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1b9d1bcc6d
This reduces the compilation time of one reduced test case from Android from 16 seconds to 100 mseconds (we bail out), without negatively impacting any other test case we currently have. We still saw occasionally compilation timeouts on the AOSP buildbot. Hopefully, those will go away with this change. llvm-svn: 306235
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.