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f17a78ef63
A statement with an empty domain complicates the invariant load hoisting and does not help any subsequent analysis or transformation. In fact it might introduce parameter dimensions or increase the schedule dimensionality. To this end, we remove statements with an empty domain early in the SCoP simplification. llvm-svn: 249276
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.