https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121007
--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> --- Hrm, the insn here is just a mulldi instruction, a bog-standard integer multiplication (by a constant, 6 here). But insn 58 (where the problems start, "Changing address in insn 58 r218:DI&0xfffffffffffffff0 on equiv sfp:DI+0x20&0xfffffffffffffff0") is a VMX memory access indeed (so with &-16 in it).