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NEWS: note about recent changes around JIT [ci skip]

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This diff is backported from the upcoming preview release note.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67597 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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k0kubun 2019-04-17 09:24:48 +00:00
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@ -100,6 +100,11 @@ profile.rb, Profiler__::
JIT::
* JIT-ed code is recompiled to less-optimized code when an optimization assumption is invalidated.
* Method inlining is performed when a method is considered as pure.
This optimization is still experimental and many methods are NOT considred as pure yet.
* Default value of +--jit-max-cache+ is changed from 1,000 to 100
* Default value of +--jit-min-calls+ is changed from 5 to 10,000