[Bug target/127841] m68k: subdi_dishl32 emits memory-to-memory sub.l

[bernie at codewiz dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127841

--- Comment #3 from Bernie Innocenti <bernie at codewiz dot org> ---
It also needs -m68060 with upstream m68k-elf-gcc 16.1:

  https://godbolt.org/z/1nzK1vv46

I can repro all the way back to gcc 13.