Revert "[turbofan] re-wire Unreachable to the graph end at EffectPhi's"

This reverts commit 2c0b1f6e9d98ea75e2d39c3492f0e530cf447e5e.

Reason for revert: Seems to cause GC stress failures blocking LKGR:
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/22453
https://ci.chromium.org/p/v8/builders/ci/V8%20Mac64%20GC%20Stress/7318

Original change's description:
> [turbofan] re-wire Unreachable to the graph end at EffectPhi's
> 
> This avoids the EffectControlLinearizer stumbling upon unreachable
> code.
> 
> Bug: chromium:958718
> Change-Id: I135c17813741e48e878a4624370eee1e06081031
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1605737
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61434}

TBR=jarin@chromium.org,tebbi@chromium.org

Change-Id: I85cf33f06617b15cdd435e2699ace99e532d26e2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:958718
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1607655
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61436}
2 files changed
tree: 5e01a6d244c75b1d6113fc3c1ed46c6421707a22
  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. .clang-tidy
  16. .editorconfig
  17. .git-blame-ignore-revs
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. .vpython
  22. .ycm_extra_conf.py
  23. AUTHORS
  24. BUILD.gn
  25. ChangeLog
  26. CODE_OF_CONDUCT.md
  27. codereview.settings
  28. DEPS
  29. LICENSE
  30. LICENSE.fdlibm
  31. LICENSE.strongtalk
  32. LICENSE.v8
  33. LICENSE.valgrind
  34. OWNERS
  35. PRESUBMIT.py
  36. README.md
  37. snapshot_toolchain.gni
  38. 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://v8.dev/docs

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 at v8.dev/docs/contribute.