forked from OSchip/llvm-project
e448364320
An assertion in visitSDivInstruction() checked whether the divisor is constant by checking whether the argument is a ConstantInt. However, SCEVValidator allows the divisor to be simplified to a constant by ScalarEvolution. We synchronize the implementation of SCEVValidator and SCEVAffinator to both accept simplified SCEV expressions. llvm-svn: 275174 |
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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.