4ba60fe9eb
In case we are at the innermost band, we try to prepare for vectorization. This means, we look for the innermost parallel loop and strip mine this loop to the innermost level using a strip-mine factor corresponding to the number of vector iterations. For whatever reason, the code that implemented this feature was broken. We now added a comment, a test case and obviously also the right code. llvm-svn: 203544 |
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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.