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Subject: [Bug target/107025] gas doesn't accept code produced by
 -mcpu=thunderx3t110
Date: Thu, 29 Sep 2022 10:34:24 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107025

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Richard Sandiford <rsandifo@gcc.gnu.or=
g>:

https://gcc.gnu.org/g:0f244d848cffeda68f0eb4c5bb9c7e629bf2e957

commit r13-2940-g0f244d848cffeda68f0eb4c5bb9c7e629bf2e957
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Thu Sep 29 11:32:53 2022 +0100

    aarch64: Remove AARCH64_FL_RCPC8_4 [PR107025]

    AARCH64_FL_RCPC8_4 is an odd-one-out in that it has no associated
    entry in aarch64-option-extensions.def.  This means that, although
    it is internally separated from AARCH64_FL_V8_4A, there is no
    mechanism for turning it on and off individually, independently
    of armv8.4-a.

    The only place that the flag was used independently was in the
    entry for thunderx3t110, which enabled it alongside V8_3A.
    As noted in PR107025, this means that any use of the extension
    will fail to assemble.

    In the PR trail, Andrew suggested removing the core entry.
    That might be best long-term, but since the barrier for removing
    command-line options without a deprecation period is very high,
    this patch instead just drops the flag from the core entry.
    We'll still produce correct code.

    gcc/
            PR target/107025
            * config/aarch64/aarch64.h (oAARCH64_FL_RCPC8_4): Delete.
            (AARCH64_FL_FOR_V8_4A): Update accordingly.
            (AARCH64_ISA_RCPC8_4): Use AARCH64_FL_V8_4A directly.
            * config/aarch64/aarch64-cores.def (thunderx3t110): Remove
            AARCH64_FL_RCPC8_4.=