[OT] compiler optimisations

[Andrea Fontana via Digitalmars-d]

On Thursday, 23 April 2015 at 10:08:24 UTC, John Colvin wrote:
>> asm.dlang.org
>
> and d.godbolt.org
>
> This isn't a D-specific question though, so gcc.godbolt.org 
> would allow you to test a wider range of backends.

I was wondering if compilers can optimize this:

uint foo3(uint a)
{
   return a*!(a/5);
}

That actually gives the same results.