Re: A "Via Pascal" Modula 2 Compiler ?

On 2007-01-21, Tom Breeden <tmb@[EMAIL PROTECTED]
> wrote:
>>> out assembly code as a text asm file and sending it on to "as" and
then
>>> "ld". That's worked better than I expected, and I've followed the SYSV

>> ABI
>>> such that the Elf object file would probably link with the AOS4 C if I
>>> wanted to depend more on the C libs than I do. (of course, creating
good
>>> and totally correct assembly code is still pretty far off).
>> 
>> btw, how do you handle/how effective is your dead code elmination using
>> as/ld?
>
> Within procedures, the compiler removes dead code from the first
generated
> intermediate code via a (currently number of) p***** through the IC.
>
> At the module level, I am just linking in all the procedures of a
module,
> whether actually called by the built program or not. I have written a
> small front end to "ld" that runs before linking and analyzes all the
> module's im****ts and builds a <pgm>_startup assembly file which calls
> all the necessary init blocks and term blocks in the correct order, and
> is integrated with the RTS sup****ting HALT and (to be) EXCEPTIONS
> with respect to init/term execution in those cases.

If you put everything into correct sections, make your tables 
symbolic, you might be able to use ld parameter --gc-sections.