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Re: Loop unrolling-related SPEC regressions?


Joe Buck <jbuck@synopsys.COM> writes:

>> 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.
>
> It's not clear to me that -funroll-all-loops is the correct setting for
> PEAK, as bloating out the code may make the cache perform worse.

I know it's not the best setting but I'm not going for the best
numbers but for consistency - and like to test different areas of the
compiler.

Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj


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