2020-08-19  Sandra Loosemore  <san...@codesourcery.com>

        gcc/
        * tree.h (OACC_LOOP_COMBINED): New.

        gcc/c/
        * c-parser.c (c_parser_oacc_loop): Set OACC_LOOP_COMBINED.

        gcc/cp/
        * parser.c (cp_parser_oacc_loop): Set OACC_LOOP_COMBINED.

        gcc/fortran/
        * trans-openmp.c (gfc_trans_omp_do): Add combined parameter,
        use it to set OACC_LOOP_COMBINED.  Update all call sites.
---
 gcc/ChangeLog.omp          |  6 ++++++
 gcc/c/ChangeLog.omp        |  6 ++++++
 gcc/c/c-parser.c           |  3 +++
 gcc/cp/ChangeLog.omp       |  6 ++++++
 gcc/cp/parser.c            |  3 +++
 gcc/fortran/ChangeLog.omp  |  7 +++++++
 gcc/fortran/trans-openmp.c | 30 +++++++++++++++++++-----------
 gcc/tree.h                 |  5 +++++
 8 files changed, 55 insertions(+), 11 deletions(-)

diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp
index 063eda3..6bed0b9 100644
--- a/gcc/ChangeLog.omp
+++ b/gcc/ChangeLog.omp
@@ -1,3 +1,9 @@
+2020-08-19  Sandra Loosemore  <san...@codesourcery.com>
+
+       Add a "combined" flag for "acc kernels loop" etc directives.
+
+       * tree.h (OACC_LOOP_COMBINED): New.
+
 2020-08-18  Kwok Cheung Yeung  <k...@codesourcery.com>
 
        Backport from mainline
diff --git a/gcc/c/ChangeLog.omp b/gcc/c/ChangeLog.omp
index 7eff6ab..2803482 100644
--- a/gcc/c/ChangeLog.omp
+++ b/gcc/c/ChangeLog.omp
@@ -1,3 +1,9 @@
+2020-08-19  Sandra Loosemore  <san...@codesourcery.com>
+
+       Add a "combined" flag for "acc kernels loop" etc directives.
+
+       * c-parser.c (c_parser_oacc_loop): Set OACC_LOOP_COMBINED.
+
 2020-08-18  Kwok Cheung Yeung  <k...@codesourcery.com>
 
        Backport from mainline
diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
index b7ed742..a895bdb 100644
--- a/gcc/c/c-parser.c
+++ b/gcc/c/c-parser.c
@@ -16798,6 +16798,7 @@ c_parser_oacc_loop (location_t loc, c_parser *parser, 
char *p_name,
                    omp_clause_mask mask, tree *cclauses, bool *if_p)
 {
   bool is_parallel = ((mask >> PRAGMA_OACC_CLAUSE_REDUCTION) & 1) == 1;
+  bool is_combined = (cclauses != NULL);
 
   strcat (p_name, " loop");
   mask |= OACC_LOOP_CLAUSE_MASK;
@@ -16816,6 +16817,8 @@ c_parser_oacc_loop (location_t loc, c_parser *parser, 
char *p_name,
   tree block = c_begin_compound_stmt (true);
   tree stmt = c_parser_omp_for_loop (loc, parser, OACC_LOOP, clauses, NULL,
                                     if_p);
+  if (stmt && stmt != error_mark_node)
+    OACC_LOOP_COMBINED (stmt) = is_combined;
   block = c_end_compound_stmt (loc, block, true);
   add_stmt (block);
 
diff --git a/gcc/cp/ChangeLog.omp b/gcc/cp/ChangeLog.omp
index 023321a..3c97668 100644
--- a/gcc/cp/ChangeLog.omp
+++ b/gcc/cp/ChangeLog.omp
@@ -1,3 +1,9 @@
+2020-08-19  Sandra Loosemore  <san...@codesourcery.com>
+
+       Add a "combined" flag for "acc kernels loop" etc directives.
+
+       * parser.c (cp_parser_oacc_loop): Set OACC_LOOP_COMBINED.
+
 2020-08-18  Kwok Cheung Yeung  <k...@codesourcery.com>
 
        Backport from mainline
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 437253e..b657e4f 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -41185,6 +41185,7 @@ cp_parser_oacc_loop (cp_parser *parser, cp_token 
*pragma_tok, char *p_name,
                     omp_clause_mask mask, tree *cclauses, bool *if_p)
 {
   bool is_parallel = ((mask >> PRAGMA_OACC_CLAUSE_REDUCTION) & 1) == 1;
+  bool is_combined = (cclauses != NULL);
 
   strcat (p_name, " loop");
   mask |= OACC_LOOP_CLAUSE_MASK;
@@ -41203,6 +41204,8 @@ cp_parser_oacc_loop (cp_parser *parser, cp_token 
*pragma_tok, char *p_name,
   tree block = begin_omp_structured_block ();
   int save = cp_parser_begin_omp_structured_block (parser);
   tree stmt = cp_parser_omp_for_loop (parser, OACC_LOOP, clauses, NULL, if_p);
+  if (stmt && stmt != error_mark_node)
+    OACC_LOOP_COMBINED (stmt) = is_combined;
   cp_parser_end_omp_structured_block (parser, save);
   add_stmt (finish_omp_structured_block (block));
 
diff --git a/gcc/fortran/ChangeLog.omp b/gcc/fortran/ChangeLog.omp
index e64bf82..1d1ee9e 100644
--- a/gcc/fortran/ChangeLog.omp
+++ b/gcc/fortran/ChangeLog.omp
@@ -1,3 +1,10 @@
+2020-08-19  Sandra Loosemore  <san...@codesourcery.com>
+
+       Add a "combined" flag for "acc kernels loop" etc directives.
+
+       * trans-openmp.c (gfc_trans_omp_do): Add combined parameter,
+       use it to set OACC_LOOP_COMBINED.  Update all call sites.
+
 2020-08-18  Kwok Cheung Yeung  <k...@codesourcery.com>
 
        Backport from mainline
diff --git a/gcc/fortran/trans-openmp.c b/gcc/fortran/trans-openmp.c
index f2e6868..1c8ca81 100644
--- a/gcc/fortran/trans-openmp.c
+++ b/gcc/fortran/trans-openmp.c
@@ -4273,7 +4273,8 @@ typedef struct dovar_init_d {
 
 static tree
 gfc_trans_omp_do (gfc_code *code, gfc_exec_op op, stmtblock_t *pblock,
-                 gfc_omp_clauses *do_clauses, tree par_clauses)
+                 gfc_omp_clauses *do_clauses, tree par_clauses,
+                 bool combined)
 {
   gfc_se se;
   tree dovar, stmt, from, to, step, type, init, cond, incr, orig_decls;
@@ -4601,7 +4602,10 @@ gfc_trans_omp_do (gfc_code *code, gfc_exec_op op, 
stmtblock_t *pblock,
     case EXEC_OMP_DO: stmt = make_node (OMP_FOR); break;
     case EXEC_OMP_DISTRIBUTE: stmt = make_node (OMP_DISTRIBUTE); break;
     case EXEC_OMP_TASKLOOP: stmt = make_node (OMP_TASKLOOP); break;
-    case EXEC_OACC_LOOP: stmt = make_node (OACC_LOOP); break;
+    case EXEC_OACC_LOOP:
+      stmt = make_node (OACC_LOOP);
+      OACC_LOOP_COMBINED (stmt) = combined;
+      break;
     default: gcc_unreachable ();
     }
 
@@ -4695,7 +4699,8 @@ gfc_trans_oacc_combined_directive (gfc_code *code)
     pblock = &block;
   else
     pushlevel ();
-  stmt = gfc_trans_omp_do (code, EXEC_OACC_LOOP, pblock, &loop_clauses, NULL);
+  stmt = gfc_trans_omp_do (code, EXEC_OACC_LOOP, pblock, &loop_clauses, NULL,
+                          true);
   protected_set_expr_location (stmt, loc);
   if (TREE_CODE (stmt) != BIND_EXPR)
     stmt = build3_v (BIND_EXPR, NULL, stmt, poplevel (1, 0));
@@ -5128,7 +5133,7 @@ gfc_trans_omp_do_simd (gfc_code *code, stmtblock_t 
*pblock,
     omp_do_clauses
       = gfc_trans_omp_clauses (&block, &clausesa[GFC_OMP_SPLIT_DO], code->loc);
   body = gfc_trans_omp_do (code, EXEC_OMP_SIMD, pblock ? pblock : &block,
-                          &clausesa[GFC_OMP_SPLIT_SIMD], omp_clauses);
+                          &clausesa[GFC_OMP_SPLIT_SIMD], omp_clauses, false);
   if (pblock == NULL)
     {
       if (TREE_CODE (body) != BIND_EXPR)
@@ -5181,7 +5186,7 @@ gfc_trans_omp_parallel_do (gfc_code *code, stmtblock_t 
*pblock,
        pushlevel ();
     }
   stmt = gfc_trans_omp_do (code, EXEC_OMP_DO, new_pblock,
-                          &clausesa[GFC_OMP_SPLIT_DO], omp_clauses);
+                          &clausesa[GFC_OMP_SPLIT_DO], omp_clauses, false);
   if (pblock == NULL)
     {
       if (TREE_CODE (stmt) != BIND_EXPR)
@@ -5424,7 +5429,8 @@ gfc_trans_omp_distribute (gfc_code *code, gfc_omp_clauses 
*clausesa)
     case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD:
     case EXEC_OMP_TEAMS_DISTRIBUTE_SIMD:
       stmt = gfc_trans_omp_do (code, EXEC_OMP_SIMD, &block,
-                              &clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE);
+                              &clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE,
+                              false);
       if (TREE_CODE (stmt) != BIND_EXPR)
        stmt = build3_v (BIND_EXPR, NULL, stmt, poplevel (1, 0));
       else
@@ -5480,7 +5486,7 @@ gfc_trans_omp_teams (gfc_code *code, gfc_omp_clauses 
*clausesa,
     case EXEC_OMP_TEAMS_DISTRIBUTE:
       stmt = gfc_trans_omp_do (code, EXEC_OMP_DISTRIBUTE, NULL,
                               &clausesa[GFC_OMP_SPLIT_DISTRIBUTE],
-                              NULL);
+                              NULL, false);
       break;
     default:
       stmt = gfc_trans_omp_distribute (code, clausesa);
@@ -5548,7 +5554,8 @@ gfc_trans_omp_target (gfc_code *code)
       break;
     case EXEC_OMP_TARGET_SIMD:
       stmt = gfc_trans_omp_do (code, EXEC_OMP_SIMD, &block,
-                              &clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE);
+                              &clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE,
+                              false);
       if (TREE_CODE (stmt) != BIND_EXPR)
        stmt = build3_v (BIND_EXPR, NULL, stmt, poplevel (1, 0));
       else
@@ -5617,7 +5624,8 @@ gfc_trans_omp_taskloop (gfc_code *code)
       break;
     case EXEC_OMP_TASKLOOP_SIMD:
       stmt = gfc_trans_omp_do (code, EXEC_OMP_SIMD, &block,
-                              &clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE);
+                              &clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE,
+                              false);
       if (TREE_CODE (stmt) != BIND_EXPR)
        stmt = build3_v (BIND_EXPR, NULL, stmt, poplevel (1, 0));
       else
@@ -5930,7 +5938,7 @@ gfc_trans_oacc_directive (gfc_code *code)
       return gfc_trans_oacc_construct (code);
     case EXEC_OACC_LOOP:
       return gfc_trans_omp_do (code, code->op, NULL, code->ext.omp_clauses,
-                              NULL);
+                              NULL, false);
     case EXEC_OACC_UPDATE:
     case EXEC_OACC_CACHE:
     case EXEC_OACC_ENTER_DATA:
@@ -5967,7 +5975,7 @@ gfc_trans_omp_directive (gfc_code *code)
     case EXEC_OMP_SIMD:
     case EXEC_OMP_TASKLOOP:
       return gfc_trans_omp_do (code, code->op, NULL, code->ext.omp_clauses,
-                              NULL);
+                              NULL, false);
     case EXEC_OMP_DISTRIBUTE_PARALLEL_DO:
     case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD:
     case EXEC_OMP_DISTRIBUTE_SIMD:
diff --git a/gcc/tree.h b/gcc/tree.h
index 7cc75fc..2fa7117 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -1485,6 +1485,11 @@ class auto_suppress_location_wrappers
 #define OMP_TARGET_COMBINED(NODE) \
   (OMP_TARGET_CHECK (NODE)->base.private_flag)
 
+/* True on an OACC_LOOP statement if it is part of a combined construct,
+   for example "#pragma acc kernels loop".  */
+#define OACC_LOOP_COMBINED(NODE) \
+  (OACC_LOOP_CHECK (NODE)->base.private_flag)
+
 /* Memory order for OMP_ATOMIC*.  */
 #define OMP_ATOMIC_MEMORY_ORDER(NODE) \
   (TREE_RANGE_CHECK (NODE, OMP_ATOMIC, \
-- 
2.8.1

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