https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106187
--- Comment #14 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> --- @Richard I've uploaded the generated *.ii files (-save-temps), as discussed with upstream: * https://github.com/google/highway/issues/776#issuecomment-1177864014 I do not know the codebase very well so I cannot provide much help other than "it fails the test suite on this single arch/opt flag"...