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Re: Compilation performance comparison of 3.5.0 and TreeSSA trees on MICO sources as requested in: [tree-ssa] Merge status 2004-05-03
- From: dewar at gnat dot com (Robert Dewar)
- To: Joe dot Buck at synopsys dot COM, laurent at guerby dot net
- Cc: dewar at gnat dot com, dnovillo at redhat dot com, gcc at gcc dot gnu dot org,kenner at vlsi1 dot ultra dot nyu dot edu
- Date: Wed, 5 May 2004 14:56:26 -0400 (EDT)
- Subject: Re: Compilation performance comparison of 3.5.0 and TreeSSA trees on MICO sources as requested in: [tree-ssa] Merge status 2004-05-03
> The purpose of doing some optimization is to make -O0 *faster*. We've
> already got a 20% speed degradation any you want to allow 5% *more*?
No, that's not the only purpose, especially if there is a spearate option,
it would be VERY helpful to have -Og if it substantially reduces size
of executables, which is a major problem area.