[Bug rtl-optimization/90257] [10 Regression] 8% degradation on cpu2006 403.gcc starting with r270484

[jakub at gcc dot gnu.org]

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

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Apr 29 14:18:55 2019
New Revision: 270653

URL: https://gcc.gnu.org/viewcvs?rev=270653&root=gcc&view=rev
Log:
        PR rtl-optimization/90257
        * cfgrtl.c (flow_active_insn_p): Return true for USE of a function
        return value.

        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.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgrtl.c
    trunk/gcc/lra-spills.c