* tree-dfa.c (remove_referenced_var): New function.

	* tree-ssa-live.c (remove_unused_locals): Walk referenced vars and
	prune referenced vars list too.
	* tree-flow.h (remove_referenced_var): Declare.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120767 138bc75d-0d04-0410-961f-82ee72b054a4