description: Represent groups of less funtions than this as indices into
an array
command-line: –translation-withsmallfuncsets
option type: integer option
default: 0
Represent function sets smaller than this option’s value as an integer instead
of a function pointer. A call is then done via a switch on that integer, which
allows inlining etc. Small numbers for this can speed up PyPy (try 5).