Re: Add RISC-V Zbb popcount optimization - Mailing list pgsql-hackers

From Greg Burd
Subject Re: Add RISC-V Zbb popcount optimization
Date
Msg-id d39848c8-9b01-4838-90bc-cd0c34678251@app.fastmail.com
Whole thread
In response to Re: Add RISC-V Zbb popcount optimization  ("Greg Burd" <greg@burd.me>)
List pgsql-hackers
Hello,

The attached patch addresses the RISC-V instability when compiled with Clang < 22 related to vectorization by disabling
thatfeature in during configuration.  This fix is verified on greenfly which now passes tests given that it is now
compiledwith Clang 22.
 

IMO, given that this impacts at least one important thing in a silent and broken way it feels like something we should
adoptin v19 and not wait.
 

best.

-greg

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