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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/102766] [12 Regression][nvptx] internal compiler
 error: in df_insn_delete, at df-scan.c:949
Date: Fri, 15 Oct 2021 09:17:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102766

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |12.0
                 CC|                            |vries at gcc dot gnu.org
            Summary|[12 Regression] internal    |[12 Regression][nvptx]
                   |compiler error: in          |internal compiler error: in
                   |df_insn_delete, at          |df_insn_delete, at
                   |df-scan.c:949               |df-scan.c:949

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Bisecting shows that the ICE is exposed due to the var-tracking changes:

commit g:4cb52980e5d5fb64a393d385923da1b51ab34606
Author: Martin Liska <mliska@suse.cz>
Date:   Tue Oct 12 14:31:50 2021 +0200

    Eliminate AUTODETECT_VALUE usage in options.

    gcc/ChangeLog:

        * common.opt: Stop using AUTODETECT_VALUE
        and use EnabledBy where possible.
        * opts.c: Enable OPT_fvar_tracking with optimize >=3D 1.
        * toplev.c (AUTODETECT_VALUE): Remove macro.
        (process_options): Simplify by using EnabledBy and
        OPT_fvar_tracking.  Use OPTION_SET_P macro instead of
        AUTODETECT_VALUE.=