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It seems that 12ad4d41 enabled collection by default as its needs stats.allocated_bytes to determine whether the program has exceeded its grace limit. However, enabling stats also enables some potentially expensive times checks. In general GC statistics should be cheap to compute (relative to the GC itself), so now we always compute them. This allows us to once again disable giveStats by default. Fixes #13864. Reviewers: simonmar, austin, erikd Reviewed By: simonmar Subscribers: rwbarton, thomie GHC Trac Issues: #13864 Differential Revision: https://phabricator.haskell.org/D3669
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