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The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
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Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction,
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END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work.

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Licensed under the Apache License, Version 2.0 (the "License");
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http://www.apache.org/licenses/LICENSE-2.0

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---- LLVM Exceptions to the Apache 2.0 License ----

As an exception, if, as a result of your compiling your source code, portions
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Software from third parties included in the LLVM Project:
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The LLVM Project contains third party software which is under different license
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2) It will contain specific license and restriction terms at the top of every
   file.

==============================================================================
Legacy LLVM License (https://llvm.org/docs/DeveloperPolicy.html#legacy):
==============================================================================
University of Illinois/NCSA
Open Source License

Developed by:

LLVM Team

University of Illinois at Urbana-Champaign

http://llvm.org

Permission is hereby granted, free of charge, to any person obtaining a copy of
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* Redistributions of source code must retain the above copyright notice,
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* Neither the names of the LLVM Team, University of Illinois at
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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