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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113921] Output register of an "asm volatile goto" is
 incorrectly clobbered/discarded
Date: Wed, 14 Feb 2024 18:00:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113921

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bisection points to r12-5301-g045206450386bcd774db3bde0c696828402361c6 maki=
ng
the problem go away,
    3abc:       b8 10 28 00 00          mov    $0x2810,%eax
    3ac1:       0f 78 c0                vmread %rax,%rax
    3ac4:       0f 86 1e 01 00 00       jbe    3be8
<sync_vmcs02_to_vmcs12+0x858>
    3aca:       45 31 e4                xor    %r12d,%r12d
    3acd:       4c 89 a3 f0 00 00 00    mov    %r12,0xf0(%rbx)
to
    3a4f:       b8 10 28 00 00          mov    $0x2810,%eax
    3a54:       0f 78 c0                vmread %rax,%rax
    3a57:       0f 86 1b 01 00 00       jbe    3b78
<sync_vmcs02_to_vmcs12+0x808>
    3a5d:       48 89 83 f0 00 00 00    mov    %rax,0xf0(%rbx)=