Re: Memory prefetching while sequentially fetching from SortTuple array, tuplestore

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От Tom Lane
Тема Re: Memory prefetching while sequentially fetching from SortTuple array, tuplestore
Дата
Msg-id 28289.1437104982@sss.pgh.pa.us
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Ответ на Memory prefetching while sequentially fetching from SortTuple array, tuplestore  (Peter Geoghegan <pg@heroku.com>)
Ответы Re: Memory prefetching while sequentially fetching from SortTuple array, tuplestore  (Peter Geoghegan <pg@heroku.com>)
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Peter Geoghegan <pg@heroku.com> writes:
> Attached patch adds a portable Postgres wrapper on the GCC intrinsic.

Meh.  I don't like the assumption that non-GCC compilers will be smart
enough to optimize away the useless-to-them if() tests this adds.
Please refactor that so that there is exactly 0 new code when the
intrinsic doesn't exist.
        regards, tom lane

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