https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114668
--- Comment #2 from Robin Dapp <rdapp at gcc dot gnu.org> --- This, again, seems to be a problem with bit extraction from masks. For some reason I didn't add the VLS modes to the corresponding vec_extract patterns. With those in place the problem is gone because we go through the expander which does the right thing. I'm still checking what exactly goes wrong without those as there is likely a latent bug.
