Bug 207712

Summary:	[JSC] WeakGCMap should use WeakSet mechanism
Product:	WebKit	Reporter:	Yusuke Suzuki <ysuzuki>
Component:	JavaScriptCore	Assignee:	Yusuke Suzuki <ysuzuki>
Status:	NEW ---
Severity:	Normal
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=207715
Bug Depends on:	207715
Bug Blocks:

Description Yusuke Suzuki 2020-02-13 11:55:36 PST

Almost always, key is included inside value.
We were doing so just because our HashMap does not offer weak handling.
But Ryosuke added it, so just use it to shrink table size.