[gomp4] Re: OpenACC declare directive updates

Thomas Schwinge thomas@codesourcery.com
Fri Nov 27 11:41:00 GMT 2015


Hi!

On Thu, 19 Nov 2015 10:22:16 -0600, James Norris <jnorris@codesourcery.com> wrote:
> --- a/gcc/fortran/dump-parse-tree.c
> +++ b/gcc/fortran/dump-parse-tree.c

Don't you need to handle OMP_LIST_LINK in
gcc/fortran/dump-parse-tree.c:show_omp_clauses; OMP_LIST_DEVICE_RESIDENT
is being handled there (but maps to the wrong string?).  (See
gomp-4_0-branch.)  When touching that, please sort the "case OMP_LIST_*"s
corresponding to the order the OMP_LIST_* are defined in
gcc/fortran/gfortran.h.

> --- a/gcc/fortran/openmp.c
> +++ b/gcc/fortran/openmp.c

I see OMP_LIST_DEVICE_RESIDENT being handled in
gcc/fortran/openmp.c:resolve_omp_clauses and
gcc/fortran/openmp.c:gfc_resolve_oacc_declare, but not OMP_LIST_LINK --
is that correct?  Likewise, in
gcc/fortran/trans-openmp.c:gfc_trans_omp_clauses.

Also, oacc_declare_device_resident is handled in a lot more places
compared to oacc_declare_link -- is that correct?  In fact, there doesn't
seem to be any "consumer" for the latter, but I see the OpenACC link
clause being used in the test cases you added, so I wonder how that
works.


Merging your trunk r230722 and r230725 with the existing Fortran OpenACC
declare implementation present on gomp-4_0-branch, I effectively applied
the following to gomp-4_0-branch in 231002.  Please verify this.

Regarding my Fortran XFAIL comments in
<http://news.gmane.org/find-root.php?message_id=%3C878u5n7pqk.fsf%40hertz.schwinge.homeip.net%3E>,
with some of my earlier changes "#if 0"ed in
gcc/fortran/trans-decl.c:add_attributes_to_decl,
libgomp.oacc-fortran/declare-3.f90 again PASSes.  But I don't understand
(why something like) this code (isn't needed/done differently in C/C++).
The XFAIL in libgomp.oacc-fortran/declare-1.f90 means to be resolved
(gomp-4_0-branch only; not seen on trunk): "libgomp: cuStreamSynchronize
error: an illegal memory access was encountered".

commit 95e909a492b001df6d6faffdfa6047a5e9919561
Merge: 8373bdf e18d05e
Author: tschwinge <tschwinge@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Nov 27 09:41:03 2015 +0000

    svn merge -r 230720:230725 svn+ssh://gcc.gnu.org/svn/gcc/trunk
    
    
    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gomp-4_0-branch@231002 138bc75d-0d04-0410-961f-82ee72b054a4

 gcc/fortran/ChangeLog                              |  51 +++++
 gcc/fortran/gfortran.h                             |  17 +-
 gcc/fortran/openmp.c                               | 235 +++++++++++++--------
 gcc/fortran/parse.c                                |   2 +-
 gcc/fortran/parse.h                                |   2 +-
 gcc/fortran/resolve.c                              |   1 -
 gcc/fortran/st.c                                   |   2 +-
 gcc/fortran/symbol.c                               |  12 +-
 gcc/fortran/trans-decl.c                           | 198 +++++------------
 gcc/fortran/trans-openmp.c                         |  29 +--
 gcc/fortran/trans-stmt.c                           |   3 +-
 gcc/testsuite/ChangeLog                            |   6 +
 gcc/testsuite/gfortran.dg/goacc/declare-1.f95      |   4 +-
 gcc/testsuite/gfortran.dg/goacc/declare-2.f95      |  43 +++-
 libgomp/ChangeLog                                  |   9 +
 .../testsuite/libgomp.oacc-fortran/declare-1.f90   |  13 ++
 .../testsuite/libgomp.oacc-fortran/declare-2.f90   |   2 +
 .../testsuite/libgomp.oacc-fortran/declare-3.f90   |   4 +-
 .../testsuite/libgomp.oacc-fortran/declare-4.f90   |   2 +
 .../testsuite/libgomp.oacc-fortran/declare-5.f90   |   1 +
 20 files changed, 347 insertions(+), 289 deletions(-)

[diff --git gcc/fortran/ChangeLog gcc/fortran/ChangeLog]
diff --git gcc/fortran/gfortran.h gcc/fortran/gfortran.h
index c8401cf..dd186b5 100644
--- gcc/fortran/gfortran.h
+++ gcc/fortran/gfortran.h
@@ -1250,17 +1250,18 @@ gfc_omp_clauses;
 
 #define gfc_get_omp_clauses() XCNEW (gfc_omp_clauses)
 
-/* Node in the linked list used for storing OpenACC declare constructs.  */
+
+/* Node in the linked list used for storing !$oacc declare constructs.  */
 
 typedef struct gfc_oacc_declare
 {
   struct gfc_oacc_declare *next;
-  locus where;
   bool module_var;
   gfc_omp_clauses *clauses;
-  gfc_omp_clauses *return_clauses;
+  locus loc;
 }
 gfc_oacc_declare;
+
 #define gfc_get_oacc_declare() XCNEW (gfc_oacc_declare)
 
 
@@ -1685,8 +1686,8 @@ typedef struct gfc_namespace
      this namespace.  */
   struct gfc_data *data, *old_data;
 
-  /* !$ACC DECLARE clauses.  */
-  struct gfc_oacc_declare *oacc_declare;
+  /* !$ACC DECLARE.  */
+  gfc_oacc_declare *oacc_declare;
 
   /* !$ACC ROUTINE clauses.  */
   gfc_omp_clauses *oacc_routine_clauses;
@@ -2455,8 +2456,8 @@ typedef struct gfc_code
     struct gfc_code *which_construct;
     int stop_code;
     gfc_entry_list *entry;
-    gfc_omp_clauses *omp_clauses;
     gfc_oacc_declare *oacc_declare;
+    gfc_omp_clauses *omp_clauses;
     const char *omp_name;
     gfc_omp_namelist *omp_namelist;
     bool omp_bool;
@@ -2958,7 +2959,7 @@ gfc_expr *gfc_get_parentheses (gfc_expr *);
 /* openmp.c */
 struct gfc_omp_saved_state { void *ptrs[2]; int ints[1]; };
 void gfc_free_omp_clauses (gfc_omp_clauses *);
-void gfc_free_oacc_declares (struct gfc_oacc_declare *);
+void gfc_free_oacc_declare_clauses (struct gfc_oacc_declare *);
 void gfc_free_omp_declare_simd (gfc_omp_declare_simd *);
 void gfc_free_omp_declare_simd_list (gfc_omp_declare_simd *);
 void gfc_free_omp_udr (gfc_omp_udr *);
@@ -3278,6 +3279,6 @@ bool gfc_is_reallocatable_lhs (gfc_expr *);
 
 /* trans-decl.c */
 
-void finish_oacc_declare (gfc_namespace *, enum sym_flavor);
+void finish_oacc_declare (gfc_namespace *, gfc_symbol *, bool);
 
 #endif /* GCC_GFORTRAN_H  */
diff --git gcc/fortran/openmp.c gcc/fortran/openmp.c
index e8e8071..c6db847 100644
--- gcc/fortran/openmp.c
+++ gcc/fortran/openmp.c
@@ -94,7 +94,7 @@ gfc_free_omp_clauses (gfc_omp_clauses *c)
 /* Free oacc_declare structures.  */
 
 void
-gfc_free_oacc_declares (struct gfc_oacc_declare *oc)
+gfc_free_oacc_declare_clauses (struct gfc_oacc_declare *oc)
 {
   struct gfc_oacc_declare *decl = oc;
 
@@ -413,6 +413,110 @@ match_oacc_clause_gang (gfc_omp_clauses *cp)
   return gfc_match (" %e )", &cp->gang_expr);
 }
 
+static match
+gfc_match_oacc_clause_link (const char *str, gfc_omp_namelist **list)
+{
+  gfc_omp_namelist *head = NULL;
+  gfc_omp_namelist *tail, *p;
+  locus old_loc;
+  char n[GFC_MAX_SYMBOL_LEN+1];
+  gfc_symbol *sym;
+  match m;
+  gfc_symtree *st;
+
+  old_loc = gfc_current_locus;
+
+  m = gfc_match (str);
+  if (m != MATCH_YES)
+    return m;
+
+  m = gfc_match (" (");
+
+  for (;;)
+    {
+      m = gfc_match_symbol (&sym, 0);
+      switch (m)
+	{
+	case MATCH_YES:
+	  if (sym->attr.in_common)
+	    {
+	      gfc_error_now ("Variable at %C is an element of a COMMON block");
+	      goto cleanup;
+	    }
+	  gfc_set_sym_referenced (sym);
+	  p = gfc_get_omp_namelist ();
+	  if (head == NULL)
+	    head = tail = p;
+	  else
+	    {
+	      tail->next = p;
+	      tail = tail->next;
+	    }
+	  tail->sym = sym;
+	  tail->expr = NULL;
+	  tail->where = gfc_current_locus;
+	  goto next_item;
+	case MATCH_NO:
+	  break;
+
+	case MATCH_ERROR:
+	  goto cleanup;
+	}
+
+      m = gfc_match (" / %n /", n);
+      if (m == MATCH_ERROR)
+	goto cleanup;
+      if (m == MATCH_NO || n[0] == '\0')
+	goto syntax;
+
+      st = gfc_find_symtree (gfc_current_ns->common_root, n);
+      if (st == NULL)
+	{
+	  gfc_error ("COMMON block /%s/ not found at %C", n);
+	  goto cleanup;
+	}
+
+      for (sym = st->n.common->head; sym; sym = sym->common_next)
+	{
+	  gfc_set_sym_referenced (sym);
+	  p = gfc_get_omp_namelist ();
+	  if (head == NULL)
+	    head = tail = p;
+	  else
+	    {
+	      tail->next = p;
+	      tail = tail->next;
+	    }
+	  tail->sym = sym;
+	  tail->where = gfc_current_locus;
+	}
+
+    next_item:
+      if (gfc_match_char (')') == MATCH_YES)
+	break;
+      if (gfc_match_char (',') != MATCH_YES)
+	goto syntax;
+    }
+
+  if (gfc_match_omp_eos () != MATCH_YES)
+    {
+      gfc_error ("Unexpected junk after !$ACC DECLARE at %C");
+      goto cleanup;
+    }
+
+  while (*list)
+    list = &(*list)->next;
+  *list = head;
+  return MATCH_YES;
+
+syntax:
+  gfc_error ("Syntax error in !$ACC DECLARE list at %C");
+
+cleanup:
+  gfc_current_locus = old_loc;
+  return MATCH_ERROR;
+}
+
 #define OMP_CLAUSE_PRIVATE		((uint64_t) 1 << 0)
 #define OMP_CLAUSE_FIRSTPRIVATE		((uint64_t) 1 << 1)
 #define OMP_CLAUSE_LASTPRIVATE		((uint64_t) 1 << 2)
@@ -473,10 +577,10 @@ match_oacc_clause_gang (gfc_omp_clauses *cp)
 #define OMP_CLAUSE_DELETE		((uint64_t) 1 << 55)
 #define OMP_CLAUSE_AUTO			((uint64_t) 1 << 56)
 #define OMP_CLAUSE_TILE			((uint64_t) 1 << 57)
-#define OMP_CLAUSE_BIND			((uint64_t) 1 << 58)
-#define OMP_CLAUSE_NOHOST		((uint64_t) 1 << 59)
-#define OMP_CLAUSE_DEVICE_TYPE		((uint64_t) 1 << 60)
-#define OMP_CLAUSE_LINK			((uint64_t) 1 << 61)
+#define OMP_CLAUSE_LINK			((uint64_t) 1 << 58)
+#define OMP_CLAUSE_BIND			((uint64_t) 1 << 59)
+#define OMP_CLAUSE_NOHOST		((uint64_t) 1 << 60)
+#define OMP_CLAUSE_DEVICE_TYPE		((uint64_t) 1 << 61)
 
 /* Helper function for OpenACC and OpenMP clauses involving memory
    mapping.  */
@@ -739,9 +843,8 @@ gfc_match_omp_clauses (gfc_omp_clauses **cp, uint64_t mask,
 	     == MATCH_YES)
 	continue;
       if ((mask & OMP_CLAUSE_LINK)
-	  && gfc_match_omp_variable_list ("link (",
-					  &c->lists[OMP_LIST_LINK],
-					  true)
+	  && gfc_match_oacc_clause_link ("link (",
+					  &c->lists[OMP_LIST_LINK])
 	     == MATCH_YES)
 	continue;
       if ((mask & OMP_CLAUSE_OACC_DEVICE)
@@ -1444,8 +1547,9 @@ gfc_match_oacc_declare (void)
   gfc_omp_clauses *c;
   gfc_omp_namelist *n;
   gfc_namespace *ns = gfc_current_ns;
-  gfc_oacc_declare *new_oc, *oc;
+  gfc_oacc_declare *new_oc;
   bool module_var = false;
+  locus where = gfc_current_locus;
 
   if (gfc_match_omp_clauses (&c, OACC_DECLARE_CLAUSES, 0, false, false, true)
       != MATCH_YES)
@@ -1466,8 +1570,8 @@ gfc_match_oacc_declare (void)
 	  if (n->u.map_op != OMP_MAP_FORCE_ALLOC
 	      && n->u.map_op != OMP_MAP_FORCE_TO)
 	    {
-	      gfc_error ("Invalid clause in module with "
-			 "$!ACC DECLARE at %C");
+	      gfc_error ("Invalid clause in module with $!ACC DECLARE at %L",
+			 &where);
 	      return MATCH_ERROR;
 	    }
 
@@ -1476,29 +1580,23 @@ gfc_match_oacc_declare (void)
 
       if (ns->proc_name->attr.oacc_function)
 	{
-	  gfc_error ("Invalid declare in routine with " "$!ACC DECLARE at %C");
-	  return MATCH_ERROR;
-	}
-
-      if (s->attr.in_common)
-	{
-	  gfc_error ("Unsupported: variable in a common block with "
-		     "$!ACC DECLARE at %C");
+	  gfc_error ("Invalid declare in routine with $!ACC DECLARE at %L",
+		     &where);
 	  return MATCH_ERROR;
 	}
 
       if (s->attr.use_assoc)
 	{
-	  gfc_error ("Unsupported: variable is USE-associated with "
-		     "$!ACC DECLARE at %C");
+	  gfc_error ("Variable is USE-associated with $!ACC DECLARE at %L",
+		     &where);
 	  return MATCH_ERROR;
 	}
 
       if ((s->attr.dimension || s->attr.codimension)
 	  && s->attr.dummy && s->as->type != AS_EXPLICIT)
 	{
-	  gfc_error ("Unsupported: assumed-size dummy array with "
-		     "$!ACC DECLARE at %C");
+	  gfc_error ("Assumed-size dummy array with $!ACC DECLARE at %L",
+		     &where);
 	  return MATCH_ERROR;
 	}
 
@@ -1525,38 +1623,7 @@ gfc_match_oacc_declare (void)
   new_oc->next = ns->oacc_declare;
   new_oc->module_var = module_var;
   new_oc->clauses = c;
-  new_oc->where = gfc_current_locus;
-
-  for (oc = new_oc; oc; oc = oc->next)
-    {
-      c = oc->clauses;
-      for (n = c->lists[OMP_LIST_MAP]; n != NULL; n = n->next)
-	n->sym->mark = 0;
-    }
-
-  for (oc = new_oc; oc; oc = oc->next)
-    {
-      c = oc->clauses;
-      for (n = c->lists[OMP_LIST_MAP]; n != NULL; n = n->next)
-	{
-	  if (n->sym->mark)
-	    {
-	      gfc_error ("Symbol %qs present on multiple clauses at %C",
-			 n->sym->name);
-	      return MATCH_ERROR;
-	    }
-	  else
-	    n->sym->mark = 1;
-	}
-    }
-
-  for (oc = new_oc; oc; oc = oc->next)
-    {
-      c = oc->clauses;
-      for (n = c->lists[OMP_LIST_MAP]; n != NULL; n = n->next)
-	n->sym->mark = 1;
-    }
-
+  new_oc->loc = gfc_current_locus;
   ns->oacc_declare = new_oc;
 
   return MATCH_YES;
@@ -4936,13 +5003,11 @@ resolve_oacc_loop (gfc_code *code)
   resolve_oacc_nested_loops (code, do_code, collapse, "collapsed");
 }
 
-
 void
 gfc_resolve_oacc_declare (gfc_namespace *ns)
 {
   int list;
   gfc_omp_namelist *n;
-  locus loc;
   gfc_oacc_declare *oc;
 
   if (ns->oacc_declare == NULL)
@@ -4950,55 +5015,40 @@ gfc_resolve_oacc_declare (gfc_namespace *ns)
 
   for (oc = ns->oacc_declare; oc; oc = oc->next)
     {
-      loc = oc->where;
-
-      for (list = OMP_LIST_DEVICE_RESIDENT;
-	   list <= OMP_LIST_DEVICE_RESIDENT; list++)
+      for (list = 0; list < OMP_LIST_NUM; list++)
 	for (n = oc->clauses->lists[list]; n; n = n->next)
 	  {
 	    n->sym->mark = 0;
 	    if (n->sym->attr.flavor == FL_PARAMETER)
-	      gfc_error ("PARAMETER object %qs is not allowed at %L",
-			 n->sym->name, &loc);
-	  }
+	      {
+		gfc_error ("PARAMETER object %qs is not allowed at %L",
+			   n->sym->name, &oc->loc);
+		continue;
+	      }
 
-      for (list = OMP_LIST_DEVICE_RESIDENT;
-	    list <= OMP_LIST_DEVICE_RESIDENT; list++)
-	for (n = oc->clauses->lists[list]; n; n = n->next)
-	  {
-	    if (n->sym->mark)
-	      gfc_error ("Symbol %qs present on multiple clauses at %L",
-			 n->sym->name, &loc);
-	    else
-	      n->sym->mark = 1;
+	    if (n->expr && n->expr->ref->type == REF_ARRAY)
+	      {
+		gfc_error ("Array sections: %qs not allowed in"
+			   " $!ACC DECLARE at %L", n->sym->name, &oc->loc);
+		continue;
+	      }
 	  }
 
       for (n = oc->clauses->lists[OMP_LIST_DEVICE_RESIDENT]; n; n = n->next)
-	check_array_not_assumed (n->sym, loc, "DEVICE_RESIDENT");
-
-      for (n = oc->clauses->lists[OMP_LIST_MAP]; n; n = n->next)
-	{
-	  if (n->expr && n->expr->ref->type == REF_ARRAY)
-	      gfc_error ("Subarray: %qs not allowed in $!ACC DECLARE at %L",
-			 n->sym->name, &loc);
-	}
-    }
-
-  for (oc = ns->oacc_declare; oc; oc = oc->next)
-    {
-      for (list = OMP_LIST_LINK; list <= OMP_LIST_LINK; list++)
-	for (n = oc->clauses->lists[list]; n; n = n->next)
-	  n->sym->mark = 0;
+	check_array_not_assumed (n->sym, oc->loc, "DEVICE_RESIDENT");
     }
 
   for (oc = ns->oacc_declare; oc; oc = oc->next)
     {
-      for (list = OMP_LIST_LINK; list <= OMP_LIST_LINK; list++)
+      for (list = 0; list < OMP_LIST_NUM; list++)
 	for (n = oc->clauses->lists[list]; n; n = n->next)
 	  {
 	    if (n->sym->mark)
-	      gfc_error ("Symbol %qs present on multiple clauses at %L",
-			 n->sym->name, &loc);
+	      {
+		gfc_error ("Symbol %qs present on multiple clauses at %L",
+			   n->sym->name, &oc->loc);
+		continue;
+	      }
 	    else
 	      n->sym->mark = 1;
 	  }
@@ -5006,13 +5056,12 @@ gfc_resolve_oacc_declare (gfc_namespace *ns)
 
   for (oc = ns->oacc_declare; oc; oc = oc->next)
     {
-      for (list = OMP_LIST_LINK; list <= OMP_LIST_LINK; list++)
+      for (list = 0; list < OMP_LIST_NUM; list++)
 	for (n = oc->clauses->lists[list]; n; n = n->next)
 	  n->sym->mark = 0;
     }
 }
 
-
 void
 gfc_resolve_oacc_directive (gfc_code *code, gfc_namespace *ns ATTRIBUTE_UNUSED)
 {
diff --git gcc/fortran/parse.c gcc/fortran/parse.c
index 6c4d195..b2d15a8 100644
--- gcc/fortran/parse.c
+++ gcc/fortran/parse.c
@@ -1406,7 +1406,7 @@ push_state (gfc_state_data *p, gfc_compile_state new_state, gfc_symbol *sym)
   p->head = p->tail = NULL;
   p->do_variable = NULL;
   if (p->state != COMP_DO && p->state != COMP_DO_CONCURRENT)
-    p->ext.oacc_declare = NULL;
+    p->ext.oacc_declare_clauses = NULL;
 
   /* If this the state of a construct like BLOCK, DO or IF, the corresponding
      construct statement was accepted right before pushing the state.  Thus,
diff --git gcc/fortran/parse.h gcc/fortran/parse.h
index f343550..94b2ada 100644
--- gcc/fortran/parse.h
+++ gcc/fortran/parse.h
@@ -48,7 +48,7 @@ typedef struct gfc_state_data
   union
   {
     gfc_st_label *end_do_label;
-    struct gfc_oacc_declare *oacc_declare;
+    gfc_oacc_declare *oacc_declare_clauses;
   }
   ext;
 }
diff --git gcc/fortran/resolve.c gcc/fortran/resolve.c
index 1d38d23..febf0fa 100644
--- gcc/fortran/resolve.c
+++ gcc/fortran/resolve.c
@@ -9374,7 +9374,6 @@ gfc_resolve_blocks (gfc_code *b, gfc_namespace *ns)
 	case EXEC_OACC_EXIT_DATA:
 	case EXEC_OACC_ATOMIC:
 	case EXEC_OACC_ROUTINE:
-	case EXEC_OACC_DECLARE:
 	case EXEC_OMP_ATOMIC:
 	case EXEC_OMP_CRITICAL:
 	case EXEC_OMP_DISTRIBUTE:
diff --git gcc/fortran/st.c gcc/fortran/st.c
index 78099b8..566150b 100644
--- gcc/fortran/st.c
+++ gcc/fortran/st.c
@@ -187,7 +187,7 @@ gfc_free_statement (gfc_code *p)
 
     case EXEC_OACC_DECLARE:
       if (p->ext.oacc_declare)
-	gfc_free_oacc_declares (p->ext.oacc_declare);
+	gfc_free_oacc_declare_clauses (p->ext.oacc_declare);
       break;
 
     case EXEC_OACC_PARALLEL_LOOP:
diff --git gcc/fortran/symbol.c gcc/fortran/symbol.c
index 43fd25d..ff9aff9 100644
--- gcc/fortran/symbol.c
+++ gcc/fortran/symbol.c
@@ -1269,7 +1269,8 @@ gfc_add_omp_declare_target (symbol_attribute *attr, const char *name,
 
 
 bool
-gfc_add_oacc_declare_create (symbol_attribute *attr, const char *name, locus *where)
+gfc_add_oacc_declare_create (symbol_attribute *attr, const char *name,
+			     locus *where)
 {
   if (check_used (attr, name, where))
     return false;
@@ -1283,7 +1284,8 @@ gfc_add_oacc_declare_create (symbol_attribute *attr, const char *name, locus *wh
 
 
 bool
-gfc_add_oacc_declare_copyin (symbol_attribute *attr, const char *name, locus *where)
+gfc_add_oacc_declare_copyin (symbol_attribute *attr, const char *name,
+			     locus *where)
 {
   if (check_used (attr, name, where))
     return false;
@@ -1297,7 +1299,8 @@ gfc_add_oacc_declare_copyin (symbol_attribute *attr, const char *name, locus *wh
 
 
 bool
-gfc_add_oacc_declare_deviceptr (symbol_attribute *attr, const char *name, locus *where)
+gfc_add_oacc_declare_deviceptr (symbol_attribute *attr, const char *name,
+				locus *where)
 {
   if (check_used (attr, name, where))
     return false;
@@ -1311,7 +1314,8 @@ gfc_add_oacc_declare_deviceptr (symbol_attribute *attr, const char *name, locus
 
 
 bool
-gfc_add_oacc_declare_device_resident (symbol_attribute *attr, const char *name, locus *where)
+gfc_add_oacc_declare_device_resident (symbol_attribute *attr, const char *name,
+				      locus *where)
 {
   if (check_used (attr, name, where))
     return false;
diff --git gcc/fortran/trans-decl.c gcc/fortran/trans-decl.c
index 56bc797..eaf46cb 100644
--- gcc/fortran/trans-decl.c
+++ gcc/fortran/trans-decl.c
@@ -1302,15 +1302,20 @@ add_attributes_to_decl (symbol_attribute sym_attr, tree list)
       }
 
   if (sym_attr.omp_declare_target
+#if 0 /* TODO */
       || sym_attr.oacc_declare_create
       || sym_attr.oacc_declare_copyin
       || sym_attr.oacc_declare_deviceptr
-      || sym_attr.oacc_declare_device_resident)
+      || sym_attr.oacc_declare_device_resident
+#endif
+      )
     list = tree_cons (get_identifier ("omp declare target"),
 		      NULL_TREE, list);
+#if 0 /* TODO */
   if (sym_attr.oacc_declare_link)
     list = tree_cons (get_identifier ("omp declare target link"),
 		      NULL_TREE, list);
+#endif
 
   if (sym_attr.oacc_function)
     {
@@ -5782,61 +5787,6 @@ is_ieee_module_used (gfc_namespace *ns)
 }
 
 
-static struct oacc_return
-{
-  gfc_code *code;
-  struct oacc_return *next;
-} *oacc_returns;
-
-
-static void
-find_oacc_return (gfc_code *code)
-{
-  if (code->next)
-    {
-      if (code->next->op == EXEC_RETURN)
-	{
-	  struct oacc_return *r;
-
-	  r = XCNEW (struct oacc_return);
-	  r->code = code;
-	  r->next = NULL;
-
-	  if (oacc_returns)
-	    r->next = oacc_returns;
-
-	  oacc_returns = r;
-	}
-      else
-	{
-	  find_oacc_return (code->next);
-	}
-    }
-
-  if (code->block)
-    find_oacc_return (code->block);
-
-  return;
-}
-
-
-static gfc_code *
-find_end (gfc_code *code)
-{
-  gcc_assert (code);
-
-  if (code->next)
-    {
-      if (code->next->op == EXEC_END_PROCEDURE)
-	return code;
-      else
-	return find_end (code->next);
-    }
-
-  return NULL;
-}
-
-
 static gfc_omp_clauses *module_oacc_clauses;
 
 
@@ -5891,16 +5841,17 @@ find_module_oacc_declare_clauses (gfc_symbol *sym)
 
 
 void
-finish_oacc_declare (gfc_namespace *ns, enum sym_flavor flavor)
+finish_oacc_declare (gfc_namespace *ns, gfc_symbol *sym, bool block)
 {
   gfc_code *code;
   gfc_oacc_declare *oc;
-  gfc_omp_namelist *n;
   locus where = gfc_current_locus;
+  gfc_omp_clauses *omp_clauses = NULL;
+  gfc_omp_namelist *n, *p;
 
   gfc_traverse_ns (ns, find_module_oacc_declare_clauses);
 
-  if (module_oacc_clauses && flavor == FL_PROGRAM)
+  if (module_oacc_clauses && sym->attr.flavor == FL_PROGRAM)
     {
       gfc_oacc_declare *new_oc;
 
@@ -5917,107 +5868,63 @@ finish_oacc_declare (gfc_namespace *ns, enum sym_flavor flavor)
 
   for (oc = ns->oacc_declare; oc; oc = oc->next)
     {
-      gfc_omp_clauses *omp_clauses, *ret_clauses;
-
       if (oc->module_var)
 	continue;
 
-      if (oc->clauses)
-	{
-	   code = XCNEW (gfc_code);
-	   code->op = EXEC_OACC_DECLARE;
-	   code->loc = where;
-
-	   ret_clauses = NULL;
-	   omp_clauses = oc->clauses;
-
-	   for (n = omp_clauses->lists[OMP_LIST_MAP]; n; n = n->next)
-	     {
-		bool ret = false;
-		gfc_omp_map_op new_op;
-
-		switch (n->u.map_op)
-		  {
-		    case OMP_MAP_ALLOC:
-		    case OMP_MAP_FORCE_ALLOC:
-		      new_op = OMP_MAP_FORCE_DEALLOC;
-		      ret = true;
-		      break;
+      if (block)
+	gfc_error ("Sorry, $!ACC DECLARE at %L is not allowed "
+		   "in BLOCK construct", &oc->loc);
 
-		    case OMP_MAP_DEVICE_RESIDENT:
-		      n->u.map_op = OMP_MAP_FORCE_ALLOC;
-		      new_op = OMP_MAP_FORCE_DEALLOC;
-		      ret = true;
-		      break;
 
-		    case OMP_MAP_FORCE_FROM:
-		      n->u.map_op = OMP_MAP_FORCE_ALLOC;
-		      new_op = OMP_MAP_FORCE_FROM;
-		      ret = true;
-		      break;
-
-		    case OMP_MAP_FORCE_TO:
-		      new_op = OMP_MAP_FORCE_DEALLOC;
-		      ret = true;
-		      break;
-
-		    case OMP_MAP_FORCE_TOFROM:
-		      n->u.map_op = OMP_MAP_FORCE_TO;
-		      new_op = OMP_MAP_FORCE_FROM;
-		      ret = true;
-		      break;
+      if (oc->clauses && oc->clauses->lists[OMP_LIST_MAP])
+	{
+	  if (omp_clauses == NULL)
+	    {
+	      omp_clauses = oc->clauses;
+	      continue;
+	    }
 
-		    case OMP_MAP_FROM:
-		      n->u.map_op = OMP_MAP_FORCE_ALLOC;
-		      new_op = OMP_MAP_FROM;
-		      ret = true;
-		      break;
+	  for (n = oc->clauses->lists[OMP_LIST_MAP]; n; p = n, n = n->next)
+	    ;
 
-		    case OMP_MAP_FORCE_DEVICEPTR:
-		    case OMP_MAP_FORCE_PRESENT:
-		    case OMP_MAP_LINK:
-		    case OMP_MAP_TO:
-		      break;
+	  gcc_assert (p->next == NULL);
 
-		    case OMP_MAP_TOFROM:
-		      n->u.map_op = OMP_MAP_TO;
-		      new_op = OMP_MAP_FROM;
-		      ret = true;
-		      break;
+	  p->next = omp_clauses->lists[OMP_LIST_MAP];
+	  omp_clauses = oc->clauses;
+	}
+    }
 
-		    default:
-		      gcc_unreachable ();
-		      break;
-		  }
+  if (!omp_clauses)
+    return;
 
-		if (ret)
-		  {
-		    gfc_omp_namelist *new_n;
+  for (n = omp_clauses->lists[OMP_LIST_MAP]; n; n = n->next)
+    {
+      switch (n->u.map_op)
+	{
+	  case OMP_MAP_DEVICE_RESIDENT:
+	    n->u.map_op = OMP_MAP_FORCE_ALLOC;
+	    break;
 
-		    new_n = gfc_get_omp_namelist ();
-		    new_n->sym = n->sym;
-		    new_n->u.map_op = new_op;
+	  default:
+	    break;
+	}
+    }
 
-		    if (!ret_clauses)
-		      ret_clauses = gfc_get_omp_clauses ();
+  code = XCNEW (gfc_code);
+  code->op = EXEC_OACC_DECLARE;
+  code->loc = where;
 
-		    if (ret_clauses->lists[OMP_LIST_MAP])
-		      new_n->next = ret_clauses->lists[OMP_LIST_MAP];
+  code->ext.oacc_declare = gfc_get_oacc_declare ();
+  code->ext.oacc_declare->clauses = omp_clauses;
 
-		    ret_clauses->lists[OMP_LIST_MAP] = new_n;
-		    ret = false;
-		  }
-	     }
+  code->block = XCNEW (gfc_code);
+  code->block->op = EXEC_OACC_DECLARE;
+  code->block->loc = where;
 
-	   code->ext.oacc_declare = gfc_get_oacc_declare ();
-	   code->ext.oacc_declare->clauses = omp_clauses;
-	   code->ext.oacc_declare->return_clauses = ret_clauses;
+  if (ns->code)
+    code->block->next = ns->code;
 
-	   if (ns->code)
-	     code->next = ns->code;
-	   ns->code = code;
-	}
-    }
+  ns->code = code;
 
   return;
 }
@@ -6159,8 +6066,7 @@ gfc_generate_function_code (gfc_namespace * ns)
   if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c)
     add_argument_checking (&body, sym);
 
-  /* Generate !$ACC DECLARE directive. */
-  finish_oacc_declare (ns, sym->attr.flavor);
+  finish_oacc_declare (ns, sym, false);
 
   tmp = gfc_trans_code (ns->code);
   gfc_add_expr_to_block (&body, tmp);
diff --git gcc/fortran/trans-openmp.c gcc/fortran/trans-openmp.c
index 87ecc5a..e98a29c 100644
--- gcc/fortran/trans-openmp.c
+++ gcc/fortran/trans-openmp.c
@@ -1776,8 +1776,8 @@ gfc_trans_omp_clauses_1 (stmtblock_t *block, gfc_omp_clauses *clauses,
 	  clause_code = OMP_CLAUSE_USE_DEVICE;
 	  goto add_clause;
 	case OMP_LIST_DEVICE_RESIDENT:
-	case OMP_LIST_LINK:
-	  continue;
+	  clause_code = OMP_CLAUSE_DEVICE_RESIDENT;
+	  goto add_clause;
 
 	add_clause:
 	  omp_clauses
@@ -1925,9 +1925,6 @@ gfc_trans_omp_clauses_1 (stmtblock_t *block, gfc_omp_clauses *clauses,
 	      if (!n->sym->attr.referenced)
 		continue;
 
-	      if (n->sym->attr.use_assoc && n->sym->attr.oacc_declare_link)
-		continue;
-
 	      tree node = build_omp_clause (input_location, OMP_CLAUSE_MAP);
 	      tree node2 = NULL_TREE;
 	      tree node3 = NULL_TREE;
@@ -2141,9 +2138,6 @@ gfc_trans_omp_clauses_1 (stmtblock_t *block, gfc_omp_clauses *clauses,
 		case OMP_MAP_FORCE_DEVICEPTR:
 		  OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_DEVICEPTR);
 		  break;
-		case OMP_MAP_DEVICE_RESIDENT:
-		  OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_DEVICE_RESIDENT);
-		  break;
 		default:
 		  gcc_unreachable ();
 		}
@@ -4672,23 +4666,18 @@ tree
 gfc_trans_oacc_declare (gfc_code *code)
 {
   stmtblock_t block;
-  tree stmt, c1;
+  tree stmt, oacc_clauses;
   enum tree_code construct_code;
 
-  gfc_start_block (&block);
-
-  construct_code = OACC_DECLARE;
+  construct_code = OACC_DATA;
 
   gfc_start_block (&block);
-  c1 = gfc_trans_omp_clauses (&block, code->ext.oacc_declare->clauses,
-			      code->loc);
-
-#if 0 /* TODO */
-  c2 = gfc_trans_omp_clauses (&block, code->ext.oacc_declare->return_clauses,
-			      code->loc);
-#endif
 
-  stmt = build1_loc (input_location, construct_code, void_type_node, c1);
+  oacc_clauses = gfc_trans_omp_clauses (&block, code->ext.oacc_declare->clauses,
+					code->loc);
+  stmt = gfc_trans_omp_code (code->block->next, true);
+  stmt = build2_loc (input_location, construct_code, void_type_node, stmt,
+		     oacc_clauses);
   gfc_add_expr_to_block (&block, stmt);
 
   return gfc_finish_block (&block);
diff --git gcc/fortran/trans-stmt.c gcc/fortran/trans-stmt.c
index 4a9c98a..06591a3 100644
--- gcc/fortran/trans-stmt.c
+++ gcc/fortran/trans-stmt.c
@@ -1575,8 +1575,7 @@ gfc_trans_block_construct (gfc_code* code)
   exit_label = gfc_build_label_decl (NULL_TREE);
   code->exit_label = exit_label;
 
-  /* Generate !$ACC DECLARE directive. */
-  finish_oacc_declare (ns, FL_UNKNOWN);
+  finish_oacc_declare (ns, sym, true);
 
   gfc_add_expr_to_block (&body, gfc_trans_code (ns->code));
   gfc_add_expr_to_block (&body, build1_v (LABEL_EXPR, exit_label));
[diff --git gcc/testsuite/ChangeLog gcc/testsuite/ChangeLog]
diff --git gcc/testsuite/gfortran.dg/goacc/declare-1.f95 gcc/testsuite/gfortran.dg/goacc/declare-1.f95
index 3129f04..1ff8e6a 100644
--- gcc/testsuite/gfortran.dg/goacc/declare-1.f95
+++ gcc/testsuite/gfortran.dg/goacc/declare-1.f95
@@ -1,5 +1,4 @@
 ! { dg-do compile } 
-! { dg-additional-options "-fdump-tree-original" } 
 
 program test
   implicit none
@@ -11,8 +10,7 @@ contains
     integer, value :: n
     BLOCK
        integer i
-       !$acc declare copy(i)
+       !$acc declare copy(i) ! { dg-error "is not allowed" }
     END BLOCK
   end function foo
 end program test
-! { dg-final { scan-tree-dump-times "pragma acc declare map\\(force_to:i\\)" 2 "original" } }
diff --git gcc/testsuite/gfortran.dg/goacc/declare-2.f95 gcc/testsuite/gfortran.dg/goacc/declare-2.f95
index afdbe2e..aa1704f 100644
--- gcc/testsuite/gfortran.dg/goacc/declare-2.f95
+++ gcc/testsuite/gfortran.dg/goacc/declare-2.f95
@@ -21,24 +21,51 @@ end subroutine
 
 end module
 
+module bmod
+
+  implicit none
+  integer :: a, b, c, d, e, f, g, h, i
+  common /data1/ a, b, c
+  common /data2/ d, e, f
+  common /data3/ g, h, i
+  !$acc declare link (a) ! { dg-error "element of a COMMON" }
+  !$acc declare link (/data1/)
+  !$acc declare link (a, b, c) ! { dg-error "element of a COMMON" }
+  !$acc declare link (/foo/) ! { dg-error "not found" }
+  !$acc declare device_resident (/data2/)
+  !$acc declare device_resident (/data3/) ! { dg-error "present on multiple clauses" }
+  !$acc declare device_resident (g, h, i)
+
+end module
+
 subroutine bsubr (foo)
   implicit none
 
   integer, dimension (:) :: foo
 
-  !$acc declare copy (foo) ! { dg-error "assumed-size dummy array" }
-  !$acc declare copy (foo(1:2)) ! { dg-error "assumed-size dummy array" }
+  !$acc declare copy (foo) ! { dg-error "Assumed-size dummy array" }
+  !$acc declare copy (foo(1:2)) ! { dg-error "Assumed-size dummy array" }
 
-end subroutine
+end subroutine bsubr
+
+subroutine multiline
+  integer :: b(8)
+
+  !$acc declare copyin (b) ! { dg-error "present on multiple clauses" }
+  !$acc declare copyin (b)
+
+end subroutine multiline
+
+subroutine subarray
+  integer :: c(8)
+
+  !$acc declare copy (c(1:2)) ! { dg-error "Array sections: 'c' not allowed" }
+
+end subroutine subarray
 
 program test
   integer :: a(8)
-  integer :: b(8)
-  integer :: c(8)
 
   !$acc declare create (a) copyin (a) ! { dg-error "present on multiple clauses" }
-  !$acc declare copyin (b)
-  !$acc declare copyin (b) ! { dg-error "present on multiple clauses" }
-  !$acc declare copy (c(1:2)) ! { dg-error "Subarray: 'c' not allowed" }
 
 end program
[diff --git libgomp/ChangeLog libgomp/ChangeLog]
diff --git libgomp/testsuite/libgomp.oacc-fortran/declare-1.f90 libgomp/testsuite/libgomp.oacc-fortran/declare-1.f90
index dffbedd..430cd24 100644
--- libgomp/testsuite/libgomp.oacc-fortran/declare-1.f90
+++ libgomp/testsuite/libgomp.oacc-fortran/declare-1.f90
@@ -1,12 +1,15 @@
 ! { dg-do run  { target openacc_nvidia_accel_selected } }
+! libgomp: cuStreamSynchronize error: an illegal memory access was encountered
 ! { dg-xfail-run-if "TODO" { *-*-* } }
 
 module vars
+  implicit none
   integer z
   !$acc declare create (z)
 end module vars
 
 subroutine subr6 (a, d)
+  implicit none
   integer, parameter :: N = 8
   integer :: i
   integer :: a(N)
@@ -24,6 +27,7 @@ subroutine subr6 (a, d)
 end subroutine
 
 subroutine subr5 (a, b, c, d)
+  implicit none
   integer, parameter :: N = 8
   integer :: i
   integer :: a(N)
@@ -48,6 +52,7 @@ subroutine subr5 (a, b, c, d)
 end subroutine
 
 subroutine subr4 (a, b)
+  implicit none
   integer, parameter :: N = 8
   integer :: i
   integer :: a(N)
@@ -66,6 +71,7 @@ subroutine subr4 (a, b)
 end subroutine
 
 subroutine subr3 (a, c)
+  implicit none
   integer, parameter :: N = 8
   integer :: i
   integer :: a(N)
@@ -85,6 +91,7 @@ subroutine subr3 (a, c)
 end subroutine
 
 subroutine subr2 (a, b, c)
+  implicit none
   integer, parameter :: N = 8
   integer :: i
   integer :: a(N)
@@ -106,6 +113,7 @@ subroutine subr2 (a, b, c)
 end subroutine
 
 subroutine subr1 (a)
+  implicit none
   integer, parameter :: N = 8
   integer :: i
   integer :: a(N)
@@ -123,6 +131,7 @@ end subroutine
 
 subroutine test (a, e)
   use openacc
+  implicit none
   logical :: e
   integer, parameter :: N = 8
   integer :: a(N)
@@ -132,12 +141,14 @@ subroutine test (a, e)
 end subroutine
 
 subroutine subr0 (a, b, c, d)
+  implicit none
   integer, parameter :: N = 8
   integer :: a(N)
   !$acc declare copy (a)
   integer :: b(N)
   integer :: c(N)
   integer :: d(N)
+  integer :: i
 
   call test (a, .true.)
   call test (b, .false.)
@@ -206,11 +217,13 @@ end subroutine
 program main
   use vars
   use openacc
+  implicit none
   integer, parameter :: N = 8
   integer :: a(N)
   integer :: b(N)
   integer :: c(N)
   integer :: d(N)
+  integer :: i
 
   a(:) = 2
   b(:) = 3
diff --git libgomp/testsuite/libgomp.oacc-fortran/declare-2.f90 libgomp/testsuite/libgomp.oacc-fortran/declare-2.f90
index 9b75aa1..2aa7907 100644
--- libgomp/testsuite/libgomp.oacc-fortran/declare-2.f90
+++ libgomp/testsuite/libgomp.oacc-fortran/declare-2.f90
@@ -1,6 +1,7 @@
 ! { dg-do run  { target openacc_nvidia_accel_selected } }
 
 module globalvars
+  implicit none
   integer a
   !$acc declare create (a)
 end module globalvars
@@ -8,6 +9,7 @@ end module globalvars
 program test
   use globalvars
   use openacc
+  implicit none
 
   if (acc_is_present (a) .neqv. .true.) call abort
 
diff --git libgomp/testsuite/libgomp.oacc-fortran/declare-3.f90 libgomp/testsuite/libgomp.oacc-fortran/declare-3.f90
index 1d19bfd..3a6b420 100644
--- libgomp/testsuite/libgomp.oacc-fortran/declare-3.f90
+++ libgomp/testsuite/libgomp.oacc-fortran/declare-3.f90
@@ -1,13 +1,15 @@
 ! { dg-do run  { target openacc_nvidia_accel_selected } }
-! { dg-xfail-if "TODO" { *-*-* } }
 
 module globalvars
+  implicit none
   real b
   !$acc declare link (b)
 end module globalvars
 
 program test
   use openacc
+  use globalvars
+  implicit none
 
   real a
   real c
diff --git libgomp/testsuite/libgomp.oacc-fortran/declare-4.f90 libgomp/testsuite/libgomp.oacc-fortran/declare-4.f90
index 997c8ac..226264e 100644
--- libgomp/testsuite/libgomp.oacc-fortran/declare-4.f90
+++ libgomp/testsuite/libgomp.oacc-fortran/declare-4.f90
@@ -1,6 +1,7 @@
 ! { dg-do run  { target openacc_nvidia_accel_selected } }
 
 module vars
+  implicit none
   real b
  !$acc declare create (b)
 end module vars
@@ -8,6 +9,7 @@ end module vars
 program test
   use vars
   use openacc
+  implicit none
   real a
 
   if (acc_is_present (b) .neqv. .true.) call abort
diff --git libgomp/testsuite/libgomp.oacc-fortran/declare-5.f90 libgomp/testsuite/libgomp.oacc-fortran/declare-5.f90
index d7c9bac..bcd9c9c 100644
--- libgomp/testsuite/libgomp.oacc-fortran/declare-5.f90
+++ libgomp/testsuite/libgomp.oacc-fortran/declare-5.f90
@@ -9,6 +9,7 @@ end module vars
 program test
   use vars
   use openacc
+  implicit none
   real a
 
   if (acc_is_present (b) .neqv. .true.) call abort


Grüße
 Thomas
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