[Bug c++/71741] The program works 3 times slower compiled with g++ 5.3.1 than the same program compiled with g++ 4.8.4 with the same command (i7-5820 Haswell)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71741 --- Comment #2 from Alex --- At attachment There is no all sources of my program, you can find it here: https://github.com/mediev/inclined_well/tree/gcc_bug But, instead of my program, I ask you to try reproduce the simple example of code here:

[Bug c++/71741] New: The program works 3 times slower compiled with g++ 5.3.1 than the same program compiled with g++ 4.8.4 with the same command (i7-5820 Haswell)

) Product: gcc Version: 5.3.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: cranon at yandex dot ru Target Milestone: --- Created attachment 38821 --> ht