https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103438
--- Comment #7 from Nils Smeds <nils.smeds at gmail dot com> --- (In reply to Martin Liška from comment #6) > Lemme take a look. Great, thanks. What happens in real life inside the code is beyond me, I am mostly after that the documentation should describe what is really happening. If --help is not reflecting what is happening I think that is a bug that needs to be filed by someone smarter than I ;-) I still am happy to provide patches to the documentation once --help is known to reflect reality. I will stay tuned to see what enables the options -fprefetch-loop-arrays and -faggressive-loop-optimizations but it appears to be the target used and not the level of Optimization applied? Where should I look in the code to find this? If so, I will modify the docs accordingly: "Enabled by default on targets that support xxxx" (whatever xxxx may be).