tree 6eee64e6c31a00936d33da60138ea73dd20f8dfb
parent f3873dd6fc6d270b0e28baaf8803552130cf179d
author Martijn Vels <mvels@google.com> 1669659698 -0800
committer Copybara-Service <copybara-worker@google.com> 1669659792 -0800

Optimize Arena Ctor/Dtor for lazy field

LazyField explicitly registers `ArenaDtor` for destructing the lazy Cord contents which is particularly heavily used in extension sets. This is inefficient as it requires an indirect thunk call into the lazy field instance which then itself calls the Cord destructor. We can directly register the Cord for destruction which results in half the cleanup space (Tagged cleanup), and a direct call into the Cord destructor.

PiperOrigin-RevId: 491379222