[Bug middle-end/114733] [14] Miscompile with -march=rv64gcv -O3 on riscv

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114733

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
  <bb 2> [local count: 9582068]:
  b_lsm.9_16 = b;
  _20 = -b_lsm.9_16;
  b = _20;
  __builtin_printf ("%ld\n", _20);
  return 0;

we unroll the inner loop and then vectorize with 8 byte vectors which
means exposing V1DImode vectors which I think runs into the very same
issue (VF is "even").