[Bug target/128440] [14/15/16/17 Regression] BPF incorrectly expands backwards memmove

[mateuszb at poczta dot onet.pl via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128440

--- Comment #12 from mateuszb at poczta dot onet.pl ---
In normal memmove now it is:
      if (remainder & 2)
                {
                  emit_insn (gen_rtx_SET (adjust_address (dst, HImode, offset),
                                          adjust_address (src, HImode,
offset)));
                  offset += 4;

which should be fixed (+= 2).