https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119142
--- Comment #1 from Richard Sandiford <rsandifo at gcc dot gnu.org> --- Sorry, I thought Honza had regression-tested it on x86, but I realise now that I didn't confirm whether he had. I reverted the patch in r15-7862-g2c6ab4c443ae3278.