[Webkit-unassigned] [Bug 193993] New: [JSC] Shrink size of VM by lazily allocating IsoSubspaces for non-common types

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=193993

            Bug ID: 193993
           Summary: [JSC] Shrink size of VM by lazily allocating
                    IsoSubspaces for non-common types
           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: ysuzuki at apple.com

VM has a lot of IsoSubspaces, and each takes 504B.
Some of them are rarely used. We should allocate it lazily.

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