On Wed, 24 May 2023 at 16:06, Matthias Kretz via Libstdc++ <
libstdc++@gcc.gnu.org> wrote:

> OK for master and backports? (also a long-standing bug that didn't surface
> until the new constexpr test was added)
>

OK for all


>
> tested on powerpc64le-linux-gnu
>
> ------------- 8< -----------------
>
> Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
>
> libstdc++-v3/ChangeLog:
>
>         PR libstdc++/109949
>         * include/experimental/bits/simd.h (__intrinsic_type): If
>         __ALTIVEC__ is defined, map gnu::vector_size types to their
>         corresponding __vector T types without losing unsignedness of
>         integer types. Also prefer long long over long.
>         * include/experimental/bits/simd_ppc.h (_S_popcount): Cast mask
>         object to the expected unsigned vector type.
> ---
>  libstdc++-v3/include/experimental/bits/simd.h | 39 ++++++++++++++++---
>  .../include/experimental/bits/simd_ppc.h      |  3 +-
>  2 files changed, 36 insertions(+), 6 deletions(-)
>
>
> --
> ──────────────────────────────────────────────────────────────────────────
>  Dr. Matthias Kretz                           https://mattkretz.github.io
>  GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
>  stdₓ::simd
> ──────────────────────────────────────────────────────────────────────────