[OPENMP 4.1] Initial support for 'simdlen' clause.

Add parsing/sema analysis for 'simdlen' clause in simd directives. Also add check that if both 'safelen' and 'simdlen' clauses are specified, the value of 'simdlen' parameter is less than the value of 'safelen' parameter.

llvm-svn: 245692

1 files changed, 9 insertions, 3 deletions

diff --git a/clang/lib/Parse/ParseOpenMP.cpp b/clang/lib/Parse/ParseOpenMP.cpp
index beb38e10f2a..ed71917dbcb 100644
--- a/clang/lib/Parse/ParseOpenMP.cpp
+++ b/clang/lib/Parse/ParseOpenMP.cpp
@@ -396,7 +396,8 @@ bool Parser::ParseOpenMPSimpleVarList(OpenMPDirectiveKind Kind,
 ///       lastprivate-clause | reduction-clause | proc_bind-clause |
 ///       schedule-clause | copyin-clause | copyprivate-clause | untied-clause |
 ///       mergeable-clause | flush-clause | read-clause | write-clause |
-///       update-clause | capture-clause | seq_cst-clause | device-clause
+///       update-clause | capture-clause | seq_cst-clause | device-clause |
+///       simdlen-clause
 ///
 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
                                      OpenMPClauseKind CKind, bool FirstClause) {
@@ -414,6 +415,7 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
   case OMPC_final:
   case OMPC_num_threads:
   case OMPC_safelen:
+  case OMPC_simdlen:
   case OMPC_collapse:
   case OMPC_ordered:
   case OMPC_device:
@@ -422,6 +424,7 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
     //  At most one num_threads clause can appear on the directive.
     // OpenMP [2.8.1, simd construct, Restrictions]
     //  Only one safelen  clause can appear on a simd directive.
+    //  Only one simdlen  clause can appear on a simd directive.
     //  Only one collapse clause can appear on a simd directive.
     // OpenMP [2.9.1, target data construct, Restrictions]
     //  At most one device clause can appear on the directive.
@@ -513,8 +516,8 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
 }
 
 /// \brief Parsing of OpenMP clauses with single expressions like 'if',
-/// 'final', 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams' or
-/// 'thread_limit'.
+/// 'final', 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams',
+/// 'thread_limit' or 'simdlen'.
 ///
 ///    if-clause:
 ///      'if' '(' expression ')'
@@ -528,6 +531,9 @@ OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
 ///    safelen-clause:
 ///      'safelen' '(' expression ')'
 ///
+///    simdlen-clause:
+///      'simdlen' '(' expression ')'
+///
 ///    collapse-clause:
 ///      'collapse' '(' expression ')'
 ///