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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/94618] [8/9/10 Regression] '-fcompare-debug'
 failure (length) with -O2 -fnon-call-exceptions since
 r8-565-g7581ce9a1ad6df9c
Date: Fri, 17 Apr 2020 07:51:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94618

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Perhaps if we checked DEBUG_INSN_P on BB_END, we could then use
prev_nondebug_insn, so like:
  if (INSN_P (insn) && BLOCK_FOR_INSN (insn))
    {
      basic_block bb =3D BLOCK_FOR_INSN (insn);
      if (BB_END (bb) =3D=3D insn
          || (DEBUG_INSN_P (BB_END (bb))
              && prev_nondebug_insn (BB_END (bb)) =3D=3D insn))
        purge =3D true;
    }
?=