Loop Unroll

[Francis Girard]

Thank you very much! I'll try that and keep you posted on this.

Francis

2011/5/5 Alexander Monakov <amonakov@ispras.ru>:
>
>
> On Thu, 5 May 2011, Francis Girard wrote:
>
>> How may we _easily_ know whether the compiler did indeed unroll a loop
>> or not in C/C++ ?
>
> In case of GCC, you can add -fdump-rtl-loop2_unroll-slim  to compiler command
> line and examine the resulting dump file (look for ";; Unrolled loop"),
> although there is no easy way to tell to which loop the compiler is referring
> to.  It is still usable in case there is only one loop in the function you're
> interested in.
>
> Alexander
>