Remove the ambient dependency on the currently entered isolate, let the
embedder pass it in explicitly.

Bug: v8:11287
Change-Id: I03690390a308a59e2c6ea5c6ae268780d836b717
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2608209Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72105}

Port f9e76d6d

Original Commit Message:

    - Modify InstructionSelectors to track both padding and multiple
      slot values to correctly adjust stack pointers when pushing
      arguments. Pass stack offset as an immediate operand.
    - Modify CodeGenerators to handle alignment padding.

R=bbudge@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I639b6394f33e5e694882cb98c43b58edf5d93775
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629947Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72104}

This reverts commit 7fc1351b.

Reason for revert: creating new flakiness?
See https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN%20-%20isolates/13052

Original change's description:
> [wasm] Unskip a test
>
> Debugging with multiple isolates involved is fixed now, thus unskip the
> test.
>
> R=​thibaudm@chromium.org
>
> Bug: v8:10359, v8:10099
> Change-Id: I0134fe9da21c86dd40a559dbd4cf8c998a70be20
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629512
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72099}

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

Change-Id: Ie328a3af76ba2070cbd0971395d6414d48f4d973
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10359
Bug: v8:10099
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2630736Reviewed-by: Francis McCabe <fgm@chromium.org>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72103}

This reverts commit e38cb757.

Reason for revert: Test failing: https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket.appspot.com/8858103866497469056/+/steps/Check/0/logs/tier-down-to-liftoff/0

Original change's description:
> [turboprop] Enable tierup to TurboFan with FLAG_turboprop
>
> FLAG_turboprop was used to test the turboprop compiler without any
> further tierup to TurboFan. This cl changes:
> - FLAG_turboprop to also tier up to TurboFan.
> - Introduces FLAG_turboprop_as_toptier to continue running the
>   configuration without tierup.
> - Removes FLAG_turboprop_as_midtier which is same as FLAG_turboprop.
>
> Bug: v8:9684
> Change-Id: I487bda13d226434837770ecc43b3ced7c31ccf19
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2622214
> Commit-Queue: Mythri Alle <mythria@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72101}

TBR=rmcilroy@chromium.org,mythria@chromium.org,jgruber@chromium.org

Change-Id: Ic3e87c311fba001460e4f1561a2e5f74391a06a7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9684
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2630526Reviewed-by: Francis McCabe <fgm@chromium.org>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72102}

FLAG_turboprop was used to test the turboprop compiler without any
further tierup to TurboFan. This cl changes:
- FLAG_turboprop to also tier up to TurboFan.
- Introduces FLAG_turboprop_as_toptier to continue running the
  configuration without tierup.
- Removes FLAG_turboprop_as_midtier which is same as FLAG_turboprop.

Bug: v8:9684
Change-Id: I487bda13d226434837770ecc43b3ced7c31ccf19
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2622214
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72101}

This reverts commit 16e5dca3.

Reason for revert: https://chromium-review.googlesource.com/c/v8/v8/+/2565511 has to be reverted, and this was a follow-up to that

Original change's description:
> [compiler] Mark String as kNeverSerialized
>
> Bug: v8:7790
> Change-Id: I2deb462c3467f7239d55b0f295feed1de5ca1c2f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616198
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72010}

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

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

Bug: v8:7790
Change-Id: Ie8b628fc5d0b0d90637515d7d3a2f1a9f64a0a09
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629747Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72100}

Debugging with multiple isolates involved is fixed now, thus unskip the
test.

R=thibaudm@chromium.org

Bug: v8:10359, v8:10099
Change-Id: I0134fe9da21c86dd40a559dbd4cf8c998a70be20
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629512Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72099}

R=clemensb@chromium.org

Bug: v8:10994
Change-Id: I2145559f6b9f4d378a0b8c063133e8d59b7ce4d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629510Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72098}

This reverts commit 73875e95.

Reason for revert: https://chromium-review.googlesource.com/c/v8/v8/+/2565511 has to be reverted, and this was a follow-up to that

Original change's description:
> [compiler] Mark Name as kNeverSerialized
>
> Bug: v8:7790
> Change-Id: I44469e08131ad6a5f95a465cf2d461da0785221e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616218
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72012}

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

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

Bug: v8:7790
Change-Id: I300c7050522de3c5f44cb4466e87f3388f221725
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627603Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72097}

Bug: v8:11181
Change-Id: I8ca8b7249ef660874da761c11f192ffd06748ff5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2558219
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72096}

Offsets in regular expressions are limited to 16 bits.
It was possible to exceed this limit when emitting greedy loops where
the length of text nodes exceeded 16 bits, resulting in overflowing
offsets.
With this CL we throw a SyntaxError "Regular expression too large" to
prevent this overflow.

Bug: chromium:1166138
Change-Id: Ica624a243bf9827083ff883d9a976f13c8da02e5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629286
Commit-Queue: Patrick Thier <pthier@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72095}

Changes:
- Add --wasm-loop-unrolling flag. Everything in this CL happens behind
  this flag.
- In decoding, DoReturn does not take returned values as an argument.
  It is now the responsibility of graph-builder-interface.cc to extract
  these values. Note that this is what was already happening in Liftoff.
- In pipeline.cc, add phase to remove loop exits after generating the
  turbofan graph.
- Explicitly disallow calling FallThruTo() on loops.
- Add loop assignments and loop header node to Control type in
  graph-builder-interface.cc. Assign them in Loop().
- Main change: Add loop exit nodes to wasm-generated graphs. For
  details, consult this design doc: https://docs.google.com/document/d/1AsUCqslMUB6fLdnGq0ZoPk2kn50jIJAWAL77lKXXP5g
- Inline PrepareForLoop().

Bug: v8:11298
Change-Id: I65058f1b5df3f862f4a62f4dcb0bd7e1f1dcf4ee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2621082
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72094}

This means that targets like pdfium don't have to manually set up the
include dir.

Bug: v8:11292
Change-Id: Idde914592a86f2f5a3fc5cf97060d5650467cc7a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629280
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72093}

Port: e14de8b9

Bug: v8:10971
Change-Id: Ia193010133ffc4ac49268ed095cdda8f7b732234
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629110
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72092}

TBR=vahl@chromium.org

Change-Id: I4a1ebf06681f7618392b8d4915396e6edaf5dc10
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629277Reviewed-by: Lutz Vahl <vahl@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Lutz Vahl <vahl@chromium.org>
Auto-Submit: Lutz Vahl <vahl@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72091}

Adds support for Member<const T> by keeping the untyped storage in
MemberBase const, which is stronger than the required constness. All
accesses go through BasicMember which can re-add the appropriate
constness specified by the user.

The same concept is applied to all Member and Persistent handles.

Bug: chromium:1056170
Change-Id: I5a620258be3acb6a1b4b1437e69b8d7d1ec5ce6f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625871Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72090}

The wrappers target currently only has one header. Marking it as source
set created trouble on Windows and Mac builders.

Bug: v8:11303
Change-Id: I228d49c4150eb089e8494555886072b237b95940
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626855Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: John Xu <johnx@google.com>
Cr-Commit-Position: refs/heads/master@{#72089}

This is a reland of 164cf80b

The reland fixes UB (left-shift of negative integer type) with a
static_cast<uint32_t>.

Original change's description:
> [regexp] Hard-crash on invalid offsets in AdvanceCurrentPosition
>
> Drive-by: Range checks in `Emit(byte, twenty_four_bits)` to ensure the
> given packed bits actually fit into 24 bits.
>
> Bug: chromium:1166138
> Change-Id: I2e711e6466bb48d7b9897f68dfe621d12bd92508
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625877
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Auto-Submit: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72064}

Tbr: leszeks@chromium.org
Bug: chromium:1166138
Change-Id: I514495e14bb99dfc9588fdb4a9f35d67d8d64acb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626663Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72088}

Prototype load lane instructions on ARM64 Liftoff.

We extract a helper function that will convert a MemOperand that uses a
register offset or a non-zero immediate offset, into a MemOperand that
uses a temporary to store base+offset and immediate offset of 0. Some
instructions, ld1r or ld1 don't support offset, and will use this helper
to get the correct MemOperand.

Bug: v8:10975
Change-Id: I89d133af7a706a49985db36ca044ac8956c6e1d5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2614171
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72087}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/787a10d..d64e599

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/3889691..178c01b

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/8149a96..64d94de

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

Change-Id: I9827b870666a957cf9414093662c1581ccbfcac5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2628620Reviewed-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@{#72086}

Bug: v8:10997
Change-Id: Ibfdedffd1cfaffeb5a7a479a37bb474fc155944b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2621854Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72085}

Port: d6c4c884

Bug: v8:10997
Change-Id: I9659b28988ef8528a1d558e3d1334a54c5bf3b58
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2624101
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72084}

Bug: v8:11217
Change-Id: Ic58b0ac90fa227cadc35829bd1e5629f6749020a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616102
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72083}

Change-Id: Id58c36aac216a9edc0d0ce86bd830d3822673102
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625778Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72082}

Change-Id: I46d7d6e876351ddd75224090d9645877d1cb244b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627868Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72081}

kS390_Push will also reserve the needed space on the stack
so there is no need for StackClaim anymore.

Change-Id: I0f7f410d7dbd8ec880335fcbdf29f492d3dd3858
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627867Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72080}

This reverts commit 2f3cda58.

Reason for revert: Failing tests on V8 Linux - arm64 - sim - MSAN
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/36207?

Original change's description:
> [compiler] Rework calculation to start of return slots
>
> - Changes GetOffsetToReturns to take into account return slot padding
>   and argument padding.
> - Changes GetStackParameterDelta to use GetOffsetToReturns for the SP
>   delta calculation.
> - Removes GetFirstUnusedStackSlot.
>
> Change-Id: I13df72e86750c62798bae262f0560cf1d7f981db
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593306
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72078}

TBR=bbudge@chromium.org,neis@chromium.org,ahaas@chromium.org

Change-Id: I2b35efcd27a5677ed56cff5c4096ccc91fd18209
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627910Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72079}

- Changes GetOffsetToReturns to take into account return slot padding
  and argument padding.
- Changes GetStackParameterDelta to use GetOffsetToReturns for the SP
  delta calculation.
- Removes GetFirstUnusedStackSlot.

Change-Id: I13df72e86750c62798bae262f0560cf1d7f981db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593306
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72078}

This CL prepares the WasmModuleBuilder for memory64 and adds a first
mjsunit test which executes a few memory loads and stores, some of them
trapping.

R=manoskouk@chromium.org

Bug: v8:10949
Change-Id: Ia77c32ff0ee774665cd4bd0997c3609f6f17b80f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589974
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72077}

Drive-by-fix: Sort forward declarations in v8.h

Bug: v8:11263
Change-Id: I2d1b5324e0cddd54a1bec440e1aebcebef393a6d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2581958
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72076}

Implement coverage tracking for optional chains.

Bug: v8:10060
Change-Id: I4f29eda64b6d859939f5f58f4fabead649905795
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2573013Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Gus Caplan <snek@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Benjamin Coe <bencoe@google.com>
Cr-Commit-Position: refs/heads/master@{#72075}

Implement these 4 instructions for arm64 and arm Liftoff:
- i64x2.widen_low_i32x4_s
- i64x2.widen_high_i32x4_s
- i64x2.widen_low_i32x4_u
- i64x2.widen_high_i32x4_u

Drive-by cleanup of the test case to make it clearer that we are
checking against an unsigned result.

Bug: v8:10972
Change-Id: I509a8df8a6f2109417ad5aaaa0324ced50bdc84a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626713Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72074}

Ext mul's codegen assumes that all inputs are in registers, but the
instruction-selector wasn't the correct constraints. The codegen for ext
mul is slightly complicated so we chose to restrict the inputs to be
registers rather than changing codegen.

Bug: chromium:1165966,v8:11262
Change-Id: I5d4eb56d17a4d0a2927b089dbf74362c7e7ff4fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626711Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72073}

Bug: v8:10971
Change-Id: I5650458501f548f8120bcc15fbeb9cd220e3e137
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2621861
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72072}

Change-Id: Iec2fdaf3f180e6e59e40a558bf85a41cd96826ee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626464Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72071}

Port 8c52f66f

Original Commit Message:

    Implement these 4 instructions for x64 Liftoff:
    - i64x2.widen_low_i32x4_s
    - i64x2.widen_high_i32x4_s
    - i64x2.widen_low_i32x4_u
    - i64x2.widen_high_i32x4_u

    We move the codegen for the *high* instructions into macro-assembler to
    allow sharing of the optimized code sequence between TurboFan and
    Liftoff.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I790860cbb0f9854c31959684712cde42254bde2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625878Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72070}

Port 6f521386

Original Commit Message:

    Create a macro-assembler helper function to enable code sharing between
    Liftoff and TurboFan.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I3e72ad3a2d7dfdd9737a5acd2416741c1d486306
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625880Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72069}

Bug: chromium:1165806
Change-Id: Id637bb8ca2736a7a1430b3115ac48629ca1e8a36
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627309
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Auto-Submit: Liviu Rau <liviurau@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72068}

Create a macro-assembler helper function to enable code sharing between
Liftoff and TurboFan.

Bug: v8:10971
Change-Id: I8d8132f4cf3386b28cdf5350fde2e076428d68c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2621860
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72067}

When merging a bundle with itself, we should consider the merge a
success even though we do not merge anything. The result is used to
determine whether the backward spilling heuristic might introduce a
stack to stack move. For this purpose, it only matters whether the phi
and its input end up in the same bundle.

R=sigurds@chromium.org

Bug: chromium:1158088
Change-Id: Icdcfe81d58bce5916b87a34a46c9611f5978bf27
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625876Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72066}