[gcc/devel/omp/gcc-11] OpenMP: Add support for 'close' in map clause

[gcc/devel/omp/gcc-11] OpenMP: Add support for 'close' in map clause

[Tobias Burnus]

https://gcc.gnu.org/g:c24342b9bd52cfba170a5a5e105a780db7ed5d29

commit c24342b9bd52cfba170a5a5e105a780db7ed5d29
Author: Marcel Vollweiler <marcel@codesourcery.com>
Date:   Fri May 14 10:15:38 2021 +0200

    OpenMP: Add support for 'close' in map clause
    
    gcc/c/ChangeLog:
    
            * c-parser.c (c_parser_omp_clause_map): Support map-type-modifier
            'close'.
    
    gcc/cp/ChangeLog:
    
            * parser.c (cp_parser_omp_clause_map): Support map-type-modifier
            'close'.
    
    gcc/testsuite/ChangeLog:
    
            * c-c++-common/gomp/map-6.c: New test.
            * c-c++-common/gomp/map-7.c: New test.
    
    (cherry picked from commit fa6894ec9ce25f5aff10ec176212383f5c88b1ec)

Diff:
---
 gcc/ChangeLog.omp                       |  16 ++++
 gcc/c/ChangeLog.omp                     |  32 +++++---
 gcc/c/c-parser.c                        | 116 +++++++++++++--------------
 gcc/cp/ChangeLog.omp                    |   8 ++
 gcc/cp/parser.c                         |  90 ++++++++++++++++-----
 gcc/testsuite/ChangeLog.omp             |   8 ++
 gcc/testsuite/c-c++-common/gomp/map-6.c | 135 ++++++++++++++++++++++++++++++++
 gcc/testsuite/c-c++-common/gomp/map-7.c |  20 +++++
 8 files changed, 335 insertions(+), 90 deletions(-)

diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp
index 5fedea5a7ae..799a018c61b 100644
--- a/gcc/ChangeLog.omp
+++ b/gcc/ChangeLog.omp
@@ -1,7 +1,23 @@
 2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backported from master:
+	2021-05-12  Tom de Vries  <tdevries@suse.de>
+
+	PR target/96005
+	* config/nvptx/nvptx-opts.h (enum ptx_version): New enum.
+	* config/nvptx/nvptx.c (nvptx_file_start): Print .version according
+	to ptx_version_option.
+	* config/nvptx/nvptx.h (TARGET_PTX_6_3): Define.
+	* config/nvptx/nvptx.md (define_insn "nvptx_shuffle<mode>")
+	(define_insn "nvptx_vote_ballot"): Use sync variant for
+	TARGET_PTX_6_3.
+	* config/nvptx/nvptx.opt (ptx_version): Add enum.
+	(mptx): Add option.
+	* doc/invoke.texi (Nvidia PTX Options): Add mptx item.
 
+2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backported from master:
 	2021-05-07  Tobias Burnus  <tobias@codesourcery.com>
 		    Tom de Vries  <tdevries@suse.de>
 
diff --git a/gcc/c/ChangeLog.omp b/gcc/c/ChangeLog.omp
index ed366d518c4..f61d83aece7 100644
--- a/gcc/c/ChangeLog.omp
+++ b/gcc/c/ChangeLog.omp
@@ -1,3 +1,11 @@
+2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backported from master:
+	2021-05-12  Marcel Vollweiler  <marcel@codesourcery.com>
+
+	* c-parser.c (c_parser_omp_clause_map): Support map-type-modifier
+	'close'.
+
 2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backported from master:
@@ -25,22 +33,22 @@
 	nvptx_expand_to_rtl_hook.
 
 2018-12-13  Cesar Philippidis  <cesar@codesourcery.com>
-            Nathan Sidwell  <nathan@acm.org>
-            Julian Brown  <julian@codesourcery.com>
+	    Nathan Sidwell  <nathan@acm.org>
+	    Julian Brown  <julian@codesourcery.com>
 
-        * c-parser.c (c_parser_omp_variable_list): New c_omp_region_type
-        argument.  Use it to specialize handling of OMP_CLAUSE_REDUCTION for
-        OpenACC.
+	* c-parser.c (c_parser_omp_variable_list): New c_omp_region_type
+	argument.  Use it to specialize handling of OMP_CLAUSE_REDUCTION for
+	OpenACC.
 	(c_parser_oacc_data_clause): Add region-type argument.
 	(c_parser_oacc_data_clause_deviceptr): Likewise.
-        (c_parser_omp_clause_reduction): Change is_omp boolean parameter to
-        c_omp_region_type.  Update call to c_parser_omp_variable_list.
-        (c_parser_oacc_all_clauses): Update calls to
-        c_parser_omp_clause_reduction.
-        (c_parser_omp_all_clauses): Likewise.
+	(c_parser_omp_clause_reduction): Change is_omp boolean parameter to
+	c_omp_region_type.  Update call to c_parser_omp_variable_list.
+	(c_parser_oacc_all_clauses): Update calls to
+	c_parser_omp_clause_reduction.
+	(c_parser_omp_all_clauses): Likewise.
 	(c_parser_oacc_cache): Update call to c_parser_omp_var_list_parens.
-        * c-typeck.c (c_finish_omp_clauses): Emit an error on orphan OpenACC
-        gang reductions.  Suppress user-defined reduction error for OpenACC.
+	* c-typeck.c (c_finish_omp_clauses): Emit an error on orphan OpenACC
+	gang reductions.  Suppress user-defined reduction error for OpenACC.
 
 2018-10-02  Thomas Schwinge  <thomas@codesourcery.com>
 	    Cesar Philippidis  <cesar@codesourcery.com>
diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
index 8c91822ef1e..944d503bcfc 100644
--- a/gcc/c/c-parser.c
+++ b/gcc/c/c-parser.c
@@ -15659,54 +15659,83 @@ c_parser_omp_clause_depend (c_parser *parser, tree list)
    map-kind:
      alloc | to | from | tofrom | release | delete
 
-   map ( always [,] map-kind: variable-list ) */
+   map ( always [,] map-kind: variable-list )
+
+   OpenMP 5.0:
+   map ( [map-type-modifier[,] ...] map-kind: variable-list )
+
+   map-type-modifier:
+     always | close */
 
 static tree
 c_parser_omp_clause_map (c_parser *parser, tree list)
 {
   location_t clause_loc = c_parser_peek_token (parser)->location;
   enum gomp_map_kind kind = GOMP_MAP_TOFROM;
-  int always = 0;
-  enum c_id_kind always_id_kind = C_ID_NONE;
-  location_t always_loc = UNKNOWN_LOCATION;
-  tree always_id = NULL_TREE;
   tree nl, c;
 
   matching_parens parens;
   if (!parens.require_open (parser))
     return list;
 
-  if (c_parser_next_token_is (parser, CPP_NAME))
+  int pos = 1;
+  int map_kind_pos = 0;
+  while (c_parser_peek_nth_token_raw (parser, pos)->type == CPP_NAME)
+    {
+      if (c_parser_peek_nth_token_raw (parser, pos + 1)->type == CPP_COLON)
+	{
+	  map_kind_pos = pos;
+	  break;
+	}
+
+      if (c_parser_peek_nth_token_raw (parser, pos + 1)->type == CPP_COMMA)
+	pos++;
+      pos++;
+    }
+
+  int always_modifier = 0;
+  int close_modifier = 0;
+  for (int pos = 1; pos < map_kind_pos; ++pos)
     {
       c_token *tok = c_parser_peek_token (parser);
+
+      if (tok->type == CPP_COMMA)
+	{
+	  c_parser_consume_token (parser);
+	  continue;
+	}
+
       const char *p = IDENTIFIER_POINTER (tok->value);
-      always_id_kind = tok->id_kind;
-      always_loc = tok->location;
-      always_id = tok->value;
       if (strcmp ("always", p) == 0)
 	{
-	  c_token *sectok = c_parser_peek_2nd_token (parser);
-	  if (sectok->type == CPP_COMMA)
+	  if (always_modifier)
 	    {
-	      c_parser_consume_token (parser);
-	      c_parser_consume_token (parser);
-	      always = 2;
+	      c_parser_error (parser, "too many %<always%> modifiers");
+	      parens.skip_until_found_close (parser);
+	      return list;
 	    }
-	  else if (sectok->type == CPP_NAME)
+	  always_modifier++;
+	}
+      else if (strcmp ("close", p) == 0)
+	{
+	  if (close_modifier)
 	    {
-	      p = IDENTIFIER_POINTER (sectok->value);
-	      if (strcmp ("alloc", p) == 0
-		  || strcmp ("to", p) == 0
-		  || strcmp ("from", p) == 0
-		  || strcmp ("tofrom", p) == 0
-		  || strcmp ("release", p) == 0
-		  || strcmp ("delete", p) == 0)
-		{
-		  c_parser_consume_token (parser);
-		  always = 1;
-		}
+	      c_parser_error (parser, "too many %<close%> modifiers");
+	      parens.skip_until_found_close (parser);
+	      return list;
 	    }
+	  close_modifier++;
 	}
+      else
+	{
+	  c_parser_error (parser, "%<#pragma omp target%> with "
+				  "modifier other than %<always%> or %<close%>"
+				  "on %<map%> clause");
+	  parens.skip_until_found_close (parser);
+	  return list;
+	}
+
+	c_parser_consume_token (parser);
     }
 
   if (c_parser_next_token_is (parser, CPP_NAME)
@@ -15716,11 +15745,11 @@ c_parser_omp_clause_map (c_parser *parser, tree list)
       if (strcmp ("alloc", p) == 0)
 	kind = GOMP_MAP_ALLOC;
       else if (strcmp ("to", p) == 0)
-	kind = always ? GOMP_MAP_ALWAYS_TO : GOMP_MAP_TO;
+	kind = always_modifier ? GOMP_MAP_ALWAYS_TO : GOMP_MAP_TO;
       else if (strcmp ("from", p) == 0)
-	kind = always ? GOMP_MAP_ALWAYS_FROM : GOMP_MAP_FROM;
+	kind = always_modifier ? GOMP_MAP_ALWAYS_FROM : GOMP_MAP_FROM;
       else if (strcmp ("tofrom", p) == 0)
-	kind = always ? GOMP_MAP_ALWAYS_TOFROM : GOMP_MAP_TOFROM;
+	kind = always_modifier ? GOMP_MAP_ALWAYS_TOFROM : GOMP_MAP_TOFROM;
       else if (strcmp ("release", p) == 0)
 	kind = GOMP_MAP_RELEASE;
       else if (strcmp ("delete", p) == 0)
@@ -15735,35 +15764,6 @@ c_parser_omp_clause_map (c_parser *parser, tree list)
       c_parser_consume_token (parser);
       c_parser_consume_token (parser);
     }
-  else if (always)
-    {
-      if (always_id_kind != C_ID_ID)
-	{
-	  c_parser_error (parser, "expected identifier");
-	  parens.skip_until_found_close (parser);
-	  return list;
-	}
-
-      tree t = lookup_name (always_id);
-      if (t == NULL_TREE)
-	{
-	  undeclared_variable (always_loc, always_id);
-	  t = error_mark_node;
-	}
-      if (t != error_mark_node)
-	{
-	  tree u = build_omp_clause (clause_loc, OMP_CLAUSE_MAP);
-	  OMP_CLAUSE_DECL (u) = t;
-	  OMP_CLAUSE_CHAIN (u) = list;
-	  OMP_CLAUSE_SET_MAP_KIND (u, kind);
-	  list = u;
-	}
-      if (always == 1)
-	{
-	  parens.skip_until_found_close (parser);
-	  return list;
-	}
-    }
 
   nl = c_parser_omp_variable_list (parser, clause_loc, OMP_CLAUSE_MAP, list,
 				   C_ORT_OMP, true);
diff --git a/gcc/cp/ChangeLog.omp b/gcc/cp/ChangeLog.omp
index 8e6fa988467..3718a548610 100644
--- a/gcc/cp/ChangeLog.omp
+++ b/gcc/cp/ChangeLog.omp
@@ -1,3 +1,11 @@
+2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backported from master:
+	2021-05-12  Marcel Vollweiler  <marcel@codesourcery.com>
+
+	* parser.c (cp_parser_omp_clause_map): Support map-type-modifier
+	'close'.
+
 2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backported from master:
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 8910ebe5124..6da9cdb9392 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -37859,40 +37859,90 @@ cp_parser_omp_clause_depend (cp_parser *parser, tree list, location_t loc)
    map-kind:
      alloc | to | from | tofrom | release | delete
 
-   map ( always [,] map-kind: variable-list ) */
+   map ( always [,] map-kind: variable-list )
+
+   OpenMP 5.0:
+   map ( [map-type-modifier[,] ...] map-kind: variable-list )
+
+   map-type-modifier:
+     always | close */
 
 static tree
 cp_parser_omp_clause_map (cp_parser *parser, tree list)
 {
   tree nlist, c;
   enum gomp_map_kind kind = GOMP_MAP_TOFROM;
-  bool always = false;
 
   if (!cp_parser_require (parser, CPP_OPEN_PAREN, RT_OPEN_PAREN))
     return list;
 
-  if (cp_lexer_next_token_is (parser->lexer, CPP_NAME))
+  int pos = 1;
+  int map_kind_pos = 0;
+  while (cp_lexer_peek_nth_token (parser->lexer, pos)->type == CPP_NAME
+	 || cp_lexer_peek_nth_token (parser->lexer, pos)->keyword == RID_DELETE)
     {
-      tree id = cp_lexer_peek_token (parser->lexer)->u.value;
-      const char *p = IDENTIFIER_POINTER (id);
+      if (cp_lexer_peek_nth_token (parser->lexer, pos + 1)->type == CPP_COLON)
+	{
+	  map_kind_pos = pos;
+	  break;
+	}
+
+      if (cp_lexer_peek_nth_token (parser->lexer, pos + 1)->type == CPP_COMMA)
+	pos++;
+      pos++;
+    }
 
+  bool always_modifier = false;
+  bool close_modifier = false;
+  for (int pos = 1; pos < map_kind_pos; ++pos)
+    {
+      cp_token *tok = cp_lexer_peek_token (parser->lexer);
+      if (tok->type == CPP_COMMA)
+	{
+	  cp_lexer_consume_token (parser->lexer);
+	  continue;
+	}
+
+      const char *p = IDENTIFIER_POINTER (tok->u.value);
       if (strcmp ("always", p) == 0)
 	{
-	  int nth = 2;
-	  if (cp_lexer_peek_nth_token (parser->lexer, 2)->type == CPP_COMMA)
-	    nth++;
-	  if ((cp_lexer_peek_nth_token (parser->lexer, nth)->type == CPP_NAME
-	       || (cp_lexer_peek_nth_token (parser->lexer, nth)->keyword
-		   == RID_DELETE))
-	      && (cp_lexer_peek_nth_token (parser->lexer, nth + 1)->type
-		  == CPP_COLON))
+	  if (always_modifier)
 	    {
-	      always = true;
-	      cp_lexer_consume_token (parser->lexer);
-	      if (nth == 3)
-		cp_lexer_consume_token (parser->lexer);
+	      cp_parser_error (parser, "too many %<always%> modifiers");
+	      cp_parser_skip_to_closing_parenthesis (parser,
+						     /*recovering=*/true,
+						     /*or_comma=*/false,
+						     /*consume_paren=*/true);
+	      return list;
+	    }
+	  always_modifier = true;
+	}
+      else if (strcmp ("close", p) == 0)
+	{
+	  if (close_modifier)
+	    {
+	      cp_parser_error (parser, "too many %<close%> modifiers");
+	      cp_parser_skip_to_closing_parenthesis (parser,
+						     /*recovering=*/true,
+						     /*or_comma=*/false,
+						     /*consume_paren=*/true);
+	      return list;
 	    }
+	  close_modifier = true;
 	}
+      else
+	{
+	  cp_parser_error (parser, "%<#pragma omp target%> with "
+				   "modifier other than %<always%> or %<close%>"
+				   "on %<map%> clause");
+	  cp_parser_skip_to_closing_parenthesis (parser,
+						 /*recovering=*/true,
+						 /*or_comma=*/false,
+						 /*consume_paren=*/true);
+	  return list;
+	}
+
+	cp_lexer_consume_token (parser->lexer);
     }
 
   if (cp_lexer_next_token_is (parser->lexer, CPP_NAME)
@@ -37904,11 +37954,11 @@ cp_parser_omp_clause_map (cp_parser *parser, tree list)
       if (strcmp ("alloc", p) == 0)
 	kind = GOMP_MAP_ALLOC;
       else if (strcmp ("to", p) == 0)
-	kind = always ? GOMP_MAP_ALWAYS_TO : GOMP_MAP_TO;
+	kind = always_modifier ? GOMP_MAP_ALWAYS_TO : GOMP_MAP_TO;
       else if (strcmp ("from", p) == 0)
-	kind = always ? GOMP_MAP_ALWAYS_FROM : GOMP_MAP_FROM;
+	kind = always_modifier ? GOMP_MAP_ALWAYS_FROM : GOMP_MAP_FROM;
       else if (strcmp ("tofrom", p) == 0)
-	kind = always ? GOMP_MAP_ALWAYS_TOFROM : GOMP_MAP_TOFROM;
+	kind = always_modifier ? GOMP_MAP_ALWAYS_TOFROM : GOMP_MAP_TOFROM;
       else if (strcmp ("release", p) == 0)
 	kind = GOMP_MAP_RELEASE;
       else
diff --git a/gcc/testsuite/ChangeLog.omp b/gcc/testsuite/ChangeLog.omp
index 01b68bdf790..040716a0096 100644
--- a/gcc/testsuite/ChangeLog.omp
+++ b/gcc/testsuite/ChangeLog.omp
@@ -1,3 +1,11 @@
+2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backported from master:
+	2021-05-12  Marcel Vollweiler  <marcel@codesourcery.com>
+
+	* c-c++-common/gomp/map-6.c: New test.
+	* c-c++-common/gomp/map-7.c: New test.
+
 2021-05-14  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backported from master:
diff --git a/gcc/testsuite/c-c++-common/gomp/map-6.c b/gcc/testsuite/c-c++-common/gomp/map-6.c
new file mode 100644
index 00000000000..6ee59714847
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/gomp/map-6.c
@@ -0,0 +1,135 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-fdump-tree-original" } */
+
+void
+foo (void)
+{
+  /* Test to ensure that the close modifier is parsed and ignored in map clauses. */
+  int a, b, b1, b2, b3, b4, b5, b6, b7;
+
+  #pragma omp target map (a)
+  ;
+
+  #pragma omp target map (to:a)
+  ;
+
+  #pragma omp target map (a to: b) /* { dg-error "'#pragma omp target' with modifier other than 'always' or 'close'" } */
+  ;
+
+  #pragma omp target map (close, a to: b) /* { dg-error "'#pragma omp target' with modifier other than 'always' or 'close'" } */
+  ;
+
+  #pragma omp target map (close a) /* { dg-error "'close' undeclared" "" { target c } } */ 
+  /* { dg-error "'close' has not been declared" "" { target c++ } .-1 } */ 
+  /* { dg-error "expected '\\)' before 'a'" "" { target *-*-* } .-2 } */
+  ;
+
+  #pragma omp target map (always a) /* { dg-error "'always' undeclared" "" { target c } } */
+  /* { dg-error "'always' has not been declared" "" { target c++ } .-1 } */ 
+  /* { dg-error "expected '\\)' before 'a'" "" { target *-*-* } .-2 } */
+  ;
+
+  #pragma omp target map (close to:a)
+  ;
+
+  #pragma omp target map (close, to:a)
+  ;
+
+  #pragma omp target map (close delete:a) /* { dg-error "'#pragma omp target' with map-type other than 'to', 'from', 'tofrom' or 'alloc' on 'map' clause" } */
+  ;
+
+  #pragma omp target map (close always to:b1)
+  ;
+
+  #pragma omp target map (close, always to:b2)
+  ;
+
+  #pragma omp target map (close, always, to:b3)
+  ;
+
+  #pragma omp target map (always close to:b4)
+  ;
+
+  #pragma omp target map (always, close to:b5)
+  ;
+
+  #pragma omp target map (always, close, to:b6)
+  ;
+
+  #pragma omp target map (always, always, to:a) /* { dg-error "too many 'always' modifiers" } */
+  ;
+
+  #pragma omp target map (always always, to:a) /* { dg-error "too many 'always' modifiers" } */
+  ;
+
+  #pragma omp target map (always, always to:a) /* { dg-error "too many 'always' modifiers" } */
+  ;
+
+  #pragma omp target map (always always to:a) /* { dg-error "too many 'always' modifiers" } */
+  ;
+
+  #pragma omp target map (close, close, to:a) /* { dg-error "too many 'close' modifiers" } */
+  ;
+
+  #pragma omp target map (close close, to:a) /* { dg-error "too many 'close' modifiers" } */
+  ;
+
+  #pragma omp target map (close, close to:a) /* { dg-error "too many 'close' modifiers" } */
+  ;
+
+  #pragma omp target map (close close to:a) /* { dg-error "too many 'close' modifiers" } */
+  ;
+
+  #pragma omp target map (always to : a) map (close to : b)
+  ;
+
+  int close = 0;
+  #pragma omp target map (close) 
+  ;
+
+  #pragma omp target map (close a) /* { dg-error "expected '\\)' before 'a'" } */ 
+  ;
+
+  int always = 0;
+  #pragma omp target map (always)
+  ;
+
+  #pragma omp target map (always a) /* { dg-error "expected '\\)' before 'a'" } */
+  ;
+
+  #pragma omp target map (always, close)
+  ;
+
+  #pragma omp target map (always, always)  /* { dg-error "'always' appears more than once in map clauses" } */
+  ;
+
+  #pragma omp target map (always, always, close)  /* { dg-error "'always' appears more than once in map clauses" } */
+  ;
+
+  #pragma omp target map (always, close, to: always, close, b7)
+  ;
+
+  int to = 0;
+  #pragma omp target map (always, close, to)
+  ;
+
+  #pragma omp target map (to, always, close)
+    {
+      to = always = close = 1;
+    }
+  if (to != 1 || always != 1 || close != 1)
+    __builtin_abort ();
+  ;
+}
+
+/* { dg-final { scan-tree-dump-not "map\\(\[^\n\r)]*close\[^\n\r)]*to:" "original" } } */
+
+/* { dg-final { scan-tree-dump-times "pragma omp target map\\(always,to:" 7 "original" } } */
+
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b1" "original" } } */
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b2" "original" } } */
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b3" "original" } } */
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b4" "original" } } */
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b5" "original" } } */
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b6" "original" } } */
+/* { dg-final { scan-tree-dump "pragma omp target map\\(always,to:b7\\) map\\(always,to:close\\) map\\(always,to:always\\)" "original" } } */
diff --git a/gcc/testsuite/c-c++-common/gomp/map-7.c b/gcc/testsuite/c-c++-common/gomp/map-7.c
new file mode 100644
index 00000000000..3f1e9729e41
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/gomp/map-7.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+
+void
+foo (void)
+{
+  /* Test to ensure that the close modifier is parsed and ignored in map clauses. */
+
+  #define N 1024
+  int always[N];
+  int close;
+
+  #pragma omp target map(always[:N]) 
+  ;
+
+  #pragma omp target map(close, always[:N]) 
+  ;
+
+  #pragma omp target map(always[:N], close) 
+  ;
+}