From: Jonathan Wakely <jwakely@redhat.com>
To: Matthias Kretz <m.kretz@gsi.de>
Cc: gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org
Subject: Re: [PATCH 4/8] libstdc++: Add missing constexpr on simd shift implementation
Date: Thu, 23 Feb 2023 11:07:11 +0000 [thread overview]
Message-ID: <CACb0b4=OBTx80+5ohgDso_rZWiSwwQ2XBY6NeaqNJEqKOc-xrw@mail.gmail.com> (raw)
In-Reply-To: <2550642.Lt9SDvczpP@minbar>
On Thu, 23 Feb 2023 at 08:55, Matthias Kretz via Libstdc++
<libstdc++@gcc.gnu.org> wrote:
>
>
>
> Resolves -Wtautological-compare warnings about `if
> (__builtin_is_constant_evaluated())` in the implementations of these
> functions.
The 'inline' is redundant now, because these are unconditionally
constexpr which implies inline.
OK for all branches, with or without removing the 'inline'.
>
> Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
>
> libstdc++-v3/ChangeLog:
>
> * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
> (_S_bit_shift_right): Declare constexpr. The implementation was
> already expecting constexpr evaluation.
> ---
> libstdc++-v3/include/experimental/bits/simd_x86.h | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
>
> --
> ──────────────────────────────────────────────────────────────────────────
> Dr. Matthias Kretz https://mattkretz.github.io
> GSI Helmholtz Centre for Heavy Ion Research https://gsi.de
> stdₓ::simd
> ──────────────────────────────────────────────────────────────────────────
next prev parent reply other threads:[~2023-02-23 11:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-23 8:48 [PATCH 0/8] std::experimental::simd patchset Matthias Kretz
2023-02-23 8:49 ` [PATCH 1/8] libstdc++: Simplify three helper functions into one Matthias Kretz
2023-02-23 11:05 ` Jonathan Wakely
2023-02-23 8:49 ` [PATCH 2/8] libstdc++: Fix simd build failure on clang Matthias Kretz
2023-02-23 11:06 ` Jonathan Wakely
2023-02-23 8:49 ` [PATCH 3/8] libstdc++: More efficient masked inc-/decrement implementation Matthias Kretz
2023-02-24 17:12 ` Jonathan Wakely
2023-02-23 8:49 ` [PATCH 4/8] libstdc++: Add missing constexpr on simd shift implementation Matthias Kretz
2023-02-23 11:07 ` Jonathan Wakely [this message]
2023-02-23 11:33 ` Matthias Kretz
2023-02-23 8:49 ` [PATCH 5/8] libstdc++: Always-inline most of non-cmath fixed_size implementation Matthias Kretz
2023-02-24 17:10 ` Jonathan Wakely
2023-02-23 8:50 ` [PATCH 6/8] libstdc++: Fix formatting Matthias Kretz
2023-02-24 17:14 ` Jonathan Wakely
2023-02-24 18:44 ` Matthias Kretz
2023-02-23 8:50 ` [PATCH 7/8] libstdc++: Fix -Wsign-compare issue Matthias Kretz
2023-02-23 11:07 ` Jonathan Wakely
2023-02-23 8:50 ` [PATCH 8/8] libstdc++: Test that integral simd reductions are precise Matthias Kretz
2023-02-23 11:08 ` Jonathan Wakely
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