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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/115247] experimental/simd/pr109261_constexpr_simd.cc
 FAILs on 32-bit x86
Date: Tue, 11 Jun 2024 09:51:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115247

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Matthias Kretz
<mkretz@gcc.gnu.org>:

https://gcc.gnu.org/g:0efc27068e59cac6bd80ff962e92618a037bbfe8

commit r13-8840-g0efc27068e59cac6bd80ff962e92618a037bbfe8
Author: Matthias Kretz <m.kretz@gsi.de>
Date:   Wed May 15 11:02:22 2024 +0200

    libstdc++: Avoid MMX return types from __builtin_shufflevector

    This resolves a regression on i686 that was introduced with
    r15-429-gfb1649f8b4ad50.

    Signed-off-by: Matthias Kretz <m.kretz@gsi.de>

    libstdc++-v3/ChangeLog:

            PR libstdc++/115247
            * include/experimental/bits/simd.h (__as_vector): Don't use
            vector_size(8) on __i386__.
            (__vec_shuffle): Never return MMX vectors, widen to 16 bytes
            instead.
            (concat): Fix padding calculation to pick up widening logic from
            __as_vector.

    (cherry picked from commit 241a6cc88d866fb36bd35ddb3edb659453d6322e)=