Codegen is identical to x64.

Tweaked a macro definition to do a dst == src1 check when AVX is not
supported, and updated a single caller in LiftOff.

Bug: v8:11086
Change-Id: Ic9645f3d1bf1c26a1aa6db6bc2fa67fc991f8bbb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2579928
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71756}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/b0341eb..bd6da36

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/0991ca1..f22b977

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/99399ca..867d99d

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I708c6e8a9bcf2c5025864a67d30d762e667d7abe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2591878Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#71755}

Code like:

  x = wasm_v32x4_shuffle(x, x, 1, 2, 3, 0);

is currently matched by S8x16Concat, which lowers to two instructions:

  movapd xmm_dst, xmm_src
  palignr xmm_dst, xmm_src, 0x4

There is a special case after a S8x16Concat is matched:.

- is_swizzle, the inputs are the same
- it is a 32x4 shuffle (offset % 4 == 0)

Which can have a better codegen:

- (dst == src) shufps dst, src, 0b00111001
- (dst != src) pshufd dst, src, 0b00111001

Add a new simd shuffle matcher which will match 32x4 rotate, and
construct the appropriate indices referring to the 32x4 elements.

pshufd for the given example. However, this matching happens after
S8x16Concat, so we get the palignr first. We could move the pattern
matching cases around, but it will lead to some cases where
where it would have matched a S8x16Concat, but now matches a
S32x4shuffle instead, leading to worse codegen.

Note: we also pattern match on 32x4Swizzle, which correctly generates
Change-Id: Ie3aca53bbc06826be2cf49632de4c24ec73d0a9a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589062Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71754}

https://chromium.googlesource.com/external/github.com/tc39/test262/+log/36d2d2d34..51666c531

Bug: v8:7834, v8:5327, v8:10961
Change-Id: Ia589407e4c9e8be8732ce4940c2e3c578584cebb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2590518Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71753}

cl to land chrome/src/DEPS in https://chromium-review.googlesource.com/c/chromium/src/+/2591229

Bug: v8:11039
Change-Id: If2a8256011865a1d8cca700fd803905d6e63afde
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2590516Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71752}

pextrq + movq crosses register files twice, which is not efficient.

Optimize this by:
- checking if lane 0, do nothing if dst == src (macro-assembler helper)
- use vmovhlps on AVX, with src as the operands to avoid false
dependency on dst
- use movhlps otherwise, this is shorter than shufpd, and faster on
older system

Change-Id: I3486d87224c048b3229c2f92359b8b8e6d5fd025
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589056
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71751}

Drive-by fix IWYU for instruction-scheduler-ia32.cc.

Bug: v8:11217,v8:7490
Change-Id: I7ae4fdaf3c48274e9421e6b31897ad0ea1464876
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2585254Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71750}

This reverts commit bee5992a.

Reason for revert: TSAN unhappiness https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN/34656/overview

Original change's description:
> [wasm-gc] Initial Liftoff support
>
> This CL implements Liftoff support for struct.get/set,
> struct.new_with_rtt, rtt.canon, and ref.is_null, which
> is enough to make the first testcase pass.
>
> Bug: v8:7748
> Change-Id: Id09e9872d2126127192c852b3cb6d57ff9417582
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584951
> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71744}

TBR=jkummerow@chromium.org,clemensb@chromium.org

Change-Id: I1801c50861d74b7733ed828d6874f874fe8ba670
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7748
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2590674Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71749}

Change the codegen for f32x4.extract_lane from shufps to insertps. They
have the same performance, but shufps has a false dependency on dst (it
shuffles dst and src, but we don't care about dst at all).

We then merge the SSE and AVX opcode.

Bug: v8:11217
Change-Id: I7cdbf486573ce3a19881df84400a9c7e09c3ee48
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2585259Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71748}

Change the codegen for f32x4.extract_lane from shufps to insertps when
AVX is supported. They have the same performance, but shufps has a false
dependency on dst (it shuffles dst and src, but we don't care about dst
at all).

Also for SSE, extractps + movd crosses register files, so change it to
use insertps as well.

Change-Id: Idf45849d37ac3499bf3371ba2fa6ae05829aa8a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589048
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71747}

This is the same as the original implementation in https://crrev.com/c/2567534
which was speculatively reverted due to flaky tests. Since then, there have
been some changes to fix those tests, so trying to get this in again.

Bug: v8:11002
Change-Id: I5bd0f63d3aec4cf6db403b35737f8b695b0f4e37
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589063Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71746}

Change-Id: I669eaed12f352398b8e34b1f74262f46562745cb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2591047Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71745}

This CL implements Liftoff support for struct.get/set,
struct.new_with_rtt, rtt.canon, and ref.is_null, which
is enough to make the first testcase pass.

Bug: v8:7748
Change-Id: Id09e9872d2126127192c852b3cb6d57ff9417582
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584951
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71744}

Bug: chromium:1157692
Bug: chromium:1157386
Change-Id: I3525c5ea648bca6c2fb03bb910dbe9d673996da7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2587603
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71743}

The original implementation of matching was a RegExp on the source
which wasn't able to reliably distinguish between comments inside
of string literals and actual comments. For that reason, it had
a special rule to disallow quotes to remove false positives.

Original comment:
> Also, ['"] are excluded from allowed URLs to  avoid matches
> against sources that invoke evals with sourceURL.

After the code was moved into the scanner, that shouldn't be an
issue anymore - the scanner knows that this is a real comment and
isn't part of a string literal.

Allowing quotes enables a slightly smaller encoding of source maps,
specifically in the case where there are no sourceContents:
Non-base64 source maps can get away with effectively no encoding
overhead (they typically don't contain whitespace).

Change-Id: Iffa5df28d80656fa56e603e7c0e57aa1f44d0014
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2576801Reviewed-by: Marja Hölttä <marja@chromium.org>
Auto-Submit: Jan Krems <jankrems@google.com>
Commit-Queue: Jan Krems <jankrems@google.com>
Cr-Commit-Position: refs/heads/master@{#71742}

Only process each LiveRangeBundle once in AssignSpillSlots().

Previously we would try to merge a LiveRangeBundle as many times as
there are LiveRanges inside it. Even though the merge would only happen
once, we would still iterate over all LiveRanges and do expensive checks
for each iteration.

R=sigurds@chromium.org

Bug: v8:11237
Change-Id: I9e613aaf5e571d4c28486dd2c20154336c533563
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584956
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71741}

Change-Id: Id6975d47665832feee23c528f457092385a5ec3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584958Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71740}

- Allow hiding individual timeline-tracks to clear up screen space.
- Auto-hide timeline-tracks when there are no entries

Bug: v8:10644
Change-Id: Ibde37242fa1fcb827ca176ee7576a23715c45bda
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584954Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71739}

This reverts commit 8ffbf0d2.

Reason for revert: https://bugs.chromium.org/p/chromium/issues/detail?id=1158322

Original change's description:
> [TurboFan] Move SFI and BytecodeArray to kNeverSerialized
>
> This CL moves SharedFunctionInfo and BytecodeArray to the
> kNeverSerialized classes, making them directly accessible from the
> background thread.
>
> To resolve the dependence on HeapNumber and BigInt objects stored in
> the BytecodeArray's constant pool, this CL introduces a new
> ObjectDataKind::kPossiblyBackgroundSerializedHeapObject, which allows
> for objects to be serialized lazily from the background thread where
> we know that this is safe (e.g. because they are constant). BigInt and
> HeapNumber are the first members of this new group of objects.
>
> Bug: v8:7790
> Change-Id: I1d962d1cb7c36cc3f5baeb9603d5298f32af3363
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567705
> Reviewed-by: Georg Neis (ooo until January 5) <neis@chromium.org>
> Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71716}

TBR=neis@chromium.org,nicohartmann@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:7790
Change-Id: Ice35d7c1c4d7e96be887a0aa26fbfa69db627022
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589734Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71738}

Change-Id: I232585076ecf6a824cdbe2e989eadaf96adcc1d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2587241Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71737}

Change-Id: I9ee0113cf28b8f4c25a73b970877e5353cbf2076
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2586151Reviewed-by: Milad Fa <mfarazma@redhat.com>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71736}

Simd128Registers::names_ is also removed as the stringification
will be done by DEFINE_REGISTER_NAMES.

PPC FP and Vector Register (VR and VSR) Layou:

VR0 is VSR32 and goes all the way to VSR63 which is used by V8 Vector
operations.

VSR[0]0 - FPR[0]                     VSR[0]128
  |
  |
  |
VSR[31] - FPR[31]
VSR[32] - VR[0]                      VR[0]128
  |
  |
  |
  V
VSR[63] - VR[31]

Change-Id: Ied2a530b08d1eb40af59ce44f848d638f2a6dc9f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2587356Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71735}

Port: 6dbc2b01

Bug: v8:10975

Change-Id: Id3e70dda9f71ecf333890e70d6a5e64ed5a91ccf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2575731Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Auto-Submit: Liu yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#71734}

Switch from an array of supported types to a switch over
type kinds, in preparation for user-defined reference types.

Bug: v8:7748
Change-Id: I17a0a71184ee0937748f07f22c1fd545a057fb6e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584950
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71733}

Associate DeoptLogEntry with both, the function's source position and
the deopt location's source position.

Also fixes the list-panel click handler to support all clickable entry
types.

Bug: v8:10644, v8:10754
Change-Id: If10272a926d5dad10b29322e237610900715b9dd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584955
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71732}

- Show selection tab-bar
- Hide panels on empty timeline
- Fix legend position in ic list-panel

Bug: v8:10644
Change-Id: I4ef09627ed4de8682adb60f88be38867bc91640d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584953Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71731}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/62841ca..b0341eb

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I819de0f3557de321ad8426eb7205bce56f4b4196
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2588956Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#71730}

Drive-by cleanup: IWYU for macro-assembler-ia32.cc.

IWYU added src/heap/basic-memory-chunk.h which failed a presubmit, so I
updated src/DEPS to allow for including it.

Bug: v8:11217,v8:7490
Change-Id: I63662bfb2b34e354e94f6052edfcb92f1341da58
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2583675Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71729}

Drive-by cleanup: IWYU for macro-assembler-ia32.h and
instruction-selector-ia32.cc

Ran using `iwyu_tool.py -p out/ia32.debug <filename>`, with a local
build of llvm and iwyu.

Bug: v8:11217,v8:7490
Change-Id: I4f8e95fa9be2f51f6764c994bb4da9ae86854c4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2583671Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71728}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/11901ee..62841ca

Rolling v8/third_party/aemu-linux-x64: VSu8Vtf9AtE1W0EtQ4GMhLufzBudMRrz3_8vRSuj0O4C..ijHjc7kfgeuh7rvjQtk93a5SuvO23dABp_CeotpPcMAC

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I9ab3d4ef52ac1a8edcf8f18b7fc6786de0da66bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2588394Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#71727}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/026aa68..11901ee

Rolling v8/third_party/aemu-linux-x64: 5qqsaI1HWopoPDYdsXSJnZ-4w5bARXjJgFX_oohbDqIC..VSu8Vtf9AtE1W0EtQ4GMhLufzBudMRrz3_8vRSuj0O4C

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/d5e2194..0991ca1

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/c94b21d..99399ca

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: Iff37157907d9d7a0fc8c28fbd839ffc9695da4f1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2587792Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#71726}

Change-Id: I083a15e0a25668e149f832477c9bef0963993696
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2587353Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71725}

Change-Id: I59c905182294dc4e8fb8caf03f10ea66d332e034
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2586153Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71724}

Change-Id: Id9a8f9d7a7ccf7dc85a140ed3da30f429fc073ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2587008Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71723}

PPC has a set of 64 Vector Registers called VSX.
The lower 32 of them are shared with Floating Point register (only
64 bit of the registers are used for FP operations).

The upper 32 registers are VR registers which are only used for
VMX Vector operations.

VSX Vector operations have the option to use the lower 32 or upper
32 registers using the TX bit set on the instructions. VMX operations
only use the upper 32 registers.

In V8 we always set the VSX TX bit to "1" to make sure all the vector
operations take place on the upper 32 registers.

Change-Id: Ib3ea03254cbdc9547c3b698fe19c0c6b28138741
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2585260
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71722}

This flag disables the implicit fallback to Turbofan when
Liftoff bails out due to an unsupported instruction/type.
Instead, Liftoff bailouts are treated as fatal errors.

This is meant for testing; it is not (yet?) a configuration
we support in production.

Change-Id: I04e2045f1976e202e65da0ba8e8d660c47859bf4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584949Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71721}

Change-Id: I6d7e263b84d6871cb13cb01b2b51299b9249d961
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2586994Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71720}

The rest of the code base was already migrated last year in
https://crrev.com/c/1631409. In the API we have to be more careful to
not break embedders. According to the standard there is no semantic
difference between typedef and using ([decl.typedef#2]):
  A typedef-name can also be introduced by an alias-declaration. The
  identifier following the using keyword becomes a typedef-name and the
  optional attribute-specifier-seq following the identifier appertains
  to that typedef-name. Such a typedef-name has the same semantics as if
  it were introduced by the typedef specifier.

Thus this CL replaces all typedefs in include/v8.h by the equivalent
using declaration. This improves readability, especially for function
pointer types.

R=ulan@chromium.org
CC=leszeks@chromium.org

Bug: v8:11074
Change-Id: Id917b6aa5c8cd289c60bda5da1e3667e747936e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2563880
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71719}

The name has very few uses. I found at least one where the current
value does not make sense (on js-to-wasm wrappers in profiling), but I
found zero uses that were actually useful.

Hence this CL removes the name, i.e. just sets none on wasm scripts.

R=thibaudm@chromium.org, yangguo@chromium.org

Bug: chromium:1125986
Change-Id: I2f793986a3da905980132cd09349dd6a1d787957
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584245
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71718}

Change-Id: I9761b80f32beeb53e466fc67ee1c535075e4225c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2586993Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71717}