Scheduling complete loop unrolling early and unconditional?

[Richard Guenther]

On Thu, 16 Dec 2004, Richard Guenther wrote:

> Hi!
>
> I seem to get significant better code by exchanging code like
>
>  for (int i=0; i<4; ++i)
>    a[i] = b[i] + c[i];
>
> with a template meta-program.  This seems to be because SRA
> cannot scalarize the arrays if they are accessed in a loop.

Possibly related to PR18754.