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Subject: [Bug target/111822] [12/13/14 Regression] during RTL pass:
 lr_shrinkage ICE: in operator[], at vec.h:910 with -O2 -m32
 -flive-range-shrinkage -fno-dce -fnon-call-exceptions since
 r12-5301-g045206450386bc
Date: Mon, 18 Mar 2024 19:41:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111822

--- Comment #19 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Uros Bizjak <uros@gcc.gnu.org>:

https://gcc.gnu.org/g:b96c5436880d7926299314a33c953171082ab59e

commit r14-9523-gb96c5436880d7926299314a33c953171082ab59e
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Mon Mar 18 20:40:29 2024 +0100

    i386: Unify {general,timode}_scalar_chain::convert_op [PR111822]

    Recent PR111822 fix implemented REG_EH_REGION note copying to a STV
converted
    preload instruction in general_scalar_chain::convert_op.  However, the =
same
    issue remains in timode_scalar_chain::convert_op.  Instead of copying t=
he
    newly introduced code to timode_scalar_chain::convert_op, the patch uni=
fies
    both functions to a common function.

            PR target/111822

    gcc/ChangeLog:

            * config/i386/i386-features.cc (smode_convert_cst): New function
            to handle SImode, DImode and TImode immediates, generalized from
            timode_convert_cst.
            (timode_convert_cst): Remove.
            (scalar_chain::convert_op): Unify from
            general_scalar_chain::convert_op and
timode_scalar_chain::convert_op.
            (general_scalar_chain::convert_op): Remove.
            (timode_scalar_chain::convert_op): Remove.
            (timode_scalar_chain::convert_insn): Update the call to
            renamed timode_convert_cst.
            * config/i386/i386-features.h (class scalar_chain):
            Redeclare convert_op as protected class member.
            (class general_calar_chain): Remove convert_op.
            (class timode_scalar_chain): Ditto.

    gcc/testsuite/ChangeLog:

            * g++.target/i386/pr111822.C (dg-do): Compile only for ia32
targets.
            (dg-options): Add -march=3Dx86-64.=