(new_elt_loc_list, cselib_process_insn, cselib_init): Keep track on whether
	we are inside libcall.
	* cselib.h (elt_loc_list): Add in_libcall.
	* gcse.c (do_local_cprop): Do not copy propagate using insns
	in libcalls.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@61023 138bc75d-0d04-0410-961f-82ee72b054a4