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From: "monad at posteo dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/104665] Failure to recognize memcpy
Date: Wed, 23 Feb 2022 16:55:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104665

--- Comment #2 from monad at posteo dot net ---
The full code including headers is:

#include <cstddef>
#include <cstdint>
#include <cstring>


void serialize_le(std::byte* __restrict dst, const std::uint32_t* __restrict
src)
{
    for (int i =3D 0; i < 32; ++i, ++src)
    {
        *dst++ =3D static_cast<std::byte>((*src >> 24) & 0xff);
        *dst++ =3D static_cast<std::byte>((*src >> 16) & 0xff);
        *dst++ =3D static_cast<std::byte>((*src >>  8) & 0xff);
        *dst++ =3D static_cast<std::byte>((*src >>  0) & 0xff);
    }
}=