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At the end of a region statement, the PHINode must be generated while the current IRBuilder's block is the region's exit node. For obvious reasons: The PHINode references the region's exiting block. A partial write would insert new control flow, i.e. insert new basic blocks between the exiting blocks and the current block. We fix this by generating the PHI nodes (region exit values) before generating any MemoryAccess's stores. This should fix the AOSP buildbot. Reported-by: Eli Friedman <efriedma@quicinc.com> llvm-svn: 361204
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.