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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 target/107061] ENCODEKEY128 clobbers xmm4-xmm6
Date: Thu, 29 Sep 2022 18:32:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107061

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:f1454a75c9a165c0ba30833f23f799044fd7a7fe

commit r12-8795-gf1454a75c9a165c0ba30833f23f799044fd7a7fe
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Sep 27 16:19:11 2022 -0700

    i386: Mark XMM4-XMM6 as clobbered by encodekey128/encodekey256

    encodekey128 and encodekey256 operations clear XMM4-XMM6.  But it is
    documented that XMM4-XMM6 are reserved for future usages and software
    should not rely upon them being zeroed.  Change encodekey128 and
    encodekey256 to clobber XMM4-XMM6.

    gcc/

            PR target/107061
            * config/i386/predicates.md (encodekey128_operation): Check
            XMM4-XMM6 as clobbered.
            (encodekey256_operation): Likewise.
            * config/i386/sse.md (encodekey128u32): Clobber XMM4-XMM6.
            (encodekey256u32): Likewise.

    gcc/testsuite/

            PR target/107061
            * gcc.target/i386/keylocker-encodekey128.c: Don't check
            XMM4-XMM6.
            * gcc.target/i386/keylocker-encodekey256.c: Likewise.

    (cherry picked from commit db288230db55dc1ff626f46c708b555847013a41)=