SharedFunctionInfos store their original function literal's id. This is
also their index in the Script's SFI list.

The function literal id is only needed for lazy compilation and live edit,
and access only has to be fast in the former. So, we can move the SFI
function literal id field to UncompiledData, and if patching with live
edit, or discarding compiled code, we can perform a slower linear search
through the Script's SFI list.

This is a reland of
 1) https://chromium-review.googlesource.com/1082480 and
 2) https://chromium-review.googlesource.com/1128854
the differences being:
 1) caching the literal id on UncompiledData rather than always linearly
    searching the SFI list, and removing the unused runtime-liveedit.cc
    file instead of fixing it to support this change.
 2) clearing padding on UncompiledData now that it has 3 int32 fields,
    making its end unaligned on x64.

TBR=yangguo@chromium.org,marja@chromium.org,ulan@chromium.org,cbruni@chromium.org

Bug: chromium:818642
Change-Id: I58dcb12a2a60a680f662568da428e01189c62638
Reviewed-on: https://chromium-review.googlesource.com/1138325Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54473}

Since RO_SPACE objects can't move then IsDereferenceAllowed, just return
true for any objects in RO_SPACE.

R=leszeks

Bug: v8:7786
Change-Id: I67d2d8902a3c2196991bf57ba719c8b05220cdbb
Reviewed-on: https://chromium-review.googlesource.com/1138324Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54472}

This also fixes JSCreateLowering::ReduceJSCreate to use in-object
property count after slack tracking. This would still deserve some
more bullet-proof treatment; in particular, we should make it
somehow hard to access the pre-slack-tracking instance_size and
inobject_property_count (and possibly other things that might be
derived from the stale instance_size).

Bug: v8:7790
Change-Id: Ie374e5a030ec2fe000647e94d848ca0f9ee346f4
Reviewed-on: https://chromium-review.googlesource.com/1138235
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54471}

R=clemensh@chromium.org
BUG=v8:7424

Change-Id: I3055d4d98c108ce6e576f7171b8fae4e6b2c3948
Reviewed-on: https://chromium-review.googlesource.com/1131132
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54470}

This marks the following methods as V8_DEPRECATE_SOON and adds new
versions that take Isolate* as their first parameter:
PrimitiveArray::Set
PrimitiveArray::Get
StackTrace::GetFrame
String::Write
String::WriteOneByte
String::WriteUtf8
String::Concat
StringObject::New

Additionally StackFrameInfo, Module and TemplateInfo are marked as
NeverReadOnlySpaceObject so their GetIsolates calls are safe.

In api.cc, ContextFromHeapObject is split into
ContextFromNeverReadOnlySpaceObject and UnsafeContextFromHeapObject,
where the latter uses the deprecated methods but is only called from
methods that were themselves already marked V8_DEPRECATE_SOON.

Deprecation warnings for using HeapObject::GetHeap/GetIsolate are
suppressed for all the uses in V8_DEPRECATE_SOON methods so that stats
produced using tools/collect_deprecation_stats.sh don't show them.

Bug: v8:7786
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I48799b5599711661b14d0cd04f21a0a00322da4a
Reviewed-on: https://chromium-review.googlesource.com/1136641
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54469}

Bug: Chromium:841975
Change-Id: Ife77805fa3977dc874087ca7ae810eded2ae1c55
Reviewed-on: https://chromium-review.googlesource.com/1136986Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54468}

We used to have an optimized version for nodes that are concatenating
two strings which was allocating an object on the heap, therefore
preventing this code from being executed on the compiler thread.
Octane benchmark results show insignificant increase in performance
(< 0.5%) without this optimization - see
https://docs.google.com/spreadsheets/d/1MC5NrMoMSsqxZqw0ojoZvomBb7q2EOt1S0sFoJ8ld2c/edit?usp=sharing
which leads to the conclusion we can safely remove the optimization for now.

Bug: v8:7790
Change-Id: I6492c6a76118cac568d28805995d55c5360bb123
Reviewed-on: https://chromium-review.googlesource.com/1138246Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54467}

This reverts commit 1d4a1172.

Reason for revert: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/21989

Original change's description:
> [sfi] Remove SFI function literal id field
> 
> SharedFunctionInfos store their original function literal's id. This is
> also their index in the Script's SFI list.
> 
> The function literal id is only needed for lazy compilation and live edit,
> and access only has to be fast in the former. So, we can move the SFI
> function literal id field to UncompiledData, and if patching with live
> edit, or discarding compiled code, we can perform a slower linear search
> through the Script's SFI list.
> 
> This is a reland of
> https://chromium-review.googlesource.com/c/v8/v8/+/1082480
> but caching the literal id on UncompiledData rather than always linearly
> searching the SFI list. Also, removes the unused runtime-liveedit.cc file
> instead of fixing it to support this change.
> 
> Bug: chromium:818642
> Change-Id: I977bcca0dc72903ca476a7079d156cc8bbe88fde
> Reviewed-on: https://chromium-review.googlesource.com/1128854
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54464}

TBR=ulan@chromium.org,marja@chromium.org,yangguo@chromium.org,kozyatinskiy@chromium.org,cbruni@chromium.org,leszeks@chromium.org,verwaest@chromium.org

Change-Id: Icee5ee3ab7688b93e2963f91debed65a58164534
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:818642
Reviewed-on: https://chromium-review.googlesource.com/1138276Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54466}

- Log script sources with --log-function-events
- Don't show confusing duration in graphs
- Introduce separate compilation category
- Log script details after deserialization
- Log parse times for eval scripts
- Display deserialized scripts and functions

Change-Id: I58f3bf8efe3955632322f958716c36ad38761fd0
Bug: chromium:757467, chromium:850038
Reviewed-on: https://chromium-review.googlesource.com/1128082Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54465}

SharedFunctionInfos store their original function literal's id. This is
also their index in the Script's SFI list.

The function literal id is only needed for lazy compilation and live edit,
and access only has to be fast in the former. So, we can move the SFI
function literal id field to UncompiledData, and if patching with live
edit, or discarding compiled code, we can perform a slower linear search
through the Script's SFI list.

This is a reland of
https://chromium-review.googlesource.com/c/v8/v8/+/1082480
but caching the literal id on UncompiledData rather than always linearly
searching the SFI list. Also, removes the unused runtime-liveedit.cc file
instead of fixing it to support this change.

Bug: chromium:818642
Change-Id: I977bcca0dc72903ca476a7079d156cc8bbe88fde
Reviewed-on: https://chromium-review.googlesource.com/1128854Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54464}

Bug: v8:7790
Change-Id: Iba1c887897d17d75c4371b18f375983f7499120a
Reviewed-on: https://chromium-review.googlesource.com/1138075
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54463}

This is a reland of b7f0951f

Original change's description:
> [wasm] Add a separate CodeTracer to the WasmEngine.
> 
> This makes sure the TurboFan pipeline is independent of the Isolate by
> getting the CodeTracer from the WasmEngine for WebAssembly compilations.
> 
> R=clemensh@chromium.org
> 
> Change-Id: I343af1a2bfaeff77e2f41ef0c53fbfe165e2e202
> Reviewed-on: https://chromium-review.googlesource.com/1134997
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54455}

Change-Id: I48b161b5f35dd388fd3ef299afe04214a666b5a6
Reviewed-on: https://chromium-review.googlesource.com/1138114
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54462}

Bug: chromium:863362
Change-Id: I88896d7477d893f1b7fae08f6dfd5709748a6edd
Reviewed-on: https://chromium-review.googlesource.com/1138080Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54461}

R=bmeurer@chromium.org, ulan@chromium.org

Bug: chromium:680662
Change-Id: I5e1486ad2a42db2998d5485a0c4e711378678e6c
Reviewed-on: https://chromium-review.googlesource.com/1136034Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54460}

This reverts commit b7f0951f.

Reason for revert: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux64%20TSAN/21517

Original change's description:
> [wasm] Add a separate CodeTracer to the WasmEngine.
> 
> This makes sure the TurboFan pipeline is independent of the Isolate by
> getting the CodeTracer from the WasmEngine for WebAssembly compilations.
> 
> R=​clemensh@chromium.org
> 
> Change-Id: I343af1a2bfaeff77e2f41ef0c53fbfe165e2e202
> Reviewed-on: https://chromium-review.googlesource.com/1134997
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54455}

TBR=mstarzinger@chromium.org,clemensh@chromium.org

Change-Id: I5f69f12ab29dcb92e7b7f53632eb73a3abc1f6af
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/1138113Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54459}

This helps debugging wasm crashes. {WasmCompiledFrame::Print} should
also print the position inside the current function, additional to the
absolute position in the wasm module. The source positions encoded in
wasm code are also function-relative, so with the additional output
it's easier to match them.

R=ahaas@chromium.org

Change-Id: I40f99e75e3ba25fdfd24943ea96e49868b91844f
Reviewed-on: https://chromium-review.googlesource.com/1138053Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54458}

We convert this {ptr, size} pair to an ArrayBuffer::Allocation when we
need to free it anyway, so we can get rid of this intermediate step to
make things simpler.

Change-Id: I6e82949ec02acb5794f4d668afb2313ebdcb9d52
Reviewed-on: https://chromium-review.googlesource.com/1136309
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54457}

R=clemensh@chromium.org
TEST=mjsunit/wasm/worker-module

Change-Id: I56c274c67354d534f86312ee8fe7b7761da8ca44
Reviewed-on: https://chromium-review.googlesource.com/1138074Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54456}

This makes sure the TurboFan pipeline is independent of the Isolate by
getting the CodeTracer from the WasmEngine for WebAssembly compilations.

R=clemensh@chromium.org

Change-Id: I343af1a2bfaeff77e2f41ef0c53fbfe165e2e202
Reviewed-on: https://chromium-review.googlesource.com/1134997
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54455}

This CL adds inlining for the Number constructor if new.target is not
present. The lowering is BigInt compatible, i.e. it converts BigInts to
numbers.

Bug: v8:7904
Change-Id: If03b9f872d82e50b6ded7709069181c33dc44e82
Reviewed-on: https://chromium-review.googlesource.com/1118557
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54454}

This CL renames Constant to ExternConstant (this already happend in the
grammar). It also enforces the rule that such extern constants require
"constexpr" types.

Drive-by-change: Replaced non constexpr extern constants with
module constants.

R=tebbi@chromium.org

Bug: v8:7793
Change-Id: Icb3f75071b15b1fcabbe447941e05dd5a09d4b23
Reviewed-on: https://chromium-review.googlesource.com/1136434Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Simon Zünd <szuend@google.com>
Cr-Commit-Position: refs/heads/master@{#54453}

Bug: v8:7327
Change-Id: I96fa8f6c2dbc9fb3da0be9a8b8d730cc1d1e3415
Reviewed-on: https://chromium-review.googlesource.com/1131456
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54452}

R=clemensh@chromium.org

Change-Id: Iab7210eaddb14c9ca8638cbc8d69206bbaf15462
Reviewed-on: https://chromium-review.googlesource.com/1134785Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54451}

BUG=chromium:852765

Change-Id: Iaba84f6e52b08b3aee4c1529701239c049dceb9a
Reviewed-on: https://chromium-review.googlesource.com/1128875Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54450}

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/2f38df6..8d3925b

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: Iabf2679443822f70c058df0f23a5b90171b658bd
Reviewed-on: https://chromium-review.googlesource.com/1137926
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#54449}

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/579c986..2f38df6

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I0ffc30c9d1a4ee518fa9073e17c614902d70e6ad
Reviewed-on: https://chromium-review.googlesource.com/1137850Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#54448}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/7b4d0db..c0771e9

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/8495de1..be45355

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/882c91e..579c986

Rolling v8/third_party/fuchsia-sdk: https://chromium.googlesource.com/chromium/src/third_party/fuchsia-sdk/+log/272de12..8227701

Rolling v8/tools/luci-go: https://chromium.googlesource.com/chromium/src/tools/luci-go/+log/7edc822..abcd908

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I8b67be916591e6e98bb0ead58aca3c87a08b941d
Reviewed-on: https://chromium-review.googlesource.com/1137736
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#54447}

- Reorganizes shuffle tests into tabular form.
- Adds a test that composes random numbers of random shuffles to
  make new shuffles.
- Adds a test that generates functions to compute a complex expression
  consisting of shuffles, and compares interpreter results to compiled
  code results.
- Fixes a problem with temp register exhaustion on ARM 32-bit.
- Matches identity shuffles (returning first or second operand
  unchanged) and uses EmitIdentity() for these.

Bug: v8:6020
Change-Id: Ie41c14fee52a7406b1d32e731e050096400e12f5
Reviewed-on: https://chromium-review.googlesource.com/1119567
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54446}

R=bradnelson@chromium.org, titzer@chromium.org
CC=ahaas@chromium.org

No-Try: true
Change-Id: I0843b33f04861b8c829fac27231a39452db9f7a6
Reviewed-on: https://chromium-review.googlesource.com/1136443Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54445}

They are replaced by
- Memory.Experimental.Renderer2.V8
- Memory.Experimental.Renderer2.V8.AllocatedObjects

Bug: chromium:852415
Change-Id: I64285e5067304319acadc0d64a05aa553d8ae6e0
Reviewed-on: https://chromium-review.googlesource.com/1101197
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54444}

Bug: chromium:842083
Change-Id: I7f3d7cb64c1263e081d1f9bd36939aaf1a0e3da8
Reviewed-on: https://chromium-review.googlesource.com/1135322
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54443}

This reverts commit f0a9a6a5.

Reason for revert: Breaks V8 Android GN (dbg)
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Android%20GN%20%28dbg%29/12328

Original change's description:
> Update GN configs for v8_perf target to allow running perf tests in swarming
> 
> This will allow us to migrate our deprecated configs to android_docker.
> 
> R=​machenbach@chromium.org
> 
> Bug: chromium:838864
> Change-Id: I5f7db648520847aa2077e9fc2a5970e63daa9a50
> Reviewed-on: https://chromium-review.googlesource.com/1131944
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54441}

TBR=machenbach@chromium.org,sergiyb@chromium.org

Change-Id: I81ecd49ed69f2161931fce3836ba66462a101a25
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:838864
Reviewed-on: https://chromium-review.googlesource.com/1136716Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54442}

This will allow us to migrate our deprecated configs to android_docker.

R=machenbach@chromium.org

Bug: chromium:838864
Change-Id: I5f7db648520847aa2077e9fc2a5970e63daa9a50
Reviewed-on: https://chromium-review.googlesource.com/1131944Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54441}

Also remove an unnecessary AllowHandleDereference scope.

Bug: chromium:863155, v8:7790
Change-Id: I37a6efb0595d09ccf0a1e653620060a16fc96247
Reviewed-on: https://chromium-review.googlesource.com/1136444
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54440}

All auto-generated with some fix-ups including marking the following
classes as NeverReadOnlySpaceObject so their GetIsolate/GetHeap methods
are safe to use:
Code, CodeDataContainer, AbstractCode, DeoptimizationData,
CompilationCacheTable, NormalizedMapCache, Script, SharedFunctionInfo

TBR=yangguo@chromium.org

Bug: v8:7786
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I6cb5dcca88a0bc99b5afe80f553e06a661b5da3c
Reviewed-on: https://chromium-review.googlesource.com/1135306
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54439}

No need to define a function just to default-initialize all fields.

R=mstarzinger@chromium.org

Bug: v8:7754
Change-Id: I059f310d22435a364dff8b7cfcb68c6314412c9a
Reviewed-on: https://chromium-review.googlesource.com/1136306
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54438}

Bug: v8:7786
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I195d65ec77a838878db340599fc8a5de1c3e1324
Reviewed-on: https://chromium-review.googlesource.com/1135541Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54437}

The code under test is handling of multi-return values in TurboFan and
hence actually independent of WebAssembly. The only reason to generate
WasmCode is in order to use the WebAseembly linkages. This changes the
generated code to have {STUB} kind instead of {WASM_FUNCTION} kind to
avoid having stack checks in the generated code which would require a
proper WasmInstanceObject to be allocated.

R=ahaas@chromium.org
BUG=chromium:862508

Change-Id: I4feb7bff1a42bbf59cfc5f249f2e0585ce7011ad
Reviewed-on: https://chromium-review.googlesource.com/1136438Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54436}

This removes support to track the memory footprint of fully executed but
not yet finalized compilation units. It was used to throttle creation of
new tasks when the latent memory pressure of this unfinished jobs rose
above a certain threshold. Now that units no longer incur a significant
latent memory pressure, this is no longer needed.

R=clemensh@chromium.org
BUG=v8:7921

Change-Id: I3f4a563ebcb85b7aeac50f469a8a495eecf8aa3d
Reviewed-on: https://chromium-review.googlesource.com/1136291Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54435}

This adds trace events for Liftoff compilation, Turbofan compilation,
instantiation and running the start function. These are basic
operations that help to understand the startup behaviour of WebAssembly
modules.

R=ahaas@chromium.org

Change-Id: I0c0544cfd2d03de1783fa1d3a5897d3b8ef09e05
Reviewed-on: https://chromium-review.googlesource.com/1134768
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54434}