Committed as r274025 with approval in
https://gcc.gnu.org/ml/gcc-patches/2019-08/msg00146.html
$ svn diff -r274024:274025 -x -p
Index: ChangeLog
===================================================================
--- ChangeLog (Revision 274024)
+++ ChangeLog (Revision 274025)
@@ -1,5 +1,8 @@
2019-08-02 Bernd Edlinger <bernd.edlin...@hotmail.de>
+ * function.c (assign_parm_adjust_stack_rtl): Revise STRICT_ALIGNMENT
+ check to use targetm.slow_unaligned_access instead.
+
* function.c (assign_param_data_one): Remove unused data members.
2019-08-02 Steve Ellcey <sell...@marvell.com>
Index: function.c
===================================================================
--- function.c (Revision 274024)
+++ function.c (Revision 274025)
@@ -2811,8 +2811,9 @@ assign_parm_adjust_stack_rtl (struct assign_parm_d
ultimate type, don't use that slot after entry. We'll make another
stack slot, if we need one. */
if (stack_parm
- && ((STRICT_ALIGNMENT
- && GET_MODE_ALIGNMENT (data->nominal_mode) > MEM_ALIGN (stack_parm))
+ && ((GET_MODE_ALIGNMENT (data->nominal_mode) > MEM_ALIGN (stack_parm)
+ && targetm.slow_unaligned_access (data->nominal_mode,
+ MEM_ALIGN (stack_parm)))
|| (data->nominal_type
&& TYPE_ALIGN (data->nominal_type) > MEM_ALIGN (stack_parm)
&& MEM_ALIGN (stack_parm) < PREFERRED_STACK_BOUNDARY)))
