[Devel] gcc & PPC [was: Question about optimizing FT_MulFix]

[Tom Kacvinsky]

I wouldn't be surprised if gcc gets lots more PPC optimzations in the future,
now that Apple's compiler group is working primarily on gcc (and not MrC).

Tom

On Tue, 1 May 2001, Nathan Hurst wrote:

> As a followup:
>
> I'm surprised about the slowness of version 5 - the powerpc compiler
> writer's manual makes a big deal about avoiding branches when possible
> using the condition code registers(which aren't used by gcc) and the
> select instructions(a machine code equivalent of c=(condition
> register)?a:b).  If I knew how to compile ppc asm under gcc I would
> implement 5 using these tools and see how it fares.  Also worth trying
> would be to run the test on MacOS using the FixMul routine provided in the
> std libs which is presumably fairly carefully optimised as it is used
> lots in the quickdraw routines.
>
> It's of course questionable whether there is much point in spending any
> more time on this.
>