58341 – Enhancement for sys-libs/zlib-1.2.1-r2 (adding asm optimisations for x86)

Bug 58341 - Enhancement for sys-libs/zlib-1.2.1-r2 (adding asm optimisations for x86)

Summary: Enhancement for sys-libs/zlib-1.2.1-r2 (adding asm optimisations for x86)

Status:	RESOLVED WONTFIX

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	New packages (show other bugs)
Hardware:	x86 Linux

Importance:	High enhancement (vote)
Assignee:	Gentoo's Team for Core System packages

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2004-07-25 16:47 UTC by Stefan Briesenick (RETIRED)
Modified:	2006-10-05 16:44 UTC (History)
CC List:	2 users (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
zlib-1.2.1-r2.ebuild (zlib-1.2.1-r2.ebuild,2.27 KB, text/plain) 2004-07-25 16:49 UTC, Stefan Briesenick (RETIRED)	Details
zlib-1.2.1-r2.ebuild.diff (zlib-1.2.1-r2.ebuild.diff,1.37 KB, patch) 2004-07-25 16:50 UTC, Stefan Briesenick (RETIRED)	Details \| Diff
zlib-1.2.1-asm.patch (zlib-1.2.1-asm.patch,700 bytes, patch) 2004-07-25 16:52 UTC, Stefan Briesenick (RETIRED)	Details \| Diff
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Description Stefan Briesenick (RETIRED) gentoo-dev

2004-07-25 16:47:26 UTC

I've made an enhancement for sys-libs/zlib-1.2.1-r2, so one can use the asm optimisations in the contrib directory for i586 and i686.

ATTENTION: NEW USE-FLAG -> 'asm' (Using asm optimisations where available)

could be used also elsewhere in future for this purpose.


Reproducible: Always
Steps to Reproduce:

Comment 1 Stefan Briesenick (RETIRED) gentoo-dev

2004-07-25 16:49:34 UTC

Created attachment 36153 [details]
zlib-1.2.1-r2.ebuild

New zlib-1.2.1-r2 ebuild

Comment 2 Stefan Briesenick (RETIRED) gentoo-dev

2004-07-25 16:50:17 UTC

Created attachment 36154 [details, diff]
zlib-1.2.1-r2.ebuild.diff

diff only, use it against original zlib-1.2.1-r2.ebuild

Comment 3 Stefan Briesenick (RETIRED) gentoo-dev

2004-07-25 16:52:12 UTC

Created attachment 36155 [details, diff]
zlib-1.2.1-asm.patch

Patch for Makefile.in. Put it into $FILESDIR.
could be probably merged with zlib-1.2.1-build-fPIC.patch

Comment 4 Robin Johnson archtester

2006-10-05 09:28:52 UTC

do these optimizations still outperform modern GCCs?

Comment 5 Stefan Briesenick (RETIRED) gentoo-dev

2006-10-05 15:15:33 UTC

don't know, never tested. On the other hand, my ebuild patch is somewhat outdated. I suggest to just close that bug as WONTFIX.

btw: it would be cool to strip "-ftree-vectorize" from CFLAGS for zlib, since it breaks many programs, incl. most GTK-apps. I don't know why, since many other apps just run fine with zlib compiled with -ftree-vectorize. But as soon as you compile zlib again w/o that option, that broken apps are instantly working.

Comment 6 Robin Johnson archtester

2006-10-05 15:51:39 UTC

thanks, closing.

the tree-vectorize depends on your gcc ;-).

Comment 7 Stefan Briesenick (RETIRED) gentoo-dev

2006-10-05 16:22:34 UTC

hmmm, I had the problem with 4.1.x (not tested anymore for some weeks). Is it fixed now?

Comment 8 Robin Johnson archtester

2006-10-05 16:44:05 UTC

i didn't have much in the way of GTK stuff to test with, but I haven't specifically seen problems - maybe open a seperate bug for tree-vectorize.