tree 5053e1a6f5d4a14d706e9c844971a15a51944d00
parent 15e6c0bca99648519a8a765adbd1dc215bf277f1
author Konstantin Shcheglov <scheglov@google.com> 1559586499 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1559586499 +0000

Reuse field tails/offsets in VTable instances.

So, that we don't have to allocate these lists for each instance.
This makes it cheaper to have serialize more objects.

In a synthetic performance test, where we turn IDL builders into
bytes 100 times, this improves time to bytes from 45 to 34 seconds.

R=paulberry@google.com

Change-Id: Ie8c9a8ed01b4c0d4abeba96ed5e99bd430f9309d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/104600
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>