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b0cea8ff39
was it not very helpful, it was also wrong! The problem is shown in the testcase: the alloca might be passed to a nocapture callee which dereferences it and returns the original pointer. But because it was a nocapture call we think we don't need to track its uses, but we do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61876 91177308-0d34-0410-b5e6-96231b3b80d8