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Re: [tree-ssa] What would be interesting SPEC2000 tests flags?
- From: law at redhat dot com
- To: Steven Bosscher <s dot bosscher at student dot tudelft dot nl>
- Cc: gcc at gcc dot gnu dot org, Andreas Jaeger <aj at suse dot de>, dnovillo at redhat dot com
- Date: Sat, 31 May 2003 20:06:09 -0600
- Subject: Re: [tree-ssa] What would be interesting SPEC2000 tests flags?
- Reply-to: law at redhat dot com
In message <3ED8C64C.1060001@student.tudelft.nl>, Steven Bosscher writes:
>Hi,
>
>The other day I noticed that Andreas Jaeger's SPEC2k
>testers for the tree-ssa branch have been testing
>with BASE="-O2" and PEAK="-O2 -ftree-ccp" for some
>time now. But since tree-ccp has been enabled by
>default at -O1 already since February (?), BASE==PEAK.
>We would get more interesting results if we choose
>different flag settings for BASE and PEAK.
>
>I notified Andreas and he asked what flags he should
>use instead. So what would be interesting to compare
>for tree-ssa? Something like -O1 vs. -O2, or both -O2
>but one with a few RTL optimizers disabled? Or
>-fdisable-simple (IMVHO not very useful since Diego
>already tests that). Make some suggestions! :-)
The two I'm most interested in are the effects of SSAPRE and
PTA. I believe we have switches for both.
jeff