Bug 230908

Summary: Reduce loop strength on ARM64 too
Product: WebKit Reporter: Justin Michaud <justin_michaud>
Component: New BugsAssignee: Justin Michaud <justin_michaud>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: ews-watchlist, keith_miller, mark.lam, msaboff, saam, tzagallo, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 232647    
Bug Blocks:    
Attachments:
Description Flags
Patch
none
Patch ews-feeder: commit-queue-

Justin Michaud
Reported 2021-09-28 11:57:15 PDT
Reduce loop strength on ARM64 too
Attachments
Patch (26.23 KB, patch)
2021-09-28 12:06 PDT, Justin Michaud 		no flags
DetailsFormatted DiffDiff
Patch (29.59 KB, patch)
2021-09-29 16:17 PDT, Justin Michaud 		ews-feeder: commit-queue-
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Justin Michaud
Comment 1 2021-09-28 12:06:16 PDT
Created attachment 439504 [details] Patch
Justin Michaud
Comment 2 2021-09-28 12:07:14 PDT
This is WIP, but I wanted to save it here so I don't lose it while testing perf
Justin Michaud
Comment 3 2021-09-28 13:01:22 PDT
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
Justin Michaud
Comment 4 2021-09-29 16:17:52 PDT
Created attachment 439678 [details] Patch
Radar WebKit Bug Importer
Comment 5 2021-10-05 11:58:22 PDT
<rdar://problem/83897351>
Justin Michaud
Comment 6 2024-04-08 13:37:17 PDT
Closing old bugs assigned to me
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