re PR rtl-optimization/17428 (internal compiler error: in spill_failure, at reload1.c:1880 (-fspeculative-prefetching))

	PR target/17428
	* cfgrtl.c (safe_insert_insn_on_edge): Avoid extending life range of hard
	registers.
	* value-prof.c (insn_prefetch_values_to_profile): Only scan normal insns.

	* value-prof.c (rtl_find_values_to_profile): Do not look for values to
	profile in libcalls.

From-SVN: r95007