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Re: Making empty Bitmapsets always be NULL - Mailing list pgsql-hackers

From Ranier Vilela
Subject Re: Making empty Bitmapsets always be NULL
Date
Msg-id CAEudQArGkwRNu1RwKh+VKHq461MYWvuPetMXuv4M5A1NT=Asng@mail.gmail.com
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In response to Making empty Bitmapsets always be NULL  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Making empty Bitmapsets always be NULL  (David Rowley <dgrowleyml@gmail.com>)
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Hi,

David Rowley wrote:
>I've adjusted the attached patch to do that.

I think that was room for more improvements.

1. bms_member_index Bitmapset can be const.
2. Only compute BITNUM when necessary.
3. Avoid enlargement when nwords is equal wordnum.
    Can save cycles when in corner cases?

Just for convenience I made a new version of the patch,
If want to use it.

regards,
Ranier Vilela
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