The fuzz test cases now print the original test paths during execution.
This exploits this extra information and reports a hash of only one
original source file from the section that caused a difference.

The hash size is now limited to 3 to avoid possible duplicate
explosion, in case this doesn't work out as expected.

This prepares for patch 3 of:
https://chromereviews.googleplex.com/550337016/

BUG=chromium:673246
NOTRY=true
TBR=tandrii@chromium.org,mbarbella@chromium.org

Review-Url: https://codereview.chromium.org/2620343005
Cr-Commit-Position: refs/heads/master@{#42305}

Revert of PPC/s390: Internalize strings in-place (reland) (patchset #1 id:1 of https://codereview.chromium.org/2628643002/ )

Reason for revert:
Original CL https://codereview.chromium.org/2626893005 got reverted.

Original issue's description:
> PPC/s390: Internalize strings in-place (reland)
>
> Port 4c699e34
>
> Original Commit Message:
>
>     using newly introduced ThinStrings, which store a pointer to the actual,
>     internalized string they represent.
>
>     (Previously landed as #42168 / af51befe.
>
> R=jkummerow@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
> BUG=v8:4520
> LOG=N
>
> Review-Url: https://codereview.chromium.org/2628643002
> Cr-Commit-Position: refs/heads/master@{#42202}
> Committed: https://chromium.googlesource.com/v8/v8/+/aa0cb2eaf830e03fced1e00134fb65938df02388

TBR=jkummerow@chromium.org,joransiu@ca.ibm.com,jyan@ca.ibm.com,michael_dawson@ca.ibm.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4520

Review-Url: https://codereview.chromium.org/2628923004
Cr-Commit-Position: refs/heads/master@{#42304}

We allocate console timing messages for now,
as previously skipping this tickled unrelated flake.
Use a fixed message to make them consistent in predictable mode.

BUG=v8:4203
TBR=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2628173003
Cr-Commit-Position: refs/heads/master@{#42303}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9c22ce7..15635a4

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/ed0540f..fe8a3c8

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/c30c6ff..0147ef9

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

Review-Url: https://codereview.chromium.org/2633463005
Cr-Commit-Position: refs/heads/master@{#42302}

We recently started emitting an error because a module's validation
doesn't reach the end (due to lack of exports).
This contained a mistake that prevents many most other types
of errors from actually getting out.

Ensuring export errors (or not reaching then end) doesn't clobber
other errors.

TODO(bradnelson): Figure out a way to structure tests so this gets
caught.

BUG=v8:4203
R=gdeepti@chromium.org

Review-Url: https://codereview.chromium.org/2632593002
Cr-Commit-Position: refs/heads/master@{#42301}

This directs all asm.js traffic via the Wasm backend.
Make asm.js console output less noisy.

R=titzer@chromium.org,aseemgarg@chromium.org
BUG=v8:4203

Review-Url: https://codereview.chromium.org/2624813002
Cr-Original-Original-Commit-Position: refs/heads/master@{#42194}
Committed: https://chromium.googlesource.com/v8/v8/+/946cc371ed4b34d1a9f5cc615b14c41b652562ad
Review-Url: https://codereview.chromium.org/2624813002
Cr-Original-Commit-Position: refs/heads/master@{#42244}
Committed: https://chromium.googlesource.com/v8/v8/+/3169fb94c98953f002908974a606b51a35178046
Review-Url: https://codereview.chromium.org/2624813002
Cr-Commit-Position: refs/heads/master@{#42300}

BUG=None
LOG=None
R=mtrofin@chromium.org

Review-Url: https://codereview.chromium.org/2621373005
Cr-Commit-Position: refs/heads/master@{#42299}

Revert of [wasm] Enforce that function bodies end with the \"end\" opcode. (patchset #1 id:1 of https://codereview.chromium.org/2628203003/ )

Reason for revert:
OK, the failure really does seem to be due to this patch: It triggers Clang to crash

FAILED: obj/test/unittests/unittests/function-body-decoder-unittest.obj
E:\b\build\slave\cache\cipd\goma/gomacc.exe ../../third_party/llvm-build/Release+Asserts/bin/clang-cl.exe /nologo /showIncludes /FC @obj/test/unittests/unittests/function-body-decoder-unittest.obj.rsp /c ../../test/unittests/wasm/function-body-decoder-unittest.cc /Foobj/test/unittests/unittests/function-body-decoder-unittest.obj /Fd"obj/test/unittests/unittests_cc.pdb"
Assertion failed: (NumGaps == 0 || Bias < MaxDefRange) && "large ranges should not have gaps", file E:\b\build\slave\win_upload_clang\build\src\third_party\llvm\lib\MC\MCCodeView.cpp, line 531
Wrote crash dump file "C:\Users\CHROME~2\AppData\Local\Temp\goma_temp.5068\clang-cl.exe-563144.dmp"

Let's leave it out for now.

Original issue's description:
> Reland of [wasm] Enforce that function bodies end with the \"end\" opcode. (patchset #1 id:1 of https://codereview.chromium.org/2628883006/ )
>
> Reason for revert:
> Try a reland; this might not have been the source of tree-closing.
>
> Original issue's description:
> > Revert of [wasm] Enforce that function bodies end with the \"end\" opcode. (patchset #3 id:40001 of https://codereview.chromium.org/2630553002/ )
> >
> > Reason for revert:
> > Caused tree to close by failing compilation:
> >
> > https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang/builds/4451
> >
> > Original issue's description:
> > > [wasm] Enforce that function bodies end with the \"end\" opcode.
> > >
> > > R=rossberg@chromium.org
> > > BUG=chromium:575167
> > >
> > > Review-Url: https://codereview.chromium.org/2630553002
> > > Cr-Commit-Position: refs/heads/master@{#42286}
> > > Committed: https://chromium.googlesource.com/v8/v8/+/fcc6e85ec6b01e5367795f98aff104b1ff23f619
> >
> > TBR=mtrofin@chromium.org,rossberg@chromium.org,jbroman@chromium.org,titzer@chromium.org
> > # Skipping CQ checks because original CL landed less than 1 days ago.
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=chromium:575167
> >
> > Review-Url: https://codereview.chromium.org/2628883006
> > Cr-Commit-Position: refs/heads/master@{#42287}
> > Committed: https://chromium.googlesource.com/v8/v8/+/1d32a3989bc474745eeb618ebf094634f4efbb36
>
> TBR=mtrofin@chromium.org,rossberg@chromium.org,jbroman@chromium.org,titzer@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:575167
>
> Review-Url: https://codereview.chromium.org/2628203003
> Cr-Commit-Position: refs/heads/master@{#42296}
> Committed: https://chromium.googlesource.com/v8/v8/+/e539bd8e0eb6afc8e7c98c38584928d6bc799b5b

TBR=mtrofin@chromium.org,rossberg@chromium.org,jbroman@chromium.org,titzer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:575167

Review-Url: https://codereview.chromium.org/2633583002
Cr-Commit-Position: refs/heads/master@{#42298}

R=joransiu@ca.ibm.com, bjaideep@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2622073006
Cr-Commit-Position: refs/heads/master@{#42297}

Reland of [wasm] Enforce that function bodies end with the \"end\" opcode. (patchset #1 id:1 of https://codereview.chromium.org/2628883006/ )

Reason for revert:
Try a reland; this might not have been the source of tree-closing.

Original issue's description:
> Revert of [wasm] Enforce that function bodies end with the \"end\" opcode. (patchset #3 id:40001 of https://codereview.chromium.org/2630553002/ )
>
> Reason for revert:
> Caused tree to close by failing compilation:
>
> https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang/builds/4451
>
> Original issue's description:
> > [wasm] Enforce that function bodies end with the \"end\" opcode.
> >
> > R=rossberg@chromium.org
> > BUG=chromium:575167
> >
> > Review-Url: https://codereview.chromium.org/2630553002
> > Cr-Commit-Position: refs/heads/master@{#42286}
> > Committed: https://chromium.googlesource.com/v8/v8/+/fcc6e85ec6b01e5367795f98aff104b1ff23f619
>
> TBR=mtrofin@chromium.org,rossberg@chromium.org,jbroman@chromium.org,titzer@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:575167
>
> Review-Url: https://codereview.chromium.org/2628883006
> Cr-Commit-Position: refs/heads/master@{#42287}
> Committed: https://chromium.googlesource.com/v8/v8/+/1d32a3989bc474745eeb618ebf094634f4efbb36

TBR=mtrofin@chromium.org,rossberg@chromium.org,jbroman@chromium.org,titzer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:575167

Review-Url: https://codereview.chromium.org/2628203003
Cr-Commit-Position: refs/heads/master@{#42296}

Before, in `var p1 = p.then(() => {}) we would trigger the
before/after callbacks with p as the associated promise, but we must
call it with p1.

Also removes promise from PromiseReactionJobInfo.

Review-Url: https://codereview.chromium.org/2633443002
Cr-Commit-Position: refs/heads/master@{#42295}

The constant field tracking implies data constants to be stored
in fields instead of descriptor arrays. This CL does necessary
modifications to the JSModuleNamespace map setup.

BUG=v8:1569, v8:5495

Review-Url: https://codereview.chromium.org/2625093005
Cr-Commit-Position: refs/heads/master@{#42294}

enabled TODO-ed compile tests

BUG=v8:5833

Review-Url: https://codereview.chromium.org/2628053004
Cr-Commit-Position: refs/heads/master@{#42293}

Port aa75904e

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:5821
LOG=N

Review-Url: https://codereview.chromium.org/2632513002
Cr-Commit-Position: refs/heads/master@{#42292}

BUG=

Review-Url: https://codereview.chromium.org/2627003005
Cr-Commit-Position: refs/heads/master@{#42291}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/497761f..9c22ce7

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/d71b471..ed0540f

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

Review-Url: https://codereview.chromium.org/2623403003
Cr-Commit-Position: refs/heads/master@{#42290}

This is part of removing the dependency of the Chromium browser DLL on
Windows on V8.

R=jochen@chromium.org
BUG=chromium:581766

Review-Url: https://codereview.chromium.org/2621983002
Cr-Original-Commit-Position: refs/heads/master@{#42243}
Committed: https://chromium.googlesource.com/v8/v8/+/45938454177f53fa24cfc08ad97ccbc162c3ba6d
Review-Url: https://codereview.chromium.org/2621983002
Cr-Commit-Position: refs/heads/master@{#42289}

R=titzer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2620263003
Cr-Commit-Position: refs/heads/master@{#42288}

Revert of [wasm] Enforce that function bodies end with the \"end\" opcode. (patchset #3 id:40001 of https://codereview.chromium.org/2630553002/ )

Reason for revert:
Caused tree to close by failing compilation:

https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang/builds/4451

Original issue's description:
> [wasm] Enforce that function bodies end with the \"end\" opcode.
>
> R=rossberg@chromium.org
> BUG=chromium:575167
>
> Review-Url: https://codereview.chromium.org/2630553002
> Cr-Commit-Position: refs/heads/master@{#42286}
> Committed: https://chromium.googlesource.com/v8/v8/+/fcc6e85ec6b01e5367795f98aff104b1ff23f619

TBR=mtrofin@chromium.org,rossberg@chromium.org,jbroman@chromium.org,titzer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:575167

Review-Url: https://codereview.chromium.org/2628883006
Cr-Commit-Position: refs/heads/master@{#42287}

R=rossberg@chromium.org
BUG=chromium:575167

Review-Url: https://codereview.chromium.org/2630553002
Cr-Commit-Position: refs/heads/master@{#42286}

As functions are relinked at instantiation anyway, we can just
completely skip the LinkFunctions pass at wasm compile time.
This way, we also don't need to create one placeholder per wasm
function, but we just use one placeholder everywhere. The function
index which was stored in the placeholder before is now retrieved from
the wire bytes anyway.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2624383003
Cr-Commit-Position: refs/heads/master@{#42285}

This function was only needed for extrasUtils. Since it was simply
calling a builtin function, just expose that builtin instead. This
requires an arguments adapter frame for the builtin. As a drive-by
fix, also added an arguments adapter for the extrasUtils.resolvePromise
(and a regression test).

Other cleanup: removed unused native context slot for PROMISE_SET_AND_CREATE.

R=gsathya@chromium.org
BUG=v8:5343

Review-Url: https://codereview.chromium.org/2626793003
Cr-Commit-Position: refs/heads/master@{#42284}

... because we want to use BreakLocation also for wasm, but we don't
instantiate a DebugInfo for wasm.

R=yangguo@chromium.org, titzer@chromium.org
BUG=v8:5822

Review-Url: https://codereview.chromium.org/2621953002
Cr-Commit-Position: refs/heads/master@{#42283}

R=titzer@chromium.org
BUG=chromium:673297

Review-Url: https://codereview.chromium.org/2623203003
Cr-Commit-Position: refs/heads/master@{#42282}

With the new initialization semantics, the V8 ECMA 402 (Intl)
implementation does not need to indirect through a symbol to
get at the underlying object. This patch removes that indirection,
simplifying the implementation.

R=yangguo@chromium.org
BUG=v8:5751
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_noi18n_rel_ng

Review-Url: https://codereview.chromium.org/2601833002
Cr-Commit-Position: refs/heads/master@{#42281}

Port b8294aaa

Original Commit Message:

    Literal arrays and feedback vectors for a function can be garbage
    collected if we don't have a rooted closure for the function, which
    happens often. It's expensive to come back from this (recreating
    boilerplates and gathering feedback again), and the cost is
    disproportionate if the function was inlined into optimized code.

    To guard against losing these arrays when we need them, we'll now
    create literal arrays when creating the feedback vector for the outer
    closure, and root them strongly in that vector.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:5456
LOG=N

Review-Url: https://codereview.chromium.org/2626263002
Cr-Commit-Position: refs/heads/master@{#42280}

Wasm frames can be either compiled or interpreted. For interpreted wasm
frames, there is only one physical stack frame representing an
arbitrary stack of interpreted functions. Hence the physical stack
frame needs to provide a summary of the underlying functions.
Summaries were tailored for JavaScript frames before. Now they are
universal.

The refactored FrameSummaries are now also used in the FrameInspector,
and from the StackFrame objects themselves, to avoid code duplication.

All dispatch is implemented "manually", making the FrameSummary still
stack-allocatable.

BUG=v8:5822
R=yangguo@chromium.org, titzer@chromium.org

Review-Url: https://codereview.chromium.org/2619353006
Cr-Commit-Position: refs/heads/master@{#42279}

- updated WebAssembly.Instance ctor uses in our tests to match spec
- disallowing mem section *and* mem import, as per spec

BUG=v8:5824

Review-Url: https://codereview.chromium.org/2627763002
Cr-Commit-Position: refs/heads/master@{#42278}

This is a necessary cleanup before introducing PropertyConstness bit.

BUG=v8:5495

Review-Url: https://codereview.chromium.org/2624903003
Cr-Commit-Position: refs/heads/master@{#42277}

The inlining does not seem to actually improve performance, and hence outlining makes the code a bit more readable.

Performance + binary size appear to be at least as good as with inlining. On gcc I get several 10kBs savings in binary size, but only ~100B on clang. In no case have I observed a performance regression.

R=marja@chromium.org
BUG=v8:3437

Review-Url: https://codereview.chromium.org/2611993002
Cr-Commit-Position: refs/heads/master@{#42276}

BUG=

Review-Url: https://codereview.chromium.org/2629143002
Cr-Commit-Position: refs/heads/master@{#42275}

The bug was caused by AstTraversalVisitor refactoring:
https://codereview.chromium.org/2169833002/

InitializerRewriter::VisitRewritableExpression in parser.cc didn't recurse; so
it fails when a rewritable expression contains another rewritable expression.

See the bug for more details.

BUG=chromium:679727

Review-Url: https://codereview.chromium.org/2629623002
Cr-Commit-Position: refs/heads/master@{#42274}

LOG=N
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2620343002
Cr-Commit-Position: refs/heads/master@{#42273}

Add VSX instructions to perform add/sub/mul/div

R=jyan@ca.ibm.com, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, danno@chromium.org, jkummerow@chromium.org, jochen@chromium.org
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2619763003
Cr-Commit-Position: refs/heads/master@{#42272}

Revert of Internalize strings in-place (patchset #20 id:380001 of https://codereview.chromium.org/2549773002/ )

Reason for revert:
Blocks roll, ASan detects leaking ExternalStrings.

Original issue's description:
> Internalize strings in-place (reland^2)
>
> using newly introduced ThinStrings, which store a pointer to the actual,
> internalized string they represent.
>
> BUG=v8:4520
>
> (Previously landed as #42168 / af51befe)
> (Previously landed as #42193 / 4c699e34)
>
> Review-Url: https://codereview.chromium.org/2549773002
> Cr-Commit-Position: refs/heads/master@{#42235}
> Committed: https://chromium.googlesource.com/v8/v8/+/ec45e6ed2e11698c713e664b1510bc31bcdbbdba

TBR=ishell@chromium.org,hpayer@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4520

Review-Url: https://codereview.chromium.org/2626893005
Cr-Commit-Position: refs/heads/master@{#42271}

R=jgruber@chromium.org, mstarzinger@chromium.org
BUG=v8:5821

Review-Url: https://codereview.chromium.org/2622863003
Cr-Commit-Position: refs/heads/master@{#42270}

Embedders should use the EmbedderHeapTracer API.

BUG=v8:5828

Review-Url: https://codereview.chromium.org/2628893003
Cr-Commit-Position: refs/heads/master@{#42269}

R=jochen@chromium.org, peria@chromium.org
BUG=chromium:617892

Review-Url: https://codereview.chromium.org/2628093003
Cr-Commit-Position: refs/heads/master@{#42268}

BUG=chromium:575167
R=rossberg@chromium.org,ahaas@chromium.org,clemensh@chromium.org,bradnelson@chromium.org

Review-Url: https://codereview.chromium.org/2623743003
Cr-Original-Original-Commit-Position: refs/heads/master@{#42197}
Committed: https://chromium.googlesource.com/v8/v8/+/34b63f050b1a247bb64ddc91c967501ce04e011f
Review-Url: https://codereview.chromium.org/2623743003
Cr-Original-Commit-Position: refs/heads/master@{#42214}
Committed: https://chromium.googlesource.com/v8/v8/+/71f5650828ffd0162fcd67d9c6ef570a346a8a84
Review-Url: https://codereview.chromium.org/2623743003
Cr-Commit-Position: refs/heads/master@{#42267}

BUG=chromium:680110
TBR=clemensh@chromium.org, titzer@chromium.org, ahaas@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2625333002
Cr-Commit-Position: refs/heads/master@{#42266}