1c3af89309
Copy from Archiving/zlib based on submit request 25075 from user msmeissn OBS-URL: https://build.opensuse.org/request/show/25075 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/zlib?expand=0&rev=13
59 lines
2.5 KiB
Diff
59 lines
2.5 KiB
Diff
Index: contrib/asm686/match.S
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===================================================================
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--- contrib/asm686/match.S.orig 2005-07-12 20:08:20.000000000 +0200
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+++ contrib/asm686/match.S 2009-11-24 17:22:26.833478000 +0100
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@@ -1,9 +1,23 @@
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-/* match.s -- Pentium-Pro-optimized version of longest_match()
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- * Written for zlib 1.1.2
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- * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
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+/* match.S -- x86 assembly version of the zlib longest_match() function.
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+ * Optimized for the Intel 686 chips (PPro and later).
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*
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- * This is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License.
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+ * Copyright (C) 1998, 2007 Brian Raiter <breadbox@muppetlabs.com>
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+ *
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+ * This software is provided 'as-is', without any express or implied
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+ * warranty. In no event will the author be held liable for any damages
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+ * arising from the use of this software.
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+ *
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+ * Permission is granted to anyone to use this software for any purpose,
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+ * including commercial applications, and to alter it and redistribute it
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+ * freely, subject to the following restrictions:
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+ *
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+ * 1. The origin of this software must not be misrepresented; you must not
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+ * claim that you wrote the original software. If you use this software
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+ * in a product, an acknowledgment in the product documentation would be
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+ * appreciated but is not required.
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+ * 2. Altered source versions must be plainly marked as such, and must not be
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+ * misrepresented as being the original software.
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+ * 3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef NO_UNDERLINE
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Index: contrib/asm686/README.686
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===================================================================
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--- contrib/asm686/README.686.orig 1998-06-19 16:47:27.000000000 +0200
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+++ contrib/asm686/README.686 2009-11-24 17:22:26.838475000 +0100
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@@ -32,3 +32,20 @@ then do:
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CFLAGS="-O3 -DASMV" ./configure
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make OBJA=match.o
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+
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+
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+Update:
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+
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+I've been ignoring these assembly routines for years, believing that
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+gcc's generated code had caught up with it sometime around gcc 2.95
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+and the major rearchitecting of the Pentium 4. However, I recently
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+learned that, despite what I believed, this code still has some life
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+in it. On the Pentium 4 and AMD64 chips, it continues to run about 8%
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+faster than the code produced by gcc 4.1.
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+
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+In acknowledgement of its continuing usefulness, I've altered the
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+license to match that of the rest of zlib. Share and Enjoy!
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+
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+Brian Raiter
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+breadbox@muppetlabs.com
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+April, 2007
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