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Before we defined GPGPU_CODEGEN to '0', which does not disable the relevant code as we just check if that value is defined at all. We now follow the cmake approach and only define GPGPU_CODEGEN, if the feature should be enabled. Reported by: Sebastian Pop <spop@codeaurora.org> llvm-svn: 162275
Polly - Polyhedral optimizations for LLVM 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.