230908 2021-09-28 11:57:15 -0700 Reduce loop strength on ARM64 too 2024-04-08 13:37:17 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED CONFIGURATION CHANGED InRadar P2 Normal --- 232647 1 justin_michaud justin_michaud ews-watchlist keith_miller mark.lam msaboff saam tzagallo webkit-bug-importer oldest_to_newest 1797982 0 justin_michaud 2021-09-28 11:57:15 -0700 Reduce loop strength on ARM64 too 1797985 1 439504 justin_michaud 2021-09-28 12:06:16 -0700 Created attachment 439504 Patch 1797987 2 justin_michaud 2021-09-28 12:07:14 -0700 This is WIP, but I wanted to save it here so I don't lose it while testing perf 1797998 3 justin_michaud 2021-09-28 13:01:22 -0700 A mixed bag so far: memcpy-wasm-small 171.2750+-1.6420 ! 181.5388+-0.9457 ! definitely 1.0599x slower memcpy-wasm-large 438.1443+-14.3229 ^ 44.0324+-1.8863 ^ definitely 9.9505x faster memcpy-wasm-medium 20.1398+-0.6413 ! 22.5029+-0.4836 ! definitely 1.1173x slower memcpy-typed-loop-speculative 1304.0646+-23.7363 1283.0492+-10.2491 might be 1.0164x faster memcpy-typed-loop 59.6541+-0.3893 ? 59.7131+-0.6997 ? memcpy-wasm 339.8212+-1.6913 ^ 46.7857+-0.6053 ^ definitely 7.2634x faster memcpy-typed-loop-large 81118.9502+-150.6358 80774.3593+-894.3635 memcpy-loop 4919.8907+-68.8522 ? 4960.3104+-48.1172 ? memcpy-typed-loop-small 76.2613+-1.0061 ! 78.2971+-0.7698 ! definitely 1.0267x slower 1798662 4 439678 justin_michaud 2021-09-29 16:17:52 -0700 Created attachment 439678 Patch 1800689 5 webkit-bug-importer 2021-10-05 11:58:22 -0700 <rdar://problem/83897351> 2026870 6 justin_michaud 2024-04-08 13:37:17 -0700 Closing old bugs assigned to me 439504 2021-09-28 12:06:16 -0700 2021-09-29 16:17:50 -0700 Patch bug-230908-20210928120615.patch text/plain 26859 justin_michaud U3VidmVyc2lvbiBSZXZpc2lvbjogMjgyODI0CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCBk 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