cancellation_point, "cancellation point")
 OPENMP_DIRECTIVE_EXT(declare_reduction, "declare reduction")
 OPENMP_DIRECTIVE_EXT(declare_mapper, "declare mapper")
 OPENMP_DIRECTIVE_EXT(declare_simd, "declare simd")
 OPENMP_DIRECTIVE(taskloop)
 OPENMP_DIRECTIVE_EXT(taskloop_simd, "taskloop simd")

 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(schedule)
 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(safelen)
 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(simdlen)
 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(linear)
 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(aligned)
 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(ordered)
 OPENMP_PARALLEL_FOR_SIMD_CLAUSE(allocate)
 
+// Clauses allowed for OpenMP directive 'parallel master'.
+OPENMP_PARALLEL_MASTER_CLAUSE(if)
+OPENMP_PARALLEL_MASTER_CLAUSE(num_threads)
+OPENMP_PARALLEL_MASTER_CLAUSE(default)
+OPENMP_PARALLEL_MASTER_CLAUSE(private)
+OPENMP_PARALLEL_MASTER_CLAUSE(firstprivate)
+OPENMP_PARALLEL_MASTER_CLAUSE(shared)
+OPENMP_PARALLEL_MASTER_CLAUSE(copyin)
+OPENMP_PARALLEL_MASTER_CLAUSE(reduction)
+OPENMP_PARALLEL_MASTER_CLAUSE(proc_bind)
+OPENMP_PARALLEL_MASTER_CLAUSE(allocate)
+
 // Clauses allowed for OpenMP directive 'parallel sections'.
 OPENMP_PARALLEL_SECTIONS_CLAUSE(if)
 OPENMP_PARALLEL_SECTIONS_CLAUSE(num_threads)
 OPENMP_PARALLEL_SECTIONS_CLAUSE(default)
 OPENMP_PARALLEL_SECTIONS_CLAUSE(proc_bind)
 OPENMP_PARALLEL_SECTIONS_CLAUSE(private)
 OPENMP_PARALLEL_SECTIONS_CLAUSE(firstprivate)
 OPENMP_PARALLEL_SECTIONS_CLAUSE(shared)

 #undef OPENMP_CRITICAL_CLAUSE
 #undef OPENMP_ORDERED_CLAUSE
 #undef OPENMP_CANCEL_CLAUSE
 #undef OPENMP_SINGLE_CLAUSE
 #undef OPENMP_SECTIONS_CLAUSE
 #undef OPENMP_PARALLEL_CLAUSE
 #undef OPENMP_PARALLEL_FOR_CLAUSE
 #undef OPENMP_PARALLEL_FOR_SIMD_CLAUSE
+#undef OPENMP_PARALLEL_MASTER_CLAUSE
 #undef OPENMP_PARALLEL_SECTIONS_CLAUSE
 #undef OPENMP_TASK_CLAUSE
 #undef OPENMP_ATOMIC_CLAUSE
 #undef OPENMP_TARGET_CLAUSE
 #undef OPENMP_REQUIRES_CLAUSE
 #undef OPENMP_ATOMIC_DEFAULT_MEM_ORDER_KIND
 #undef OPENMP_TARGET_DATA_CLAUSE
 #undef OPENMP_TARGET_ENTER_DATA_CLAUSE

clang/include/clang/Basic/StmtNodes.td

 def OMPForSimdDirective : StmtNode<OMPLoopDirective>;
 def OMPSectionsDirective : StmtNode<OMPExecutableDirective>;
 def OMPSectionDirective : StmtNode<OMPExecutableDirective>;
 def OMPSingleDirective : StmtNode<OMPExecutableDirective>;
 def OMPMasterDirective : StmtNode<OMPExecutableDirective>;
 def OMPCriticalDirective : StmtNode<OMPExecutableDirective>;
 def OMPParallelForDirective : StmtNode<OMPLoopDirective>;
 def OMPParallelForSimdDirective : StmtNode<OMPLoopDirective>;
+def OMPParallelMasterDirective : StmtNode<OMPExecutableDirective>;
 def OMPParallelSectionsDirective : StmtNode<OMPExecutableDirective>;
 def OMPTaskDirective : StmtNode<OMPExecutableDirective>;
 def OMPTaskyieldDirective : StmtNode<OMPExecutableDirective>;
 def OMPBarrierDirective : StmtNode<OMPExecutableDirective>;
 def OMPTaskwaitDirective : StmtNode<OMPExecutableDirective>;
 def OMPTaskgroupDirective : StmtNode<OMPExecutableDirective>;
 def OMPFlushDirective : StmtNode<OMPExecutableDirective>;
 def OMPOrderedDirective : StmtNode<OMPExecutableDirective>;

clang/include/clang/Sema/Sema.h

public:
   StmtResult ActOnOpenMPParallelForDirective(
       ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
       SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA);
   /// Called on well-formed '\#pragma omp parallel for simd' after
   /// parsing of the  associated statement.
   StmtResult ActOnOpenMPParallelForSimdDirective(
       ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
       SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA);
+  /// Called on well-formed '\#pragma omp parallel master' after
+  /// parsing of the  associated statement.
+  StmtResult ActOnOpenMPParallelMasterDirective(ArrayRef<OMPClause *> Clauses,
+                                                Stmt *AStmt,
+                                                SourceLocation StartLoc,
+                                                SourceLocation EndLoc);
   /// Called on well-formed '\#pragma omp parallel sections' after
   /// parsing of the  associated statement.
   StmtResult ActOnOpenMPParallelSectionsDirective(ArrayRef<OMPClause *> Clauses,
                                                   Stmt *AStmt,
                                                   SourceLocation StartLoc,
                                                   SourceLocation EndLoc);
   /// Called on well-formed '\#pragma omp task' after parsing of the
   /// associated statement.

clang/include/clang/Serialization/ASTBitCodes.h

enum StmtCode {
       STMT_OMP_FOR_SIMD_DIRECTIVE,
       STMT_OMP_SECTIONS_DIRECTIVE,
       STMT_OMP_SECTION_DIRECTIVE,
       STMT_OMP_SINGLE_DIRECTIVE,
       STMT_OMP_MASTER_DIRECTIVE,
       STMT_OMP_CRITICAL_DIRECTIVE,
       STMT_OMP_PARALLEL_FOR_DIRECTIVE,
       STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE,
+      STMT_OMP_PARALLEL_MASTER_DIRECTIVE,
       STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE,
       STMT_OMP_TASK_DIRECTIVE,
       STMT_OMP_TASKYIELD_DIRECTIVE,
       STMT_OMP_BARRIER_DIRECTIVE,
       STMT_OMP_TASKWAIT_DIRECTIVE,
       STMT_OMP_FLUSH_DIRECTIVE,
       STMT_OMP_ORDERED_DIRECTIVE,
       STMT_OMP_ATOMIC_DIRECTIVE,

clang/lib/AST/StmtOpenMP.cpp

OMPForSimdDirective *OMPForSimdDirective::CreateEmpty(const ASTContext &C,
   unsigned Size =
       llvm::alignTo(sizeof(OMPForSimdDirective), alignof(OMPClause *));
   void *Mem =
       C.Allocate(Size + sizeof(OMPClause *) * NumClauses +
                  sizeof(Stmt *) * numLoopChildren(CollapsedNum, OMPD_for_simd));
   return new (Mem) OMPForSimdDirective(CollapsedNum, NumClauses);
 }
 
 OMPSectionsDirective *OMPSectionsDirective::Create(
     const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
     ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt, bool HasCancel) {
   unsigned Size =
       llvm::alignTo(sizeof(OMPSectionsDirective), alignof(OMPClause *));
   void *Mem =
       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
   OMPSectionsDirective *Dir =
       new (Mem) OMPSectionsDirective(StartLoc, EndLoc, Clauses.size());
   Dir->setClauses(Clauses);
   Dir->setAssociatedStmt(AssociatedStmt);
   Dir->setHasCancel(HasCancel);
   return Dir;
 }
 
 OMPSectionsDirective *OMPSectionsDirective::CreateEmpty(const ASTContext &C,
                                                         unsigned NumClauses,
                                                         EmptyShell) {
   unsigned Size =
       llvm::alignTo(sizeof(OMPSectionsDirective), alignof(OMPClause *));
   void *Mem =
       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
   return new (Mem) OMPSectionsDirective(NumClauses);
OMPParallelForSimdDirective::CreateEmpty(const ASTContext &C,
   unsigned Size =
       llvm::alignTo(sizeof(OMPParallelForSimdDirective), alignof(OMPClause *));
   void *Mem = C.Allocate(
       Size + sizeof(OMPClause *) * NumClauses +
       sizeof(Stmt *) * numLoopChildren(CollapsedNum, OMPD_parallel_for_simd));
   return new (Mem) OMPParallelForSimdDirective(CollapsedNum, NumClauses);
 }
 
+OMPParallelMasterDirective *OMPParallelMasterDirective::Create(
+    const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
+    ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt) {
+  unsigned Size =
+      llvm::alignTo(sizeof(OMPParallelMasterDirective), alignof(OMPClause *));
+  void *Mem =
+      C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
+  auto *Dir =
+      new (Mem) OMPParallelMasterDirective(StartLoc, EndLoc, Clauses.size());
+  Dir->setClauses(Clauses);
+  Dir->setAssociatedStmt(AssociatedStmt);
+  return Dir;
+}
+
+OMPParallelMasterDirective *OMPParallelMasterDirective::CreateEmpty(const ASTContext &C,
+                                                        unsigned NumClauses,
+                                                        EmptyShell) {
+  unsigned Size =
+      llvm::alignTo(sizeof(OMPParallelMasterDirective), alignof(OMPClause *));
+  void *Mem =
+      C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
+  return new (Mem) OMPParallelMasterDirective(NumClauses);
+}
+
 OMPParallelSectionsDirective *OMPParallelSectionsDirective::Create(
     const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
     ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt, bool HasCancel) {
   unsigned Size =
       llvm::alignTo(sizeof(OMPParallelSectionsDirective), alignof(OMPClause *));
   void *Mem =
       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
   OMPParallelSectionsDirective *Dir =

clang/lib/AST/StmtPrinter.cpp

 }
 
 void StmtPrinter::VisitOMPParallelForSimdDirective(
     OMPParallelForSimdDirective *Node) {
   Indent() << "#pragma omp parallel for simd";
   PrintOMPExecutableDirective(Node);
 }
 
+void StmtPrinter::VisitOMPParallelMasterDirective(
+    OMPParallelMasterDirective *Node) {
+  Indent() << "#pragma omp parallel master";
+  PrintOMPExecutableDirective(Node);
+}
+
 void StmtPrinter::VisitOMPParallelSectionsDirective(
     OMPParallelSectionsDirective *Node) {
   Indent() << "#pragma omp parallel sections";
   PrintOMPExecutableDirective(Node);
 }
 
 void StmtPrinter::VisitOMPTaskDirective(OMPTaskDirective *Node) {
   Indent() << "#pragma omp task";

clang/lib/AST/StmtProfile.cpp

StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
   VisitOMPLoopDirective(S);
 }
 
 void StmtProfiler::VisitOMPParallelForSimdDirective(
     const OMPParallelForSimdDirective *S) {
   VisitOMPLoopDirective(S);
 }
 
+void StmtProfiler::VisitOMPParallelMasterDirective(
+    const OMPParallelMasterDirective *S) {
+  VisitOMPExecutableDirective(S);
+}
+
 void StmtProfiler::VisitOMPParallelSectionsDirective(
     const OMPParallelSectionsDirective *S) {
   VisitOMPExecutableDirective(S);
 }
 
 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
   VisitOMPExecutableDirective(S);
 }

clang/lib/Basic/OpenMPKinds.cpp

 #define OPENMP_PARALLEL_FOR_SIMD_CLAUSE(Name)                                  \
   case OMPC_##Name:                                                            \
     return true;
 #include "clang/Basic/OpenMPKinds.def"
     default:
       break;
     }
     break;
+  case OMPD_parallel_master:
+    switch (CKind) {
+#define OPENMP_PARALLEL_MASTER_CLAUSE(Name)                                    \
+    case OMPC_##Name:                                                          \
+      return true;
+#include "clang/Basic/OpenMPKinds.def"
+    default:
+      break;
+    }
+    break;
   case OMPD_parallel_sections:
     switch (CKind) {
 #define OPENMP_PARALLEL_SECTIONS_CLAUSE(Name)                                  \
   case OMPC_##Name:                                                            \
     return true;
 #include "clang/Basic/OpenMPKinds.def"
     default:
       break;
return DKind == OMPD_parallel || DKind == OMPD_parallel_for ||
          DKind == OMPD_target_parallel || DKind == OMPD_target_parallel_for ||
          DKind == OMPD_distribute_parallel_for ||
          DKind == OMPD_distribute_parallel_for_simd ||
          DKind == OMPD_target_parallel_for_simd ||
          DKind == OMPD_teams_distribute_parallel_for ||
          DKind == OMPD_teams_distribute_parallel_for_simd ||
          DKind == OMPD_target_teams_distribute_parallel_for ||
          DKind == OMPD_target_teams_distribute_parallel_for_simd ||
+         DKind == OMPD_parallel_master ||
          DKind == OMPD_parallel_master_taskloop ||
          DKind == OMPD_parallel_master_taskloop_simd;
 }
 
 bool clang::isOpenMPTargetExecutionDirective(OpenMPDirectiveKind DKind) {
   return DKind == OMPD_target || DKind == OMPD_target_parallel ||
          DKind == OMPD_target_parallel_for ||
          DKind == OMPD_target_parallel_for_simd || DKind == OMPD_target_simd ||

 void clang::getOpenMPCaptureRegions(
     SmallVectorImpl<OpenMPDirectiveKind> &CaptureRegions,
     OpenMPDirectiveKind DKind) {
   assert(DKind <= OMPD_unknown);
   switch (DKind) {
   case OMPD_parallel:
   case OMPD_parallel_for:
   case OMPD_parallel_for_simd:
+  case OMPD_parallel_master:
   case OMPD_parallel_sections:
   case OMPD_distribute_parallel_for:
   case OMPD_distribute_parallel_for_simd:
     CaptureRegions.push_back(OMPD_parallel);
     break;
   case OMPD_target_teams:
   case OMPD_target_teams_distribute:
   case OMPD_target_teams_distribute_simd:

clang/lib/CodeGen/CGOpenMPRuntime.cpp

emitNumTeamsForTargetDirective(CodeGenFunction &CGF,
   case OMPD_target_parallel:
   case OMPD_target_parallel_for:
   case OMPD_target_parallel_for_simd:
   case OMPD_target_simd:
     return Bld.getInt32(1);
   case OMPD_parallel:
   case OMPD_for:
   case OMPD_parallel_for:
+  case OMPD_parallel_master:
   case OMPD_parallel_sections:
   case OMPD_for_simd:
   case OMPD_parallel_for_simd:
   case OMPD_cancel:
   case OMPD_cancellation_point:
   case OMPD_ordered:
   case OMPD_threadprivate:
   case OMPD_allocate:
case OMPD_target_teams_distribute_parallel_for_simd: {
     return ThreadLimitVal;
   }
   case OMPD_target_teams_distribute_simd:
   case OMPD_target_simd:
     return Bld.getInt32(1);
   case OMPD_parallel:
   case OMPD_for:
   case OMPD_parallel_for:
+  case OMPD_parallel_master:
   case OMPD_parallel_sections:
   case OMPD_for_simd:
   case OMPD_parallel_for_simd:
   case OMPD_cancel:
   case OMPD_cancellation_point:
   case OMPD_ordered:
   case OMPD_threadprivate:
   case OMPD_allocate:
case OMPD_target_parallel_for_simd:
       return nullptr;
     case OMPD_target_teams_distribute:
     case OMPD_target_teams_distribute_simd:
     case OMPD_target_teams_distribute_parallel_for:
     case OMPD_target_teams_distribute_parallel_for_simd:
     case OMPD_parallel:
     case OMPD_for:
     case OMPD_parallel_for:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_for_simd:
     case OMPD_parallel_for_simd:
     case OMPD_cancel:
     case OMPD_cancellation_point:
     case OMPD_ordered:
     case OMPD_threadprivate:
     case OMPD_allocate:
case OMPD_target_teams_distribute_parallel_for_simd:
       CodeGenFunction::
           EmitOMPTargetTeamsDistributeParallelForSimdDeviceFunction(
               CGM, ParentName,
               cast<OMPTargetTeamsDistributeParallelForSimdDirective>(E));
       break;
     case OMPD_parallel:
     case OMPD_for:
     case OMPD_parallel_for:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_for_simd:
     case OMPD_parallel_for_simd:
     case OMPD_cancel:
     case OMPD_cancellation_point:
     case OMPD_ordered:
     case OMPD_threadprivate:
     case OMPD_allocate:
case OMPD_target_exit_data:
       break;
     case OMPD_target_update:
       RTLFn = HasNowait ? OMPRTL__tgt_target_data_update_nowait
                         : OMPRTL__tgt_target_data_update;
       break;
     case OMPD_parallel:
     case OMPD_for:
     case OMPD_parallel_for:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_for_simd:
     case OMPD_parallel_for_simd:
     case OMPD_cancel:
     case OMPD_cancellation_point:
     case OMPD_ordered:
     case OMPD_threadprivate:
     case OMPD_allocate:

clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp

if (const auto *NestedDir =
     case OMPD_target_parallel_for_simd:
     case OMPD_target_teams_distribute:
     case OMPD_target_teams_distribute_simd:
     case OMPD_target_teams_distribute_parallel_for:
     case OMPD_target_teams_distribute_parallel_for_simd:
     case OMPD_parallel:
     case OMPD_for:
     case OMPD_parallel_for:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_for_simd:
     case OMPD_parallel_for_simd:
     case OMPD_cancel:
     case OMPD_cancellation_point:
     case OMPD_ordered:
     case OMPD_threadprivate:
     case OMPD_allocate:
static bool supportsSPMDExecutionMode(ASTContext &Ctx,
   case OMPD_target_simd:
   case OMPD_target_teams_distribute_simd:
     return true;
   case OMPD_target_teams_distribute:
     return false;
   case OMPD_parallel:
   case OMPD_for:
   case OMPD_parallel_for:
+  case OMPD_parallel_master:
   case OMPD_parallel_sections:
   case OMPD_for_simd:
   case OMPD_parallel_for_simd:
   case OMPD_cancel:
   case OMPD_cancellation_point:
   case OMPD_ordered:
   case OMPD_threadprivate:
   case OMPD_allocate:
if (const auto *NestedDir =
     case OMPD_target_parallel_for:
     case OMPD_target_parallel_for_simd:
     case OMPD_target_teams_distribute_simd:
     case OMPD_target_teams_distribute_parallel_for:
     case OMPD_target_teams_distribute_parallel_for_simd:
     case OMPD_parallel:
     case OMPD_for:
     case OMPD_parallel_for:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_for_simd:
     case OMPD_parallel_for_simd:
     case OMPD_cancel:
     case OMPD_cancellation_point:
     case OMPD_ordered:
     case OMPD_threadprivate:
     case OMPD_allocate:
static bool supportsLightweightRuntime(ASTContext &Ctx,
   case OMPD_target_simd:
   case OMPD_target_teams_distribute_simd:
     return true;
   case OMPD_target_teams_distribute:
     return false;
   case OMPD_parallel:
   case OMPD_for:
   case OMPD_parallel_for:
+  case OMPD_parallel_master:
   case OMPD_parallel_sections:
   case OMPD_for_simd:
   case OMPD_parallel_for_simd:
   case OMPD_cancel:
   case OMPD_cancellation_point:
   case OMPD_ordered:
   case OMPD_threadprivate:
   case OMPD_allocate:

clang/lib/CodeGen/CGStmt.cpp

case Stmt::OMPCriticalDirectiveClass:
     EmitOMPCriticalDirective(cast<OMPCriticalDirective>(*S));
     break;
   case Stmt::OMPParallelForDirectiveClass:
     EmitOMPParallelForDirective(cast<OMPParallelForDirective>(*S));
     break;
   case Stmt::OMPParallelForSimdDirectiveClass:
     EmitOMPParallelForSimdDirective(cast<OMPParallelForSimdDirective>(*S));
     break;
+  case Stmt::OMPParallelMasterDirectiveClass:
+    EmitOMPParallelMasterDirective(cast<OMPParallelMasterDirective>(*S));
+    break;
   case Stmt::OMPParallelSectionsDirectiveClass:
     EmitOMPParallelSectionsDirective(cast<OMPParallelSectionsDirective>(*S));
     break;
   case Stmt::OMPTaskDirectiveClass:
     EmitOMPTaskDirective(cast<OMPTaskDirective>(*S));
     break;
   case Stmt::OMPTaskyieldDirectiveClass:
     EmitOMPTaskyieldDirective(cast<OMPTaskyieldDirective>(*S));

clang/lib/CodeGen/CGStmtOpenMP.cpp

void CodeGenFunction::EmitOMPSingleDirective(const OMPSingleDirective &S) {
   // init or if no 'nowait' clause was specified and no 'copyprivate' clause).
   if (!S.getSingleClause<OMPNowaitClause>() && CopyprivateVars.empty()) {
     CGM.getOpenMPRuntime().emitBarrierCall(
         *this, S.getBeginLoc(),
         S.getSingleClause<OMPNowaitClause>() ? OMPD_unknown : OMPD_single);
   }
 }
 
-void CodeGenFunction::EmitOMPMasterDirective(const OMPMasterDirective &S) {
+static void emitMaster(CodeGenFunction &CGF, const OMPExecutableDirective &S) {
   auto &&CodeGen = [&S](CodeGenFunction &CGF, PrePostActionTy &Action) {
     Action.Enter(CGF);
     CGF.EmitStmt(S.getInnermostCapturedStmt()->getCapturedStmt());
   };
+  CGF.CGM.getOpenMPRuntime().emitMasterRegion(CGF, CodeGen, S.getBeginLoc());
+}
+
+void CodeGenFunction::EmitOMPMasterDirective(const OMPMasterDirective &S) {
   OMPLexicalScope Scope(*this, S, OMPD_unknown);
-  CGM.getOpenMPRuntime().emitMasterRegion(*this, CodeGen, S.getBeginLoc());
+  emitMaster(*this, S);
 }
 
 void CodeGenFunction::EmitOMPCriticalDirective(const OMPCriticalDirective &S) {
   auto &&CodeGen = [&S](CodeGenFunction &CGF, PrePostActionTy &Action) {
     Action.Enter(CGF);
     CGF.EmitStmt(S.getInnermostCapturedStmt()->getCapturedStmt());
   };
   const Expr *Hint = nullptr;
   if (const auto *HintClause = S.getSingleClause<OMPHintClause>())
     Hint = HintClause->getHint();
auto &&CodeGen = [&S](CodeGenFunction &CGF, PrePostActionTy &Action) {
     Action.Enter(CGF);
     CGF.EmitOMPWorksharingLoop(S, S.getEnsureUpperBound(), emitForLoopBounds,
                                emitDispatchForLoopBounds);
   };
   emitCommonOMPParallelDirective(*this, S, OMPD_simd, CodeGen,
                                  emitEmptyBoundParameters);
 }
 
+void CodeGenFunction::EmitOMPParallelMasterDirective(
+    const OMPParallelMasterDirective &S) {
+  // Emit directive as a combined directive that consists of two implicit
+  // directives: 'parallel' with 'master' directive.
+  auto &&CodeGen = [&S](CodeGenFunction &CGF, PrePostActionTy &Action) {
+    Action.Enter(CGF);
+    OMPPrivateScope PrivateScope(CGF);
+    bool Copyins = CGF.EmitOMPCopyinClause(S);
+    (void)CGF.EmitOMPFirstprivateClause(S, PrivateScope);
+    if (Copyins) {
+      // Emit implicit barrier to synchronize threads and avoid data races on
+      // propagation master's thread values of threadprivate variables to local
+      // instances of that variables of all other implicit threads.
+      CGF.CGM.getOpenMPRuntime().emitBarrierCall(
+          CGF, S.getBeginLoc(), OMPD_unknown, /*EmitChecks=*/false,
+          /*ForceSimpleCall=*/true);
+    }
+    CGF.EmitOMPPrivateClause(S, PrivateScope);
+    CGF.EmitOMPReductionClauseInit(S, PrivateScope);
+    (void)PrivateScope.Privatize();
+    emitMaster(CGF, S);
+    CGF.EmitOMPReductionClauseFinal(S, /*ReductionKind=*/OMPD_parallel);
+  };
+  emitCommonOMPParallelDirective(*this, S, OMPD_master, CodeGen,
+                                 emitEmptyBoundParameters);
+  emitPostUpdateForReductionClause(*this, S,
+                                   [](CodeGenFunction &) { return nullptr; });
+}
+
 void CodeGenFunction::EmitOMPParallelSectionsDirective(
     const OMPParallelSectionsDirective &S) {
   // Emit directive as a combined directive that consists of two implicit
   // directives: 'parallel' with 'sections' directive.
   auto &&CodeGen = [&S](CodeGenFunction &CGF, PrePostActionTy &Action) {
     Action.Enter(CGF);
     CGF.EmitSections(S);
   };

clang/lib/CodeGen/CodeGenFunction.h

   void EmitOMPSectionsDirective(const OMPSectionsDirective &S);
   void EmitOMPSectionDirective(const OMPSectionDirective &S);
   void EmitOMPSingleDirective(const OMPSingleDirective &S);
   void EmitOMPMasterDirective(const OMPMasterDirective &S);
   void EmitOMPCriticalDirective(const OMPCriticalDirective &S);
   void EmitOMPParallelForDirective(const OMPParallelForDirective &S);
   void EmitOMPParallelForSimdDirective(const OMPParallelForSimdDirective &S);
   void EmitOMPParallelSectionsDirective(const OMPParallelSectionsDirective &S);
+  void EmitOMPParallelMasterDirective(const OMPParallelMasterDirective &S);
   void EmitOMPTaskDirective(const OMPTaskDirective &S);
   void EmitOMPTaskyieldDirective(const OMPTaskyieldDirective &S);
   void EmitOMPBarrierDirective(const OMPBarrierDirective &S);
   void EmitOMPTaskwaitDirective(const OMPTaskwaitDirective &S);
   void EmitOMPTaskgroupDirective(const OMPTaskgroupDirective &S);
   void EmitOMPFlushDirective(const OMPFlushDirective &S);
   void EmitOMPOrderedDirective(const OMPOrderedDirective &S);
   void EmitOMPAtomicDirective(const OMPAtomicDirective &S);

clang/lib/Parse/ParseOpenMP.cpp

enum OpenMPDirectiveKindEx {
   OMPD_target_enter,
   OMPD_target_exit,
   OMPD_update,
   OMPD_distribute_parallel,
   OMPD_teams_distribute_parallel,
   OMPD_target_teams_distribute_parallel,
   OMPD_mapper,
   OMPD_variant,
-  OMPD_parallel_master,
 };
 
 class DeclDirectiveListParserHelper final {
   SmallVector<Expr *, 4> Identifiers;
   Parser *P;
   OpenMPDirectiveKind Kind;
 
 public:
Parser::DeclGroupPtrTy Parser::ParseOpenMPDeclarativeDirectiveWithExtDecl(
   case OMPD_section:
   case OMPD_single:
   case OMPD_master:
   case OMPD_ordered:
   case OMPD_critical:
   case OMPD_parallel_for:
   case OMPD_parallel_for_simd:
   case OMPD_parallel_sections:
+  case OMPD_parallel_master:
   case OMPD_atomic:
   case OMPD_target:
   case OMPD_teams:
   case OMPD_cancellation_point:
   case OMPD_cancel:
   case OMPD_target_data:
   case OMPD_target_enter_data:
   case OMPD_target_exit_data:

 ///       declare-mapper-directive:
 ///         annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':']
 ///         <type> <var> ')' [<clause>[[,] <clause>] ... ]
 ///         annot_pragma_openmp_end
 ///
 ///       executable-directive:
 ///         annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' |
 ///         'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] |
-///         'parallel for' | 'parallel sections' | 'task' | 'taskyield' |
-///         'barrier' | 'taskwait' | 'flush' | 'ordered' | 'atomic' |
-///         'for simd' | 'parallel for simd' | 'target' | 'target data' |
-///         'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' | 'master
-///         taskloop' | 'master taskloop simd' | 'parallel master taskloop' |
-///         'parallel master taskloop simd' | 'distribute' | 'target enter data'
-///         | 'target exit data' | 'target parallel' | 'target parallel for' |
-///         'target update' | 'distribute parallel for' | 'distribute paralle
-///         for simd' | 'distribute simd' | 'target parallel for simd' | 'target
-///         simd' | 'teams distribute' | 'teams distribute simd' | 'teams
-///         distribute parallel for simd' | 'teams distribute parallel for' |
-///         'target teams' | 'target teams distribute' | 'target teams
-///         distribute parallel for' | 'target teams distribute parallel for
-///         simd' | 'target teams distribute simd' {clause}
+///         'parallel for' | 'parallel sections' | 'parallel master' | 'task' |
+///         'taskyield' | 'barrier' | 'taskwait' | 'flush' | 'ordered' |
+///         'atomic' | 'for simd' | 'parallel for simd' | 'target' | 'target
+///         data' | 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' |
+///         'master taskloop' | 'master taskloop simd' | 'parallel master
+///         taskloop' | 'parallel master taskloop simd' | 'distribute' | 'target
+///         enter data' | 'target exit data' | 'target parallel' | 'target
+///         parallel for' | 'target update' | 'distribute parallel for' |
+///         'distribute paralle for simd' | 'distribute simd' | 'target parallel
+///         for simd' | 'target simd' | 'teams distribute' | 'teams distribute
+///         simd' | 'teams distribute parallel for simd' | 'teams distribute
+///         parallel for' | 'target teams' | 'target teams distribute' | 'target
+///         teams distribute parallel for' | 'target teams distribute parallel
+///         for simd' | 'target teams distribute simd' {clause}
 ///         annot_pragma_openmp_end
 ///
 StmtResult
 Parser::ParseOpenMPDeclarativeOrExecutableDirective(ParsedStmtContext StmtCtx) {
   assert(Tok.is(tok::annot_pragma_openmp) && "Not an OpenMP directive!");
   ParenBraceBracketBalancer BalancerRAIIObj(*this);
   SmallVector<OMPClause *, 5> Clauses;
   SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>, OMPC_unknown + 1>
Parser::ParseOpenMPDeclarativeOrExecutableDirective(ParsedStmtContext StmtCtx) {
   case OMPD_sections:
   case OMPD_single:
   case OMPD_section:
   case OMPD_master:
   case OMPD_critical:
   case OMPD_parallel_for:
   case OMPD_parallel_for_simd:
   case OMPD_parallel_sections:
+  case OMPD_parallel_master:
   case OMPD_task:
   case OMPD_ordered:
   case OMPD_atomic:
   case OMPD_target:
   case OMPD_teams:
   case OMPD_taskgroup:
   case OMPD_target_data:
   case OMPD_target_parallel:

clang/lib/Sema/SemaOpenMP.cpp

 } // namespace
 
 void Sema::ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope) {
   switch (DKind) {
   case OMPD_parallel:
   case OMPD_parallel_for:
   case OMPD_parallel_for_simd:
   case OMPD_parallel_sections:
+  case OMPD_parallel_master:
   case OMPD_teams:
   case OMPD_teams_distribute:
   case OMPD_teams_distribute_simd: {
     QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
     QualType KmpInt32PtrTy =
         Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
     Sema::CapturedParamNameType Params[] = {
         std::make_pair(".global_tid.", KmpInt32PtrTy),
if (CurrentRegion == OMPD_cancellation_point ||
               ParentRegion == OMPD_teams_distribute_parallel_for ||
               ParentRegion == OMPD_target_teams_distribute_parallel_for)) ||
             (CancelRegion == OMPD_taskgroup && ParentRegion == OMPD_task) ||
             (CancelRegion == OMPD_sections &&
              (ParentRegion == OMPD_section || ParentRegion == OMPD_sections ||
               ParentRegion == OMPD_parallel_sections)));
       OrphanSeen = ParentRegion == OMPD_unknown;
     } else if (CurrentRegion == OMPD_master) {
       // OpenMP [2.16, Nesting of Regions]
       // A master region may not be closely nested inside a worksharing,
       // atomic, or explicit task region.
       NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
                           isOpenMPTaskingDirective(ParentRegion);
     } else if (CurrentRegion == OMPD_critical && CurrentName.getName()) {
       // OpenMP [2.16, Nesting of Regions]
       // A critical region may not be nested (closely or otherwise) inside a
       // critical region with the same name. Note that this restriction is not
if (CurrentRegion == OMPD_cancellation_point ||
       }
     } else if (CurrentRegion == OMPD_barrier) {
       // OpenMP [2.16, Nesting of Regions]
       // A barrier region may not be closely nested inside a worksharing,
       // explicit task, critical, ordered, atomic, or master region.
       NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
                           isOpenMPTaskingDirective(ParentRegion) ||
                           ParentRegion == OMPD_master ||
+                          ParentRegion == OMPD_parallel_master ||
                           ParentRegion == OMPD_critical ||
                           ParentRegion == OMPD_ordered;
     } else if (isOpenMPWorksharingDirective(CurrentRegion) &&
                !isOpenMPParallelDirective(CurrentRegion) &&
                !isOpenMPTeamsDirective(CurrentRegion)) {
       // OpenMP [2.16, Nesting of Regions]
       // A worksharing region may not be closely nested inside a worksharing,
       // explicit task, critical, ordered, atomic, or master region.
       NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
                           isOpenMPTaskingDirective(ParentRegion) ||
                           ParentRegion == OMPD_master ||
+                          ParentRegion == OMPD_parallel_master ||
                           ParentRegion == OMPD_critical ||
                           ParentRegion == OMPD_ordered;
       Recommend = ShouldBeInParallelRegion;
     } else if (CurrentRegion == OMPD_ordered) {
       // OpenMP [2.16, Nesting of Regions]
       // An ordered region may not be closely nested inside a critical,
       // atomic, or explicit task region.
       // An ordered region must be closely nested inside a loop region (or
Res = ActOnOpenMPParallelForDirective(ClausesWithImplicit, AStmt, StartLoc,
                                           EndLoc, VarsWithInheritedDSA);
     AllowedNameModifiers.push_back(OMPD_parallel);
     break;
   case OMPD_parallel_for_simd:
     Res = ActOnOpenMPParallelForSimdDirective(
         ClausesWithImplicit, AStmt, StartLoc, EndLoc, VarsWithInheritedDSA);
     AllowedNameModifiers.push_back(OMPD_parallel);
     break;
+  case OMPD_parallel_master:
+    Res = ActOnOpenMPParallelMasterDirective(ClausesWithImplicit, AStmt,
+                                               StartLoc, EndLoc);
+    AllowedNameModifiers.push_back(OMPD_parallel);
+    break;
   case OMPD_parallel_sections:
     Res = ActOnOpenMPParallelSectionsDirective(ClausesWithImplicit, AStmt,
                                                StartLoc, EndLoc);
     AllowedNameModifiers.push_back(OMPD_parallel);
     break;
   case OMPD_task:
     Res =
         ActOnOpenMPTaskDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc);
if (checkSimdlenSafelenSpecified(*this, Clauses))
     return StmtError();
 
   setFunctionHasBranchProtectedScope();
   return OMPParallelForSimdDirective::Create(
       Context, StartLoc, EndLoc, NestedLoopCount, Clauses, AStmt, B);
 }
 
 StmtResult
+Sema::ActOnOpenMPParallelMasterDirective(ArrayRef<OMPClause *> Clauses,
+                                         Stmt *AStmt, SourceLocation StartLoc,
+                                         SourceLocation EndLoc) {
+  if (!AStmt)
+    return StmtError();
+
+  assert(isa<CapturedStmt>(AStmt) && "Captured statement expected");
+  auto *CS = cast<CapturedStmt>(AStmt);
+  // 1.2.2 OpenMP Language Terminology
+  // Structured block - An executable statement with a single entry at the
+  // top and a single exit at the bottom.
+  // The point of exit cannot be a branch out of the structured block.
+  // longjmp() and throw() must not violate the entry/exit criteria.
+  CS->getCapturedDecl()->setNothrow();
+
+  setFunctionHasBranchProtectedScope();
+
+  return OMPParallelMasterDirective::Create(Context, StartLoc, EndLoc, Clauses,
+                                            AStmt);
+}
+
+StmtResult
 Sema::ActOnOpenMPParallelSectionsDirective(ArrayRef<OMPClause *> Clauses,
                                            Stmt *AStmt, SourceLocation StartLoc,
                                            SourceLocation EndLoc) {
   if (!AStmt)
     return StmtError();
 
   assert(isa<CapturedStmt>(AStmt) && "Captured statement expected");
   auto BaseStmt = AStmt;
case OMPC_if:
     case OMPD_teams_distribute_parallel_for_simd:
       CaptureRegion = OMPD_teams;
       break;
     case OMPD_target_update:
     case OMPD_target_enter_data:
     case OMPD_target_exit_data:
       CaptureRegion = OMPD_task;
       break;
     case OMPD_parallel_master_taskloop:
     case OMPD_parallel_master_taskloop_simd:
       if (NameModifier == OMPD_unknown || NameModifier == OMPD_taskloop)
         CaptureRegion = OMPD_parallel;
       break;
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_target:
     case OMPD_target_simd:
     case OMPD_target_teams:
     case OMPD_target_teams_distribute:
     case OMPD_target_teams_distribute_simd:
case OMPD_target_parallel_for_simd:
       break;
     case OMPD_teams_distribute_parallel_for:
     case OMPD_teams_distribute_parallel_for_simd:
     case OMPD_target_teams_distribute_parallel_for:
     case OMPD_target_teams_distribute_parallel_for_simd:
       CaptureRegion = OMPD_teams;
       break;
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_distribute_parallel_for:
     case OMPD_distribute_parallel_for_simd:
     case OMPD_parallel_master_taskloop:
     case OMPD_parallel_master_taskloop_simd:
       // Do not capture num_threads-clause expressions.
case OMPC_num_teams:
     case OMPD_parallel_master_taskloop:
     case OMPD_parallel_master_taskloop_simd:
     case OMPD_target_data:
     case OMPD_target_enter_data:
     case OMPD_target_exit_data:
     case OMPD_target_update:
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_target:
     case OMPD_target_simd:
     case OMPD_target_parallel:
     case OMPD_target_parallel_for:
     case OMPD_target_parallel_for_simd:
case OMPC_thread_limit:
     case OMPD_parallel_master_taskloop:
     case OMPD_parallel_master_taskloop_simd:
     case OMPD_target_data:
     case OMPD_target_enter_data:
     case OMPD_target_exit_data:
     case OMPD_target_update:
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_target:
     case OMPD_target_simd:
     case OMPD_target_parallel:
     case OMPD_target_parallel_for:
     case OMPD_target_parallel_for_simd:
case OMPC_schedule:
     case OMPD_teams_distribute_simd:
     case OMPD_target_teams_distribute:
     case OMPD_target_teams_distribute_simd:
     case OMPD_target:
     case OMPD_target_simd:
     case OMPD_target_parallel:
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_threadprivate:
     case OMPD_allocate:
     case OMPD_taskyield:
     case OMPD_barrier:
     case OMPD_taskwait:
     case OMPD_cancellation_point:
     case OMPD_flush:
case OMPC_dist_schedule:
     case OMPD_target_exit_data:
     case OMPD_target_update:
     case OMPD_teams:
     case OMPD_target:
     case OMPD_target_simd:
     case OMPD_target_parallel:
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_threadprivate:
     case OMPD_allocate:
     case OMPD_taskyield:
     case OMPD_barrier:
     case OMPD_taskwait:
     case OMPD_cancellation_point:
     case OMPD_flush:
case OMPC_device:
     case OMPD_taskloop:
     case OMPD_taskloop_simd:
     case OMPD_master_taskloop:
     case OMPD_master_taskloop_simd:
     case OMPD_parallel_master_taskloop:
     case OMPD_parallel_master_taskloop_simd:
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_threadprivate:
     case OMPD_allocate:
     case OMPD_taskyield:
     case OMPD_barrier:
     case OMPD_taskwait:
case OMPC_priority:
     case OMPD_teams_distribute_parallel_for_simd:
     case OMPD_teams:
     case OMPD_teams_distribute:
     case OMPD_teams_distribute_simd:
     case OMPD_distribute_parallel_for:
     case OMPD_distribute_parallel_for_simd:
     case OMPD_cancel:
     case OMPD_parallel:
+    case OMPD_parallel_master:
     case OMPD_parallel_sections:
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_threadprivate:
     case OMPD_allocate:
     case OMPD_taskyield:
     case OMPD_barrier:
     case OMPD_taskwait:

clang/lib/Sema/TreeTransform.h

StmtResult TreeTransform<Derived>::TransformOMPParallelForSimdDirective(
   getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_for_simd, DirName,
                                              nullptr, D->getBeginLoc());
   StmtResult Res = getDerived().TransformOMPExecutableDirective(D);
   getDerived().getSema().EndOpenMPDSABlock(Res.get());
   return Res;
 }
 
 template <typename Derived>
+StmtResult TreeTransform<Derived>::TransformOMPParallelMasterDirective(
+    OMPParallelMasterDirective *D) {
+  DeclarationNameInfo DirName;
+  getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_master, DirName,
+                                             nullptr, D->getBeginLoc());
+  StmtResult Res = getDerived().TransformOMPExecutableDirective(D);
+  getDerived().getSema().EndOpenMPDSABlock(Res.get());
+  return Res;
+}
+
+template <typename Derived>
 StmtResult TreeTransform<Derived>::TransformOMPParallelSectionsDirective(
     OMPParallelSectionsDirective *D) {
   DeclarationNameInfo DirName;
   getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_sections, DirName,
                                              nullptr, D->getBeginLoc());
   StmtResult Res = getDerived().TransformOMPExecutableDirective(D);
   getDerived().getSema().EndOpenMPDSABlock(Res.get());
   return Res;

clang/lib/Serialization/ASTReaderStmt.cpp

void ASTStmtReader::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
   D->setHasCancel(Record.readInt());
 }
 
 void ASTStmtReader::VisitOMPParallelForSimdDirective(
     OMPParallelForSimdDirective *D) {
   VisitOMPLoopDirective(D);
 }
 
+void ASTStmtReader::VisitOMPParallelMasterDirective(
+    OMPParallelMasterDirective *D) {
+  VisitStmt(D);
+  // The NumClauses field was read in ReadStmtFromStream.
+  Record.skipInts(1);
+  VisitOMPExecutableDirective(D);
+}
+
 void ASTStmtReader::VisitOMPParallelSectionsDirective(
     OMPParallelSectionsDirective *D) {
   VisitStmt(D);
   // The NumClauses field was read in ReadStmtFromStream.
   Record.skipInts(1);
   VisitOMPExecutableDirective(D);
   D->setHasCancel(Record.readInt());
 }
while (true) {
     case STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE: {
       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
       S = OMPParallelForSimdDirective::CreateEmpty(Context, NumClauses,
                                                    CollapsedNum, Empty);
       break;
     }
 
+    case STMT_OMP_PARALLEL_MASTER_DIRECTIVE:
+      S = OMPParallelMasterDirective::CreateEmpty(
+          Context, Record[ASTStmtReader::NumStmtFields], Empty);
+      break;
+
     case STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE:
       S = OMPParallelSectionsDirective::CreateEmpty(
           Context, Record[ASTStmtReader::NumStmtFields], Empty);
       break;
 
     case STMT_OMP_TASK_DIRECTIVE:
       S = OMPTaskDirective::CreateEmpty(
           Context, Record[ASTStmtReader::NumStmtFields], Empty);

clang/lib/Serialization/ASTWriterStmt.cpp

 }
 
 void ASTStmtWriter::VisitOMPParallelForSimdDirective(
     OMPParallelForSimdDirective *D) {
   VisitOMPLoopDirective(D);
   Code = serialization::STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE;
 }
 
+void ASTStmtWriter::VisitOMPParallelMasterDirective(
+    OMPParallelMasterDirective *D) {
+  VisitStmt(D);
+  Record.push_back(D->getNumClauses());
+  VisitOMPExecutableDirective(D);
+  Code = serialization::STMT_OMP_PARALLEL_MASTER_DIRECTIVE;
+}
+
 void ASTStmtWriter::VisitOMPParallelSectionsDirective(
     OMPParallelSectionsDirective *D) {
   VisitStmt(D);
   Record.push_back(D->getNumClauses());
   VisitOMPExecutableDirective(D);
   Record.push_back(D->hasCancel() ? 1 : 0);
   Code = serialization::STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE;
 }

clang/lib/StaticAnalyzer/Core/ExprEngine.cpp

switch (S->getStmtClass()) {
     case Stmt::OMPSectionsDirectiveClass:
     case Stmt::OMPSectionDirectiveClass:
     case Stmt::OMPSingleDirectiveClass:
     case Stmt::OMPMasterDirectiveClass:
     case Stmt::OMPCriticalDirectiveClass:
     case Stmt::OMPParallelForDirectiveClass:
     case Stmt::OMPParallelForSimdDirectiveClass:
     case Stmt::OMPParallelSectionsDirectiveClass:
+    case Stmt::OMPParallelMasterDirectiveClass:
     case Stmt::OMPTaskDirectiveClass:
     case Stmt::OMPTaskyieldDirectiveClass:
     case Stmt::OMPBarrierDirectiveClass:
     case Stmt::OMPTaskwaitDirectiveClass:
     case Stmt::OMPTaskgroupDirectiveClass:
     case Stmt::OMPFlushDirectiveClass:
     case Stmt::OMPOrderedDirectiveClass:
     case Stmt::OMPAtomicDirectiveClass:

clang/test/OpenMP/nesting_of_regions.cpp

#pragma omp parallel for simd
   for (int i = 0; i < 10; ++i)
     ;
 #pragma omp parallel
 #pragma omp parallel sections
   {
     bar();
   }
 #pragma omp parallel
+#pragma omp parallel master
+  {
+    bar();
+  }
+#pragma omp parallel
 #pragma omp task
   {
     bar();
   }
 #pragma omp parallel
   {
 #pragma omp taskyield
     bar();
#pragma omp simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp parallel sections // expected-error {{OpenMP constructs may not be nested inside a simd region}}
     {
       bar();
     }
   }
 #pragma omp simd
   for (int i = 0; i < 10; ++i) {
+#pragma omp parallel master // expected-error {{OpenMP constructs may not be nested inside a simd region}}
+    {
+      bar();
+    }
+  }
+#pragma omp simd
+  for (int i = 0; i < 10; ++i) {
 #pragma omp task // expected-error {{OpenMP constructs may not be nested inside a simd region}}
     {
       bar();
     }
   }
 #pragma omp simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp taskyield // expected-error {{OpenMP constructs may not be nested inside a simd region}}

 #pragma omp for
   for (int i = 0; i < 10; ++i) {
 #pragma omp parallel for simd
     for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp for
   for (int i = 0; i < 10; ++i) {
+#pragma omp parallel master
+    {
+      bar();
+    }
+  }
+#pragma omp for
+  for (int i = 0; i < 10; ++i) {
 #pragma omp parallel sections
     {
       bar();
     }
   }
 #pragma omp for
   for (int i = 0; i < 10; ++i) {
 #pragma omp task

 #pragma omp for simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp parallel for simd // expected-error {{OpenMP constructs may not be nested inside a simd region}}
     for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp for simd
   for (int i = 0; i < 10; ++i) {
+#pragma omp parallel master // expected-error {{OpenMP constructs may not be nested inside a simd region}}
+    {
+      bar();
+    }
+  }
+#pragma omp for simd
+  for (int i = 0; i < 10; ++i) {
 #pragma omp parallel sections // expected-error {{OpenMP constructs may not be nested inside a simd region}}
     {
       bar();
     }
   }
 #pragma omp for simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp task // expected-error {{OpenMP constructs may not be nested inside a simd region}}

 #pragma omp sections // OK
       {
         bar();
       }
     }
   }
 #pragma omp sections
   {
+#pragma omp parallel master
+    {
+      bar();
+    }
+  }
+#pragma omp sections
+  {
 #pragma omp parallel
     {
 #pragma omp master // OK
       {
         bar();
       }
 #pragma omp for // OK
       for (int i = 0; i < 10; ++i)
#pragma omp section // expected-error {{'omp section' directive must be closely nested to a sections region, not a section region}}
         bar();
       }
     }
   }
 #pragma omp sections
   {
 #pragma omp section
     {
+#pragma omp parallel master
+      bar();
+#pragma omp critical
+      bar();
+    }
+  }
+#pragma omp sections
+  {
+#pragma omp section
+    {
 #pragma omp single // expected-error {{region cannot be closely nested inside 'section' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
       bar();
 #pragma omp master // expected-error {{region cannot be closely nested inside 'section' region}}
       bar();
 #pragma omp critical
       bar();
     }
   }
#pragma omp single
   {
 #pragma omp master // expected-error {{region cannot be closely nested inside 'single' region}}
     {
       bar();
     }
   }
 #pragma omp single
   {
+#pragma omp parallel master
+    {
+      bar();
+    }
+  }
+#pragma omp single
+  {
 #pragma omp critical
     {
       bar();
     }
   }
 #pragma omp single
   {
 #pragma omp sections // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp sections' directive into a parallel region?}}

 #pragma omp sections // OK
       {
         bar();
       }
     }
   }
 #pragma omp master
   {
+#pragma omp parallel master // OK
+      {
+        bar();
+      }
+#pragma omp parallel
+    {
+#pragma omp for // OK
+      for (int i = 0; i < 10; ++i)
+        ;
+#pragma omp for simd // OK
+      for (int i = 0; i < 10; ++i)
+        ;
+#pragma omp sections // OK
+      {
+        bar();
+      }
+    }
+  }
+#pragma omp master
+  {
 #pragma omp parallel for
     for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp master
   {
 #pragma omp parallel for simd
     for (int i = 0; i < 10; ++i)

 #pragma omp sections // OK
       {
         bar();
       }
     }
   }
 #pragma omp critical
   {
+#pragma omp parallel master
+    {
+      bar();
+    }
+  }
+#pragma omp critical
+  {
 #pragma omp parallel for
     for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp critical
   {
 #pragma omp parallel for simd
     for (int i = 0; i < 10; ++i)
#pragma omp target teams distribute parallel for simd // expected-error {{OpenMP constructs may not be nested inside a simd region}}
   }
 #pragma omp parallel for simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp target teams distribute simd // expected-error {{OpenMP constructs may not be nested inside a simd region}}
     for (int j = 0; j < 10; ++j)
       ;
   }
 
+// PARALLEL MASTER DIRECTIVE
+#pragma omp parallel master
+  {
+#pragma omp for // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp simd
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp for simd // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp for simd' directive into a parallel region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp parallel
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp master // OK, though second 'master' is redundant
+    {
+      bar();
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp critical
+    {
+      bar();
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp sections // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp sections' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp parallel
+    {
+#pragma omp parallel master // OK
+      {
+        bar();
+      }
+#pragma omp for // OK
+      for (int i = 0; i < 10; ++i)
+        ;
+#pragma omp for simd // OK
+      for (int i = 0; i < 10; ++i)
+        ;
+#pragma omp sections // OK
+      {
+        bar();
+      }
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp parallel master // OK
+      {
+        bar();
+      }
+#pragma omp parallel
+    {
+#pragma omp for // OK
+      for (int i = 0; i < 10; ++i)
+        ;
+#pragma omp for simd // OK
+      for (int i = 0; i < 10; ++i)
+        ;
+#pragma omp sections // OK
+      {
+        bar();
+      }
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp parallel for
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp parallel for simd
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp parallel sections
+    {
+      bar();
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp task
+    {
+      bar();
+    }
+  }
+#pragma omp parallel master
+  {
+#pragma omp taskyield
+    bar();
+  }
+#pragma omp parallel master
+  {
+#pragma omp barrier // expected-error {{region cannot be closely nested inside 'parallel master' region}}
+    bar();
+  }
+#pragma omp parallel master
+  {
+#pragma omp taskwait
+    bar();
+  }
+#pragma omp parallel master
+  {
+#pragma omp flush
+    bar();
+  }
+#pragma omp parallel master
+  {
+#pragma omp ordered // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp ordered' directive into a for or a parallel for region with 'ordered' clause?}}
+    bar();
+  }
+#pragma omp parallel master
+  {
+#pragma omp atomic
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target parallel
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target parallel for
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target enter data map(to: a)
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target exit data map(from: a)
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp teams // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp teams' directive into a target region?}}
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp taskloop
+  for (int i = 0; i < 10; ++i)
+    ++a;
+  }
+#pragma omp parallel master
+  {
+#pragma omp distribute // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp distribute' directive into a teams region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target update to(a)
+    bar();
+  }
+#pragma omp parallel master
+  {
+#pragma omp distribute parallel for // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp distribute parallel for' directive into a teams region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp distribute parallel for simd // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp distribute parallel for simd' directive into a teams region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp distribute simd // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp distribute simd' directive into a teams region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target simd // OK
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp teams distribute // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp teams distribute' directive into a target region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp teams distribute simd // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp teams distribute simd' directive into a target region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp teams distribute parallel for simd // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp teams distribute parallel for simd' directive into a target region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp teams distribute parallel for // expected-error {{region cannot be closely nested inside 'parallel master' region; perhaps you forget to enclose 'omp teams distribute parallel for' directive into a target region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target teams // OK
+    a++;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target teams distribute // OK
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target teams distribute parallel for // OK
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target teams distribute parallel for simd // OK
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp parallel master
+  {
+#pragma omp target teams distribute simd // OK
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+
 // PARALLEL SECTIONS DIRECTIVE
 #pragma omp parallel sections
   {
 #pragma omp for // expected-error {{region cannot be closely nested inside 'parallel sections' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
     for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp parallel sections
#pragma omp master // expected-error {{OpenMP constructs may not be nested inside an atomic region}}
     {
       bar();
     }
   }
 #pragma omp atomic
   // expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
   // expected-note@+1 {{expected an expression statement}}
   {
+#pragma omp parallel master // expected-error {{OpenMP constructs may not be nested inside an atomic region}}
+    {
+      bar();
+    }
+  }
+#pragma omp atomic
+  // expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
+  // expected-note@+1 {{expected an expression statement}}
+  {
 #pragma omp critical // expected-error {{OpenMP constructs may not be nested inside an atomic region}}
     {
       bar();
     }
   }
 #pragma omp atomic
   // expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
   // expected-note@+1 {{expected an expression statement}}

 #pragma omp single
   bar();
 
 #pragma omp target parallel
 #pragma omp master
   {
     bar();
   }
+#pragma omp target
+#pragma omp parallel master
+  {
+    bar();
+  }
 #pragma omp target parallel
 #pragma omp critical
   {
     bar();
   }
 #pragma omp target parallel
 #pragma omp parallel for
   for (int i = 0; i < 10; ++i)
#pragma omp sections
     bar();
   }
 #pragma omp parallel
 #pragma omp single
   bar();
 #pragma omp parallel
 #pragma omp master
   bar();
+#pragma omp parallel master
+  bar();
 #pragma omp parallel
 #pragma omp critical
   bar();
 #pragma omp parallel
 #pragma omp parallel for
   for (int i = 0; i < 10; ++i)
     ;
 #pragma omp parallel
for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp master
   {
 #pragma omp parallel
     for (int i = 0; i < 10; ++i)
       ;
   }
+#pragma omp parallel master
+  {
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
 #pragma omp master
   {
 #pragma omp single // expected-error {{region cannot be closely nested inside 'master' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
     {
       bar();
     }
   }
 #pragma omp master

 #pragma omp sections // OK
       {
         bar();
       }
     }
   }
 #pragma omp master
   {
+#pragma omp parallel master
+    {
+      bar();
+    }
+  }
+#pragma omp master
+  {
 #pragma omp parallel for
     for (int i = 0; i < 10; ++i)
       ;
   }
 #pragma omp master
   {
 #pragma omp parallel for simd
     for (int i = 0; i < 10; ++i)

clang/test/OpenMP/parallel_master_ast_print.cpp

+// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=50 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=50 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+void foo() {}
+
+struct S1 {
+  S1(): a(0) {}
+  S1(int v) : a(v) {}
+  int a;
+  typedef int type;
+  S1& operator +(const S1&);
+  S1& operator *(const S1&);
+  S1& operator &&(const S1&);
+  S1& operator ^(const S1&);
+};
+
+template <typename T>
+class S7 : public T {
+protected:
+  T a;
+  T b[100];
+  S7() : a(0) {}
+
+public:
+  S7(typename T::type v) : a(v) {
+#pragma omp parallel master private(a) private(this->a) private(T::a)
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+#pragma omp parallel master firstprivate(a) firstprivate(this->a) firstprivate(T::a)
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+#pragma omp parallel master shared(a) shared(this->a) shared(T::a)
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+#pragma omp parallel master reduction(+ : a) reduction(*: b[:])
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+  }
+  S7 &operator=(S7 &s) {
+#pragma omp parallel master private(a) private(this->a)
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+#pragma omp parallel master firstprivate(a) firstprivate(this->a)
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+#pragma omp parallel master shared(a) shared(this->a)
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+#pragma omp parallel master reduction(&& : this->a) reduction(^: b[s.a.a])
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+    return *this;
+  }
+};
+
+// CHECK: #pragma omp parallel master private(this->a) private(this->a) private(T::a)
+// CHECK: #pragma omp parallel master firstprivate(this->a) firstprivate(this->a) firstprivate(T::a)
+// CHECK: #pragma omp parallel master shared(this->a) shared(this->a) shared(T::a)
+// CHECK: #pragma omp parallel master reduction(+: this->a) reduction(*: this->b[:])
+// CHECK: #pragma omp parallel master private(this->a) private(this->a)
+// CHECK: #pragma omp parallel master firstprivate(this->a) firstprivate(this->a)
+// CHECK: #pragma omp parallel master shared(this->a) shared(this->a)
+// CHECK: #pragma omp parallel master reduction(&&: this->a) reduction(^: this->b[s.a.a])
+// CHECK: #pragma omp parallel master private(this->a) private(this->a) private(this->S1::a)
+// CHECK: #pragma omp parallel master firstprivate(this->a) firstprivate(this->a) firstprivate(this->S1::a)
+// CHECK: #pragma omp parallel master shared(this->a) shared(this->a) shared(this->S1::a)
+// CHECK: #pragma omp parallel master reduction(+: this->a) reduction(*: this->b[:])
+
+class S8 : public S7<S1> {
+  S8() {}
+
+public:
+  S8(int v) : S7<S1>(v){
+#pragma omp parallel master private(a) private(this->a) private(S7 < S1 > ::a)
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+#pragma omp parallel master firstprivate(a) firstprivate(this->a) firstprivate(S7 < S1 > ::a)
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+#pragma omp parallel master shared(a) shared(this->a) shared(S7 < S1 > ::a)
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+#pragma omp parallel master reduction(^ : S7 < S1 > ::a) reduction(+ : S7 < S1 > ::b[ : S7 < S1 > ::a.a])
+    for (int k = 0; k < a.a; ++k)
+      ++this->a.a;
+  }
+  S8 &operator=(S8 &s) {
+#pragma omp parallel master private(a) private(this->a)
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+#pragma omp parallel master firstprivate(a) firstprivate(this->a)
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+#pragma omp parallel master shared(a) shared(this->a)
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+#pragma omp parallel master reduction(* : this->a) reduction(&&:this->b[a.a:])
+    for (int k = 0; k < s.a.a; ++k)
+      ++s.a.a;
+    return *this;
+  }
+};
+
+// CHECK: #pragma omp parallel master private(this->a) private(this->a) private(this->S7<S1>::a)
+// CHECK: #pragma omp parallel master firstprivate(this->a) firstprivate(this->a) firstprivate(this->S7<S1>::a)
+// CHECK: #pragma omp parallel master shared(this->a) shared(this->a) shared(this->S7<S1>::a)
+// CHECK: #pragma omp parallel master reduction(^: this->S7<S1>::a) reduction(+: this->S7<S1>::b[:this->S7<S1>::a.a])
+// CHECK: #pragma omp parallel master private(this->a) private(this->a)
+// CHECK: #pragma omp parallel master firstprivate(this->a) firstprivate(this->a)
+// CHECK: #pragma omp parallel master shared(this->a) shared(this->a)
+// CHECK: #pragma omp parallel master reduction(*: this->a) reduction(&&: this->b[this->a.a:])
+
+template <class T>
+struct S {
+  operator T() {return T();}
+  static T TS;
+  #pragma omp threadprivate(TS)
+};
+
+// CHECK:      template <class T> struct S {
+// CHECK:        static T TS;
+// CHECK-NEXT:   #pragma omp threadprivate(S::TS)
+// CHECK:      };
+// CHECK:      template<> struct S<int> {
+// CHECK:        static int TS;
+// CHECK-NEXT:   #pragma omp threadprivate(S<int>::TS)
+// CHECK-NEXT: }
+// CHECK:      template<> struct S<long> {
+// CHECK:        static long TS;
+// CHECK-NEXT:   #pragma omp threadprivate(S<long>::TS)
+// CHECK-NEXT: }
+
+int thrp;
+#pragma omp threadprivate(thrp)
+
+template <typename T, int C>
+T tmain(T argc, T *argv) {
+  T b = argc, c, d, e, f, g;
+  static T a;
+  S<T> s;
+  T arr[C][10], arr1[C];
+#pragma omp parallel master
+  a=2;
+#pragma omp parallel master default(none), private(argc,b) firstprivate(argv) shared (d) if (parallel:argc > 0) num_threads(C) copyin(S<T>::TS, thrp) proc_bind(master) reduction(+:c, arr1[argc]) reduction(max:e, arr[:C][0:10])
+  foo();
+#pragma omp parallel master if (C) num_threads(s) proc_bind(close) reduction(^:e, f, arr[0:C][:argc]) reduction(&& : g)
+  foo();
+  return 0;
+}
+
+// CHECK: template <typename T, int C> T tmain(T argc, T *argv) {
+// CHECK-NEXT: T b = argc, c, d, e, f, g;
+// CHECK-NEXT: static T a;
+// CHECK-NEXT: S<T> s;
+// CHECK-NEXT: T arr[C][10], arr1[C];
+// CHECK-NEXT: #pragma omp parallel master{{$}}
+// CHECK-NEXT: a = 2;
+// CHECK-NEXT: #pragma omp parallel master default(none) private(argc,b) firstprivate(argv) shared(d) if(parallel: argc > 0) num_threads(C) copyin(S<T>::TS,thrp) proc_bind(master) reduction(+: c,arr1[argc]) reduction(max: e,arr[:C][0:10])
+// CHECK-NEXT: foo()
+// CHECK-NEXT: #pragma omp parallel master if(C) num_threads(s) proc_bind(close) reduction(^: e,f,arr[0:C][:argc]) reduction(&&: g)
+// CHECK-NEXT: foo()
+// CHECK: template<> int tmain<int, 5>(int argc, int *argv) {
+// CHECK-NEXT: int b = argc, c, d, e, f, g;
+// CHECK-NEXT: static int a;
+// CHECK-NEXT: S<int> s;
+// CHECK-NEXT: int arr[5][10], arr1[5];
+// CHECK-NEXT: #pragma omp parallel master
+// CHECK-NEXT: a = 2;
+// CHECK-NEXT: #pragma omp parallel master default(none) private(argc,b) firstprivate(argv) shared(d) if(parallel: argc > 0) num_threads(5) copyin(S<int>::TS,thrp) proc_bind(master) reduction(+: c,arr1[argc]) reduction(max: e,arr[:5][0:10])
+// CHECK-NEXT: foo()
+// CHECK-NEXT: #pragma omp parallel master if(5) num_threads(s) proc_bind(close) reduction(^: e,f,arr[0:5][:argc]) reduction(&&: g)
+// CHECK-NEXT: foo()
+// CHECK: template<> long tmain<long, 1>(long argc, long *argv) {
+// CHECK-NEXT: long b = argc, c, d, e, f, g;
+// CHECK-NEXT: static long a;
+// CHECK-NEXT: S<long> s;
+// CHECK-NEXT: long arr[1][10], arr1[1];
+// CHECK-NEXT: #pragma omp parallel master
+// CHECK-NEXT: a = 2;
+// CHECK-NEXT: #pragma omp parallel master default(none) private(argc,b) firstprivate(argv) shared(d) if(parallel: argc > 0) num_threads(1) copyin(S<long>::TS,thrp) proc_bind(master) reduction(+: c,arr1[argc]) reduction(max: e,arr[:1][0:10])
+// CHECK-NEXT: foo()
+// CHECK-NEXT: #pragma omp parallel master if(1) num_threads(s) proc_bind(close) reduction(^: e,f,arr[0:1][:argc]) reduction(&&: g)
+// CHECK-NEXT: foo()
+
+enum Enum { };
+
+int main (int argc, char **argv) {
+  long x;
+  int b = argc, c, d, e, f, g;
+  static int a;
+  #pragma omp threadprivate(a)
+  int arr[10][argc], arr1[2];
+  Enum ee;
+// CHECK: Enum ee;
+#pragma omp parallel master
+// CHECK-NEXT: #pragma omp parallel master
+  a=2;
+// CHECK-NEXT: a = 2;
+#pragma omp parallel master default(none), private(argc,b) firstprivate(argv) if (parallel: argc > 0) num_threads(ee) copyin(a) proc_bind(spread) reduction(| : c, d, arr1[argc]) reduction(* : e, arr[:10][0:argc]) allocate(e)
+// CHECK-NEXT: #pragma omp parallel master default(none) private(argc,b) firstprivate(argv) if(parallel: argc > 0) num_threads(ee) copyin(a) proc_bind(spread) reduction(|: c,d,arr1[argc]) reduction(*: e,arr[:10][0:argc]) allocate(e)
+  foo();
+// CHECK-NEXT: foo();
+// CHECK-NEXT: #pragma omp parallel master allocate(e) if(b) num_threads(c) proc_bind(close) reduction(^: e,f) reduction(&&: g,arr[0:argc][:10])
+// CHECK-NEXT: foo()
+#pragma omp parallel master allocate(e) if (b) num_threads(c) proc_bind(close) reduction(^:e, f) reduction(&& : g, arr[0:argc][:10])
+  foo();
+  return tmain<int, 5>(b, &b) + tmain<long, 1>(x, &x);
+}
+
+template<typename T>
+T S<T>::TS = 0;
+
+#endif

clang/test/OpenMP/parallel_master_codegen.cpp

+// expected-no-diagnostics
+#ifndef HEADER
+#define HEADER
+
+#ifdef CK1
+///==========================================================================///
+// RUN: %clang_cc1 -DCK1 -verify -fopenmp -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefix CK1
+// RUN: %clang_cc1 -DCK1 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK1 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CK1
+
+// RUN: %clang_cc1 -DCK1 -verify -fopenmp-simd -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -DCK1 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK1 -fopenmp-simd -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
+
+// CK1-DAG: %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// CK1-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+// CK1-DAG: [[DEF_LOC:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+
+// CK1-LABEL: foo
+void foo() {}
+
+void parallel_master() {
+#pragma omp parallel master
+  foo();
+}
+
+// CK1-LABEL: define void @{{.+}}parallel_master{{.+}}
+// CK1:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[DEF_LOC]], i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*))
+
+// CK1:       define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid.)
+// CK1-NOT:   __kmpc_global_thread_num
+// CK1:       call i32 @__kmpc_master({{.+}})
+// CK1:       invoke void {{.*}}foo{{.*}}()
+// CK1-NOT:   __kmpc_global_thread_num
+// CK1:       call void @__kmpc_end_master({{.+}})
+// CK1:       call void @__clang_call_terminate
+// CK1:       unreachable
+
+#endif
+
+#ifdef CK2
+///==========================================================================///
+// RUN: %clang_cc1 -DCK2 -verify -fopenmp -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefix CK2
+// RUN: %clang_cc1 -DCK2 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK2 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CK2
+
+// RUN: %clang_cc1 -DCK2 -verify -fopenmp-simd -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -DCK2 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK2 -fopenmp-simd -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
+
+// CK2-DAG: %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// CK2-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+// CK2-DAG: [[DEF_LOC:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+
+void parallel_master_private() {
+  int a;
+#pragma omp parallel master private(a)
+  a++;
+}
+
+// CK2-LABEL: define void @{{.+}}parallel_master_private{{.+}}
+// CK2:       [[A_PRIV:%.+]] = alloca i32
+// CK2:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[DEF_LOC]], i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*))
+
+// CK2:       define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid.)
+// CK2-NOT:   __kmpc_global_thread_num
+// CK2:       call i32 @__kmpc_master({{.+}})
+// CK2:       [[A_VAL:%.+]] = load i32, i32* [[A_PRIV]]
+// CK2:       [[INC:%.+]] = add nsw i32 [[A_VAL]]
+// CK2:       store i32 [[INC]], i32* [[A_PRIV]]
+// CK2-NOT:   __kmpc_global_thread_num
+// CK2:       call void @__kmpc_end_master({{.+}})
+// CK2:       ret void
+
+#endif
+
+#ifdef CK3
+///==========================================================================///
+// RUN: %clang_cc1 -DCK3 -verify -fopenmp -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefix CK3
+// RUN: %clang_cc1 -DCK3 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK3 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CK3
+
+// RUN: %clang_cc1 -DCK3 -verify -fopenmp-simd -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -DCK3 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK3 -fopenmp-simd -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
+
+// CK3-DAG:   %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// CK3-DAG:   [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+
+void parallel_master_private() {
+  int a;
+#pragma omp parallel master default(shared)
+  a++;
+}
+
+// CK3-LABEL: define void @{{.+}}parallel_master{{.+}}
+// CK3:       [[A_VAL:%.+]] = alloca i32
+// CK3:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* {{.+}}, i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*)* [[OMP_OUTLINED:@.+]] to void 
+
+// CK3:       define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid., i32* dereferenceable(4) [[A_VAL]])
+// CK3:       %.global_tid..addr = alloca i32*
+// CK3:       %.bound_tid..addr = alloca i32*
+// CK3:       [[A_ADDR:%.+]] = alloca i32* 
+// CK3:       store i32* %.global_tid., i32** %.global_tid..addr
+// CK3:       store i32* %.bound_tid., i32** %.bound_tid..addr
+// CK3:       store i32* [[A_VAL]], i32** [[A_ADDR]]
+// CK3:       [[ZERO:%.+]] = load i32*, i32** [[A_ADDR]]
+// CK3-NOT:   __kmpc_global_thread_num
+// CK3:       call i32 @__kmpc_master({{.+}})
+// CK3:       [[FIVE:%.+]] = load i32, i32* [[ZERO]]
+// CK3:       [[INC:%.+]] = add nsw i32 [[FIVE]]
+// CK3:       store i32 [[INC]], i32* [[ZERO]]
+// CK3-NOT:   __kmpc_global_thread_num
+// CK3:       call void @__kmpc_end_master({{.+}})
+
+#endif
+
+#ifdef CK4
+///==========================================================================///
+// RUN: %clang_cc1 -DCK4 -verify -fopenmp -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefix CK4
+// RUN: %clang_cc1 -DCK4 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK4 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CK4
+
+// RUN: %clang_cc1 -DCK4 -verify -fopenmp-simd -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -DCK4 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK4 -fopenmp-simd -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
+
+// CK4-DAG: %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// CK4-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+// CK4-DAG: [[DEF_LOC:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+
+void parallel_master_firstprivate() {
+  int a;
+#pragma omp parallel master firstprivate(a)
+  a++;
+}
+
+// CK4-LABEL: define void @{{.+}}parallel_master_firstprivate{{.+}}
+// CK4:       [[A_VAL:%.+]] = alloca i32
+// CK4:       [[A_CASTED:%.+]] = alloca i64
+// CK4:       [[ZERO:%.+]] = load i32, i32* [[A_VAL]]
+// CK4:       [[CONV:%.+]] = bitcast i64* [[A_CASTED]] to i32*
+// CK4:       store i32 [[ZERO]], i32* [[CONV]]
+// CK4:       [[ONE:%.+]] = load i64, i64* [[A_CASTED]]
+// CK4:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[DEF_LOC]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i64)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*), i64 [[ONE]])
+
+// CK4:       define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias [[GLOBAL_TID:%.+]], i32* noalias [[BOUND_TID:%.+]], i64 [[A_VAL]])
+// CK4:       [[GLOBAL_TID_ADDR:%.+]] = alloca i32*
+// CK4:       [[BOUND_TID_ADDR:%.+]] = alloca i32*
+// CK4:       [[A_ADDR:%.+]] = alloca i64 
+// CK4:       store i32* [[GLOBAL_TID]], i32** [[GLOBAL_TID_ADDR]]
+// CK4:       store i32* [[BOUND_TID]], i32** [[BOUND_TID_ADDR]]
+// CK4:       store i64 [[A_VAL]], i64* [[A_ADDR]]
+// CK4:       [[CONV]] = bitcast i64* [[A_ADDR]] to i32*
+// CK4-NOT:   __kmpc_global_thread_num
+// CK4:       call i32 @__kmpc_master({{.+}})
+// CK4:       [[FOUR:%.+]] = load i32, i32* [[CONV]]
+// CK4:       [[INC:%.+]] = add nsw i32 [[FOUR]]
+// CK4:       store i32 [[INC]], i32* [[CONV]]
+// CK4-NOT:   __kmpc_global_thread_num
+// CK4:       call void @__kmpc_end_master({{.+}})
+
+#endif
+
+#ifdef CK5
+///==========================================================================///
+// RUN: %clang_cc1 -DCK5 -verify -fopenmp -fopenmp -fnoopenmp-use-tls -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefix CK5
+// RUN: %clang_cc1 -DCK5 -fopenmp -fopenmp -fnoopenmp-use-tls -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK5 -fopenmp -fopenmp -fnoopenmp-use-tls -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CK5
+
+// RUN: %clang_cc1 -DCK5 -verify -fopenmp-simd -fnoopenmp-use-tls -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -DCK5 -fopenmp-simd -fnoopenmp-use-tls -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK5 -fopenmp-simd -fnoopenmp-use-tls -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
+
+// RUN: %clang_cc1 -DCK5 -verify -fopenmp -x c++ -triple x86_64-linux -emit-llvm %s -o - | FileCheck %s -check-prefix=TLS-CHECK
+// RUN: %clang_cc1 -DCK5 -fopenmp -x c++ -std=c++11 -triple x86_64-linux -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK5 -fopenmp -x c++ -triple x86_64-linux -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s -check-prefix=TLS-CHECK
+
+// RUN: %clang_cc1 -DCK5 -verify -fopenmp-simd -x c++ -triple x86_64-linux -emit-llvm %s -o - | FileCheck --check-prefix SIMD-ONLY1 %s
+// RUN: %clang_cc1 -DCK5 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-linux -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK5 -fopenmp-simd -x c++ -triple x86_64-linux -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY1 %s
+// SIMD-ONLY1-NOT: {{__kmpc|__tgt}}
+
+// CK5-DAG: %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// CK5-DAG: [[A:@.+]] = {{.+}} i32 0
+// CK5-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+// CK5-DAG: [[DEF_LOC_1:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+// CK5-DAG: [[A_CACHE:@.+]] = common global i8** null
+// CK5-DAG: [[DEF_LOC_2:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 66, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+// TLS-CHECK-DAG: %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// TLS-CHECK-DAG: [[A:@.+]] = thread_local global i32 0
+// TLS-CHECK-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+// TLS-CHECK-DAG: [[DEF_LOC_1:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 66, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+// TLS-CHECK-DAG: [[DEF_LOC_2:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+
+int a;
+#pragma omp threadprivate(a)
+
+void parallel_master_copyin() {
+#pragma omp parallel master copyin(a)
+  a++;
+}
+
+// CK5-LABEL: define void @{{.+}}parallel_master_copyin{{.+}}
+// CK5:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[DEF_LOC_1]], i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*))
+// CK5: ret void
+// TLS-CHECK-LABEL: define void @{{.+}}parallel_master_copyin{{.+}}
+// TLS-CHECK:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[DEF_LOC_2]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*)
+// TLS-CHECK: ret void
+
+// CK5:       define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias [[GLOBAL_TID:%.+]], i32* noalias [[BOUND_TID:%.+]])
+// CK5:       [[GLOBAL_TID_ADDR:%.+]] = alloca i32*
+// CK5:       [[BOUND_TID_ADDR:%.+]] = alloca i32*
+// CK5:       store i32* [[GLOBAL_TID]], i32** [[GLOBAL_TID_ADDR]]
+// CK5:       store i32* [[BOUND_TID]], i32** [[BOUND_TID_ADDR]]
+// CK5:       [[ZERO:%.+]] = load i32*, i32** [[GLOBAL_TID_ADDR]]
+// CK5:       [[ONE:%.+]] = load i32, i32* [[ZERO]]
+// CK5:       [[TWO:%.+]] = call i8* @__kmpc_threadprivate_cached(%struct.ident_t* [[DEF_LOC_1]], i32 [[ONE]], i8* bitcast (i32* [[A]] to i8*), i64 4, i8*** [[A_CACHE]])
+// CK5:       [[THREE:%.+]] = bitcast i8* [[TWO]] to i32*
+// CK5:       [[FOUR:%.+]] = ptrtoint i32* [[THREE]] to i64
+// CK5:       [[FIVE:%.+]] = icmp ne i64 ptrtoint (i32* [[A]] to i64), [[FOUR]]
+// CK5:       br i1 [[FIVE]], label [[COPYIN_NOT_MASTER:%.+]], label [[COPYIN_NOT_MASTER_END:%.+]]
+// TLS-CHECK: define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias [[GLOBAL_TID:%.+]], i32* noalias [[BOUND_TID:%.+]], i32* {{.+}} [[A_VAR:%.+]])
+// TLS-CHECK: [[GLOBAL_TID_ADDR:%.+]] = alloca i32*
+// TLS-CHECK: [[BOUND_TID_ADDR:%.+]] = alloca i32*
+// TLS-CHECK: [[A_ADDR:%.+]] = alloca i32*
+// TLS-CHECK: store i32* [[A_VAR]], i32** [[A_ADDR]]
+// TLS-CHECK: [[ZERO:%.+]] = load i32*, i32** [[A_ADDR]]
+// TLS-CHECK: [[ONE:%.+]] = ptrtoint i32* [[ZERO]] to i64
+// TLS-CHECK: [[TWO:%.+]] = icmp ne i64 [[ONE]], ptrtoint (i32* [[A]] to i64)
+// TLS-CHECK: br i1 [[TWO]], label [[COPYIN_NOT_MASTER:%.+]], label [[COPYIN_NOT_MASTER_END:%.+]]
+
+// CK5-DAG:   [[COPYIN_NOT_MASTER]]
+// CK5-DAG:   [[SIX:%.+]] = load i32, i32* [[A]]
+// TLS-CHECK-DAG:   [[COPYIN_NOT_MASTER]]
+// TLS-CHECK-DAG:   [[THREE:%.+]] = load i32, i32* [[ZERO]]
+// TLS-CHECK-DAG:   store i32 [[THREE]], i32* [[A]]
+
+// CK5-DAG:   [[COPYIN_NOT_MASTER_END]]
+// CK5-DAG:   call void @__kmpc_barrier(%struct.ident_t* [[DEF_LOC_2]], i32 [[ONE]])
+// CK5-DAG:   [[SEVEN:%.+]] = call i32 @__kmpc_master(%struct.ident_t* [[DEF_LOC_1]], i32 [[ONE]])
+// CK5-DAG:   [[EIGHT:%.+]] = icmp ne i32 [[SEVEN]], 0
+// CK5-DAG:   br i1 %8, label [[OMP_IF_THEN:%.+]], label [[OMP_IF_END:%.+]]
+// TLS-CHECK-DAG: [[FOUR:%.+]] = load i32*, i32** [[GLOBAL_TID_ADDR:%.+]]
+// TLS-CHECK-DAG: [[FIVE:%.+]] = load i32, i32* [[FOUR]]
+// TLS-CHECK-DAG: call void @__kmpc_barrier(%struct.ident_t* [[DEF_LOC_1]], i32 [[FIVE]])
+// TLS-CHECK-DAG: [[SIX:%.+]] = load i32*, i32** [[GLOBAL_TID_ADDR]]
+// TLS-CHECK-DAG: [[SEVEN:%.+]] = load i32, i32* [[SIX]]
+// TLS-CHECK-DAG: [[EIGHT:%.+]] = call i32 @__kmpc_master(%struct.ident_t* [[DEF_LOC_2]], i32 [[SEVEN]])
+// TLS-CHECK-DAG: [[NINE:%.+]] = icmp ne i32 [[EIGHT]], 0
+// TLS-CHECK-DAG: br i1 [[NINE]], label [[OMP_IF_THEN:%.+]], label [[OMP_IF_END:%.+]]
+
+// CK5-DAG:   [[OMP_IF_THEN]]
+// CK5-DAG:   [[NINE:%.+]] = call i8* @__kmpc_threadprivate_cached(%struct.ident_t* [[DEF_LOC_1]], i32 %1, i8* bitcast (i32* [[A]] to i8*), i64 4, i8*** [[A_CACHE]])
+// CK5-DAG:   [[TEN:%.+]] = bitcast i8* [[NINE]] to i32*
+// CK5-DAG:   [[ELEVEN:%.+]] = load i32, i32* [[TEN]]
+// CK5-DAG:   [[INC:%.+]] = add nsw i32 [[ELEVEN]], 1
+// CK5-DAG:   store i32 [[INC]], i32* [[TEN]]
+// CK5-DAG:   call void @__kmpc_end_master(%struct.ident_t* [[DEF_LOC_1]], i32 [[ONE]])
+// CK5-DAG:   [[OMP_IF_END]]
+// CK5-DAG:   ret void
+
+// TLS-CHECK-DAG:   [[OMP_IF_THEN]]
+// TLS-CHECK-DAG:   [[TEN:%.+]] = load i32, i32* [[A]]
+// TLC-CHECK-DAG:   %inc = add nsw i32 [[TEN]], 1
+// TLS-CHECK-DAG:   store i32 %inc, i32* [[A]]
+// TLS-CHECK-DAG:   call void @__kmpc_end_master(%struct.ident_t* [[DEF_LOC_2]], i32 [[SEVEN]])
+// TLS-CHECK-DAG:   [[OMP_IF_END]]
+// TLS-CHECK-DAG:   ret void
+
+#endif
+#ifdef CK6
+///==========================================================================///
+// RUN: %clang_cc1 -DCK6 -verify -fopenmp -x c++ -triple x86_64-linux -emit-llvm %s -o - | FileCheck %s -check-prefix=CK6
+// RUN: %clang_cc1 -DCK6 -fopenmp -x c++ -std=c++11 -triple x86_64-linux -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK6 -fopenmp -x c++ -triple x86_64-linux -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s -check-prefix=CK6
+
+// RUN: %clang_cc1 -DCK6 -verify -fopenmp-simd -x c++ -triple x86_64-linux -emit-llvm %s -o - | FileCheck --check-prefix SIMD-ONLY1 %s
+// RUN: %clang_cc1 -DCK6 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-linux -emit-pch -o %t %s
+// RUN: %clang_cc1 -DCK6 -fopenmp-simd -x c++ -triple x86_64-linux -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY1 %s
+// SIMD-ONLY1-NOT: {{__kmpc|__tgt}}
+
+// CK6-DAG: %struct.ident_t = type { i32, i32, i32, i32, i8* }
+// CK6-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
+// CK6-DAG: [[DEF_LOC_1:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+// CK6-DAG: [[GOMP:@.+]] = common global [8 x i32] zeroinitializer
+// CK6-DAG: [[DEF_LOC_2:@.+]] = private unnamed_addr global %struct.ident_t { i32 0, i32 18, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
+
+void parallel_master_reduction() {
+  int g;
+#pragma omp parallel master reduction(+:g)
+  g = 1;
+}
+
+// CK6-LABEL: define void @{{.+}}parallel_master_reduction{{.+}}
+// CK6:       [[G_VAR:%.+]] = alloca i32
+// CK6:       call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[DEF_LOC_1]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*), i32* [[G_VAR]])
+// CK6: ret void
+
+// CK6:       define internal void [[OMP_OUTLINED]](i32* noalias [[GLOBAL_TID:%.+]], i32* noalias [[BOUND_TID:%.+]], i32* {{.+}} [[G_VAR]])
+// CK6:       %.global_tid..addr = alloca i32*
+// CK6:       %.bound_tid..addr = alloca i32*
+// CK6:       [[G_ADDR:%.+]] = alloca i32*
+// CK6:       [[G_1:%.+]] = alloca i32
+// CK6:       [[RED_LIST:%.+]] = alloca [1 x i8*]
+// CK6:       [[ZERO:%.+]] = load i32*, i32** [[G_ADDR]]
+// CK6:       [[ONE:%.+]] = load i32*, i32** %.global_tid..addr
+// CK6:       [[TWO:%.+]] = load i32, i32* [[ONE]]
+// CK6:       [[THREE:%.+]] = call i32 @__kmpc_master(%struct.ident_t* [[DEF_LOC_1]], i32 [[TWO]])
+// CK6:       [[FOUR:%.+]] = icmp ne i32 [[THREE]]
+
+// CK6:       store i32 1, i32* [[G_1]]
+// CK6:       call void @__kmpc_end_master(%struct.ident_t* [[DEF_LOC_1]], i32 [[TWO]])
+
+// CK6:       [[FIVE:%.+]] = getelementptr inbounds [1 x i8*], [1 x i8*]* [[RED_LIST]], i64 0, i64 0
+// CK6:       [[SEVEN:%.+]] = bitcast [1 x i8*]* [[RED_LIST]] to i8*
+// CK6:       [[EIGHT:%.+]] = call i32 @__kmpc_reduce_nowait(%struct.ident_t* [[DEF_LOC_2]], i32 [[TWO]], i32 1, i64 8, i8* [[SEVEN]], void (i8*, i8*)* [[RED_FUNC:@.+]], [8 x i32]* [[RED_VAR:@.+]])
+
+// switch
+// CK6:       switch i32 [[EIGHT]], label [[RED_DEFAULT:%.+]] [
+// CK6:       i32 1, label [[CASE1:%.+]]
+// CK6:       i32 2, label [[CASE2:%.+]]
+
+// case 1:
+// CK6:       [[NINE:%.+]] = load i32, i32* %0, align 4
+// CK6:       [[TEN:%.+]] = load i32, i32* [[G_1]]
+// CK6:       [[ADD:%.+]] = add nsw i32 [[NINE]], [[TEN]]
+// CK6:       store i32 [[ADD]], i32* [[ZERO]]
+// CK6:       call void @__kmpc_end_reduce_nowait(%struct.ident_t* [[DEF_LOC_2]], i32 [[TWO]], [8 x i32]* [[GOMP]])
+// CK6:       br label [[RED_DEFAULT]]
+
+// case 2:
+// CK6:       [[ELEVEN:%.+]] = load i32, i32* [[G_1]]
+// CK6:       [[TWELVE:%.+]] = atomicrmw add i32* [[ZERO]], i32 [[ELEVEN]] monotonic
+
+// CK6:       define internal void [[RED_FUNC]](i8* [[ZERO]], i8* [[ONE]])
+// CK6:       ret void
+#endif
+#endif

clang/test/OpenMP/parallel_master_copyin_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -o - %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -o - %s -Wuninitialized
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+  S2 &operator=(S2 &s2) { return *this; }
+};
+class S3 {
+  int a;
+
+public:
+  S3() : a(0) {}
+  S3 &operator=(S3 &s3) { return *this; }
+};
+class S4 {
+  int a;
+  S4();
+  S4 &operator=(const S4 &s4); // expected-note {{implicitly declared private here}}
+
+public:
+  S4(int v) : a(v) {}
+};
+class S5 {
+  int a;
+  S5() : a(0) {}
+  S5 &operator=(const S5 &s5) { return *this; } // expected-note {{implicitly declared private here}}
+
+public:
+  S5(int v) : a(v) {}
+};
+template <class T>
+class ST {
+public:
+  static T s;
+};
+
+S2 k;
+S3 h;
+S4 l(3);
+S5 m(4);
+#pragma omp threadprivate(h, k, l, m)
+
+namespace A {
+double x;
+#pragma omp threadprivate(x)
+}
+namespace B {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  int i;
+#pragma omp parallel master copyin // expected-error {{expected '(' after 'copyin'}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin() // expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(k // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(h, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(l) // expected-error {{'operator=' is a private member of 'S4'}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(argv[1]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(i) // expected-error {{copyin variable must be threadprivate}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(m) // expected-error {{'operator=' is a private member of 'S5'}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyin(ST < int > ::s, B::x) // expected-error {{copyin variable must be threadprivate}}
+  {
+    foo();
+  }
+
+  return 0;
+}

clang/test/OpenMP/parallel_master_default_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -o - %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -o - %s -Wuninitialized
+
+void foo();
+
+int main(int argc, char **argv) {
+#pragma omp parallel master default // expected-error {{expected '(' after 'default'}}
+  {
+#pragma omp parallel master default( // expected-error {{expected 'none' or 'shared' in OpenMP clause 'default'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+    {
+#pragma omp parallel master default() // expected-error {{expected 'none' or 'shared' in OpenMP clause 'default'}}
+      {
+#pragma omp parallel master default(none // expected-error {{expected ')'}} expected-note {{to match this '('}}
+        {
+#pragma omp parallel master default(shared), default(shared) // expected-error {{directive '#pragma omp parallel master' cannot contain more than one 'default' clause}}
+          {
+#pragma omp parallel master default(x) // expected-error {{expected 'none' or 'shared' in OpenMP clause 'default'}}
+            {
+              foo();
+            }
+          }
+        }
+      }
+    }
+  }
+
+#pragma omp parallel master default(none) // expected-note {{explicit data sharing attribute requested here}}
+  {
+    ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
+  }
+
+#pragma omp parallel master default(none) // expected-note {{explicit data sharing attribute requested here}}
+  {
+#pragma omp parallel master default(shared)
+    {
+      ++argc;  // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
+    }
+  }
+  return 0;
+}

clang/test/OpenMP/parallel_master_firstprivate_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd %s -Wuninitialized
+
+extern int omp_default_mem_alloc;
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+void xxx(int argc) {
+  int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
+#pragma omp parallel master firstprivate(fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
+  {
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+}
+
+struct S1; // expected-note 2 {{declared here}} expected-note 2 {{forward declaration of 'S1'}}
+extern S1 a;
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+  S2(const S2 &s2) : a(s2.a) {}
+  static float S2s;
+  static const float S2sc;
+};
+const float S2::S2sc = 0;
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+  S3 &operator=(const S3 &s3);
+
+public:
+  S3() : a(0) {}
+  S3(const S3 &s3) : a(s3.a) {}
+};
+const S3 c;
+const S3 ca[5];
+extern const int f;
+class S4 {
+  int a;
+  S4();
+  S4(const S4 &s4); // expected-note 2 {{implicitly declared private here}}
+
+public:
+  S4(int v) : a(v) {}
+};
+class S5 {
+  int a;
+  S5(const S5 &s5) : a(s5.a) {} // expected-note 4 {{implicitly declared private here}}
+
+public:
+  S5() : a(0) {}
+  S5(int v) : a(v) {}
+};
+class S6 {
+  int a;
+  S6() : a(0) {}
+
+public:
+  S6(const S6 &s6) : a(s6.a) {}
+  S6(int v) : a(v) {}
+};
+
+S3 h;
+#pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
+
+template <class I, class C>
+int foomain(int argc, char **argv) {
+  I e(4);
+  C g(5);
+  int i, z;
+  int &j = i;
+#pragma omp parallel master firstprivate // expected-error {{expected '(' after 'firstprivate'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate() // expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc) allocate , allocate(, allocate(omp_default , allocate(omp_default_mem_alloc, allocate(omp_default_mem_alloc:, allocate(omp_default_mem_alloc: argc, allocate(omp_default_mem_alloc: argv), allocate(argv) // expected-error {{expected '(' after 'allocate'}} expected-error 2 {{expected expression}} expected-error 2 {{expected ')'}} expected-error {{use of undeclared identifier 'omp_default'}} expected-note 2 {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(z, a, b) // expected-error {{firstprivate variable with incomplete type 'S1'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argv[1]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(h) // expected-error {{threadprivate or thread local variable cannot be firstprivate}}
+  {
+    foo();
+  }
+#pragma omp parallel master linear(i) // expected-error {{unexpected OpenMP clause 'linear' in directive '#pragma omp parallel master'}}
+  {
+    foo();
+  }
+#pragma omp parallel
+  {
+    int v = 0;
+    int i;
+#pragma omp parallel master firstprivate(i)
+    {
+      foo();
+    }
+    v += i;
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel private(i)
+#pragma omp parallel master firstprivate(j)
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(i)
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(g) // expected-error {{calling a private constructor of class 'S5'}}
+  {
+    foo();
+  }
+#pragma omp parallel private(i)
+#pragma omp parallel master firstprivate(i)
+  {
+    foo();
+  }
+#pragma omp parallel reduction(+ : i)
+#pragma omp parallel master firstprivate(i)
+  {
+    foo();
+  }
+  return 0;
+}
+
+namespace A {
+double x;
+#pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
+}
+namespace B {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  const int d = 5;
+  const int da[5] = {0};
+  S4 e(4);
+  S5 g(5);
+  S3 m;
+  S6 n(2);
+  int i, z;
+  int &j = i;
+#pragma omp parallel master firstprivate // expected-error {{expected '(' after 'firstprivate'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate() // expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argc, z)
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(a, b, c, d, f) // expected-error {{firstprivate variable with incomplete type 'S1'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(argv[1]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(2 * 2) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(ba) // OK
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(ca) // OK
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(da) // OK
+  {
+    foo();
+  }
+  int xa;
+#pragma omp parallel master firstprivate(xa) // OK
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(S2::S2s) // OK
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(S2::S2sc) // OK
+  {
+    foo();
+  }
+#pragma omp parallel master safelen(5) // expected-error {{unexpected OpenMP clause 'safelen' in directive '#pragma omp parallel master'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(m) // OK
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(h, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be firstprivate}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(xa), firstprivate(xa) // expected-error {{private variable cannot be firstprivate}} expected-note {{defined as private}}
+  {
+    foo();
+  }
+#pragma omp parallel shared(xa)
+#pragma omp parallel master firstprivate(xa) // OK: may be firstprivate
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(j)
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(g) // expected-error {{calling a private constructor of class 'S5'}}
+  {
+    foo();
+  }
+#pragma omp parallel master firstprivate(n) // OK
+  {
+    foo();
+  }
+#pragma omp parallel
+  {
+    int v = 0;
+    int i;
+#pragma omp parallel master firstprivate(i)
+    {
+      foo();
+    }
+    v += i;
+  }
+#pragma omp parallel private(i)
+#pragma omp parallel master firstprivate(i)
+  {
+    foo();
+  }
+#pragma omp parallel reduction(+ : i)
+#pragma omp parallel master firstprivate(i)
+  {
+    foo();
+  }
+  static int r;
+#pragma omp parallel master firstprivate(r) // OK
+  {
+    foo();
+  }
+
+  return foomain<S4, S5>(argc, argv); // expected-note {{in instantiation of function template specialization 'foomain<S4, S5>' requested here}}
+}

clang/test/OpenMP/parallel_master_if_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=45 -ferror-limit 100 %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=45 -ferror-limit 100 %s -Wuninitialized
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+void xxx(int argc) {
+  int cond; // expected-note {{initialize the variable 'cond' to silence this warning}}
+#pragma omp parallel master if(cond) // expected-warning {{variable 'cond' is uninitialized when used here}}
+  {
+    ;
+  }
+}
+
+struct S1; // expected-note {{declared here}}
+
+template <class T, class S> // expected-note {{declared here}}
+int tmain(T argc, S **argv) {
+  T z;
+  #pragma omp parallel master if // expected-error {{expected '(' after 'if'}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if () // expected-error {{expected expression}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc)) // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc > 0 ? argv[1] : argv[2])
+  {
+    foo();
+  }
+  #pragma omp parallel master if (foobool(argc)), if (true) // expected-error {{directive '#pragma omp parallel master' cannot contain more than one 'if' clause}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (S) // expected-error {{'S' does not refer to a value}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc argc) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(argc + z)
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc)
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc) if (for:argc) // expected-error {{directive name modifier 'for' is not allowed for '#pragma omp parallel master'}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc) if (parallel:argc) // expected-error {{directive '#pragma omp parallel master' cannot contain more than one 'if' clause with 'parallel' name modifier}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc) if (argc) // expected-error {{no more 'if' clause is allowed}} expected-note {{previous clause with directive name modifier specified here}}
+  {
+    foo();
+  }
+
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  int z;
+  #pragma omp parallel master if // expected-error {{expected '(' after 'if'}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if () // expected-error {{expected expression}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc)) // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc > 0 ? argv[1] : argv[2] + z)
+  {
+    foo();
+  }
+  #pragma omp parallel master if (foobool(argc)), if (true) // expected-error {{directive '#pragma omp parallel master' cannot contain more than one 'if' clause}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (argc argc) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if (1 0) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(if(tmain(argc, argv) // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc)
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc) if (for:argc) // expected-error {{directive name modifier 'for' is not allowed for '#pragma omp parallel master'}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc) if (parallel:argc) // expected-error {{directive '#pragma omp parallel master' cannot contain more than one 'if' clause with 'parallel' name modifier}}
+  {
+    foo();
+  }
+  #pragma omp parallel master if(parallel : argc) if (argc) // expected-error {{no more 'if' clause is allowed}} expected-note {{previous clause with directive name modifier specified here}}
+  {
+    foo();
+  }
+
+  return tmain(argc, argv);
+}

clang/test/OpenMP/parallel_master_message.cpp

+// RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd %s -Wuninitialized
+
+void xxx(int argc) {
+  int x; // expected-note {{initialize the variable 'x' to silence this warning}}
+#pragma omp parallel master
+  argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
+}
+
+#pragma omp parallel master // expected-error {{unexpected OpenMP directive '#pragma omp parallel master'}}
+
+int foo() { 
+  return 0;
+}
+
+int a;
+struct S;
+S& bar();
+int main(int argc, char **argv) {
+  #pragma omp parallel master nowait // expected-error {{unexpected OpenMP clause 'nowait' in directive '#pragma omp parallel master'}}
+  #pragma omp parallel master unknown // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  {
+    #pragma omp master
+  } // expected-error {{expected statement}}
+  {
+    #pragma omp parallel master
+  } // expected-error {{expected statement}}
+
+  S &s = bar();
+  #pragma omp parallel master
+  (void)&s;
+  #pragma omp parallel master { // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  #pragma omp parallel master ( // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  #pragma omp parallel master [ // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  #pragma omp parallel master ] // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  #pragma omp parallel master ) // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  #pragma omp parallel master } // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  foo();
+  #pragma omp parallel master
+  // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  #pragma omp parallel master unknown()
+  foo();
+  L1:
+    foo();
+  #pragma omp parallel master
+  ;
+  #pragma omp parallel master
+  {
+
+  for (int i = 0; i < 10; ++i) {
+    switch(argc) {
+     case (0):
+      #pragma omp parallel master
+      {
+        foo();
+        break; // expected-error {{'break' statement not in loop or switch statement}}
+        continue; // expected-error {{'continue' statement not in loop statement}}
+      }
+      default:
+       break;
+    }
+  }
+    goto L1; // expected-error {{use of undeclared label 'L1'}}
+    argc++;
+  }
+#pragma omp parallel master default(none) // expected-note 2 {{explicit data sharing attribute requested here}}
+  {
+    ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
+    ++a;    // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
+  }
+
+  goto L2; // expected-error {{use of undeclared label 'L2'}}
+  #pragma omp parallel master
+  L2:
+  foo();
+  #pragma omp parallel master
+  {
+    return 1; // expected-error {{cannot return from OpenMP region}}
+  }
+  return 0;
+}

clang/test/OpenMP/parallel_master_num_threads_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 %s -Wuninitialized
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+
+template <class T, typename S, int N> // expected-note {{declared here}}
+T tmain(T argc, S **argv) {
+  T z;
+  #pragma omp parallel master num_threads // expected-error {{expected '(' after 'num_threads'}}
+  {foo();}
+  #pragma omp parallel master num_threads ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {foo();}
+  #pragma omp parallel master num_threads () // expected-error {{expected expression}}
+  {foo();}
+  #pragma omp parallel master num_threads (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {foo();}
+  #pragma omp parallel master num_threads (argc)) // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  {foo();}
+  #pragma omp parallel master num_threads ((argc > 0) ? argv[1] : argv[2]) // expected-error 2 {{expression must have integral or unscoped enumeration type, not 'char *'}}
+  {foo();}
+  #pragma omp parallel master num_threads (foobool(argc)), num_threads (true), num_threads (-5) // expected-error 2 {{directive '#pragma omp parallel master' cannot contain more than one 'num_threads' clause}} expected-error {{argument to 'num_threads' clause must be a strictly positive integer value}}
+  {foo();}
+  #pragma omp parallel master num_threads (S) // expected-error {{'S' does not refer to a value}}
+  {foo();}
+  #pragma omp parallel master num_threads (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error 2 {{expression must have integral or unscoped enumeration type, not 'char *'}}
+  {foo();}
+  #pragma omp parallel master num_threads (argc + z)
+  {foo();}
+  #pragma omp parallel master num_threads (N) // expected-error {{argument to 'num_threads' clause must be a strictly positive integer value}}
+  {foo();}
+
+  return argc;
+}
+
+int main(int argc, char **argv) {
+  int z;
+  #pragma omp parallel master num_threads // expected-error {{expected '(' after 'num_threads'}}
+  {foo();}
+  #pragma omp parallel master num_threads ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {foo();}
+  #pragma omp parallel master num_threads () // expected-error {{expected expression}}
+  {foo();}
+  #pragma omp parallel master num_threads (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {foo();}
+  #pragma omp parallel master num_threads (argc / z)) // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  {foo();}
+  #pragma omp parallel master num_threads (argc > 0 ? argv[1] : argv[2]) // expected-error {{integral }}
+  {foo();}
+  #pragma omp parallel master num_threads (foobool(argc)), num_threads (true), num_threads (-5) // expected-error 2 {{directive '#pragma omp parallel master' cannot contain more than one 'num_threads' clause}} expected-error {{argument to 'num_threads' clause must be a strictly positive integer value}}
+  {foo();}
+  #pragma omp parallel master num_threads (S1) // expected-error {{'S1' does not refer to a value}}
+  {foo();}
+  #pragma omp parallel master num_threads (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expression must have integral or unscoped enumeration type, not 'char *'}}
+  {foo();}
+  #pragma omp parallel master num_threads (num_threads(tmain<int, char, -1>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}} expected-note {{in instantiation of function template specialization 'tmain<int, char, -1>' requested here}}
+  {foo();}
+
+  return tmain<int, char, 3>(argc, argv); // expected-note {{in instantiation of function template specialization 'tmain<int, char, 3>' requested here}}
+}

clang/test/OpenMP/parallel_master_private_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd %s -Wuninitialized
+
+extern int omp_default_mem_alloc;
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note 2 {{declared here}} expected-note 2 {{forward declaration of 'S1'}}
+extern S1 a;
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+};
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+
+public:
+  S3() : a(0) {}
+};
+const S3 ca[5];
+class S4 {
+  int a;
+  S4(); // expected-note {{implicitly declared private here}}
+
+public:
+  S4(int v) : a(v) {
+#pragma omp parallel master private(a) private(this->a)
+    {
+      for (int k = 0; k < v; ++k)
+        ++this->a;
+    }
+  }
+};
+class S5 {
+  int a;
+  S5() : a(0) {} // expected-note {{implicitly declared private here}}
+
+public:
+  S5(int v) : a(v) {}
+  S5 &operator=(S5 &s) {
+#pragma omp parallel master private(a) private(this->a) private(s.a) // expected-error {{expected variable name or data member of current class}}
+    {
+      for (int k = 0; k < s.a; ++k)
+        ++s.a;
+    }
+    return *this;
+  }
+};
+
+template <typename T>
+class S6 {
+public:
+  T a;
+
+  S6() : a(0) {}
+  S6(T v) : a(v) {
+#pragma omp parallel master private(a) private(this->a)
+    {
+      for (int k = 0; k < v; ++k)
+        ++this->a;
+    }
+  }
+  S6 &operator=(S6 &s) {
+#pragma omp parallel master private(a) private(this->a) private(s.a) // expected-error {{expected variable name or data member of current class}}
+    {
+      for (int k = 0; k < s.a; ++k)
+        ++s.a;
+    }
+    return *this;
+  }
+};
+
+template <typename T>
+class S7 : public T {
+  T a;
+  S7() : a(0) {}
+
+public:
+  S7(T v) : a(v) {
+#pragma omp parallel master private(a) private(this->a) private(T::a)
+    {
+      for (int k = 0; k < a.a; ++k)
+        ++this->a.a;
+    }
+  }
+  S7 &operator=(S7 &s) {
+#pragma omp parallel master private(a) private(this->a) private(s.a) private(s.T::a) // expected-error 2 {{expected variable name or data member of current class}}
+    {
+      for (int k = 0; k < s.a.a; ++k)
+        ++s.a.a;
+    }
+    return *this;
+  }
+};
+
+S3 h;
+#pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
+
+template <class I, class C>
+int foomain(I argc, C **argv) {
+  I e(4);
+  I g(5);
+  int i, z;
+  int &j = i;
+#pragma omp parallel master private // expected-error {{expected '(' after 'private'}}
+  {
+    foo();
+  }
+#pragma omp parallel master private( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private() // expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc) allocate , allocate(, allocate(omp_default , allocate(omp_default_mem_alloc, allocate(omp_default_mem_alloc:, allocate(omp_default_mem_alloc: argc, allocate(omp_default_mem_alloc: argv), allocate(argv) // expected-error {{expected '(' after 'allocate'}} expected-error 2 {{expected expression}} expected-error 2 {{expected ')'}} expected-error {{use of undeclared identifier 'omp_default'}} expected-note 2 {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(a, b) // expected-error {{private variable with incomplete type 'S1'}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argv[1]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(e, g, z)
+  {
+    foo();
+  }
+#pragma omp parallel master private(h) // expected-error {{threadprivate or thread local variable cannot be private}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyprivate(h) // expected-error {{unexpected OpenMP clause 'copyprivate' in directive '#pragma omp parallel master'}}
+  {
+    foo();
+  }
+#pragma omp parallel
+  {
+    int v = 0;
+    int i;
+#pragma omp parallel master private(i)
+    {
+      foo();
+    }
+    v += i;
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel private(i)
+#pragma omp parallel master private(j)
+  {
+    foo();
+  }
+#pragma omp parallel master private(i)
+  {
+    foo();
+  }
+  return 0;
+}
+
+namespace A {
+double x;
+#pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
+}
+namespace B {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  S4 e(4);
+  S5 g(5);
+  S6<float> s6(0.0) , s6_0(1.0);
+  S7<S6<float> > s7(0.0) , s7_0(1.0);
+  int i, z;
+  int &j = i;
+#pragma omp parallel master private // expected-error {{expected '(' after 'private'}}
+  {
+    foo();
+  }
+#pragma omp parallel master private( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private() // expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argc, z)
+  {
+    foo();
+  }
+#pragma omp parallel master private(S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(a, b) // expected-error {{private variable with incomplete type 'S1'}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(argv[1]) // expected-error {{expected variable name}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(h, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be private}}
+  {
+    foo();
+  }
+#pragma omp parallel master copyprivate(h) // expected-error {{unexpected OpenMP clause 'copyprivate' in directive '#pragma omp parallel master'}}
+  {
+    foo();
+  }
+#pragma omp parallel
+  {
+    int i;
+#pragma omp parallel master private(i)
+    {
+      foo();
+    }
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel private(i)
+#pragma omp parallel master private(j)
+  {
+    foo();
+  }
+#pragma omp parallel master private(i)
+  {
+    foo();
+  }
+  static int m;
+#pragma omp parallel master private(m)
+  {
+    foo();
+  }
+
+  s6 = s6_0; // expected-note {{in instantiation of member function 'S6<float>::operator=' requested here}}
+  s7 = s7_0; // expected-note {{in instantiation of member function 'S7<S6<float> >::operator=' requested here}}
+  return foomain(argc, argv); // expected-note {{in instantiation of function template specialization 'foomain<int, char>' requested here}}
+}
+

clang/test/OpenMP/parallel_master_proc_bind_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -o - %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -o - %s -Wuninitialized
+
+void foo();
+
+int main(int argc, char **argv) {
+#pragma omp parallel master proc_bind // expected-error {{expected '(' after 'proc_bind'}}
+  { foo(); }
+#pragma omp parallel master proc_bind( // expected-error {{expected 'master', 'close' or 'spread' in OpenMP clause 'proc_bind'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  { foo(); }
+#pragma omp parallel master proc_bind() // expected-error {{expected 'master', 'close' or 'spread' in OpenMP clause 'proc_bind'}}
+  { foo(); }
+#pragma omp parallel master proc_bind(master // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  { foo(); }
+#pragma omp parallel master proc_bind(close), proc_bind(spread) // expected-error {{directive '#pragma omp parallel master' cannot contain more than one 'proc_bind' clause}}
+  { foo(); }
+#pragma omp parallel master proc_bind(x) // expected-error {{expected 'master', 'close' or 'spread' in OpenMP clause 'proc_bind'}}
+  { foo(); }
+
+#pragma omp parallel master proc_bind(master)
+  { ++argc; }
+
+#pragma omp parallel master proc_bind(close)
+  {
+#pragma omp parallel master proc_bind(spread)
+    { ++argc; }
+  }
+  return 0;
+}

clang/test/OpenMP/parallel_master_reduction_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 150 -o - %s -Wuninitialized
+// RUN: %clang_cc1 -verify -fopenmp -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
+// RUN: %clang_cc1 -verify -fopenmp -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 150 -o - %s -Wuninitialized
+// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
+// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
+
+extern int omp_default_mem_alloc;
+void xxx(int argc) {
+  int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
+#pragma omp parallel master reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
+{
+  for (int i = 0; i < 10; ++i)
+    ;
+}
+}
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+void foobar(int &ref) {
+#pragma omp parallel master reduction(+:ref)
+  {
+    foo();
+  }
+}
+
+struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
+extern S1 a;
+class S2 {
+  mutable int a;
+  S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
+
+public:
+  S2() : a(0) {}
+  S2(S2 &s2) : a(s2.a) {}
+  static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
+  static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
+};
+const float S2::S2sc = 0;
+S2 b;                     // expected-note 3 {{'b' defined here}}
+const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
+class S3 {
+  int a;
+
+public:
+  int b;
+  S3() : a(0) {}
+  S3(const S3 &s3) : a(s3.a) {}
+  S3 operator+(const S3 &arg1) { return arg1; }
+};
+int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
+S3 c;               // expected-note 3 {{'c' defined here}}
+const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
+extern const int f; // expected-note 4 {{'f' declared here}}
+class S4 {
+  int a;
+  S4(); // expected-note {{implicitly declared private here}}
+  S4(const S4 &s4);
+  S4 &operator+(const S4 &arg) { return (*this); }
+
+public:
+  S4(int v) : a(v) {}
+};
+S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
+class S5 {
+  int a;
+  S5() : a(0) {} // expected-note {{implicitly declared private here}}
+  S5(const S5 &s5) : a(s5.a) {}
+  S5 &operator+(const S5 &arg);
+
+public:
+  S5(int v) : a(v) {}
+};
+class S6 { // expected-note 3 {{candidate function (the implicit copy assignment operator) not viable: no known conversion from 'int' to 'const S6' for 1st argument}}
+#if __cplusplus >= 201103L // C++11 or later
+// expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
+#endif
+  int a;
+
+public:
+  S6() : a(6) {}
+  operator int() { return 6; }
+} o;
+
+S3 h, k;
+#pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
+
+template <class T>       // expected-note {{declared here}}
+T tmain(T argc) {
+  const T d = T();       // expected-note 4 {{'d' defined here}}
+  const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
+  T qa[5] = {T()};
+  T i, z;
+  T &j = i;                             // expected-note 4 {{'j' defined here}}
+  S3 &p = k;                            // expected-note 2 {{'p' defined here}}
+  const T &r = da[(int)i];              // expected-note 2 {{'r' defined here}}
+  T &q = qa[(int)i];                    // expected-note 2 {{'q' defined here}}
+  T fl;
+#pragma omp parallel master reduction // expected-error {{expected '(' after 'reduction'}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(foo : argc) //expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'float'}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'int'}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(&& : argc) allocate , allocate(, allocate(omp_default , allocate(omp_default_mem_alloc, allocate(omp_default_mem_alloc:, allocate(omp_default_mem_alloc: argc, allocate(omp_default_mem_alloc: argv), allocate(argv) // expected-error {{expected '(' after 'allocate'}} expected-error 2 {{expected expression}} expected-error 2 {{expected ')'}} expected-error {{use of undeclared identifier 'omp_default'}} expected-note 2 {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(^ : T) // expected-error {{'T' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : z, a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 3 {{const-qualified variable cannot be reduction}} expected-error 2 {{'operator+' is a private member of 'S2'}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(min : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 4 {{arguments of OpenMP clause 'reduction' for 'min' or 'max' must be of arithmetic type}} expected-error 3 {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
+  {
+    foo();
+  }
+#pragma omp parallel private(k)
+#pragma omp parallel master reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel reduction(min : i)
+#pragma omp parallel master reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
+  {
+    foo();
+  }
+#pragma omp parallel private(fl)
+#pragma omp parallel master reduction(+ : fl)
+  {
+    foo();
+  }
+#pragma omp parallel reduction(* : fl)
+#pragma omp parallel master reduction(+ : fl)
+  {
+    foo();
+  }
+
+  return T();
+}
+
+namespace A {
+double x;
+#pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
+}
+namespace B {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  const int d = 5;       // expected-note 2 {{'d' defined here}}
+  const int da[5] = {0}; // expected-note {{'da' defined here}}
+  int qa[5] = {0};
+  S4 e(4);
+  S5 g(5);
+  int i, z;
+  int &j = i;                           // expected-note 2 {{'j' defined here}}
+  S3 &p = k;                            // expected-note 2 {{'p' defined here}}
+  const int &r = da[i];                 // expected-note {{'r' defined here}}
+  int &q = qa[i];                       // expected-note {{'q' defined here}}
+  float fl;
+#pragma omp parallel master reduction // expected-error {{expected '(' after 'reduction'}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(~ : argc) // expected-error {{expected unqualified-id}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(&& : argc)
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 2 {{const-qualified variable cannot be reduction}} expected-error {{'operator+' is a private member of 'S2'}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(min : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 2 {{arguments of OpenMP clause 'reduction' for 'min' or 'max' must be of arithmetic type}} expected-error 2 {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(& : e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{invalid operands to binary expression ('S4' and 'S4')}} expected-error {{calling a private constructor of class 'S5'}} expected-error {{invalid operands to binary expression ('S5' and 'S5')}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : o, z) // expected-error {{no viable overloaded '='}}
+  {
+    foo();
+  }
+#pragma omp parallel master private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
+  {
+    foo();
+  }
+#pragma omp parallel private(k)
+#pragma omp parallel master reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
+  {
+    foo();
+  }
+#pragma omp parallel master reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
+  {
+    foo();
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel reduction(min : i)
+#pragma omp parallel master reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
+  {
+    foo();
+  }
+#pragma omp parallel private(fl)
+#pragma omp parallel master reduction(+ : fl)
+  {
+    foo();
+  }
+#pragma omp parallel reduction(* : fl)
+#pragma omp parallel master reduction(+ : fl)
+  {
+    foo();
+  }
+  static int m;
+#pragma omp parallel master reduction(+ : m) // OK
+  {
+    foo();
+  }
+
+  return tmain(argc) + tmain(fl); // expected-note {{in instantiation of function template specialization 'tmain<int>' requested here}} expected-note {{in instantiation of function template specialization 'tmain<float>' requested here}}
+}

clang/test/OpenMP/parallel_master_shared_messages.cpp

+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 %s -Wuninitialized
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+extern S1 a;
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+  S2(S2 &s2) : a(s2.a) {}
+};
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+
+public:
+  S3() : a(0) {}
+  S3(S3 &s3) : a(s3.a) {}
+};
+const S3 c;
+const S3 ca[5];
+extern const int f;
+class S4 {
+  int a;
+  S4();
+  S4(const S4 &s4);
+
+public:
+  S4(int v) : a(v) {}
+};
+class S5 {
+  int a;
+  S5() : a(0) {}
+  S5(const S5 &s5) : a(s5.a) {}
+
+public:
+  S5(int v) : a(v) {}
+};
+
+S3 h;
+#pragma omp threadprivate(h) // expected-note {{defined as threadprivate or thread local}}
+
+namespace A {
+double x;
+#pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
+}
+namespace B {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  const int d = 5;
+  const int da[5] = {0};
+  S4 e(4);
+  S5 g(5);
+  int i, k;
+  int &j = i;
+#pragma omp parallel master shared // expected-error {{expected '(' after 'shared'}}
+  { foo(); }
+#pragma omp parallel master shared( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  { foo(); }
+#pragma omp parallel master shared() // expected-error {{expected expression}}
+  { foo(); }
+#pragma omp parallel master shared(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  { foo(); }
+#pragma omp parallel master shared(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  { foo(); }
+#pragma omp parallel master shared(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  { foo(); }
+#pragma omp parallel master shared(argc)
+  { foo(); }
+#pragma omp parallel master shared(S1) // expected-error {{'S1' does not refer to a value}}
+  { foo(); }
+#pragma omp parallel master shared(a, b, c, d, f, k)
+  { foo(); }
+#pragma omp parallel master shared(argv[1]) // expected-error {{expected variable name}}
+  { foo(); }
+#pragma omp parallel master shared(ba)
+  { foo(); }
+#pragma omp parallel master shared(ca)
+  { foo(); }
+#pragma omp parallel master shared(da)
+  { foo(); }
+#pragma omp parallel master shared(e, g)
+  { foo(); }
+#pragma omp parallel master shared(h, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be shared}}
+  { foo(); }
+#pragma omp parallel master private(i), shared(i) // expected-error {{private variable cannot be shared}} expected-note {{defined as private}}
+  { foo(); }
+#pragma omp parallel master firstprivate(i), shared(i) // expected-error {{firstprivate variable cannot be shared}} expected-note {{defined as firstprivate}}
+  { foo(); }
+#pragma omp parallel master private(i)
+  {
+#pragma omp parallel master shared(i)
+    {
+#pragma omp parallel master shared(j)
+      { foo(); }
+    }
+  }
+#pragma omp parallel master firstprivate(i)
+  {
+#pragma omp parallel master shared(i)
+    {
+#pragma omp parallel master shared(j)
+      { foo(); }
+    }
+  }
+
+  return 0;
+}

clang/tools/libclang/CIndex.cpp

public:
   void VisitOMPForSimdDirective(const OMPForSimdDirective *D);
   void VisitOMPSectionsDirective(const OMPSectionsDirective *D);
   void VisitOMPSectionDirective(const OMPSectionDirective *D);
   void VisitOMPSingleDirective(const OMPSingleDirective *D);
   void VisitOMPMasterDirective(const OMPMasterDirective *D);
   void VisitOMPCriticalDirective(const OMPCriticalDirective *D);
   void VisitOMPParallelForDirective(const OMPParallelForDirective *D);
   void VisitOMPParallelForSimdDirective(const OMPParallelForSimdDirective *D);
+  void VisitOMPParallelMasterDirective(const OMPParallelMasterDirective *D);
   void VisitOMPParallelSectionsDirective(const OMPParallelSectionsDirective *D);
   void VisitOMPTaskDirective(const OMPTaskDirective *D);
   void VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *D);
   void VisitOMPBarrierDirective(const OMPBarrierDirective *D);
   void VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *D);
   void VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *D);
   void
   VisitOMPCancellationPointDirective(const OMPCancellationPointDirective *D);
EnqueueVisitor::VisitOMPParallelForDirective(const OMPParallelForDirective *D) {
   VisitOMPLoopDirective(D);
 }
 
 void EnqueueVisitor::VisitOMPParallelForSimdDirective(
     const OMPParallelForSimdDirective *D) {
   VisitOMPLoopDirective(D);
 }
 
+void EnqueueVisitor::VisitOMPParallelMasterDirective(
+    const OMPParallelMasterDirective *D) {
+  VisitOMPExecutableDirective(D);
+}
+
 void EnqueueVisitor::VisitOMPParallelSectionsDirective(
     const OMPParallelSectionsDirective *D) {
   VisitOMPExecutableDirective(D);
 }
 
 void EnqueueVisitor::VisitOMPTaskDirective(const OMPTaskDirective *D) {
   VisitOMPExecutableDirective(D);
 }
CXString clang_getCursorKindSpelling(enum CXCursorKind Kind) {
   case CXCursor_OMPMasterDirective:
     return cxstring::createRef("OMPMasterDirective");
   case CXCursor_OMPCriticalDirective:
     return cxstring::createRef("OMPCriticalDirective");
   case CXCursor_OMPParallelForDirective:
     return cxstring::createRef("OMPParallelForDirective");
   case CXCursor_OMPParallelForSimdDirective:
     return cxstring::createRef("OMPParallelForSimdDirective");
+  case CXCursor_OMPParallelMasterDirective:
+    return cxstring::createRef("OMPParallelMasterDirective");
   case CXCursor_OMPParallelSectionsDirective:
     return cxstring::createRef("OMPParallelSectionsDirective");
   case CXCursor_OMPTaskDirective:
     return cxstring::createRef("OMPTaskDirective");
   case CXCursor_OMPTaskyieldDirective:
     return cxstring::createRef("OMPTaskyieldDirective");
   case CXCursor_OMPBarrierDirective:
     return cxstring::createRef("OMPBarrierDirective");

clang/tools/libclang/CXCursor.cpp

case Stmt::OMPCriticalDirectiveClass:
     K = CXCursor_OMPCriticalDirective;
     break;
   case Stmt::OMPParallelForDirectiveClass:
     K = CXCursor_OMPParallelForDirective;
     break;
   case Stmt::OMPParallelForSimdDirectiveClass:
     K = CXCursor_OMPParallelForSimdDirective;
     break;
+  case Stmt::OMPParallelMasterDirectiveClass:
+    K = CXCursor_OMPParallelMasterDirective;
+    break;
   case Stmt::OMPParallelSectionsDirectiveClass:
     K = CXCursor_OMPParallelSectionsDirective;
     break;
   case Stmt::OMPTaskDirectiveClass:
     K = CXCursor_OMPTaskDirective;
     break;
   case Stmt::OMPTaskyieldDirectiveClass:
     K = CXCursor_OMPTaskyieldDirective;