Set proper DECL_ALIGN in offload_handle_link_vars (PR94233)

	gcc/lto/
	PR middle-end/94233
        * lto.c (offload_handle_link_vars): Cleanup; call
	build_decl to ensure alignment is set.

gcc/lto/ChangeLog

+2020-01-29  Tobias Burnus  <tobias@codesourcery.com>
+
+	PR middle-end/94233
+	* lto.c (offload_handle_link_vars): Cleanup; call
+	build_decl to ensure alignment is set.
+
 2020-02-05  Martin Liska  <mliska@suse.cz>
 
 	PR lto/93489

gcc/lto/lto.c

@@ -561,18 +561,14 @@ offload_handle_link_vars (void)
 			  DECL_ATTRIBUTES (var->decl)))
       {
 	tree type = build_pointer_type (TREE_TYPE (var->decl));
-	tree link_ptr_var = make_node (VAR_DECL);
-	TREE_TYPE (link_ptr_var) = type;
-	TREE_USED (link_ptr_var) = 1;
-	TREE_STATIC (link_ptr_var) = 1;
-	SET_DECL_MODE (link_ptr_var, TYPE_MODE (type));
-	DECL_SIZE (link_ptr_var) = TYPE_SIZE (type);
-	DECL_SIZE_UNIT (link_ptr_var) = TYPE_SIZE_UNIT (type);
-	DECL_ARTIFICIAL (link_ptr_var) = 1;
 	tree var_name = DECL_ASSEMBLER_NAME (var->decl);
 	char *new_name
 	  = ACONCAT ((IDENTIFIER_POINTER (var_name), "_linkptr", NULL));
-	DECL_NAME (link_ptr_var) = get_identifier (new_name);
+	tree link_ptr_var = build_decl (UNKNOWN_LOCATION, VAR_DECL,
+					get_identifier (new_name), type);
+	TREE_USED (link_ptr_var) = 1;
+	TREE_STATIC (link_ptr_var) = 1;
+	DECL_ARTIFICIAL (link_ptr_var) = 1;
 	SET_DECL_ASSEMBLER_NAME (link_ptr_var, DECL_NAME (link_ptr_var));
 	SET_DECL_VALUE_EXPR (var->decl, build_simple_mem_ref (link_ptr_var));
 	DECL_HAS_VALUE_EXPR_P (var->decl) = 1;