C Compiler benchmark: gcc 4.6.3 vs. Intel v11 and others

[willus.com]

On 1/18/2012 10:37 PM, Marc Glisse wrote:
> On Wed, 18 Jan 2012, willus.com wrote:
>
>> For those who might be interested, I've recently benchmarked gcc 
>> 4.6.3 (and 3.4.2) vs. Intel v11 and Microsoft (in Windows 7) here:
>>
>> http://willus.com/ccomp_benchmark2.shtml
>
> http://en.wikipedia.org/wiki/Microsoft_Windows_SDK#64-bit_development
>
> For the math functions, this is normally more a libc feature, so you 
> might get very different results on different OS. Then again, by using 
> -ffast-math, you allow the math functions to return any random value, 
> so I can think of ways to make it even faster ;-)
>
I use -ffast-math all the time and have always gotten virtually 
identical results to when I turn it off.  The speed difference is 
important for me.