[OPENMP 4.5] Parsing/sema analysis for 'priority' clause.

OpenMP 4.5 defines new clause 'priority' for 'task', 'taskloop' and 'taskloop simd' directives. Added parsing and sema analysis for 'priority' clause in 'task' and 'taskloop' directives.

llvm-svn: 254398

1 files changed, 9 insertions, 3 deletions

diff --git a/clang/lib/Parse/ParseOpenMP.cpp b/clang/lib/Parse/ParseOpenMP.cpp
index 22b1d08e697..5991a28d0c0 100644
--- a/clang/lib/Parse/ParseOpenMP.cpp
+++ b/clang/lib/Parse/ParseOpenMP.cpp
@@ -397,7 +397,7 @@ bool Parser::ParseOpenMPSimpleVarList(OpenMPDirectiveKind Kind,
 ///       mergeable-clause | flush-clause | read-clause | write-clause |
 ///       update-clause | capture-clause | seq_cst-clause | device-clause |
 ///       simdlen-clause | threads-clause | simd-clause | num_teams-clause |
-///       thread_limit-clause
+///       thread_limit-clause | priority-clause
 ///
 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
                                      OpenMPClauseKind CKind, bool FirstClause) {
@@ -420,6 +420,7 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
   case OMPC_device:
   case OMPC_num_teams:
   case OMPC_thread_limit:
+  case OMPC_priority:
     // OpenMP [2.5, Restrictions]
     //  At most one num_threads clause can appear on the directive.
     // OpenMP [2.8.1, simd construct, Restrictions]
@@ -434,6 +435,8 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
     // OpenMP [teams Construct, Restrictions]
     //  At most one num_teams clause can appear on the directive.
     //  At most one thread_limit clause can appear on the directive.
+    // OpenMP [2.9.1, task Construct, Restrictions]
+    // At most one priority clause can appear on the directive.
     if (!FirstClause) {
       Diag(Tok, diag::err_omp_more_one_clause)
           << getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
@@ -523,8 +526,8 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
 }
 
 /// \brief Parsing of OpenMP clauses with single expressions like 'final',
-/// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams', 'thread_limit'
-/// or 'simdlen'.
+/// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams',
+/// 'thread_limit', 'simdlen' or 'priority'.
 ///
 ///    final-clause:
 ///      'final' '(' expression ')'
@@ -541,6 +544,9 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
 ///    collapse-clause:
 ///      'collapse' '(' expression ')'
 ///
+///    priority-clause:
+///      'priority' '(' expression ')'
+///
 OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind) {
   SourceLocation Loc = ConsumeToken();