forked from OSchip/llvm-project
c0bc995429
The schedule of a fused loop has one isl_space per statement, such that a conversion to a isl_map fails. However, the prevectorization is interested in the schedule space only: Converting to the non-union representation only after extracting the schedule range fixes the problem. This fixes llvm.org/PR46578 |
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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.