Hi,

Thorsten Froehlich wrote:
> Francois LE COAT wrote:
> 
>> Well, as you are speaking about IBM, it seems that XLC (the IBM
>> compiler) can just be put in place of GCC using Xcode and produce
>> the best code for PPC. I can't find any information about that ...
> 
> It is not about the compiler, but the executable format.  IBM had to 
> port their compiler to the flawed Mach-O, so it does not solve any of 
> the problems.

Well, you're speaking of another platform (AIX eventually).
I personally used XLC for benchmarking, comparing dual-G4 and
dual-G5, with standalone IBM compiler and GCC (Xcode 1.5).

Time (in seconds) for computing 100 images :

dua### [at] 125GHz : GCC (3.3) 104 s. - XLC (6.0) 85 s.
dua### [at] 25GHz  : GCC (3.3) 60  s. - XLC (6.0) 48 s.

and parallel code for image processing (matching mainly integers).

I know that Apple let XLC replace the GCC compiler of Xcode
to produce a better code. Have you heard about that ?

Best regards,


Author of Eureka 2.12 (2D Graph Describer, 3D Modeller)
http://eureka.atari.org

Post a reply to this message