https://gcc.gnu.org/g:26fb2c8a939bab5e4dc50c70b7baf943caf620fb

commit 26fb2c8a939bab5e4dc50c70b7baf943caf620fb
Author: Mikael Morin <[email protected]>
Date:   Sun Jun 29 14:07:23 2025 +0200

    fortran: array descriptor: Add accessors for the rank field
    
    Regression tested on powerpc64le-unknown-linux-gnu.  OK for master?
    
    -- >8 --
    
    Add accessor functions to get or set the value of the rank field of
    array descriptors, and remove from the public API the function giving
    direct acces to the field.
    
    gcc/fortran/ChangeLog:
    
            * trans-descriptor.cc (gfc_conv_descriptor_rank): Make static and
            rename ...
            (conv_descriptor_rank): ... to this.
            (gfc_conv_descriptor_rank_get, gfc_conv_descriptor_rank_set): New
            functions.
            * trans-descriptor.h (gfc_conv_descriptor_rank): Remove declaration.
            (gfc_conv_descriptor_rank_get, gfc_conv_descriptor_rank_set): New
            declarations.
            * trans-array.cc (gfc_trans_create_temp_array,
            gfc_conv_ss_startstride, gfc_tree_array_size,
            gfc_conv_array_parameter, gfc_full_array_size,
            duplicate_allocatable_coarray): Use gfc_conv_descriptor_rank_get
            to get the value of the rank field, and gfc_conv_descriptor_rank_set
            to set it.
            * trans-decl.cc (gfc_conv_cfi_to_gfc): Likewise.
            * trans-expr.cc (gfc_conv_variable, gfc_conv_gfc_desc_to_cfi_desc,
            conv_null_actual, gfc_trans_structure_assign): Likewise.
            * trans-intrinsic.cc (gfc_conv_intrinsic_rank,
            gfc_conv_intrinsic_bound, gfc_conv_intrinsic_sizeof,
            gfc_conv_associated): Likewise.
            * trans-openmp.cc (gfc_omp_get_array_size): Likewise.
            * trans-stmt.cc (gfc_trans_select_rank_cases): Likewise.

Diff:
---
 gcc/fortran/trans-array.cc      | 16 ++++++----------
 gcc/fortran/trans-decl.cc       |  2 +-
 gcc/fortran/trans-descriptor.cc | 33 +++++++++++++++++++++++++++++++--
 gcc/fortran/trans-descriptor.h  |  4 +++-
 gcc/fortran/trans-expr.cc       | 24 +++++++-----------------
 gcc/fortran/trans-intrinsic.cc  | 10 +++++-----
 gcc/fortran/trans-openmp.cc     |  2 +-
 gcc/fortran/trans-stmt.cc       |  2 +-
 8 files changed, 55 insertions(+), 38 deletions(-)

diff --git a/gcc/fortran/trans-array.cc b/gcc/fortran/trans-array.cc
index fa5972958ca2..086d6dc5761d 100644
--- a/gcc/fortran/trans-array.cc
+++ b/gcc/fortran/trans-array.cc
@@ -1257,9 +1257,7 @@ gfc_trans_create_temp_array (stmtblock_t * pre, 
stmtblock_t * post, gfc_ss * ss,
          gfc_add_modify (pre, tmp, dtype);
 
          /* These transformational functions change the rank.  */
-         tmp = gfc_conv_descriptor_rank (desc);
-         gfc_add_modify (pre, tmp,
-                         build_int_cst (TREE_TYPE (tmp), ss->loop->dimen));
+         gfc_conv_descriptor_rank_set (pre, desc, ss->loop->dimen);
          fcn_ss->info->class_container = NULL_TREE;
        }
 
@@ -4909,7 +4907,7 @@ done:
                          && (gfc_option.allow_std & GFC_STD_F202Y)))
                      gcc_assert (se.pre.head == NULL_TREE
                                  && se.post.head == NULL_TREE);
-                   rank = gfc_conv_descriptor_rank (se.expr);
+                   rank = gfc_conv_descriptor_rank_get (se.expr);
                    tmp = fold_build2_loc (input_location, MINUS_EXPR,
                                           gfc_array_index_type,
                                           fold_convert (gfc_array_index_type,
@@ -8513,7 +8511,7 @@ gfc_tree_array_size (stmtblock_t *block, tree desc, 
gfc_expr *expr, tree dim)
   enum gfc_array_kind akind = GFC_TYPE_ARRAY_AKIND (TREE_TYPE (desc));
   if (expr == NULL || expr->rank < 0)
     rank = fold_convert (signed_char_type_node,
-                        gfc_conv_descriptor_rank (desc));
+                        gfc_conv_descriptor_rank_get (desc));
   else
     rank = build_int_cst (signed_char_type_node, expr->rank);
 
@@ -8918,8 +8916,7 @@ gfc_conv_array_parameter (gfc_se *se, gfc_expr *expr, 
bool g77,
                gfc_conv_descriptor_stride_get (se->expr, gfc_index_zero_node));
              gfc_add_modify (&block, gfc_conv_descriptor_dtype (arr),
                              gfc_conv_descriptor_dtype (se->expr));
-             gfc_add_modify (&block, gfc_conv_descriptor_rank (arr),
-                             build_int_cst (signed_char_type_node, 1));
+             gfc_conv_descriptor_rank_set (&block, arr, 1);
              gfc_conv_descriptor_span_set (&block, arr,
                                            gfc_conv_descriptor_span_get (arr));
              gfc_conv_descriptor_offset_set (&block, arr, gfc_index_zero_node);
@@ -9213,7 +9210,7 @@ gfc_full_array_size (stmtblock_t *block, tree decl, int 
rank)
   tree nelems;
   tree tmp;
   if (rank < 0)
-    idx = gfc_conv_descriptor_rank (decl);
+    idx = gfc_conv_descriptor_rank_get (decl);
   else
     idx = gfc_rank_cst[rank - 1];
   nelems = gfc_conv_descriptor_ubound_get (decl, idx);
@@ -9423,8 +9420,7 @@ duplicate_allocatable_coarray (tree dest, tree dest_tok, 
tree src, tree type,
   else
     {
       /* Set the rank or unitialized memory access may be reported.  */
-      tmp = gfc_conv_descriptor_rank (dest);
-      gfc_add_modify (&globalblock, tmp, build_int_cst (TREE_TYPE (tmp), 
rank));
+      gfc_conv_descriptor_rank_set (&globalblock, dest, rank);
 
       if (rank)
        nelems = gfc_full_array_size (&globalblock, src, rank);
diff --git a/gcc/fortran/trans-decl.cc b/gcc/fortran/trans-decl.cc
index e2c46f22881d..814e1372c0a6 100644
--- a/gcc/fortran/trans-decl.cc
+++ b/gcc/fortran/trans-decl.cc
@@ -7439,7 +7439,7 @@ gfc_conv_cfi_to_gfc (stmtblock_t *init, stmtblock_t 
*finally,
     {
       /* Set gfc->dtype.rank, if assumed-rank.  */
       rank = gfc_get_cfi_desc_rank (cfi);
-      gfc_add_modify (&block, gfc_conv_descriptor_rank (gfc_desc), rank);
+      gfc_conv_descriptor_rank_set (&block, gfc_desc, rank);
     }
   else if (!GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (gfc_desc)))
     /* In that case, the CFI rank and the declared rank can differ.  */
diff --git a/gcc/fortran/trans-descriptor.cc b/gcc/fortran/trans-descriptor.cc
index c02a3fd5282a..a00bed09f943 100644
--- a/gcc/fortran/trans-descriptor.cc
+++ b/gcc/fortran/trans-descriptor.cc
@@ -150,8 +150,10 @@ gfc_conv_descriptor_span_set (stmtblock_t *block, tree 
desc, tree value)
 }
 
 
-tree
-gfc_conv_descriptor_rank (tree desc)
+/* Return a reference to the rank of array descriptor DESC.  */
+
+static tree
+conv_descriptor_rank (tree desc)
 {
   tree tmp;
   tree dtype;
@@ -164,6 +166,33 @@ gfc_conv_descriptor_rank (tree desc)
                          dtype, tmp, NULL_TREE);
 }
 
+/* Return the rank of the array descriptor DESC.  */
+
+tree
+gfc_conv_descriptor_rank_get (tree desc)
+{
+  return conv_descriptor_rank (desc);
+}
+
+/* Add code to BLOCK setting to VALUE the rank of the array descriptor DESC.  
*/
+
+void
+gfc_conv_descriptor_rank_set (stmtblock_t *block, tree desc, tree value)
+{
+  location_t loc = input_location;
+  tree t = conv_descriptor_rank (desc);
+  gfc_add_modify_loc (loc, block, t,
+                     fold_convert_loc (loc, TREE_TYPE (t), value));
+}
+
+/* Add code to BLOCK setting to VALUE the rank of the array descriptor DESC.  
*/
+
+void
+gfc_conv_descriptor_rank_set (stmtblock_t *block, tree desc, int value)
+{
+  gfc_conv_descriptor_rank_set (block, desc, gfc_rank_cst[value]);
+}
+
 
 /* Return a reference to descriptor DESC's format version.  */
 
diff --git a/gcc/fortran/trans-descriptor.h b/gcc/fortran/trans-descriptor.h
index ec60d7cb656b..cdf2295abe47 100644
--- a/gcc/fortran/trans-descriptor.h
+++ b/gcc/fortran/trans-descriptor.h
@@ -21,7 +21,6 @@ along with GCC; see the file COPYING3.  If not see
 
 
 tree gfc_conv_descriptor_dtype (tree);
-tree gfc_conv_descriptor_rank (tree);
 tree gfc_conv_descriptor_attribute (tree);
 tree gfc_conv_descriptor_type (tree);
 tree gfc_get_descriptor_dimension (tree);
@@ -32,6 +31,7 @@ tree gfc_conv_descriptor_data_get (tree);
 tree gfc_conv_descriptor_offset_get (tree);
 tree gfc_conv_descriptor_elem_len_get (tree);
 tree gfc_conv_descriptor_version_get (tree);
+tree gfc_conv_descriptor_rank_get (tree);
 tree gfc_conv_descriptor_span_get (tree);
 
 tree gfc_conv_descriptor_stride_get (tree, tree);
@@ -42,6 +42,8 @@ void gfc_conv_descriptor_data_set (stmtblock_t *, tree, tree);
 void gfc_conv_descriptor_offset_set (stmtblock_t *, tree, tree);
 void gfc_conv_descriptor_elem_len_set (stmtblock_t *, tree, tree);
 void gfc_conv_descriptor_version_set (stmtblock_t *, tree, tree);
+void gfc_conv_descriptor_rank_set (stmtblock_t *, tree, tree);
+void gfc_conv_descriptor_rank_set (stmtblock_t *, tree, int);
 void gfc_conv_descriptor_span_set (stmtblock_t *, tree, tree);
 void gfc_conv_descriptor_stride_set (stmtblock_t *, tree, tree, tree);
 void gfc_conv_descriptor_lbound_set (stmtblock_t *, tree, tree, tree);
diff --git a/gcc/fortran/trans-expr.cc b/gcc/fortran/trans-expr.cc
index 230665ef9c57..4a87cf717d59 100644
--- a/gcc/fortran/trans-expr.cc
+++ b/gcc/fortran/trans-expr.cc
@@ -3329,7 +3329,7 @@ gfc_conv_variable (gfc_se * se, gfc_expr * expr)
       char *msg;
 
       dim = fold_convert (signed_char_type_node,
-                         gfc_conv_descriptor_rank (se->expr));
+                         gfc_conv_descriptor_rank_get (se->expr));
       dim = fold_build2_loc (input_location, MINUS_EXPR, signed_char_type_node,
                             dim, build_int_cst (signed_char_type_node, 1));
       lower = gfc_conv_descriptor_lbound_get (se->expr, dim);
@@ -6158,7 +6158,8 @@ gfc_conv_gfc_desc_to_cfi_desc (gfc_se *parmse, gfc_expr 
*e, gfc_symbol *fsym)
   gfc_add_modify (&block, tmp,
                  build_int_cst (TREE_TYPE (tmp), CFI_VERSION));
   if (e->rank < 0)
-    rank = fold_convert (signed_char_type_node, gfc_conv_descriptor_rank 
(gfc));
+    rank = fold_convert (signed_char_type_node,
+                        gfc_conv_descriptor_rank_get (gfc));
   else
     rank = build_int_cst (signed_char_type_node, e->rank);
   tmp = gfc_get_cfi_desc_rank (cfi);
@@ -6750,12 +6751,9 @@ conv_null_actual (gfc_se * parmse, gfc_expr * e, 
gfc_symbol * fsym)
             correct rank.  */
          if (fsym->as && fsym->as->type == AS_ASSUMED_RANK)
            {
-             tree rank;
              tree tmp = parmse->expr;
              tmp = gfc_conv_scalar_to_descriptor (parmse, tmp, fsym->attr);
-             rank = gfc_conv_descriptor_rank (tmp);
-             gfc_add_modify (&parmse->pre, rank,
-                             build_int_cst (TREE_TYPE (rank), e->rank));
+             gfc_conv_descriptor_rank_set (&parmse->pre, tmp, e->rank);
              parmse->expr = gfc_build_addr_expr (NULL_TREE, tmp);
            }
          else
@@ -6805,13 +6803,10 @@ conv_null_actual (gfc_se * parmse, gfc_expr * e, 
gfc_symbol * fsym)
           For an assumed-rank dummy we provide a descriptor that passes
           the correct rank.  */
        {
-         tree rank;
          tree tmp = parmse->expr;
 
          tmp = gfc_conv_scalar_to_descriptor (parmse, tmp, gfc_expr_attr (e));
-         rank = gfc_conv_descriptor_rank (tmp);
-         gfc_add_modify (&parmse->pre, rank,
-                         build_int_cst (TREE_TYPE (rank), e->rank));
+         gfc_conv_descriptor_rank_set (&parmse->pre, tmp, e->rank);
          gfc_conv_descriptor_data_set (&parmse->pre, tmp, null_pointer_node);
          parmse->expr = gfc_build_addr_expr (NULL_TREE, tmp);
        }
@@ -6828,11 +6823,7 @@ conv_null_actual (gfc_se * parmse, gfc_expr * e, 
gfc_symbol * fsym)
          tmp = gfc_conv_scalar_to_descriptor (parmse, tmp, fsym->attr);
          dummy_rank = fsym->as ? fsym->as->rank : 0;
          if (dummy_rank > 0)
-           {
-             tree rank = gfc_conv_descriptor_rank (tmp);
-             gfc_add_modify (&parmse->pre, rank,
-                             build_int_cst (TREE_TYPE (rank), dummy_rank));
-           }
+           gfc_conv_descriptor_rank_set (&parmse->pre, tmp, dummy_rank);
          gfc_conv_descriptor_data_set (&parmse->pre, tmp, null_pointer_node);
          parmse->expr = gfc_build_addr_expr (NULL_TREE, tmp);
        }
@@ -10279,8 +10270,7 @@ gfc_trans_structure_assign (tree dest, gfc_expr * expr, 
bool init, bool coarray)
                rank = 1;
              size = build_zero_cst (size_type_node);
              desc = field;
-             gfc_add_modify (&block, gfc_conv_descriptor_rank (desc),
-                             build_int_cst (signed_char_type_node, rank));
+             gfc_conv_descriptor_rank_set (&block, desc, rank);
            }
          else
            {
diff --git a/gcc/fortran/trans-intrinsic.cc b/gcc/fortran/trans-intrinsic.cc
index ffce0135f6f9..a3e0a45ba536 100644
--- a/gcc/fortran/trans-intrinsic.cc
+++ b/gcc/fortran/trans-intrinsic.cc
@@ -2290,7 +2290,7 @@ gfc_conv_intrinsic_rank (gfc_se *se, gfc_expr *expr)
   gfc_add_block_to_block (&se->pre, &argse.pre);
   gfc_add_block_to_block (&se->post, &argse.post);
 
-  se->expr = gfc_conv_descriptor_rank (argse.expr);
+  se->expr = gfc_conv_descriptor_rank_get (argse.expr);
   se->expr = fold_convert (gfc_get_int_type (gfc_default_integer_kind),
                           se->expr);
 }
@@ -2479,7 +2479,7 @@ gfc_conv_intrinsic_bound (gfc_se * se, gfc_expr * expr, 
enum gfc_isym_id op)
           cond = fold_build2_loc (input_location, LT_EXPR, logical_type_node,
                                  bound, build_int_cst (TREE_TYPE (bound), 0));
          if (as && as->type == AS_ASSUMED_RANK)
-           tmp = gfc_conv_descriptor_rank (desc);
+           tmp = gfc_conv_descriptor_rank_get (desc);
          else
            tmp = gfc_rank_cst[GFC_TYPE_ARRAY_RANK (TREE_TYPE (desc))];
           tmp = fold_build2_loc (input_location, GE_EXPR, logical_type_node,
@@ -2574,7 +2574,7 @@ gfc_conv_intrinsic_bound (gfc_se * se, gfc_expr * expr, 
enum gfc_isym_id op)
        {
          tree minus_one = build_int_cst (gfc_array_index_type, -1);
          tree rank = fold_convert (gfc_array_index_type,
-                                   gfc_conv_descriptor_rank (desc));
+                                   gfc_conv_descriptor_rank_get (desc));
          rank = fold_build2_loc (input_location, PLUS_EXPR,
                                  gfc_array_index_type, rank, minus_one);
 
@@ -8440,7 +8440,7 @@ gfc_conv_intrinsic_sizeof (gfc_se *se, gfc_expr *expr)
           stmtblock_t body;
 
          tmp = fold_convert (gfc_array_index_type,
-                             gfc_conv_descriptor_rank (argse.expr));
+                             gfc_conv_descriptor_rank_get (argse.expr));
          loop_var = gfc_create_var (gfc_array_index_type, "i");
          gfc_add_modify (&argse.pre, loop_var, gfc_index_zero_node);
           exit_label = gfc_build_label_decl (NULL_TREE);
@@ -9252,7 +9252,7 @@ gfc_conv_associated (gfc_se *se, gfc_expr *expr)
          gfc_conv_expr_lhs (&arg1se, arg1->expr);
          if (arg1->expr->rank == -1)
            {
-             tmp = gfc_conv_descriptor_rank (arg1se.expr);
+             tmp = gfc_conv_descriptor_rank_get (arg1se.expr);
              tmp = fold_build2_loc (input_location, MINUS_EXPR,
                                     TREE_TYPE (tmp), tmp,
                                     build_int_cst (TREE_TYPE (tmp), 1));
diff --git a/gcc/fortran/trans-openmp.cc b/gcc/fortran/trans-openmp.cc
index 5e4191809832..0b5ea14629a9 100644
--- a/gcc/fortran/trans-openmp.cc
+++ b/gcc/fortran/trans-openmp.cc
@@ -2042,7 +2042,7 @@ gfc_omp_get_array_size (location_t loc, tree desc, 
gimple_seq *seq)
   tree end;
   if (GFC_TYPE_ARRAY_AKIND (TREE_TYPE (desc)) == GFC_ARRAY_ASSUMED_SHAPE_CONT
       || GFC_TYPE_ARRAY_AKIND (TREE_TYPE (desc)) == GFC_ARRAY_ASSUMED_SHAPE)
-    end = gfc_conv_descriptor_rank (desc);
+    end = gfc_conv_descriptor_rank_get (desc);
   else
     end = build_int_cst (signed_char_type_node,
                         GFC_TYPE_ARRAY_RANK (TREE_TYPE (desc)));
diff --git a/gcc/fortran/trans-stmt.cc b/gcc/fortran/trans-stmt.cc
index 5eaafbbcc7e4..fd82336bbfb1 100644
--- a/gcc/fortran/trans-stmt.cc
+++ b/gcc/fortran/trans-stmt.cc
@@ -3976,7 +3976,7 @@ gfc_trans_select_rank_cases (gfc_code * code)
   /* Calculate the switch expression.  */
   gfc_init_se (&se, NULL);
   gfc_conv_expr_descriptor (&se, code->expr1);
-  rank = gfc_conv_descriptor_rank (se.expr);
+  rank = gfc_conv_descriptor_rank_get (se.expr);
   rank = gfc_evaluate_now (rank, &block);
   symbol_attribute attr = gfc_expr_attr (code->expr1);
   if (!attr.pointer && !attr.allocatable)

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