Loop unrolling-related SPEC regressions?

[Paolo Carlini]

Richard Henderson wrote:

> > browsing the latest results from Andreas, it looks like a few of them (e.g.,
> > 164.gzip, 186.crafty, 200.sixtrack) are showing a definite regression in the
> > PEAK case, characterized by -funroll-all-loops. May it be related to the
> > recent:
>
> Possibly.  If someone debugs this and finds a test case for which loop
> unrolling fails where it succeeded before, I'll look at it.

Thanks for your prompt reply. The problem is, all of SPEC is not publicly
available :-( Only Andreas may try to heavily distil a testcase from the original
codes...

Otherwise, we should find one somewhere else. Where??

>  I can't
> promise to fix it though, since the fix may break the original test case.

I see.

Cheers,
P.