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Re: Massive performance regression from switching to gcc 4.5


Jan Hubicka wrote:
On Fri, 25 Jun 2010, it was written:
There sure is something in 4.5. I've seen a 1-10% slowdown at the GiNaC
(a computer algebra library) benchmark suite after switching from 4.4 to
4.5 on x86_64 when compiling with -O2. And there hasn't been a measurable
performance differences between 4.3 and 4.4.

FP intensive code could be also affected by:

This code isn't using floating-point.


  -richy.
--
Richard B. Kreckel
<http://www.ginac.de/~kreckel/>


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