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29a4dd92b7
Since r274197 -polly-position=before-vectorizer caused various LNT failures for example in SingleSource/Benchmarks/Linpack. These failures seem to only occur when the CFLAA pass is scheduled in our codegen-cleanup passes, which suggests that the way we call this AA pass is somehow problematic. As this pass is not of high importance, we drop the pass for now to prevent these failures from happening. At a later point, we might investigate more in-depth why this specific usage scenario caused correctness issues. llvm-svn: 274427
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.