[wasm-simd] Add regression test for i64x2.shr_s bug

This test uses a i64x2.shr_s to shift a v128 with all bits set by 1,
resulting in v128 with all bits set (no change). This value is then
dropped, and param[2] (3), is returned.

Without the fix, -1 is returned, since i64x2.shr_s overwrites the
register for param[2] with 0xffffffff.

Bug: v8:10752
Bug: chromium:1111522
Change-Id: I0310bf6039be780a6738689069cdbcfa3a24bbdb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335779
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69233}
2 files changed
tree: f77966299ab7f0b6c15beaa221b6c2d37d9cf13b
  1. .clang-format
  2. .clang-tidy
  3. .editorconfig
  4. .flake8
  5. .git-blame-ignore-revs
  6. .gitattributes
  7. .gitignore
  8. .gn
  9. .vpython
  10. .ycm_extra_conf.py
  11. AUTHORS
  12. BUILD.gn
  13. CODE_OF_CONDUCT.md
  14. COMMON_OWNERS
  15. DEPS
  16. ENG_REVIEW_OWNERS
  17. INFRA_OWNERS
  18. INTL_OWNERS
  19. LICENSE
  20. LICENSE.fdlibm
  21. LICENSE.strongtalk
  22. LICENSE.v8
  23. LICENSE.valgrind
  24. MIPS_OWNERS
  25. OWNERS
  26. PPC_OWNERS
  27. PRESUBMIT.py
  28. README.md
  29. S390_OWNERS
  30. WATCHLISTS
  31. build_overrides/
  32. codereview.settings
  33. custom_deps/
  34. docs/
  35. gni/
  36. include/
  37. infra/
  38. samples/
  39. src/
  40. test/
  41. testing/
  42. third_party/
  43. tools/
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.