Date: Wed, 14 Jan 2009 16:20:02 GMT From: Christian Weisgerber <naddy@mips.inka.de> To: freebsd-multimedia@FreeBSD.org Subject: Re: ports/127468: [PATCH]audio/wavpack: update to 4.50.1 Message-ID: <200901141620.n0EGK2AE013795@freefall.freebsd.org>
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The following reply was made to PR ports/127468; it has been noted by GNATS.
From: Christian Weisgerber <naddy@mips.inka.de>
To: bf <bf2006a@yahoo.com>
Cc: bug-followup@FreeBSD.org
Subject: Re: ports/127468: [PATCH]audio/wavpack: update to 4.50.1
Date: Wed, 14 Jan 2009 16:39:16 +0100
bf:
> Well, you haven't given me enough
> information to explain your results.
> The performance also depends on your
> compiler, compiler flags, and the data
> encoded. But I'm guessing that you used
> gcc > 4, which by default on amd64
> exploits SIMD parallelism even when you
> don't use SIMD intrinsics explicitly in
> code -- and in this case you have some
> effective SSE extensions in your
> hardware. Recall that the default
Yes.
> compiler on FreeBSD 6.x is 3.4.6, which
> doesn't do this nearly as well, and
I tried building wavpack with MMX support on 6.4/i386, but cc aborts
with an internal compiler error there.
> Therefore I think that this build option
> should be exposed in the port Makefile,
> whether in an OPTION or just a simple
> knob, off by default.
Well, we'll have to figure out where it _can_ be enabled.
6.x 7.x 8.x
i386 no yes ?
amd64 ? ? yes
Care to check the rest of the matrix?
(This is why I'm not happy with such knobs. The effort of supporting
them snowballs beyond the gain they offer.)
--
Christian "naddy" Weisgerber naddy@mips.inka.de
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