To be fair it is possible that the developer enabled a special "unroll all loops, no matter what" optimisation flag during compilation.
I agree it would be stupid for a compiler to even support such a flag, but those were the 1980s/90s.
To be fair it is possible that the developer enabled a special "unroll all loops, no matter what" optimisation flag during compilation.
I agree it would be stupid for a compiler to even support such a flag, but those were the 1980s/90s.
Doesn't require any special flags, just hitting optimizer limits can do it with MSVC.
https://www.reddit.com/r/cpp/comments/1i36ahd/is_this_an_msv...
Ahh... Good old funrollloops...
https://www.shlomifish.org/humour/by-others/funroll-loops/Ge...
Heh, "funrollloops" reminds me of recompiling FreeBSD 4 on my thinkpad back in the early aughts. The word made me imagine some sort of processed breakfast cereal with too many additives.
Right up there with fun, safe math optimizations
At least these actually make things faster usually.