[Webkit-unassigned] [Bug 238115] New: Reduce size of CodeBlock and UnlinkedCodeBlock.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238115

            Bug ID: 238115
           Summary: Reduce size of CodeBlock and UnlinkedCodeBlock.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mark.lam at apple.com

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.

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