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PolyhedralInfo is tied to the legacy pass manager. With the eventual removal of the legacy pass manager it will not be useful anymore. PolyhedralInfo was an experiment to make Polly's analysis available to other passes. Its power is limited due to not being able to make assumptions for which regular Polly would emit a runtime condition/code versioning during optimization. When eventually porting such an API to the new pass manager, we will have to invent a new API.
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.