https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59874
--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Allan Jensen from comment #5) > This is more problematic to fix in Qt itself. How can we determine if we > should/can use __builtin_clzs or __lzcnt16? > > Note the former is practically standard being supported by both older gcc > and clang. There is also the problem that we need to call a builtin, because > the C-intrinsics don't work as constexpr. Well, if the change makes so much pain, let's put these intrinsics back.
