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Re: [Patch] Splitting memory references during unrolling (resubmission)
- From: Revital Eres <ERES at il dot ibm dot com>
- To: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 2 Sep 2004 09:23:58 +0300
- Subject: Re: [Patch] Splitting memory references during unrolling (resubmission)
>
> could you please measure the effect of this patch on some benchmark
> on i686 and post results to the mailing list?
>
> I suspect this optimization might spoil the code there; if this
> turned out to be the case, you would have to restrict it to work
> only on architectures where it is profitable.
>
> Zdenek
I could not find any significant performance differences while running
the SPEC benchmarks on the patch and mainline with -O3 and funroll-loops
flags (on i686).
I can add a new flag to enable this optimization if you still have
concerns
about it's effect.
Revital