Re: [OT] compiler optimisations

[deadalnix via Digitalmars-d]

On Thursday, 23 April 2015 at 10:23:57 UTC, Andrea Fontana wrote:

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.

That is cool ! However, careful, division can stall the pipeline.