Re: [PATCH] Optimize json_lex_string by batching character copying

On Tue, Aug 16, 2022 at 4:23 AM Nathan Bossart <nathandbossart@gmail.com> wrote:
>
> On Mon, Aug 15, 2022 at 08:33:21PM +0700, John Naylor wrote:
> > +#ifdef USE_SSE2
> > +             chunk = _mm_loadu_si128((const __m128i *) &base[i]);
> > +#else
> > +             memcpy(&chunk, &base[i], sizeof(chunk));
> > +#endif                                                       /* USE_SSE2 */
>
> Perhaps there should be a macro or inline function for loading a vector so
> that these USE_SSE2 checks can be abstracted away, too.

This is done. Also:
- a complete overhaul of the pg_lfind8* tests
- using a typedef for the vector type
- some refactoring, name changes and other cleanups (a few of these
could also be applied to the 32-byte element path, but that is left
for future work)

TODO: json-specific tests of the new path

--
John Naylor
EDB: http://www.enterprisedb.com