28442 2009-08-18 18:41:11 -0700 Assigning a function to an object should always use the existing transition, even if the transition is not specialised 2009-08-18 19:34:25 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) PC OS X 10.5 RESOLVED FIXED P2 Normal --- 28332 1 oliver webkit-unassigned oldest_to_newest 141346 0 oliver 2009-08-18 18:41:11 -0700 This results in unnecessarily bad (basically pathological) memory use and structure thrashing. 141349 1 35094 oliver 2009-08-18 18:48:43 -0700 Created attachment 35094 Patch v1 141368 2 oliver 2009-08-18 19:34:25 -0700 Committed r47474 35094 2009-08-18 18:48:43 -0700 2009-08-18 19:12:49 -0700 Patch v1 bug-28442-20090818184843.patch text/plain 1705 oliver ZGlmZiAtLWdpdCBhL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZyBiL0phdmFTY3JpcHRDb3JlL0No YW5nZUxvZwppbmRleCA4MDg4NWIzLi4xNDc2OGUxIDEwMDY0NAotLS0gYS9KYXZhU2NyaXB0Q29y ZS9DaGFuZ2VMb2cKKysrIGIvSmF2YVNjcmlwdENvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMTUg QEAKKzIwMDktMDgtMTggIE9saXZlciBIdW50ICA8b2xpdmVyQGFwcGxlLmNvbT4KKworICAgICAg ICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBBc3NpZ25pbmcgYSBmdW5j dGlvbiB0byBhbiBvYmplY3Qgc2hvdWxkIGFsd2F5cyB1c2UgdGhlIGV4aXN0aW5nIHRyYW5zaXRp b24sIGV2ZW4gaWYgdGhlIHRyYW5zaXRpb24gaXMgbm90IHNwZWNpYWxpemVkCisgICAgICAgIGh0 dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yODQ0MgorCisgICAgICAgIENo ZWNrIGZvciBhbiB1bnNwZWNpYWxpemVkIHRyYW5zaXRpb24gYXMgYW4gYWx0ZXJuYXRpdmUgdG8g YWx3YXlzIGZhaWxpbmcgaWYgc3BlY2lhbGlzYXRpb24gZG9lcyBub3QgbWF0Y2guCisKKyAgICAg ICAgKiBydW50aW1lL1N0cnVjdHVyZS5jcHA6CisgICAgICAgIChKU0M6OlN0cnVjdHVyZTo6YWRk UHJvcGVydHlUcmFuc2l0aW9uVG9FeGlzdGluZ1N0cnVjdHVyZSk6CisKIDIwMDktMDgtMTggIERp cmsgU2NodWx6ZSAgPGtyaXRAd2Via2l0Lm9yZz4KIAogICAgICAgICBSZXZpZXdlZCBieSBPbGl2 ZXIgSHVudC4KZGlmZiAtLWdpdCBhL0phdmFTY3JpcHRDb3JlL3J1bnRpbWUvU3RydWN0dXJlLmNw cCBiL0phdmFTY3JpcHRDb3JlL3J1bnRpbWUvU3RydWN0dXJlLmNwcAppbmRleCA1ZGZkOTE5Li43 ODk0MTMzIDEwMDY0NAotLS0gYS9KYXZhU2NyaXB0Q29yZS9ydW50aW1lL1N0cnVjdHVyZS5jcHAK KysrIGIvSmF2YVNjcmlwdENvcmUvcnVudGltZS9TdHJ1Y3R1cmUuY3BwCkBAIC0zODUsNyArMzg1 LDcgQEAgUGFzc1JlZlB0cjxTdHJ1Y3R1cmU+IFN0cnVjdHVyZTo6YWRkUHJvcGVydHlUcmFuc2l0 aW9uVG9FeGlzdGluZ1N0cnVjdHVyZShTdHJ1Y3QKICAgICAgICAgU3RydWN0dXJlKiBleGlzdGlu Z1RyYW5zaXRpb24gPSBzdHJ1Y3R1cmUtPm1fdHJhbnNpdGlvbnMuc2luZ2xlVHJhbnNpdGlvbjsK ICAgICAgICAgaWYgKGV4aXN0aW5nVHJhbnNpdGlvbiAmJiBleGlzdGluZ1RyYW5zaXRpb24tPm1f bmFtZUluUHJldmlvdXMuZ2V0KCkgPT0gcHJvcGVydHlOYW1lLnVzdHJpbmcoKS5yZXAoKQogICAg ICAgICAgICAgJiYgZXhpc3RpbmdUcmFuc2l0aW9uLT5tX2F0dHJpYnV0ZXNJblByZXZpb3VzID09 IGF0dHJpYnV0ZXMKLSAgICAgICAgICAgICYmIGV4aXN0aW5nVHJhbnNpdGlvbi0+bV9zcGVjaWZp Y1ZhbHVlSW5QcmV2aW91cyA9PSBzcGVjaWZpY1ZhbHVlKSB7CisgICAgICAgICAgICAmJiAoZXhp c3RpbmdUcmFuc2l0aW9uLT5tX3NwZWNpZmljVmFsdWVJblByZXZpb3VzID09IHNwZWNpZmljVmFs dWUgfHwgZXhpc3RpbmdUcmFuc2l0aW9uLT5tX3NwZWNpZmljVmFsdWVJblByZXZpb3VzID09IDAp KSB7CiAKICAgICAgICAgICAgIEFTU0VSVChzdHJ1Y3R1cmUtPm1fdHJhbnNpdGlvbnMuc2luZ2xl VHJhbnNpdGlvbi0+bV9vZmZzZXQgIT0gbm9PZmZzZXQpOwogICAgICAgICAgICAgb2Zmc2V0ID0g c3RydWN0dXJlLT5tX3RyYW5zaXRpb25zLnNpbmdsZVRyYW5zaXRpb24tPm1fb2Zmc2V0Ow==