other-licenses/nsis/Contrib/README
author Steve Snyder <swsnyder@snydernet.net>
Thu, 01 Oct 2009 14:19:41 -0400
changeset 33346 8a43f01f1d6478ad072c1f4a41fb633f8a5e3a32
parent 23964 ba15a84af7e6c364570feb7b5a66cea87ba460c8
child 42344 2074183c0d6caa985ff1b026d614594c3737268f
permissions -rw-r--r--
Bug 512865. qcms: Improve SSE2 performance, add SSE support. r=jrmuizel This patch greatly improves the performance of QCMS transformations on x86 & x86_64 systems. Some notes: 0. On 32-bit x86 systems it does runtime selection between non-SIMD, SSE, and SSE2 code paths. 1. On x86_64 systems the SSE2 code path is always taken. The non-SIMD and SSE code paths are left intact, but contemporary versions of the GCC and MSVC compilers will see that they cannot be reached and optimize them away. 2. The execution of the SSE2 code path is reduced by 67%, relative to the original Intel/Microsoft formatted ASM code. The relative performance is seen on a Pentium4 (Northwood) 2.4GHz CPU with DDR1 RAM. 3. The SSE code path provides a 80% reduction in execution time, relative to the non-SIMD code path. The relative performance is seen on a Pentium3 (Coppermine) 1.26GHz CPU with SDRAM. 4. The code has been split out into separate files so that it can be built with different cflags (-msse, and -msse2) when using gcc. 5. Try to land again, this time with __attribute__((__force_align_arg_pointer__)) to avoid crashes on linux.

These directories contain modified source code to the NSIS Plugins used by the
Windows installers. All of these plugin dll's have been compiled with VC6.

NSIS project page: http://nsis.sourceforge.net/
NSIS Unicode port project page: http://www.scratchpaper.com/

APPLICABLE LICENSES
-------------------
* All NSIS source code, plug-ins, documentation, examples, header files and
  graphics, with the exception of the compression modules and where otherwise
  noted, are licensed under the zlib/libpng license.

* The zlib compression module for NSIS is licensed under the zlib/libpng
  license.

* The bzip2 compression module for NSIS is licensed under the bzip2 license.

* The LZMA compression module for NSIS is licensed under the Common Public
  License version 1.0.

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ExDLL NSIS Unicode source 2.38.1 for plugin projects
http://www.scratchpaper.com/
These files are required to compile the nsProcess and ShellLink plugins. No
changes were made to these files.

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nsProcess NSIS plugin v1.5
http://nsis.sourceforge.net/NsProcess_plugin
Unicode support was added for this plugin. A diff of the changes to the source
are available at:
https://bugzilla.mozilla.org/show_bug.cgi?id=473348
https://bugzilla.mozilla.org/attachment.cgi?id=357012

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ShellLink NSIS plugin v1.1
http://nsis.sourceforge.net/ShellLink_plug-in
Unicode support was added for this plugin. A diff of the changes to the source
are available at:
https://bugzilla.mozilla.org/show_bug.cgi?id=473348
https://bugzilla.mozilla.org/attachment.cgi?id=357058

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UAC NSIS plugin v0.0.10a
http://nsis.sourceforge.net/UAC_plug-in
The source files already support Unicode but there is no Unicode distribution
so the plugin had to be compiled with Unicode support. A diff of the changes to
the source are available at:
https://bugzilla.mozilla.org/show_bug.cgi?id=473348
https://bugzilla.mozilla.org/attachment.cgi?id=357014

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