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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/108193] [13 Regression] ICE in do_SUBST, at
 combine.cc:700
Date: Fri, 10 Feb 2023 17:44:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108193

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:cb8022eab6d076325495360da632321078326135

commit r12-9132-gcb8022eab6d076325495360da632321078326135
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Dec 22 12:44:13 2022 +0100

    cse: Fix up CSE const_anchor handling [PR108193]

    The following testcase ICEs on aarch64, because insert_const_anchor
    inserts invalid CONST_INT into the CSE tables - 0x80000000 for SImode.
    The second hunk of the patch fixes that, the first one is to avoid
    triggering undefined behavior at compile time during compute_const_anch=
ors
    computations - performing those additions and subtractions in
    HOST_WIDE_INT means it can overflow for certain constants.

    2022-12-22  Jakub Jelinek  <jakub@redhat.com>

            PR rtl-optimization/108193
            * cse.cc (compute_const_anchors): Change n type to
            unsigned HOST_WIDE_INT, adjust comparison against it to avoid
            warnings.  Formatting fix.
            (insert_const_anchor): Use gen_int_mode instead of GEN_INT.

            * gfortran.dg/pr108193.f90: New test.

    (cherry picked from commit 0cb5d7cdbab8e5f8359764ef5f62d93c2bc88552)=