[LLVMdev] The performance of LLVM vs GCC

[Chris Lattner]

On Nov 3, 2011, at 3:27 AM, Duncan Sands wrote:

> On 11/03/11 10:11, Rotem, Nadav wrote:
>> And this one, with LLVM ~3.0:
>> 
>> http://www.phoronix.com/scan.php?page=article&item=amd_bulldozer_compilers&num=1
> 
> What, no dragonegg?! :)

It is worth pointing out that the methodology of Phoronix makes their results basically useless.  They willfully test -O0 codegen against different compilers, don't mention when a test is using OpenMP or not, and (in this case) are testing on a micro architecture that only one of the compilers is tuned for.

YMMV, but I consider their results to be complete garbage. It's nice to see Clang beating the pants off GCC in some tests though ;-)

-Chris