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* Apply include-what-you-use #include removal suggestions. NFC.Michael Kruse2019-03-281-5/+0
| | | | | | | | | | | | This removes unused includes (and forward declarations) as suggested by include-what-you-use. If a transitive include of a removed include is required to compile a file, I added the required header (or forward declaration if suggested by include-what-you-use). This should reduce compilation time and reduce the number of iterative recompilations when a header was changed. llvm-svn: 357209
* [CodeGen] LLVM OpenMP Backend.Michael Kruse2019-03-191-0/+228
The ParallelLoopGenerator class is changed such that GNU OpenMP specific code was removed, allowing to use it as super class in a template-pattern. Therefore, the code has been reorganized and one may not use the ParallelLoopGenerator directly anymore, instead specific implementations have to be provided. These implementations contain the library-specific code. As such, the "GOMP" (code completely taken from the existing backend) and "KMP" variant were created. For "check-polly" all tests that involved "GOMP": equivalents were added that test the new functionalities, like static scheduling and different chunk sizes. "docs/UsingPollyWithClang.rst" shows how the alternative backend may be used. Patch by Michael Halkenhäuser <michaelhalk@web.de> Differential Revision: https://reviews.llvm.org/D59100 llvm-svn: 356434
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