[cfe-dev] GCC 4.6, LLVM/Clang 2.9, DragonEgg Five-System Benchmarks

[Eric Christopher]

On Mar 30, 2011, at 11:04 AM, C. Bergström wrote:

> Eric Christopher wrote:
>> On Mar 30, 2011, at 10:11 AM, Evan Cheng wrote:
>> 
>>  
>>> Himeno is built -O0, which makes zero sense as a performance benchmark. And you are right GraphicsMagick uses OpenMP, which means the comparison between Clang and the rest of the compilers are totally meaningless. 7-Zip builds just fine for me with Clang, I have no idea why they couldn't get it to build.
>>> 
>>> I think it's worthwhile to relay these information and hopefully they will correct these mistakes. But color me skeptical.
>>>    
>> 
>> I sent him email and received not much in the way of a hopeful response.
>>  
> phoronix is an ad machine and solely strives to make the graphs more interesting....  I've added Michael on cc and who has always corrected blatant errata for me in the past.
> 

I've talked with Michael over email. He was very polite, I just don't know if anything was going to be mentioned or changed.

> With regard to OpenMP -  Did it say if the -omp flags were used?  If not then I don't think gcc automatically turns it on.
> 

It should be on for an openmp enabled GraphicsMagick by default if it detects you are gcc. I should think at least.

-eric