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The pattern recognition for MatMul is restrictive. The number of "disjuncts" in the isl_map containing constraint information was previously required to be 1 (as per isl_*_coalesce - which should ideally produce a domain map with a single disjunct, but does not under some circumstances). This was changed and made more flexible. Contributed-by: Annanay Agarwal <cs14btech11001@iith.ac.in> Differential Revision: https://reviews.llvm.org/D36460 llvm-svn: 311302
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.