ASSIGNED 238115
Reduce size of CodeBlock and UnlinkedCodeBlock. 
https://bugs.webkit.org/show_bug.cgi?id=238115
Summary Reduce size of CodeBlock and UnlinkedCodeBlock.
Mark Lam
Reported 2022-03-19 12:50:42 PDT
Introduce a PackedFixedVector and PackedUniquePtr and use them in CodeBlock and UnlinkedCodeBlock. This reduces the size of the CodeBlock from 248 to 240 i.e. drops from 16 atoms (rounded up from 15.5) to 15 atoms. This reduces the size of the UnlinkedCodeBlock from 216 to 192 i.e. drops from 14 atoms (rounded up from 13.5) to 12 atoms.
Attachments
proposed patch. (82.99 KB, patch)
2022-03-19 12:57 PDT, Mark Lam 		ews-feeder: commit-queue-
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Mark Lam
Comment 1 2022-03-19 12:57:54 PDT
Created attachment 455170 [details] proposed patch. Let's get some EWS testing.
Mark Lam
Comment 2 2022-03-23 17:57:36 PDT
The current proposal using Packed pointers appear to have a perf regression. Going to try using a ButterflyFixedVector instead (on Yusuke's suggestion).
Radar WebKit Bug Importer
Comment 3 2022-03-26 12:51:15 PDT
<rdar://problem/90880721>
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