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Re: GCC 4.2.0 Status Report (2007-02-19)


I am agree, benchmarking is evil. My favorite benchmark is gcc because it is my tool and I work on it. Compilation of gcc from Spec2000 is >12% slower with df including last Paolo's patches (which are a really big improvement).

Interesting enough, 176.gcc has a pretty bad result for runtime too in SPEC2000:

176.gcc          1100      67.8      1622      1100      72.9      1509*
176.gcc          1100      68.1      1614*     1100      72.9      1509
176.gcc          1100      68.8      1600      1100      72.6      1515


By your reasoning, there is some probability that fixing this one performance regression brings dataflow branch into shape for merging into mainline... (even though so much has changed since 2.7.2 which is used in SPEC2000).

Paolo

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