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Summary: This patch replaces isKnownNonNull() with isKnownNonNullAt() when checking nullness of passing arguments at callsite. In this way it can handle cases where the argument does not have nonnull attribute but has a dominating null check from the CFG. Reviewers: reames Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D12779 llvm-svn: 247356
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