gcc/
	PR target/28181
	* config/m68k/m68k-protos.h (m68k_secondary_reload_class): Declare.
	(m68k_preferred_reload_class): Likewise.
	* config/m68k/m68k.h (HARD_REGNO_MODE_OK): Remove duplicated comment.
	(SECONDARY_RELOAD_CLASS): Define.
	(PREFERRED_RELOAD_CLASS): Use m68k_preferred_reload_class.
	(LIMIT_RELOAD_CLASS): Delete.
	* config/m68k/m68k.c (m68k_regno_mode_ok): Don't prevent address
	registers from storing bytes.
	(m68k_secondary_reload_class): New function.
	(m68k_preferred_reload_class): Likewise.

gcc/testsuite/
	* gcc.c-torture/compile/m68k-byte-addr.c: New test.

From-SVN: r122609