It is super rare for variable declarations to have either a semantic or qualifiers.
Yet we take 24 bytes from each and every one of them to store these.
We can trivially hoist them into a separate structure, to save 16 bytes per variable declaration (from 56 to 40).
Created attachment 376225 [details]
Comment on attachment 376225 [details]
Clearing flags on attachment: 376225
Committed r248656: <https://trac.webkit.org/changeset/248656>
All reviewed patches have been landed. Closing bug.