Re: Link time optimizations

> ... Normally all compilers generate a jump PC relative instruction
> that generates no relocation or fixup... Invisible damm it!


Procedure calls are segment-relative and this is also invisible.
Anyway, you also have to consider the possibility of indirect call
(via pointer to function). (Another "damn it!" I guess)


I wonder how Topspeed linker does it. Or perhaps I
misread/misunderstood their promotional article. Or it only applies to
their own object file which might include extra stuff. (May be I
should use past tense here because I haven't seen anything that spells
Topspeed for quite a while).


Nor Jaidi jaidi@ubd.edu.bn
Department of Mathematics
Universiti Brunei Darussalam
[Function pointers are easy, since they show up as relocation items.
It's long seemed to me that either linkers should be a lot smarter, so
we can do more link-time optimizations, or they should be a lot
dumber, with all the work done in the assembler or above. -John]


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