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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/105936] [10 Regression] ICE with inline-asm
 and TLS on x86_64 and -O2 in move_insn
Date: Sun, 12 Jun 2022 17:33:47 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105936

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|needs-reduction             |inline-asm
            Summary|[10 Regression] internal    |[10 Regression] ICE with
                   |compiler error: in          |inline-asm and TLS on
                   |move_insn, at               |x86_64 and -O2 in move_insn
                   |haifa-sched.c:5463          |

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
typedef struct {
    unsigned short offset;
    unsigned short segment;
} far_t;

extern __thread int vm86u[8];
int int33_hooked;
int is_revectored(void);
void log_printf(void);

far_t int33_unrevect(unsigned short gg)
{
    far_t ret =3D {};=20
    if (int33_hooked)
        return ret;
    if (is_revectored())
    {=20
        log_printf();
        __asm__ __volatile__(""   :   :"m" (vm86u[0]));
    }
    else=20
    {=20
        if (gg)
                log_printf();
    }=20
    ret.segment =3D 0x0f000;=20
    ret.offset =3D 0xf847;
    return ret;
}=