https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94461
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
As I said in PR90497, the PR79565/PR82483 changes made SSE{,2,3} | MMX in
i386-builtins.def mean that both the SSE* and MMX must be enabled, rather than
either one or the other. Now, with MMX_WITH_SSE, if the V2SI etc. modes are
also enabled, we can treat that as SSE* and (MMX or MMX_WITH_SSE), but
certainly shouldn't enable it if just MMX is enabled and SSE* is not.
Now, if there are any builtins that have been added or changed in the
MMX_WITH_SSE changeset that want something else (like either MMX or SSE*), then
we'll need a different representation.
