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Subject: [Bug debug/100852] [11/12 Regression] -fcompare-debug failure
 (length) with -Og -fif-conversion -fno-tree-ccp -fno-tree-copy-prop
Date: Thu, 10 Jun 2021 07:30:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100852

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:2d2ed777b23ab6503027039e0adbfe1162f52b2f

commit r12-1354-g2d2ed777b23ab6503027039e0adbfe1162f52b2f
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Jun 10 09:28:27 2021 +0200

    ifcvt: Fix -fcompare-debug bug [PR100852]

    The following testcase fails -fcompare-debug, because it is ifcvt optim=
ized
    into umin only with -g0 and not with -g - the function(s) use
    prev_nonnote_insn, which without -g finds a real insn the code is looki=
ng
    for, while with -g finds a DEBUG_INSN.

    2021-06-10  Jakub Jelinek  <jakub@redhat.com>

            PR debug/100852
            * ifcvt.c (noce_get_alt_condition, noce_try_abs): Use
            prev_nonnote_nondebug_insn instead of prev_nonnote_insn.

            * g++.dg/opt/pr100852.C: New test.=