[Bug target/79905] ICE in canonical types differ for identical types __vector(4) int and V4i {aka __vector(4) int}

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79905

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
The frontend should have assigned the same TYPE_CANONICAL here.  I don't know
much about the vector keyword magic we have on ppc.