[Bug c++/80859] Performance Problems with OpenMP 4.5 support

[thorstenkurth at me dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80859

--- Comment #11 from Thorsten Kurth <thorstenkurth at me dot com> ---
Hello Jakub,

yes, you are right. I thought that map(tofrom:XXXX) is the default mapping but
I might be wrong. In any case, teams is always 1. So this code is basically
just data streaming  so there is no need for a detailed performance analysis.
When I timed the code (not profiling it) the OpenMP 4.5 code had a tiny bit
more overhead, but not significant. 
However, we might nevertheless learn from that. 

Best
Thorsten