re PR rtl-optimization/45678 (crash on vector code with -m32 -msse)

	PR middle-end/45678
	* cfgexpand.c (expand_one_stack_var_at): Use
	crtl->max_used_stack_slot_alignment as max_align, instead
	of maximum of that and PREFERRED_STACK_BOUNDARY.
	Don't call update_stack_alignment.

From-SVN: r164454

gcc/ChangeLog

+2010-09-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/45678
+	* cfgexpand.c (expand_one_stack_var_at): Use
+	crtl->max_used_stack_slot_alignment as max_align, instead
+	of maximum of that and PREFERRED_STACK_BOUNDARY.
+	Don't call update_stack_alignment.
+
 2010-09-20  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* langhooks.h (struct lang_hooks_for_types): Remove hash_types field.

gcc/cfgexpand.c

@@ -738,12 +738,10 @@ expand_one_stack_var_at (tree decl, HOST_WIDE_INT offset)
       offset -= frame_phase;
       align = offset & -offset;
       align *= BITS_PER_UNIT;
-      max_align = MAX (crtl->max_used_stack_slot_alignment,
-		       PREFERRED_STACK_BOUNDARY);
+      max_align = crtl->max_used_stack_slot_alignment;
       if (align == 0 || align > max_align)
 	align = max_align;
 
-      update_stack_alignment (align);
       DECL_ALIGN (decl) = align;
       DECL_USER_ALIGN (decl) = 0;
     }