233905 2021-12-06 17:39:02 -0800 TypedArray prototype set should go down the fast path when using non clamped integer types of the same byte size 2021-12-07 20:01:22 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 saam saam ews-watchlist keith_miller mark.lam msaboff tzagallo webkit-bug-importer oldest_to_newest 1820840 0 saam 2021-12-06 17:39:02 -0800 ... 1820847 1 446106 saam 2021-12-06 18:27:47 -0800 Created attachment 446106 patch 1820849 2 446106 keith_miller 2021-12-06 18:33:32 -0800 Comment on attachment 446106 patch View in context: https://bugs.webkit.org/attachment.cgi?id=446106&action=review > Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h:283 > + if (isInt(Adaptor::typeValue) && isInt(ci->typedArrayStorageType) && !isClamped(Adaptor::typeValue) && JSC::elementSize(Adaptor::typeValue) == JSC::elementSize(ci->typedArrayStorageType)) Nit: Why do you need the isClamped check? Shouldn't that follow from the if above and the fact that the elementSizes are the same? It might still be worth having as an ASSERT in the body of this if though. 1820883 3 446106 saam 2021-12-06 21:50:06 -0800 Comment on attachment 446106 patch View in context: https://bugs.webkit.org/attachment.cgi?id=446106&action=review >> Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h:283 >> + if (isInt(Adaptor::typeValue) && isInt(ci->typedArrayStorageType) && !isClamped(Adaptor::typeValue) && JSC::elementSize(Adaptor::typeValue) == JSC::elementSize(ci->typedArrayStorageType)) > > Nit: Why do you need the isClamped check? Shouldn't that follow from the if above and the fact that the elementSizes are the same? It might still be worth having as an ASSERT in the body of this if though. No, because we could have something like, |this| is Uint8ClampedArray and the source is Int8Array. Above check doesn't hit, element sizes are the same, but we can't use this copying path. 1820884 4 446120 saam 2021-12-06 21:50:24 -0800 Created attachment 446120 patch for landing 1820885 5 446120 saam 2021-12-06 21:51:12 -0800 Comment on attachment 446120 patch for landing View in context: https://bugs.webkit.org/attachment.cgi?id=446120&action=review > Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h:219 > + || (elementSize == otherElementSize && (static_cast<void*>(typedVector() + offset) <= static_cast<void*>(other->typedVector() + otherOffset))) this fixes a pre-existing bug where we sometimes do a forwards loop even though we should've been doing a backwards loop. I added a test for this. 1821008 6 446120 keith_miller 2021-12-07 06:08:10 -0800 Comment on attachment 446120 patch for landing r=me again. 1821346 7 ews-feeder 2021-12-07 20:00:30 -0800 Committed r286639 (244952@main): <https://commits.webkit.org/244952@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 446120. 1821347 8 webkit-bug-importer 2021-12-07 20:01:22 -0800 <rdar://problem/86189423> 446106 2021-12-06 18:27:47 -0800 2021-12-06 21:50:24 -0800 patch b-backup.diff text/plain 7111 saam SW5kZXg6IEpTVGVzdHMvQ2hhbmdlTG9nCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIEpTVGVzdHMvQ2hhbmdlTG9n CShyZXZpc2lvbiAyODY1ODQpCisrKyBKU1Rlc3RzL0NoYW5nZUxvZwkod29ya2luZyBjb3B5KQpA QCAtMSwzICsxLDEzIEBACisyMDIxLTEyLTA2ICBTYWFtIEJhcmF0aSAgPHNiYXJhdGlAYXBwbGUu Y29tPgorCisgICAgICAgIFR5cGVkQXJyYXkgcHJvdG90eXBlIHNldCBzaG91bGQgZ28gZG93biB0 aGUgZmFzdCBwYXRoIHdoZW4gdXNpbmcgbm9uIGNsYW1wZWQgaW50ZWdlciB0eXBlcyBvZiB0aGUg c2FtZSBieXRlIHNpemUKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcu Y2dpP2lkPTIzMzkwNQorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisg ICAgICAgICogbWljcm9iZW5jaG1hcmtzL3R5cGVkLWFycmF5LXByb3RvdHlwZS1zZXQuanM6IEFk 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