https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69447
Richard Henderson <rth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED --- Comment #8 from Richard Henderson <rth at gcc dot gnu.org> --- Further archaeology suggests that PR 66424 is related, and had an incomplete fix applied. The fix for PR 66424 prevents an insn being moved if it contains a subreg of a multi-word pseudo. But the same problem exists if one moves a complete multi-word pseudo if any of its subregs have ever been accessed.