gcc/

gcc/
	* loop-iv.c: Include rtl-iter.h.
	(find_single_def_src): New function.
	(replace_single_def_regs): Turn from being a for_each_rtx callback
	to being a function that examines each subrtx itself.
	(replace_in_expr, simplify_using_initial_values): Update accordingly.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@214645 138bc75d-0d04-0410-961f-82ee72b054a4