tree a9094ada4ccf3b9bf47badd9b556cfc10a8c00cd
parent a1b7fad86a19f87bb5f176fd0941992e927e7936
author Ryan Macnak <rmacnak@google.com> 1548284387 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1548284387 +0000

[vm] Reference type test stubs through Code; use the type as the owner of a type test stub.

Directly referencing VM isolate instructions from an isolate snapshot causes the instructions to be copied into the isolate's image page because instructions do not use the indirection of the ref array. Duplicating the instructions caused TypeTestingStubFinder::LookupByAddresss to be unable to identity the duplicate copies of the VM isolate type testing stubs.

Fixes identity of StubCode::*TypeTest broken by duplication in snapshot.
Fixes generating AppJIT snapshots after loading from AppJIT snapshots.
Fixes attribution of ticks for type test stubs in the AOT profiler.

Change-Id: I9879a85bd548e694ee36e14f795898582ccdddb0
Reviewed-on: https://dart-review.googlesource.com/c/90501
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Zach Anderson <zra@google.com>