[Bug other/90257] [9/10 Regression] 8% degradation on cpu2006 403.gcc starting with r270484

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90257

--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I committed as r270601, on gcc-9-branch

2019-04-26  Segher Boessenkool  <seg...@kernel.crashing.org>

        PR other/90257
        Revert the revert:
        2019-04-21  H.J. Lu  <hongjiu...@intel.com>

        PR target/90178
        Revert:
        2018-11-21  Uros Bizjak  <ubiz...@gmail.com>

        Revert the revert:
        2013-10-26  Vladimir Makarov  <vmaka...@redhat.com>

        Revert:
        2013-10-25  Vladimir Makarov  <vmaka...@redhat.com>

        * lra-spills.c (lra_final_code_change): Remove useless move insns.


so this is okay for rs6000 on GCC 9 for now.