| From: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql: Use Intel SSE 4.2 CRC instructions where available. |
| Date: | 2015-04-14 18:05:34 |
| Message-ID: | 552D56EE.1020100@iki.fi |
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| Lists: | pgsql-committers pgsql-hackers |
On 04/14/2015 07:01 PM, Simon Riggs wrote:
> On 14 April 2015 at 11:34, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
>
>> Or we can punt and always build the version with
>> the runtime check, unless overridden manually at configure command line.
>
> That seems safer as the default, which is what the original patch did.
>
> We can optimise that for known good builds later if desired.
I committed the __SSE_4_2__ test for now, so we still build the SSE-only
version if the target allows that. We'll see how that works..
- Heikki
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