This reverts commit 1685b5d2.

Reason for revert: Was probably caused by infra change:
https://crrev.com/c/845781

Original change's description:
> Revert "[test] Move has unexpected output to outproc."
> 
> This reverts commit 71605b3e.
> 
> Reason for revert: Seems to break static-initializers step:
> https://build.chromium.org/p/client.v8/builders/V8%20Linux64/builds/22156
> 
> Original change's description:
> > [test] Move has unexpected output to outproc.
> > 
> > Expected outcomes optimized to serialize [PASS] as None.
> > 
> > Keeping expected outcomes inside output processors should be
> > optimized in the future. Few possible optimizations:
> > - separate classes for tests that are expected to PASS - done as
> > an example in mozilla test suite.
> > - cache output processors inside testcase.
> > - share output processors between copies of the same test - needs
> > some updates to the create_variant to update outproc only if
> > expected outcomes changed.
> > 
> > Bug: v8:6917
> > Change-Id: Ie73f1dcdf17fdfc65bce27228f818b1dd1e420c9
> > Reviewed-on: https://chromium-review.googlesource.com/843025
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#50347}
> 
> TBR=machenbach@chromium.org,sergiyb@chromium.org,majeski@google.com
> 
> Change-Id: Ice1f3aee0a26f7f38996459d38fd6e0bd964113d
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:6917
> Reviewed-on: https://chromium-review.googlesource.com/849572
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50348}

TBR=bbudge@chromium.org,machenbach@chromium.org,sergiyb@chromium.org,majeski@google.com

Change-Id: I7a522b6487de6e96985d223524533493eb9171f0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6917
Reviewed-on: https://chromium-review.googlesource.com/848975Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50350}

The missing regression test for
https://chromium-review.googlesource.com/c/v8/v8/+/847011

Bug: chromium:796041
Change-Id: I3d791d6485221d2fa68def2c7be96c48822aa651
Reviewed-on: https://chromium-review.googlesource.com/848995Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50349}

This reverts commit 71605b3e.

Reason for revert: Seems to break static-initializers step:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64/builds/22156

Original change's description:
> [test] Move has unexpected output to outproc.
> 
> Expected outcomes optimized to serialize [PASS] as None.
> 
> Keeping expected outcomes inside output processors should be
> optimized in the future. Few possible optimizations:
> - separate classes for tests that are expected to PASS - done as
> an example in mozilla test suite.
> - cache output processors inside testcase.
> - share output processors between copies of the same test - needs
> some updates to the create_variant to update outproc only if
> expected outcomes changed.
> 
> Bug: v8:6917
> Change-Id: Ie73f1dcdf17fdfc65bce27228f818b1dd1e420c9
> Reviewed-on: https://chromium-review.googlesource.com/843025
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50347}

TBR=machenbach@chromium.org,sergiyb@chromium.org,majeski@google.com

Change-Id: Ice1f3aee0a26f7f38996459d38fd6e0bd964113d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6917
Reviewed-on: https://chromium-review.googlesource.com/849572Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50348}

Expected outcomes optimized to serialize [PASS] as None.

Keeping expected outcomes inside output processors should be
optimized in the future. Few possible optimizations:
- separate classes for tests that are expected to PASS - done as
an example in mozilla test suite.
- cache output processors inside testcase.
- share output processors between copies of the same test - needs
some updates to the create_variant to update outproc only if
expected outcomes changed.

Bug: v8:6917
Change-Id: Ie73f1dcdf17fdfc65bce27228f818b1dd1e420c9
Reviewed-on: https://chromium-review.googlesource.com/843025
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50347}

This seperates OS-specific code of the Command class into a Posix and a
WindowsCommand to simplify scattered OS checks.

This also removes some temporary mac debug output that's obsolete after
https://crbug.com/v8/6927 got resolved.

TBR=sergiyb@chromium.org

Bug: v8:6917
Change-Id: Iaab3b527ce556dfba797a164ae58e8dd358eb56f
Reviewed-on: https://chromium-review.googlesource.com/847000Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50346}

This reverts commit ce8f5141.

Reason for revert: Changes a layout test:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/20693

Original change's description:
> Skip Execution::Call in CompileFunctionInContext.
> 
> We execute the top-level function only to get to the wrapped function.
> We could do the same by simply instantiating it.
> 
> Other approaches would change the parser so that the top-level function
> is the wrapped function. However, that change violates existing scoping
> invariants and fixing it would add a lot more complexity to the parser.
> 
> R=​adamk@chromium.org, marja@chromium.org
> 
> Bug: v8:7172
> Change-Id: I7272b8b58fc739d47a44da3a9d4a914af3e8cf3d
> Reviewed-on: https://chromium-review.googlesource.com/836367
> Reviewed-by: Adam Klein <adamk@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50333}

TBR=adamk@chromium.org,marja@chromium.org,yangguo@chromium.org

Change-Id: I922fdd2410512d837705263e092a09e041b9d28f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7172
Reviewed-on: https://chromium-review.googlesource.com/849215Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50345}

This replaces multiprocessing with threading in tests to make python
coverage work.

TBR=sergiyb@chromium.org

Bug: v8:6917
Change-Id: Idff763dfefa4a7fc782133d94089b3a5b00a194d
Reviewed-on: https://chromium-review.googlesource.com/844735Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50344}

The tests already run on upload and commit. This makes them run on the
corresponding continuous tester.

NOTRY=true
TBR=sergiyb@chromium.org

Bug: v8:6917
Change-Id: I7dedd482ea54f0879854055c97b27f825f06d6e2
Reviewed-on: https://chromium-review.googlesource.com/846807Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50343}

This should improve performance in cases where receiver or argument types
are unknown.

Bug: v8:7127, v8:7092
Change-Id: I72f1fcdc088bc817c1cc42bf27ecee91965b7680
Reviewed-on: https://chromium-review.googlesource.com/846761Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50342}

Bug: v8:7127, v8:7204, v8:7205
Change-Id: I05d6bc2e20e29eaa683ad3aa94af24a4309bcdc7
Reviewed-on: https://chromium-review.googlesource.com/847484Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50341}

DeadValue was a constant node of type None. This is unsound in the
presence of re-scheduling. This CL adds a value input to DeadValue,
which preserves the dependency on the original node of type None.

Bug: chromium:796041
Change-Id: I3ac459bf661fb78c56552e8201aa18a7dbc4d182
Reviewed-on: https://chromium-review.googlesource.com/847011
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50340}

Use the script name from the shared function info to create an
inline entry. Otherwise functions are attributed to the wrong file
in the CpuProfileNode.

See https://github.com/GoogleCloudPlatform/cloud-profiler-nodejs/issues/89

Bug: v8:7203, v8:7241
Change-Id: I8ea31943741770e6611275a9c93375922b934547
Reviewed-on: https://chromium-review.googlesource.com/848093Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50339}

This code is highly repetitive, and while we've held off on large
refactorings (using "Builder" classes, templates or macros), it's
useful to find a few common points that don't change very much.

Bug: 
Change-Id: Ib0880558cf667f5d07c8343328461609ccb1e6b1
Reviewed-on: https://chromium-review.googlesource.com/848913Reviewed-by: Daniel Clifford <danno@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50338}

Bug: v8:7127, v8:7204, v8:7205
Change-Id: Idd3c11dc92fbd2c7ccab3aece7b2ad189619fc2c
Reviewed-on: https://chromium-review.googlesource.com/833916Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50337}

Now that we have an API to request code cache, we want to decouple
compilation from serialization. As a first step, we will add CompileEager
option (used when we want to produce full code cache) and
DeferredProduceCodeOption to NoCacheReason. This is so that we can
properly bucket the compilation time and collect statistics about the
cache behaviour. Once, blink and node start using the new API, we can
remove the code to produce code cache from the compilation.

Bug: chromium:783124
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I35dbb6b0af39940450d412ff75b769603398b2f6
Reviewed-on: https://chromium-review.googlesource.com/828977
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50336}

This allows TurboFan to inline API function calls with more than 7
parameters. It's now possible to inline API function calls with up
to 127 parameters, which should be sufficiently large.

Bug: chromium:794865
Change-Id: I974fed740cd3506d0b8d75ed922227364c51a1fb
Reviewed-on: https://chromium-review.googlesource.com/848712Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50335}

Rename FastArray{Push,Pop,Shift,Slice} to
ArrayPrototype{Push,Pop,Shift,Slice}.

Bug: v8:7127, v8:7204, v8:7205
Change-Id: I409fcb4b088f1acece7c6520690f419cad36e78c
Reviewed-on: https://chromium-review.googlesource.com/846982Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50334}

We execute the top-level function only to get to the wrapped function.
We could do the same by simply instantiating it.

Other approaches would change the parser so that the top-level function
is the wrapped function. However, that change violates existing scoping
invariants and fixing it would add a lot more complexity to the parser.

R=adamk@chromium.org, marja@chromium.org

Bug: v8:7172
Change-Id: I7272b8b58fc739d47a44da3a9d4a914af3e8cf3d
Reviewed-on: https://chromium-review.googlesource.com/836367Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50333}

This reverts commit 2a8e1e4a.

Reason for revert: Time outs were caused by infra issues.

Original change's description:
> Revert "[debugger] do not try to find saved context before DebugEvaluate::Local"
> 
> This reverts commit ea7499df.
> 
> Reason for revert: Speculative, but this CL seems correlated with a bunch of timeouts on Linux:
> 
> https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap/builds/19540
> 
> Original change's description:
> > [debugger] do not try to find saved context before DebugEvaluate::Local
> > 
> > Current implementation produces crashes since sometimes saved context
> > is empty. It looks like we do not need to restore saved context since
> > we do not set debug context as current, at least all tests are passed.
> > 
> > R=​yangguo@chromium.org
> > 
> > Bug: chromium:797573,chromium:792838
> > Change-Id: I1271640f6a18cbaaecfa1e99ed9ac28e0dbbb1da
> > Reviewed-on: https://chromium-review.googlesource.com/844979
> > Reviewed-by: Yang Guo <yangguo@chromium.org>
> > Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#50327}
> 
> TBR=yangguo@chromium.org,kozyatinskiy@chromium.org
> 
> Change-Id: I543201698c96c9762c481c1f6012cc13cb712842
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: chromium:797573, chromium:792838
> Reviewed-on: https://chromium-review.googlesource.com/846205
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50331}

TBR=bbudge@chromium.org,yangguo@chromium.org,kozyatinskiy@chromium.org

Change-Id: I44e916c796b935c372ce418a3fad44aa25d6f863
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:797573, chromium:792838
Reviewed-on: https://chromium-review.googlesource.com/848132Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50332}

This reverts commit ea7499df.

Reason for revert: Speculative, but this CL seems correlated with a bunch of timeouts on Linux:

https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap/builds/19540

Original change's description:
> [debugger] do not try to find saved context before DebugEvaluate::Local
> 
> Current implementation produces crashes since sometimes saved context
> is empty. It looks like we do not need to restore saved context since
> we do not set debug context as current, at least all tests are passed.
> 
> R=​yangguo@chromium.org
> 
> Bug: chromium:797573,chromium:792838
> Change-Id: I1271640f6a18cbaaecfa1e99ed9ac28e0dbbb1da
> Reviewed-on: https://chromium-review.googlesource.com/844979
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50327}

TBR=yangguo@chromium.org,kozyatinskiy@chromium.org

Change-Id: I543201698c96c9762c481c1f6012cc13cb712842
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:797573, chromium:792838
Reviewed-on: https://chromium-review.googlesource.com/846205Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50331}

- Implements GetPageAllocator and OnCriticalMemoryPressure methods, delegating
  to the default platform, in preparation for switching over to these for
  handling memory management.

Bug: chromium:756050
Change-Id: I66edb35ce2669ee9ffd53e82a63b598cc5b7f40c
Reviewed-on: https://chromium-review.googlesource.com/845035
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50330}

Bug: 
Change-Id: Ibd094c5f0fddba4932d3b87f4c27d6af4636217b
Reviewed-on: https://chromium-review.googlesource.com/847374Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/master@{#50329}

These classes were only used to implement checked loads.

Bug: 
Change-Id: Icd3aa6f22ffe7a48e5bea98b0a44a58905788c80
Reviewed-on: https://chromium-review.googlesource.com/847578Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/master@{#50328}

Current implementation produces crashes since sometimes saved context
is empty. It looks like we do not need to restore saved context since
we do not set debug context as current, at least all tests are passed.

R=yangguo@chromium.org

Bug: chromium:797573,chromium:792838
Change-Id: I1271640f6a18cbaaecfa1e99ed9ac28e0dbbb1da
Reviewed-on: https://chromium-review.googlesource.com/844979Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50327}

Extend the code-generator tests to cover AssembleMove and AssembleSwap with
Simd128 registers and stack slots, for targets that support them.

For this to work however, we need support for passing Simd128 stack parameters
in TurboFan which this patch implements for Arm and x86. PPC and S390 both do
not support the Simd128 representation and it appears MIPS and MIPS64's
implementation of AssembleMove and AssembleSwap do not support it either.

As per the design of the tests, the set of values to perform moves on are
represented in a FixedArray of Smis (for kTagged) and HeapNumbers (for kFloat32
and kFloat64). They are converted to raw values for the moves to be performed
on, to be then converted back into a FixedArray. For the kSimd128
representation, we represent values as a FixedArray of 4 Smis, each representing
a lane. They are converted to a raw Simd128 vector using the `I32x4ReplaceLane`
and `I32x4ExtractLane` operations.

Finally, these tests need Simd128 variables mixed with the CodeStubAssembler
which is not a use-case officially supported. And as a result, the `RecordWrite`
stub does not guarantee to preserve Simd128 registers. To get around this, we
have to be careful to skip write barriers when dealing with Simd128 parameters
inside the "teardown" function, and we've had to move all allocations to the
"setup" function.

Thanks to this, we are able to catch bugs such as this one
https://bugs.chromium.org/p/v8/issues/detail?id=6843.

Bug: v8:6848
Change-Id: I8787d6339cdbfcd9356c5e8995925f0b45c562fa
Reviewed-on: https://chromium-review.googlesource.com/728599
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50326}

This reverts commit c500aa9f.

Reason for revert: Breaks V8 Linux64 - gyp

Original change's description:
> [cpu-profiler] Fix script name when recording inlining info
> 
> Use the script name from the shared function info to create an
> inline entry. Otherwise functions are attributed to the wrong file
> in the CpuProfileNode.
> 
> See https://github.com/GoogleCloudPlatform/cloud-profiler-nodejs/issues/89
> 
> 
> Bug: v8:7203, v8:7241
> Change-Id: I7a7524ad68a295efd35ef94295cd48f823376e07
> Reviewed-on: https://chromium-review.googlesource.com/845624
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50324}

TBR=jarin@chromium.org,franzih@chromium.org

Change-Id: I5876d24723bb6bd20854db91a579485b07313a69
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7203, v8:7241
Reviewed-on: https://chromium-review.googlesource.com/846771Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50325}

Use the script name from the shared function info to create an
inline entry. Otherwise functions are attributed to the wrong file
in the CpuProfileNode.

See https://github.com/GoogleCloudPlatform/cloud-profiler-nodejs/issues/89


Bug: v8:7203, v8:7241
Change-Id: I7a7524ad68a295efd35ef94295cd48f823376e07
Reviewed-on: https://chromium-review.googlesource.com/845624Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50324}

After https://crrev.com/c/832457, CheckedLoad is not being used any
more. Thus, remove it from the TurboFan backend and from all tests.
CheckedStore was already removed in https://crrev.com/c/822570.

R=jarin@chromium.org
CC=titzer@chromium.org, mstarzinger@chromium.org

Change-Id: I2eeec2f4a9d0a10067db5cc25ec41366ae85e917
Reviewed-on: https://chromium-review.googlesource.com/832459
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50323}

Bug: v8:7127, v8:7092
Change-Id: Ib79c1cf5e65632b8701528799fe7df1d5407ad59
Reviewed-on: https://chromium-review.googlesource.com/846766
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50322}

Change-Id: I56dfa2a0ee6d953002ba9a86f25c142bc2262106
Reviewed-on: https://chromium-review.googlesource.com/846740
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50321}

Bug: v8:1956
Change-Id: Iee1c6245832b786993ebd71b615cf4257c6bd0bb
Reviewed-on: https://chromium-review.googlesource.com/758769
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50320}

Cleanup, delete unused struct.

Bug: 
Change-Id: I4ea5e81d6d0711d7cf3fdd279f8b0d136bcd6db3
Reviewed-on: https://chromium-review.googlesource.com/846760
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50319}

Update notion of compatibility used in redundancy elimination
to determine whether one check subsumes another check to ignore
the feedback on the operator.

Bug: v8:7127
Change-Id: I77ab8a64adcd2b36ee7eafbe6cc148ddbc430b11
Reviewed-on: https://chromium-review.googlesource.com/839441
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50318}

Bug: v8:1956
Change-Id: Iae150730eb230dd7c90c66941d4d6aa8f0f0a423
Reviewed-on: https://chromium-review.googlesource.com/845685Reviewed-by: Daniel Clifford <danno@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50317}

This also fixes benchmark scores for String.prototype.indexOf

Bug: v8:7127, v8:7092
Change-Id: Iee0f9689feb5923b300e253c267a6f32ffd4da20
Reviewed-on: https://chromium-review.googlesource.com/846739Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50316}

Add an easy way to preview ArrayBuffer as a typed array. This change
will always allow previewing ArrayBuffer instances as Uint8Array and
Int8Array. ArrayBuffer instances that have even length will allow
Int16Array preview and ArrayBuffers that have length divisible by 4 will
allow Int32Array previews.

Bug: 
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I07440147cc9e83c8a987f9316bd8d1b936db2717
Reviewed-on: https://chromium-review.googlesource.com/842472
Commit-Queue: Eugene Ostroukhov <eostroukhov@chromium.org>
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50315}

If user redefines some getter on node then it is too easy to detect our
nice tools. Let's make it a little harder.

R=dgozman@chromium.org

Bug: chromium:795547
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ibfee850949124d056a443d869ea67a71abd71d24
Reviewed-on: https://chromium-review.googlesource.com/845299Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50314}

In tests r6_ldpc and r6_lwupc are accidentally removed instructions
which should be actually tested - LDPC and LWUPC.
(See 822be9b2 "Normalize casing of
hexadecimal digits".)
This CL fixes this error in tests.

TEST=cctest/test-assembler-mips64/r6_ldpc,
     cctest/test-assembler-mips64/r6_lwupc
BUG=

Change-Id: I34b8da2c6b97c0d85bde4f1cd3b3c704a9d05208
Reviewed-on: https://chromium-review.googlesource.com/845623Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#50313}

Add an early exit if the control op is Dead to prevent failing the
DCHECK.

BUG=chromium:797596, v8:5940, v8:3018
R=bmeurer@chromium.org, jarin@chromium.org

Change-Id: I6090380ea69c3205740b6c7a41d7c066d18d6a9f
Reviewed-on: https://chromium-review.googlesource.com/844978
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50312}

This CL adds the i32.trunc_s:sat/f32 WASM opcode to the turbofan
compiler and interpreter (more saturating operators will be added in
later CLs).

The operatation has been added under an experimental flag.

Bug: v8:7226
Change-Id: Ia69e981ffddb2da682e53ba25f489fc9d0cd2db5
Reviewed-on: https://chromium-review.googlesource.com/834670
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50311}