gh-87092: move assembler related code from compile.c to assemble.c by iritkatriel · Pull Request #103277 · python/cpython

There used to be just assemble(C) which takes the compiler and and does all the optimization and assembly. I split out assemble_code_unit (which takes just the c->u and not the whole c) and does most of what used to be in assemble(). So the name was always incorrect (assemble() called the optimizer). I think the reason it was done like this is that assemble() gets called from a number of places in the compiler (lambda, class, module, etc). So it was convenient to have one function that does opt+assemble and returns a code object.

We can rename assemble() and assemble_code_unit(). Any suggestions what to call it? something like instr_sequence_to_code_object()?