142651 2015-03-12 21:38:22 -0700 Introduce SymbolType into SpeculativeTypes 2015-05-14 10:39:11 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 140435 145000 145001 1 ysuzuki ysuzuki commit-queue darin fpizlo ggaren oliver oldest_to_newest 1076844 0 ysuzuki 2015-03-12 21:38:22 -0700 Currently, Symbol is classified as SpecCellOther. But this is too conservative analysis and there's room to optimize it. Introducing SpecSymbol and analyzing this type in DFG/FTL brings faster Symbol comparison and lookups with it. It will encourage some applications that uses Symbol as an unique key, like React.js. 1090092 1 ysuzuki 2015-04-29 11:47:10 -0700 CellOther is used for non-user-visible Cell objects. So current status (categorizing Symbol into CellOther type) is not correct. 1094796 2 ysuzuki 2015-05-14 07:30:55 -0700 Let's introduce SpecSymbol at first. In the separated patch, I'll introduce SymbolUse. 1094802 3 253121 ysuzuki 2015-05-14 08:27:06 -0700 Created attachment 253121 Patch 1094815 4 253121 ysuzuki 2015-05-14 09:02:49 -0700 Comment on attachment 253121 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=253121&action=review > Source/JavaScriptCore/dfg/DFGConstantFoldingPhase.cpp:454 > + if (m_state.forNode(node->child1()).m_type & ~(SpecFullNumber | SpecBoolean | SpecString | SpecSymbol)) ToPrimitive is used in string concatnation. It is tested in tests/stress/dfg-to-primitive-pass-symbol.js 1094837 5 253121 commit-queue 2015-05-14 10:39:06 -0700 Comment on attachment 253121 Patch Clearing flags on attachment: 253121 Committed r184340: <http://trac.webkit.org/changeset/184340> 1094838 6 commit-queue 2015-05-14 10:39:11 -0700 All reviewed patches have been landed. Closing bug. 253121 2015-05-14 08:27:06 -0700 2015-05-14 10:39:06 -0700 Patch bug-142651-20150515002542.patch text/plain 8343 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMTg0MzMyCmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCAy OTkyZjgwZjIwZGU2YWQ4OGNkMTUyNmVjYTE5MjNhMmUwNGRmNjg5Li5hNjE4OGIwZWZkMDAwMWQ0 YjkwZmQwNTI2MmI2YWJjOTU0NzhiYWVkIDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwzNCBAQAorMjAxNS0wNS0xNCAgWXVzdWtlIFN1enVraSAgPHV0YXRhbmUudGVhQGdtYWls LmNvbT4KKworICAgICAgICBJbnRyb2R1Y2UgU3ltYm9sVHlwZSBpbnRvIFNwZWN1bGF0aXZlVHlw ZXMKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTE0MjY1 MQorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAgICAgIEludHJv ZHVjZSBTcGVjU3ltYm9sIHR5cGUgaW50byBzcGVjdWxhdGl2ZSB0eXBlcy4KKyAgICAgICAgUHJl dmlvdXNseSBzeW1ib2wgdHlwZSBpcyBjYXRlZ29yaXplZCBpbnRvIFNwZWNDZWxsT3RoZXIuCisg 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