https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55549
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> --- Three things: 1) It was invalid *before* this, already (vector mode paradoxical subregs make no sense); 2) The subreg needs to be fixed up *somehow*, too; 3) subreg of mem will go away any day now (or, I keep telling myself that).
