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* [ForwardOpTree] Support read-only value uses.Michael Kruse2017-07-241-0/+84
Read-only values (values defined before the SCoP) require special handing with -polly-analyze-read-only-scalars=true (which is the default). If active, each use of a value requires a read access. When a copied value uses a read-only value, we must also ensure that such a MemoryAccess is available or is created. Differential Revision: https://reviews.llvm.org/D35764 llvm-svn: 308876
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