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	* config/s390/s390.c (struct s390_frame_layout): Remove
	save_backchain_p.
	(s390_frame_info, s390_emit_prologue): Replace occurrences of
	save_backchain_p with TARGET_BACKCHAIN.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@93181 138bc75d-0d04-0410-961f-82ee72b054a4