https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62056
--- Comment #9 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- (In reply to Agustín Bergé from comment #8) > Please let me know if I can help you in any other way. Thanks for the detailed explanation. As for the g++ issue, then a minimal testcase that does not include the whole of <tuple> might be useful to see what could be speed up: See https://gcc.gnu.org/bugs/minimize.html The testcase itself might generate code programmatically using macros, for example, but less code without any headers is easier to analyze. I cannot say if the libstdc++ implementation could be better, but the way to prove it is simply to submit a new implementation and convince the maintainers that it is better with numbers. I'm sure they will be delighted to receive such contribution. But a draft is not enough. The new implementation needs to pass all testcases in the testsuite.
