187852 2018-07-20 03:06:38 -0700 [JSC] A bit performance improvement for Object.assign by cleaning up code 2018-07-20 11:29:21 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 ysuzuki ysuzuki ews-watchlist keith_miller mark.lam msaboff saam webkit-bug-importer oldest_to_newest 1443729 0 ysuzuki 2018-07-20 03:06:38 -0700 [JSC] A bit performance improvement for Object.assign by cleaning up code 1443730 1 345438 ysuzuki 2018-07-20 03:09:17 -0700 Created attachment 345438 Patch 1443832 2 345438 saam 2018-07-20 10:57:48 -0700 Comment on attachment 345438 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=345438&action=review r=me > Source/JavaScriptCore/ChangeLog:11 > + 2. canDoFastPath is not necessary. Restructuring the code to clean up things. I agree this is a bit ugly, but the reason I wrote it that way so was we don't try to use the Structure* after the source could have potentially transitioned. I would vote for just loading the structure twice instead of keeping a variable around that points to something that may no longer be source's structure. (LLVM should CSE the structure load anyways) 1443856 3 ysuzuki 2018-07-20 11:28:33 -0700 Committed r234058: <https://trac.webkit.org/changeset/234058> 1443857 4 webkit-bug-importer 2018-07-20 11:29:21 -0700 <rdar://problem/42437911> 345438 2018-07-20 03:09:17 -0700 2018-07-20 10:57:48 -0700 Patch bug-187852-20180720190916.patch text/plain 8192 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMjM0MDM4CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCAy ZWFiMWZlYjU4ZTM0MTI5Yzk0MGFiNjg5YTVjNjIyNTU2NTJmOWQyLi45MGU1ZGQ2NGJhMTIwN2M2 Y2RmZWZhY2RiYjg3OGJkZjcyZmU2NWI2IDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwyNCBAQAorMjAxOC0wNy0yMCAgWXVzdWtlIFN1enVraSAgPHV0YXRhbmUudGVhQGdtYWls LmNvbT4KKworICAgICAgICBbSlNDXSBBIGJpdCBwZXJmb3JtYW5jZSBpbXByb3ZlbWVudCBmb3Ig T2JqZWN0LmFzc2lnbiBieSBjbGVhbmluZyB1cCBjb2RlCisgICAgICAgIGh0dHBzOi8vYnVncy53 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