forked from OSchip/llvm-project
9cc8340fea
Additive expressions can have constant factors too that we can extract and thereby simplify the internal representation. For now we do compute the gcd of all constant factors but only extract the same (possibly negated) factor if there is one. llvm-svn: 267445 |
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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.