Re: Using POPCNT and other advanced bit manipulation instructions - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Using POPCNT and other advanced bit manipulation instructions
Date
Msg-id 2F6CDF3B-08B9-4A15-ABDF-55D7F82AB76E@anarazel.de
Whole thread Raw
In response to Re: Using POPCNT and other advanced bit manipulation instructions  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Using POPCNT and other advanced bit manipulation instructions  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: Using POPCNT and other advanced bit manipulation instructions  (Andrew Gierth <andrew@tao11.riddles.org.uk>)
Re: Using POPCNT and other advanced bit manipulation instructions  (Alvaro Herrera <alvherre@2ndquadrant.com>)
List pgsql-hackers
Hi,

On February 13, 2019 8:40:14 PM GMT+01:00, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>Alvaro Herrera <alvherre@2ndquadrant.com> writes:
>> I've pushed this now.  Let's see what the buildfarm has to say about
>it.
>
>It's likely to be hard to tell, given the amount of pink from the Ryu
>patch.  If Andrew is not planning to clean that up PDQ, I'd suggest
>reverting that patch pending having some repairs for it.

I'd assume that breaking bit counting would cause distinct enough damage (compile time or crashes).  That's not to say
thatreverting ryu shouldn't be considered (although I'm not that bothered by cross version, ia64 and cygwin failures,
especiallybecause the latter two might be hard to come by outside the bf). 

Andres
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.


pgsql-hackers by date:

Previous
From: Tom Lane
Date:
Subject: Re: Using POPCNT and other advanced bit manipulation instructions
Next
From: Tom Lane
Date:
Subject: Re: Using POPCNT and other advanced bit manipulation instructions