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fd229caa01
When we're remapping an AddRec, the AddRec constructed by a partial rewrite might not make sense. This triggers an assertion complaining it's not loop-invariant. Instead of constructing the partially rewritten AddRec, just skip straight to calling evaluateAtIteration. Testcase was automatically reduced using llvm-reduce, so it's a little messy, but hopefully makes sense. Differential Revision: https://reviews.llvm.org/D102959 |
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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.