[fpc-devel] -i and -Cp

[Tomas Hajny]

On Wed, October 17, 2012 16:25, Pierre Free Pascal wrote:
> You are right:
> muller at deluxe:~/pas/test$ ppcsparc hello
> muller at deluxe:~/pas/test$ ppcsparc hello -CpXX
> Error: Illegal parameter: -CpXX
> muller at deluxe:~/pas/test$ ppcsparc hello -Cp"sparc v7"
> muller at deluxe:~/pas/test$ ppcsparc hello -Cp"sparc v8"
> muller at deluxe:~/pas/test$ ppcsparc hello -Cp"sparc v9"
> muller at deluxe:~/pas/test$ ppcsparc hello -Cp"sparc v19"
> Error: Illegal parameter: -Cpsparc v19
>
> But I didn't find any use of cputype current_settings field
> in compiler/sparc directory sources,
> so the generated result should not change...

If the field/value isn't used yet, wouldn't it make sense to change the
texts so that they use an underscore instead of space? I believe that it
makes life easier for everyone and helps to avoid similar questions in the
future. It seems that GCC uses just v7/v8/v9 (without "SPARC") so that the
space doesn't seem to come from an attempt for alignment with GCC or
something like that.

Regarding Marks attempt - if I understand it correctly (based on
information in Wikipedia ;-) ), Sparc v7 supports no HW multiplication /
division. So a simple check may be to write a one liner containing
multiplication, compiling it with any ppcsparc (or ppccrosssparc) while
using the -s parameter and then checking the generated assembly for use of
the mul/div asm instructions...

Tomas