GMP 6.0.0a on AMD A8-6600K

[Niels Möller]

Kevin Buckley <kevin.m.buckley at gmail.com> writes:

> Program received signal SIGILL, Illegal instruction.
> 0x000000000040214f in check_onebit () at t-get_d.c:86
> 86            np[bit/GMP_NUMB_BITS] = CNST_LIMB(1) << (bit % GMP_NUMB_BITS);
>
> (gdb) p $pc
> $1 = (void (*)()) 0x40214f <check_onebit+79>

> => 0x000000000040214f <+79>:    vmovsd 0x9031(%rip),%xmm2        # 0x40b188

So this is in code generated by gcc. I have no idea what the vmovsd
does, or which instruction set extension it belongs to. Hopefully
someone else does.

In the mean time, you could try playing with the command line options to
gcc and see if you can stop it from generating this instruction.

Regards,
/Niels

-- 
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.