* config/bfin/bfin.c (struct machine_function): New member

	* config/bfin/bfin.c (struct machine_function): New member
	has_loopreg_clobber.
	(bfin_expand_movmem): Set it when generating memcpy insns.
	(n_regs_saved_by_prologue, expand_prologue_reg_save,
	expand_epilogue_reg_restore): If we have hardware loops,
	memcpy insns (indicated by has_loopreg_clobber) or function
	calls, we need to save the loop registers.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@141425 138bc75d-0d04-0410-961f-82ee72b054a4