re PR middle-end/18882 (wrong results with complex long double)

re PR middle-end/18882 (wrong results with complex long double)

	PR middle-end/18882
	* function.c (assign_stack_local_1): Use BITS_PER_UNIT alignment
	when passed -2 as 'align'.
	(put_var_into_stack): Adjust calls to put_reg_into_stack.
	When passed a CONCAT, instruct put_reg_into_stack to use
	a consecutive stack slot for the second part.
	(put_reg_into_stack): Remove 'promoted_mode' parameter, add
	'consecutive_p' parameter.  Retrieve the register mode from 'reg'.
	When consecutive_p is true, instruct assign_stack_local_1 to use
	BITS_PER_UNIT alignment.
	(put_addressof_into_stack): Adjust call to put_reg_into_stack.

From-SVN: r92262