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Summary: Detect when the working set size of a profiled application is huge, by comparing the number of counts required to reach the hot percentile in the profile summary to a large threshold*. When the working set size is determined to be huge, disable peeling to avoid bloating the working set further. *Note that the selected threshold (15K) is significantly larger than the largest working set value in SPEC cpu2006 (which is gcc at around 11K). Reviewers: davidxl Subscribers: mehdi_amini, mzolotukhin, eraman, llvm-commits Differential Revision: https://reviews.llvm.org/D36288 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310005 91177308-0d34-0410-b5e6-96231b3b80d8