* predict.c (test_prediction_value_range): Use -1U instead of -1

	* predict.c (test_prediction_value_range): Use -1U instead of -1
	to avoid narrowing conversion warning.
	* dumpfile.c (dump_options): Wrap all value into dump_flags_t cast
	to avoid narrowing conversion warning.
	* opt-functions.awk (var_ref): Return (unsigned short) -1 instead of
	-1.
	* optc-gen.awk (END): Expect (unsigned short) -1 instead of -1.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@249683 138bc75d-0d04-0410-961f-82ee72b054a4