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------------------------------------------------------------------------ r312022 | hans | 2017-08-29 11:41:00 -0700 (Tue, 29 Aug 2017) | 10 lines [DAG] Bound loop dependence check in merge optimization. The loop dependence check looks for dependencies between store merge candidates not captured by the chain sub-DAG doing a check of predecessors which may be very large. Conservatively bound number of nodes checked for compilation time. (Resolves PR34326). Landing on behalf of Nirav Dave to unblock the 5.0.0 release. Differential Revision: https://reviews.llvm.org/D37220 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@312041 91177308-0d34-0410-b5e6-96231b3b80d8