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630fc7b82a
distributeDomain() and filterKnownValInst() are used in a scop of ForwardOpTree that limits the number of isl operations. Therefore some isl functions may return null after any operation. Remove assertion that assume non-null results and handle isl_*_foreach returning isl::stat::error. I hope this fixes the crash of the asop buildbot at ihevc_recon.c. llvm-svn: 310461
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.