forked from OSchip/llvm-project
0aff3174dc
Root cause is VectorBlockGenerator::copyStmt iterates all instructions in basic block, however some load instructions may be not unnecessary thus removed by simplification. As a result, these load instructions don't have a corresponding array. Looking at BlockGenerator::copyBB, it only iterates instructions list of ScopStmt. Given it must be a block type scop in case of vectorization, I think we should do the same in VectorBlockGenerator::copyStmt. Patch by bin.narwal <bin.narwal@gmail.com> Differential Revision: https://reviews.llvm.org/D70076 |
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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.