On Fri, 13 May 2022, 19:13 Foelsche, Peter, <Peter_Foelsche@xxxxxxxxxx> wrote: > I'm the author of some software which dumps out C++ code to be compiled > with g++. > This code sometimes contains many different and many long tuples. I > deduced that long tuples cause rather long compile times. > I already wrote some compression, which collects identical entries in such > a tuple and moves them into an array. > But this compression reduces (run-time) performance. > I already wrote different tuple implementations, and one of the compiles > much faster than the regular provided std::tuple. > What could be the criterium for such a tuple implementation, which makes > g++ take more or less compile time assuming the same code using this tuple? > Identical object layout on all targets, meaning size, alignment, base-class order, etc. It needs to be ABI-compatible.
