line: Allow optimisation of div/rem
line: Allow optimisation of div/rem

Before:
test bench_executing_line_number_programs ... bench: 173,505 ns/iter (+/- 4,188)

After:
test bench_executing_line_number_programs ... bench: 161,251 ns/iter (+/- 4,392)

gimli-rs/gimli,gimli-rs/gimli