forked from OSchip/llvm-project
fbde435517
The map is iterated over when generating the values escaping the SCoP. The indeterministic iteration order of DenseMap causes the output IR to change at every compilation, adding noise to comparisons. Replace DenseMap by a MapVector to ensure the same iteration order at every compilation. llvm-svn: 277832 |
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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.