https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80367
--- Comment #4 from jwjagersma at gmail dot com --- I fixed my code by changing the first two asm inputs to memory operands (should've done that anyway since I'm potentially modifying ds, so that could have caused issues at runtime). No longer triggers an ICE now, but still I don't think that should've happened in the first place with "rm" constraints. I'm guessing it ran out of registers maybe? But then that should've caused an "impossible constraints" error instead.
