re PR middle-end/84877 (Local stack copy of BLKmode parameter on the stack is not aligned when the requested alignment exceeds MAX_SUPPORTED_STACK_ALIGNMENT)

	PR middle-end/84877
	PR bootstrap/88450
	* function.c (assign_stack_local_1): Revert the 2018-11-21 changes.
	(assign_parm_setup_block): Do the argument slot realignment here
	instead.

From-SVN: r267812