Doug Gregor wrote:
On Fri, Jul 23, 2010 at 11:14 AM, Thomas Heller <thom.heller@googlemail.com> wrote:
Mathias Gaunard wrote:
On 23/07/10 14:18, Thomas Heller wrote:
Ladies and Gentlemen, I proudly announce that the port of phoenix3 is completed! All testcases pass! (some with minor modifications)
So, What is next? Here is my proposed schedule: - fix some minor issues - improve boost.bind compatibility: make all boost.bind testcases pass - implement all boost.lambda testcases and make them pass, as far as it is reasonable - add support for C++0x lambdas - make interoperability testcases for std::function, boost::function - adapt the documentation - clean up code (some parts are a little messy as of now) - improve compile time
Did I miss something?
I would quite like to know how Phoenix 3 compares to Phoenix 2 in terms of compile speed, even if you haven't fully optimized it yet.
Let me give you a small example of what situation we currently have:
For this test i used the core/primitives_test.cpp test and g++ 4.5
Phoenix3 total compile time: 3.421s Phoenix3 preprocess time: 1.755s Phoenix3 compile time of preprocessed code: 1.835s
Phoenix2 total compile time: 1.891s Phoenix2 preprocess time: 0.745s Phoenix2 compile time of preprocessed code: 1.106s
comparing with clang:
Phoenix3 total compile time: 3.901s Phoenix3 preprocess time: 2.738s
Ouch! The Clang guys will be looking into this preprocessor-performance issue to see if we can do better. Thanks for reporting this!
- Doug
Thanks for looking into this! FYI, I was able to identify one bottleneck for the preprocessor. It was by including boost/fusion/include/vector.hpp. I instead included the different boost/fusion/container/vector/vectorN.hpp and was able to reduce compile-time by one second. New timings for the above test are: thomas@sunshine ~/programming/boost $ compile-time g++ -I. libs/phoenix/test/core/primitives_tests.cpp complete compile time: real 0m2.385s user 0m2.253s sys 0m0.120s preprocessing time: real 0m1.254s user 0m1.230s sys 0m0.017s compile time without preprocessing: real 0m1.234s user 0m1.157s sys 0m0.067s thomas@sunshine ~/programming/boost $ compile-time clang++ -I. libs/phoenix/test/core/primitives_tests.cpp complete compile time: real 0m2.709s user 0m2.337s sys 0m0.340s preprocessing time: real 0m1.765s user 0m1.417s sys 0m0.337s compile time without preprocessing: real 0m1.011s user 0m0.913s sys 0m0.080s