[cc65] Static parameter passing

--- Dan <opendtv@yahoo.com> wrote:

> An additional related optimization, which I didn't
> mention in my first post, would be to pass
> parameters
> to leaf functions via 'registers' (zero page)
> instead
> of the stack. This would be done for static
> functions
> only.

I implemented this along with static parameter passing
for non-leaf functions, under the following
conditions:

* Cl (static locals) option enabled (can also be
controlled via pragma)
* function declared static
* function not variadic
* & operator not applied to function

Because of the last constraint, two-pass compilation
is required for static parameter passing (maybe this
is why it wasn't implemented before?)

Now it's possible to almost completely avoid using the
slow C stack (as long as you don't use seperate
compilation).

Ullrich, are you interested in any of these patches?

Dan



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