[Chicken-hackers] [PATCH] Fix #757 by adding inlineable versions of srfi-4 accessors, length checks and predicates

[Peter Bex]

Hi all,

Here's a reasonably straightforward patch to make XXXvector-ref,
XXXvector-set!, XXXvector-length and XXXvector? inlineable, as
per #757.  The predicate wasn't really part of the ticket but it
seemed like a good thing to add (we can use it instead of copy/pasting
all the checks inside the accessors).

It's a bit ugly because it adds quite a large swath of code to
runtime.c, but it should definitely speed things up.

Some notes/questions:

- Could these be added to lfa2 for predicate extinguishing and
   perhaps unboxing accessors too?  How would that work?
- Should we move the constructors to runtime.c as well, like
   we have C_vector and C_a_i_vector?  I think it's probably
   overkill, but who knows.
- Should we add a special case rewrite to c-platform.scm like
   we have rewrite-make-vector?  Same here, probably total
   overkill.

Cheers,
Peter

0001-Add-inlined-srfi-4-accessors-predicates-and-length-p.patch
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