Revert "[arm64] Use root register for addressing external references."

This reverts commit 8e39af62df89e13c4bcbc0f6a013bdad9f5189eb.

Reason for revert: prevent v8 roll to chromium.

Original change's description:
> [arm64] Use root register for addressing external references.
> 
> This optimization is already done on x64 (7500e507).
> 
> Bug: v8:7844
> Change-Id: Iccc3bb55aa79ef1d4423576c79d9ce6f829f2828
> Reviewed-on: https://chromium-review.googlesource.com/1120343
> Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54162}

TBR=sigurds@chromium.org,georgia.kouveli@arm.com

Change-Id: I08801917164e42c99a14a5e767d5c034f6979e87
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7844
Reviewed-on: https://chromium-review.googlesource.com/1124996
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54188}
5 files changed
tree: 2b4f1d4a96154126e845b0885e35c2b683e3385d
  1. benchmarks/
  2. build_overrides/
  3. custom_deps/
  4. docs/
  5. gni/
  6. include/
  7. infra/
  8. samples/
  9. src/
  10. test/
  11. testing/
  12. third_party/
  13. tools/
  14. .clang-format
  15. .editorconfig
  16. .git-blame-ignore-revs
  17. .gitattributes
  18. .gitignore
  19. .gn
  20. .vpython
  21. .ycm_extra_conf.py
  22. AUTHORS
  23. BUILD.gn
  24. ChangeLog
  25. CODE_OF_CONDUCT.md
  26. codereview.settings
  27. DEPS
  28. LICENSE
  29. LICENSE.fdlibm
  30. LICENSE.strongtalk
  31. LICENSE.v8
  32. LICENSE.valgrind
  33. OWNERS
  34. PRESUBMIT.py
  35. README.md
  36. snapshot_toolchain.gni
  37. WATCHLISTS
README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://github.com/v8/v8/wiki

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned on the V8 wiki.