trans.h (struct gfc_ss_info): Move can_be_null_ref component from the…

trans.h (struct gfc_ss_info): Move can_be_null_ref component from the data::scalar subcomponent to the toplevel.

fortran/
	* trans.h (struct gfc_ss_info): Move can_be_null_ref component from
	the data::scalar subcomponent to the toplevel.
	* trans-expr.c (gfc_conv_expr): Update component reference.
	* trans-array.c (gfc_add_loop_ss_code): Ditto.
	(gfc_walk_elemental_function_args): Ditto.  Move the conditional setting
	the field out of the scalar-only block.

From-SVN: r184893

gcc/fortran/ChangeLog

+2012-03-04  Mikael Morin  <mikael@gcc.gnu.org>
+
+	* trans.h (struct gfc_ss_info): Move can_be_null_ref component from
+	the data::scalar subcomponent to the toplevel.
+	* trans-expr.c (gfc_conv_expr): Update component reference.
+	* trans-array.c (gfc_add_loop_ss_code): Ditto.
+	(gfc_walk_elemental_function_args): Ditto.  Move the conditional setting
+	the field out of the scalar-only block.
+
 2012-03-04  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	PR fortran/36160

gcc/fortran/trans-array.c

@@ -2448,7 +2448,7 @@ gfc_add_loop_ss_code (gfc_loopinfo * loop, gfc_ss * ss, bool subscript,
 	case GFC_SS_REFERENCE:
 	  /* Scalar argument to elemental procedure.  */
 	  gfc_init_se (&se, NULL);
-	  if (ss_info->data.scalar.can_be_null_ref)
+	  if (ss_info->can_be_null_ref)
 	    {
 	      /* If the actual argument can be absent (in other words, it can
 		 be a NULL reference), don't try to evaluate it; pass instead
@@ -8493,17 +8493,18 @@ gfc_walk_elemental_function_args (gfc_ss * ss, gfc_actual_arglist *arg,
 	  newss = gfc_get_scalar_ss (head, arg->expr);
 	  newss->info->type = type;
 
-	  if (dummy_arg != NULL
-	      && dummy_arg->sym->attr.optional
-	      && arg->expr->expr_type == EXPR_VARIABLE
-	      && (gfc_expr_attr (arg->expr).optional
-		  || gfc_expr_attr (arg->expr).allocatable
-		  || gfc_expr_attr (arg->expr).pointer))
-	    newss->info->data.scalar.can_be_null_ref = true;
 	}
       else
 	scalar = 0;
 
+      if (dummy_arg != NULL
+	  && dummy_arg->sym->attr.optional
+	  && arg->expr->expr_type == EXPR_VARIABLE
+	  && (gfc_expr_attr (arg->expr).optional
+	      || gfc_expr_attr (arg->expr).allocatable
+	      || gfc_expr_attr (arg->expr).pointer))
+	newss->info->can_be_null_ref = true;
+
       head = newss;
       if (!tail)
         {

gcc/fortran/trans-expr.c

@@ -5458,7 +5458,7 @@ gfc_conv_expr (gfc_se * se, gfc_expr * expr)
       se->expr = ss_info->data.scalar.value;
       /* If the reference can be NULL, the value field contains the reference,
 	 not the value the reference points to (see gfc_add_loop_ss_code).  */
-      if (ss_info->data.scalar.can_be_null_ref)
+      if (ss_info->can_be_null_ref)
 	se->expr = build_fold_indirect_ref_loc (input_location, se->expr);
 
       se->string_length = ss_info->string_length;

gcc/fortran/trans.h

@@ -198,9 +198,6 @@ typedef struct gfc_ss_info
     struct
     {
       tree value;
-      /* Tells whether the reference can be null in the GFC_SS_REFERENCE case.
-	 Used to handle elemental procedures' optional arguments.  */
-      bool can_be_null_ref;
     }
     scalar;
 
@@ -223,6 +220,11 @@ typedef struct gfc_ss_info
 
   /* Suppresses precalculation of scalars in WHERE assignments.  */
   unsigned where:1;
+
+  /* Tells whether the SS is for an actual argument which can be a NULL
+     reference.  In other words, the associated dummy argument is OPTIONAL.
+     Used to handle elemental procedures.  */
+  bool can_be_null_ref;
 }
 gfc_ss_info;