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We harden one test case by ensuring no additional stores may possibly be introduced between the stores we check for and the basic block terminator statements. We also add a test case for the situation where a value that is passed from a non-affine region to a PHI node does not dominate the exit of the non-affine region. This case has come up in patch reviews, so we make sure it is properly handled today and in the future. llvm-svn: 250217
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.