forked from OSchip/llvm-project
8bd7f3c0a5
In case LLVM pointers are annotated with !dereferencable attributes/metadata or LLVM can look at the allocation from which a pointer is derived, we can know that dereferencing pointers is safe and can be done unconditionally. We use this information to proof certain pointers as save to hoist and then hoist them unconditionally. llvm-svn: 297375 |
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README
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.