updated with optimizations -GCC
A small update with GCC-optimizations
Not too much did change when optimizations were used (I suppose there are default settings to start with). Surprisingly, -O2 often performed better than -O3. I am considering trying some LTO later.
Next up will however be similar analyses of optimization levels for ICC, Clang and other compilers that have such options.
After that I think I will move on to 32-bit benchmarks, where there are a number of other interesing compilers to test...