https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65693
--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> --- I see GCC not trying to throw away the useless arm of the parallel, just as comment 7 mentions. I wonder why that is, investigating. This isn't the root cause; it is just exposing a problem in the RA :-(
