Revert "[vm] Add a simple compactor."
This reverts commit 5bdffcd32e.
Reason for revert: Failures on DBC, timeouts on hot reload and opt counter stress bots.
Original change's description:
> [vm] Add a simple compactor.
>
> The compactor copies all live objects in old space to fresh pages, places forwarding pointers in the old objects, forwards all the pointers, then frees the old pages. This has a high space overhead. It is not meant for use in production, but meant to test that the VM is properly set up to handle old-space objects moving.
>
> Large page objects and instruction objects are not moved.
>
> Bug: https://github.com/dart-lang/sdk/issues/30978
> Change-Id: Ia42683fd5e27a33702aa5e83bece803a8b005a4b
> Reviewed-on: https://dart-review.googlesource.com/13624
> Commit-Queue: Ryan Macnak <rmacnak@google.com>
> Reviewed-by: Zach Anderson <zra@google.com>
> Reviewed-by: Erik Corry <erikcorry@google.com>
TBR=rmacnak@google.com,zra@google.com,asiva@google.com,erikcorry@google.com
Change-Id: I4fda673561532b604d97b9b02189c030844d969d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: https://github.com/dart-lang/sdk/issues/30978
Reviewed-on: https://dart-review.googlesource.com/14680
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Ryan Macnak
e0c09211fc