Reland of Turbofan: Add MachineOperators for SIMD. (patchset #1 id:1 of https://codereview.chromium.org/1850373002/ )

Reason for revert:
Revert didn't help. Still we need to figure out what bothers the msan build.

Original issue's description:
> Revert of Turbofan: Add MachineOperators for SIMD. (patchset #5 id:70001 of https://codereview.chromium.org/1848433003/ )
>
> Reason for revert:
> [Sheriff] Speculative revert. Compile now times out on msan:
> https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/7705
>
> Original issue's description:
> > Turbofan: Add MachineOperators for SIMD.
> >
> > Takes the SIMD runtime intrinsics as a starting point for defining TF machine operators. The rationale for omitting functions is:
> >
> >  - UInt constructors. int and uint aren't distinguished in wasm.
> >  - Check functions.
> >  - 'FromXxxBits' functions. These are essentially casts.
> >  - Simple Load / Store functions. Existing load / store with SIMD type should work.
> >  - Uint functions, except where their behavior is bitwise different from the Int function.
> >
> > Skipped fns:
> >
> > Float32x4Check
> > Float32x4FromInt32x4Bits
> > Float32x4FromUint32x4Bits
> > Float32x4FromInt16x8Bits
> > Float32x4FromUint16x8Bits
> > Float32x4FromInt8x16Bits
> > Float32x4FromUint8x16Bits
> > Float32x4Load
> > Float32x4Store
> >
> > Int32x4Check
> > Int32x4FromUint32x4
> > Int32x4FromFloat32x4Bits
> > Int32x4FromUint32x4Bits
> > Int32x4FromInt16x8Bits
> > Int32x4FromUint16x8Bits
> > Int32x4FromInt8x16Bits
> > Int32x4FromUint8x16Bits
> > Int32x4Load
> > Int32x4Store
> >
> > CreateUint32x4
> > Uint32x4Check
> > Uint32x4ExtractLane
> > Uint32x4ReplaceLane
> > Uint32x4Add
> > Uint32x4Sub
> > Uint32x4Mul
> > Uint32x4And
> > Uint32x4Or
> > Uint32x4Xor
> > Uint32x4Not
> > Uint32x4Equal
> > Uint32x4NotEqual
> > Uint32x4Select
> > Uint32x4Swizzle
> > Uint32x4Shuffle
> > Uint32x4FromInt32x4
> > Uint32x4FromFloat32x4Bits
> > Uint32x4FromInt32x4Bits
> > Uint32x4FromInt16x8Bits
> > Uint32x4FromUint16x8Bits
> > Uint32x4FromInt8x16Bits
> > Uint32x4FromUint8x16Bits
> > Uint32x4Load
> > Uint32x4Load1
> > Uint32x4Load2
> > Uint32x4Load3
> > Uint32x4Store
> > Uint32x4Store1
> > Uint32x4Store2
> > Uint32x4Store3
> >
> > Bool32x4Check
> >
> > Int16x8Check
> > Int16x8FromUint16x8
> > Int16x8FromFloat32x4Bits
> > Int16x8FromInt32x4Bits
> > Int16x8FromUint32x4Bits
> > Int16x8FromUint16x8Bits
> > Int16x8FromInt8x16Bits
> > Int16x8FromUint8x16Bits
> > Int16x8Load
> > Int16x8Store
> >
> > CreateUint16x8
> > Uint16x8Check
> > Uint16x8ExtractLane
> > Uint16x8ReplaceLane
> > Uint16x8Add
> > Uint16x8Sub
> > Uint16x8Mul
> > Uint16x8And
> > Uint16x8Or
> > Uint16x8Xor
> > Uint16x8Not
> > Uint16x8Equal
> > Uint16x8NotEqual
> > Uint16x8Select
> > Uint16x8Swizzle
> > Uint16x8Shuffle
> > Uint16x8FromInt16x8
> > Uint16x8FromFloat32x4Bits
> > Uint16x8FromInt32x4Bits
> > Uint16x8FromUint32x4Bits
> > Uint16x8FromInt16x8Bits
> > Uint16x8FromInt8x16Bits
> > Uint16x8FromUint8x16Bits
> > Uint16x8Load
> > Uint16x8Store
> >
> > Bool16x8Check
> >
> > Int8x16Check
> > Int8x16FromUint8x16
> > Int8x16FromFloat32x4Bits
> > Int8x16FromInt32x4Bits
> > Int8x16FromUint32x4Bits
> > Int8x16FromInt16x8Bits
> > Int8x16FromUint16x8Bits
> > Int8x16FromUint8x16Bits
> > Int8x16Load
> > Int8x16Store
> >
> > CreateUint8x16
> > Uint8x16Check
> > Uint8x16ExtractLane
> > Uint8x16ReplaceLane
> > Uint8x16Add
> > Uint8x16Sub
> > Uint8x16Mul
> > Uint8x16And
> > Uint8x16Or
> > Uint8x16Xor
> > Uint8x16Not
> > Uint8x16Equal
> > Uint8x16NotEqual
> > Uint8x16Select
> > Uint8x16Swizzle
> > Uint8x16Shuffle
> > Uint8x16FromInt8x16
> > Uint8x16FromFloat32x4Bits
> > Uint8x16FromInt32x4Bits
> > Uint8x16FromUint32x4Bits
> > Uint8x16FromInt16x8Bits
> > Uint8x16FromUint16x8Bits
> > Uint8x16FromInt8x16Bits
> > Uint8x16Load
> > Uint8x16Store
> >
> > Bool8x16Check
> >
> > LOG=N
> > BUG=v8:4124
> >
> > Committed: https://crrev.com/3831d41e4ce7b162775732cb6ac1f8139e60aa30
> > Cr-Commit-Position: refs/heads/master@{#35213}
>
> TBR=bradnelson@chromium.org,gdeepti@chromium.org,titzer@chromium.org,mtrofin@chromium.org,bradnelson@google.com,bmeurer@chromium.org,bbudge@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:4124
>
> Committed: https://crrev.com/8481ec6016992e0b9ffb70137e9ff8fcd4135bba
> Cr-Commit-Position: refs/heads/master@{#35220}

TBR=bradnelson@chromium.org,gdeepti@chromium.org,titzer@chromium.org,mtrofin@chromium.org,bradnelson@google.com,bmeurer@chromium.org,bbudge@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124

Review URL: https://codereview.chromium.org/1850383002

Cr-Commit-Position: refs/heads/master@{#35221}
5 files changed
tree: 8e0ff0221cbe4b7baf1ab46adcd35cedbdf4baa2
  1. benchmarks/
  2. build/
  3. docs/
  4. include/
  5. infra/
  6. samples/
  7. src/
  8. test/
  9. testing/
  10. third_party/
  11. tools/
  12. .clang-format
  13. .gitignore
  14. .ycm_extra_conf.py
  15. AUTHORS
  16. BUILD.gn
  17. ChangeLog
  18. CODE_OF_CONDUCT.md
  19. codereview.settings
  20. DEPS
  21. LICENSE
  22. LICENSE.strongtalk
  23. LICENSE.v8
  24. LICENSE.valgrind
  25. Makefile
  26. Makefile.android
  27. Makefile.nacl
  28. OWNERS
  29. PRESUBMIT.py
  30. README.md
  31. snapshot_toolchain.gni
  32. 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.