81a7f3e131
- Serial scavenge - Serial marking - Redudant safepoint operation scope - Redudant Thread::Current - Unused HandleVisitor::thread_ - Profile tag updates in PRODUCT mode - Freelist printing TEST=ci Change-Id: I2de4c50df37c7ebe9d267514bcbd548dd61a5a57 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/426582 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Alexander Aprelev <aam@google.com>