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Re: Compilation performance comparison of gcc3.4.1 and gcc3.5.0 2004-08-30 on MICO sources


3.4.1 seems to have a problem with the expander at -O2:

expand : 8.79 (26%) usr 0.01 ( 0%) sys 8.90 (24%) wall

So this 3.4.1 bug is somehow work around by gimplification and tree optimization, and this masks the 40% difference (which would still be there at -O2 if it weren't for the improvement in expander time).


Paolo


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