On Fri, Jun 15, 2012 at 12:54 AM, Walter Landry <wlan...@caltech.edu> wrote: > Hello Everyone, > > I thought you might be interested in some C++ expression template > benchmarks I have done. > > http://www.wlandry.net/Projects/FTensor#Benchmarks > > I found that GCC optimized the expression template code better than > unrolling expressions by hand. In fact, GCC was far, far better at > optimizing code with expression templates than any other compiler. I > ran the same benchmarks back in 2003, and GCC has improved quite a lot > since then.
Heh, yeah - quite possibly because I myself was working with a POOMA based CFD code during my PhD which made me start working on inproving GCC for expression template code ;) It is btw interesting to try to enable profile-feedback for the compilers - for some compilers you'll see that the profile-generating executables are so slow as to be unusable (as they seem to keep all calls of the expression templates). Thanks, Richard. > > Cheers, > Walter Landry > wlan...@caltech.edu
