https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #5 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to prathamesh3492 from comment #4)
> Hi,
> It seems to work on my machine for x86_64.
> Compiling with -O3 (or -O2),
> .optimized dump shows:
>
> v4si foo (v4si b, v4si a)
> {
> v4si c;
> vector(4) <signed-boolean:32> _1;
>
> <bb 2> [local count: 1073741824]:
> _1 = a_2(D) == b_3(D);
> c_4 = VIEW_CONVERT_EXPR<v4si>(_1);
> return c_4;
>
> }
>
> I tried on top of af362af18f405c34840d820143aa3a94f72fce4d.
>
> Btw, on ARM it seems to "scalarize" the code,
> .optimized dump shows:
>
> _6 = BIT_FIELD_REF <a_2(D), 32, 0>;
> _7 = BIT_FIELD_REF <b_3(D), 32, 0>;
> _8 = _6 == _7 ? -1 : 0;
> _9 = BIT_FIELD_REF <a_2(D), 32, 32>;
> _10 = BIT_FIELD_REF <b_3(D), 32, 32>;
> _11 = _9 == _10 ? -1 : 0;
> _12 = BIT_FIELD_REF <a_2(D), 32, 64>;
> _13 = BIT_FIELD_REF <b_3(D), 32, 64>;
> _14 = _12 == _13 ? -1 : 0;
> _15 = BIT_FIELD_REF <a_2(D), 32, 96>;
> _16 = BIT_FIELD_REF <b_3(D), 32, 96>;
> _17 = _15 == _16 ? -1 : 0;
> c_4 = {_8, _11, _14, _17};
> return c_4;
>
> Thanks,
> Prathamesh
try -march=skylake-avx512(In reply to prathamesh3492 from comment #4)
> Hi,
> It seems to work on my machine for x86_64.
> Compiling with -O3 (or -O2),
> .optimized dump shows:
>
> v4si foo (v4si b, v4si a)
> {
> v4si c;
> vector(4) <signed-boolean:32> _1;
>
> <bb 2> [local count: 1073741824]:
> _1 = a_2(D) == b_3(D);
> c_4 = VIEW_CONVERT_EXPR<v4si>(_1);
> return c_4;
>
> }
>
> I tried on top of af362af18f405c34840d820143aa3a94f72fce4d.
>
> Btw, on ARM it seems to "scalarize" the code,
> .optimized dump shows:
>
> _6 = BIT_FIELD_REF <a_2(D), 32, 0>;
> _7 = BIT_FIELD_REF <b_3(D), 32, 0>;
> _8 = _6 == _7 ? -1 : 0;
> _9 = BIT_FIELD_REF <a_2(D), 32, 32>;
> _10 = BIT_FIELD_REF <b_3(D), 32, 32>;
> _11 = _9 == _10 ? -1 : 0;
> _12 = BIT_FIELD_REF <a_2(D), 32, 64>;
> _13 = BIT_FIELD_REF <b_3(D), 32, 64>;
> _14 = _12 == _13 ? -1 : 0;
> _15 = BIT_FIELD_REF <a_2(D), 32, 96>;
> _16 = BIT_FIELD_REF <b_3(D), 32, 96>;
> _17 = _15 == _16 ? -1 : 0;
> c_4 = {_8, _11, _14, _17};
> return c_4;
>
> Thanks,
> Prathamesh
It need avx512, try -march=skylake-avx512
