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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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README
Polly - Polyhedral optimizations for LLVM ----------------------------------------- http://polly.llvm.org/ Polly uses a mathematical representation, the polyhedral model, to represent and transform loops and other control flow structures. Using an abstract representation it is possible to reason about transformations in a more general way and to use highly optimized linear programming libraries to figure out the optimal loop structure. These transformations can be used to do constant propagation through arrays, remove dead loop iterations, optimize loops for cache locality, optimize arrays, apply advanced automatic parallelization, drive vectorization, or they can be used to do software pipelining.