RESOLVED FIXED Bug 203795
[JSC] Use LinkTimeConstants and make some properties lazy 
https://bugs.webkit.org/show_bug.cgi?id=203795
Summary [JSC] Use LinkTimeConstants and make some properties lazy
Yusuke Suzuki
Reported 2019-11-02 21:37:50 PDT
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Attachments
Patch (27.99 KB, patch)
2019-11-06 19:18 PST, Yusuke Suzuki 		no flags
DetailsFormatted DiffDiff
Patch (29.52 KB, patch)
2019-11-07 17:53 PST, Yusuke Suzuki 		no flags
DetailsFormatted DiffDiff
Patch (29.54 KB, patch)
2019-11-07 17:56 PST, Yusuke Suzuki 		keith_miller: review+
DetailsFormatted DiffDiff
Show Obsolete (2) View All Add attachment proposed patch, testcase, etc.
Yusuke Suzuki
Comment 1 2019-11-06 19:18:14 PST
Created attachment 383009 [details] Patch
Yusuke Suzuki
Comment 2 2019-11-07 17:53:06 PST
Created attachment 383098 [details] Patch
Yusuke Suzuki
Comment 3 2019-11-07 17:56:11 PST
Created attachment 383099 [details] Patch
Keith Miller
Comment 4 2019-11-07 18:20:02 PST
Comment on attachment 383099 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=383099&action=review r=me with comments. > Source/JavaScriptCore/runtime/JSGlobalObject.cpp:2015 > + if (m_mapIteratorProtocolWatchpointSet.isStillValid()) { Can't this be an ASSERT? How can this not be valid if you haven't initialized Map.prototype? I don't think it's possible to access the Map iterator prototype object without first creating a Map. > Source/JavaScriptCore/runtime/JSGlobalObject.cpp:2030 > + if (m_setIteratorProtocolWatchpointSet.isStillValid()) { ditto.
Yusuke Suzuki
Comment 5 2019-11-07 18:47:10 PST
Comment on attachment 383099 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=383099&action=review Thanks! >> Source/JavaScriptCore/runtime/JSGlobalObject.cpp:2015 >> + if (m_mapIteratorProtocolWatchpointSet.isStillValid()) { > > Can't this be an ASSERT? How can this not be valid if you haven't initialized Map.prototype? I don't think it's possible to access the Map iterator prototype object without first creating a Map. This can be invalid because m_mapIteratorProtocolWatchpointSet is also checked by mapIteratorPrototype's change. > Source/JavaScriptCore/runtime/JSGlobalObject.cpp:2020 > + if (m_mapSetWatchpointSet.isStillValid()) { On the other hand, this is only used here. So we can convert it to ASSERT. Fixed. >> Source/JavaScriptCore/runtime/JSGlobalObject.cpp:2030 >> + if (m_setIteratorProtocolWatchpointSet.isStillValid()) { > > ditto. Ditto. This can be invalid if setIteratorPrototype is changed. > Source/JavaScriptCore/runtime/JSGlobalObject.cpp:2035 > + if (m_setAddWatchpointSet.isStillValid()) { Ditto. Fixed.
Yusuke Suzuki
Comment 6 2019-11-08 13:11:37 PST
Committed r252256: <https://trac.webkit.org/changeset/252256>
Radar WebKit Bug Importer
Comment 7 2019-11-08 13:12:15 PST
<rdar://problem/57031944>
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