https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71094
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Sandra Loosemore <san...@gcc.gnu.org>: https://gcc.gnu.org/g:d91aab4dd6814ca54c211a93fec3f072745a52c4 commit r15-9502-gd91aab4dd6814ca54c211a93fec3f072745a52c4 Author: Sandra Loosemore <sloosem...@baylibre.com> Date: Tue Apr 15 18:37:37 2025 +0000 Docs: Address -fivopts, -O0, and -Q confusion [PR71094] There's a blurb at the top of the "Optimize Options" node telling people that most optimization options are completely disabled at -O0 and a similar blurb in the entry for -Og, but nothing at the entry for -O0. Since this is a continuing point of confusion it seems wise to duplicate the information in all the places users are likely to look for it. gcc/ChangeLog PR tree-optimization/71094 * doc/invoke.texi (Optimize Options): Document that -fivopts is enabled at -O1 and higher. Add blurb about -O0 causing GCC to completely ignore most optimization options.
