TBR=mvstanton@chromium.org,neis@chromium.org,ahaas@chromium.org

Bug: v8:9247
Change-Id: I5433c863a54f3412d73df0d38aba3fdbcfac7ebe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627973
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61830}

Bug: v8:9247

TBR=bmeurer@chromium.org,neis@chromium.org
NOPRESUBMIT=true

Change-Id: Ia1e49d1aac09c4ff9e05d58fab9d08dd71198878
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1621931Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61682}

Drive-by: Refactor FlushInstructionCache to its own header. This removes
dependencies of objects.cc and code.cc

Bug: v8:8562
Change-Id: If23f3b9d4f2068e08c61c0f4b070ecfe1b9a6cc0
Reviewed-on: https://chromium-review.googlesource.com/c/1456081Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59435}

This replaces three passes over the roots with a single pass.
This also removes root synchronization logic.

The GC subroot index is computed from the |root| parameter of the visit
method. The new |description| parameter is used as an edge name.

Bug: chromium:811842
Change-Id: I03a9215d56b54b3eb5f7bc8b32d5b22ad091c68b
Reviewed-on: https://chromium-review.googlesource.com/916781Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51350}

R=ulan@chromium.org

Change-Id: I141daeffde426a75293ffa0565c867d73a81cbfc
Reviewed-on: https://chromium-review.googlesource.com/738776Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48968}

This move the {Code::next_code_link} into the data container, making it
possible to mutate the field even when {Code} objects are protected. It
also introduces a dedicated body descriptor for the container allowing
for tagged fields to be part of the container.

R=ulan@chromium.org
BUG=v8:6792

Change-Id: I56a9d53e8bb35aeb0a7036e3abf3ebee1ba2928d
Reviewed-on: https://chromium-review.googlesource.com/738184
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48966}

BUG=v8:5402,v8:6921

Change-Id: I96a8a7cdded6f7c37b6f1da659d63df9e3a5de2b
Reviewed-on: https://chromium-review.googlesource.com/718342
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48552}

There was a helpful TODO telling where it should live.

BUG=v8:5402,v8:6921

Change-Id: Id9022c72c9e7de8d76ea0db964217b766299195d
Reviewed-on: https://chromium-review.googlesource.com/718337Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48524}

This patch adds a new interface called RootVisitor and changes the root
iteration functions to accept a RootVisitor instead of an ObjectVisitor.

Future CLs will change ObjectVisitor to provide the host object to all
visiting functions, which will bring it in sync with static visitors.

Having separate visitors for roots and objects removes ambiguity in
VisitPointers and reduces chances of forgetting to record slots.

This is intended as pure refactoring. All places that require behavior
change are marked with TODO and will addressed in future CLs.

BUG=chromium:709075

Review-Url: https://codereview.chromium.org/2801073006
Cr-Commit-Position: refs/heads/master@{#44852}