https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91213

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |NEW
         Resolution|FIXED                       |---

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
trunk GCC riscv:
  li a5,31
  subw a0,a5,a0

vs trunk clang riscv:
        xori    a0, a0, 31
        ret


(In reply to Robin Dapp from comment #8)
> Hacked something together, inspired by the other cases that try two
> different sequences.  Does this go into the right direction?  Works for me
> on s390. I see some regressions related to predictive commoning that I will
> look into.

The only different to this patch is now you can use the ranger instead to get
the tree_nonzero_bits to get more information.

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