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Carter Schonwald authored
Summary: The current primops for prefetching do not properly work in pure code; namely, the primops are not 'hoisted' into the correct call sites based on when arguments are evaluated. Instead, they should use a `seq`-like interface, which will cause it to be evaluated when the needed term is. See #9353 for the full discussion. Test Plan: updated tests for pure prefetch in T8256 to reflect the design changes in #9353 Reviewers: simonmar, hvr, ekmett, austin Reviewed By: ekmett, austin Subscribers: merijn, thomie, carter, simonmar Differential Revision: https://phabricator.haskell.org/D350 GHC Trac Issues: #9353
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