options, lto: Optimize streaming of optimization nodes

options, lto: Optimize streaming of optimization nodes

When working on the previous patch, I've noticed that all cl_optimization
fields appart from strings are streamed with bp_pack_value (..., 64); so we
waste quite a lot of space, given that many of the options are just booleans
or char options and there are 450-ish of them.

Fixed by streaming the number of bits the corresponding fields have.
While for char fields we have also range information, except for 3
it is either -128, 127 or 0, 255, so it didn't seem worth it to bother
with using range-ish packing.

2020-09-16  Jakub Jelinek  <jakub@redhat.com>

	* optc-save-gen.awk: In cl_optimization_stream_out use
	bp_pack_var_len_{int,unsigned} instead of bp_pack_value.  In
	cl_optimization_stream_in use bp_unpack_var_len_{int,unsigned}
	instead of bp_unpack_value.  Formatting fix.