If (mask >>> s) == 0, ((x & mask) >> s) == 0, so replace the node with zero in
MachineOperatorReducer.

BUG=

Review-Url: https://codereview.chromium.org/2069973002
Cr-Commit-Position: refs/heads/master@{#37046}

Rolling v8/build to 6b34ef332946c38d33d0c08c1915d4b392808ebb

Rolling v8/tools/mb to 340ee1614f0ab8aa8b1846d10b26426789dbca0e

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

Review-Url: https://codereview.chromium.org/2071073003
Cr-Commit-Position: refs/heads/master@{#37045}

BUG=

Review-Url: https://codereview.chromium.org/2077623002
Cr-Commit-Position: refs/heads/master@{#37044}

port d9bf520a

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=v8:5095

Review-Url: https://codereview.chromium.org/2070893002
Cr-Commit-Position: refs/heads/master@{#37043}

Revert of [heap] Add page evacuation mode for new->new (patchset #18 id:440001 of https://codereview.chromium.org/1957323003/ )

Reason for revert:
Fragmentation of LABs could result in increasing memory usage (pages) instead of shrinking.

BUG=chromium:620320
LOG=N

Original issue's description:
> [heap] Add page evacuation mode for new->new
>
> Adds an evacuation mode that allows moving pages within new space without
> copying objects.
>
> Basic idea:
> a) Move page within new space
> b) Sweep page to make iterable and process ArrayBuffers
> c) Finish sweep till next scavenge
>
> Threshold is currently 70% live bytes, i.e., the same threshold we use
> to determine fragmented pages.
>
> BUG=chromium:581412
> LOG=N
> CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
>
> Committed: https://crrev.com/49b23201671b25092a3c22eb85783f39b95a5f87
> Cr-Commit-Position: refs/heads/master@{#36990}

TBR=ulan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:581412

Review-Url: https://codereview.chromium.org/2063013005
Cr-Commit-Position: refs/heads/master@{#37042}

Port 2d1f977c

Original commit message:

    Support for relocatable globals, to facilitate compilation before
    instantiation.

R=mtrofin@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=v8:5072
LOG=N

Review-Url: https://codereview.chromium.org/2071883002
Cr-Commit-Position: refs/heads/master@{#37041}

Port d6473f5c

Original commit message:

    See bug description.

R=mlippautz@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=chromium:619382
LOG=N

Review-Url: https://codereview.chromium.org/2072723002
Cr-Commit-Position: refs/heads/master@{#37040}

Revert of [builtins] Introduce proper Float64Exp operator. (patchset #5 id:80001 of https://codereview.chromium.org/2077533002/ )

Reason for revert:
[Sheriff] Leads to some different rounding as it seems in some audio layout tests. Please rebase upstream first if intended:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/7508

Original issue's description:
> [builtins] Introduce proper Float64Exp operator.
>
> Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
> TurboFan operator based on that, similar to what we do for Float64Log.
> Rewrite Math.exp() as TurboFan builtin and use that operator to also
> inline Math.exp() into optimized TurboFan functions.
>
> BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108
> R=mvstanton@chromium.org
>
> Committed: https://crrev.com/93e26314afc9da9b5b8bd998688262444ed73260
> Cr-Commit-Position: refs/heads/master@{#37037}

TBR=mvstanton@chromium.org,ahaas@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108

Review-Url: https://codereview.chromium.org/2070813002
Cr-Commit-Position: refs/heads/master@{#37039}

Without this check, instantiation of the wasm module would fail on
DefineOwnProperty on the exports object for the duplicate export.
Now we detect this as validation error.

R=rossberg@chromium.org, titzer@chromium.org, ahaas@chromium.org

Review-Url: https://codereview.chromium.org/2065043002
Cr-Commit-Position: refs/heads/master@{#37038}

Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
TurboFan operator based on that, similar to what we do for Float64Log.
Rewrite Math.exp() as TurboFan builtin and use that operator to also
inline Math.exp() into optimized TurboFan functions.

BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108
R=mvstanton@chromium.org

Review-Url: https://codereview.chromium.org/2077533002
Cr-Commit-Position: refs/heads/master@{#37037}

We report the byte offset as column number, but devtools assumes them
to be 1-based and subtracts one unconditionally before further
processing it. It's a bit unfortunate, but because of that we have to
just add 1 to the reported column number on the public StackTrace API.

R=ahaas@chromium.org, titzer@chromium.org
BUG=chromium:613110

Review-Url: https://codereview.chromium.org/2071563002
Cr-Commit-Position: refs/heads/master@{#37036}

BUG=v8:5095

Review-Url: https://codereview.chromium.org/2063693002
Cr-Commit-Position: refs/heads/master@{#37035}

BUG=v8:4915
LOG=Y

Review-Url: https://codereview.chromium.org/2072683002
Cr-Commit-Position: refs/heads/master@{#37034}

LoadICState was used to hold the TypeofMode flag which is relevant only for LoadGlobalIC.
This CL removes usage of this state from LoadIC and KeyedLoadIC and renames the state
class to LoadGlobalICState.

BUG=chromium:576312
LOG=Y

Review-Url: https://codereview.chromium.org/2065373003
Cr-Commit-Position: refs/heads/master@{#37033}

This is a follow-up to a recent fix to make the exception reporting even
more resilient. The original regression test flushed out more issues on
different configurations.

TBR=yangguo@chromium.org
TEST=mjsunit/regress/regress-crbug-620253
BUG=chromium:620253
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/2071783002 .

Cr-Commit-Position: refs/heads/master@{#37032}

This makes sure exception reporting done by the debug shell behaves
gracefully even near the stack limit. When line number determination
fails we just fallback to not printing source information.

R=yangguo@chromium.org
TEST=mjsunit/regress/regress-crbug-620253
BUG=chromium:620253

Review-Url: https://codereview.chromium.org/2069543007
Cr-Commit-Position: refs/heads/master@{#37031}

BUG=chromium:576312
LOG=Y

Review-Url: https://codereview.chromium.org/2062343002
Cr-Commit-Position: refs/heads/master@{#37030}

Revert of [turbofan] Properly handle dictionary maps in the prototype chain. (patchset #1 id:1 of https://codereview.chromium.org/2067423003/ )

Reason for revert:
As discussed offline with Toon, this is not the correct fix here.

Original issue's description:
> [turbofan] Properly handle dictionary maps in the prototype chain.
>
> Dictionary prototypes don't have stable maps, but still don't matter for
> element access. Generalized the JSNativeContextSpecialization a bit to
> handle everything that Crankshaft can handle in this regard.
>
> R=jarin@chromium.org
> BUG=chromium:616709
>
> Committed: https://crrev.com/1c7bdc7f6f4d9512f4982590bd949f265ee9c8c3
> Cr-Commit-Position: refs/heads/master@{#37019}

TBR=jarin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:616709

Review-Url: https://codereview.chromium.org/2076493002
Cr-Commit-Position: refs/heads/master@{#37029}

This will be needed during debugging to know function boundaries within
the wasm module bytes, and to extract the bytes for a single function
to disassemble it.

R=titzer@chromium.org
BUG=chromium:613110

Review-Url: https://codereview.chromium.org/2055783002
Cr-Commit-Position: refs/heads/master@{#37028}

Those were wrongly translated from gyp with ia32. This should
land before renaming v8_target_arch to v8_target_cpu.

BUG=chromium:620527
NOTRY=true
TBR=vogelheim@chromium.org

Review-Url: https://codereview.chromium.org/2065323004
Cr-Commit-Position: refs/heads/master@{#37027}

This will be used for disassembling individual wasm function for
showing them in devtools.
The PrintAst function now also optionally provides an offset table
mapping from byte offset to line and column in the generated text.

R=titzer@chromium.org, ahaas@chromium.org
BUG=chromium:613110

Review-Url: https://codereview.chromium.org/2050213002
Cr-Commit-Position: refs/heads/master@{#37026}

BUG=

Review-Url: https://codereview.chromium.org/2062323003
Cr-Commit-Position: refs/heads/master@{#37025}

Review-Url: https://codereview.chromium.org/2035383003
Cr-Commit-Position: refs/heads/master@{#37024}

Port d6473f5c

Original commit message:

    See bug description.

R=mlippautz@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=chromium:619382
LOG=N

Review-Url: https://codereview.chromium.org/2066603007
Cr-Commit-Position: refs/heads/master@{#37023}

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2069363002
Cr-Commit-Position: refs/heads/master@{#37022}

Port 2d1f977c

Original commit message:

    Support for relocatable globals, to facilitate compilation before
    instantiation.

R=mtrofin@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=v8:5072
LOG=N

Review-Url: https://codereview.chromium.org/2069163003
Cr-Commit-Position: refs/heads/master@{#37021}

Those operators don't have JavaScript observable side effects and would
otherwise block load elimination and other optimizations.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2075443003
Cr-Commit-Position: refs/heads/master@{#37020}

Dictionary prototypes don't have stable maps, but still don't matter for
element access. Generalized the JSNativeContextSpecialization a bit to
handle everything that Crankshaft can handle in this regard.

R=jarin@chromium.org
BUG=chromium:616709

Review-Url: https://codereview.chromium.org/2067423003
Cr-Commit-Position: refs/heads/master@{#37019}

These operators don't need to be part of the control chain.

Drive-by-fix: Properly wire the effects during representation selection.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2073683002
Cr-Commit-Position: refs/heads/master@{#37018}

LOG=N
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2050563002
Cr-Commit-Position: refs/heads/master@{#37017}

Rolling v8/build to 76e9bd0241b00735b5bc402c926d7cb141a726ef

Rolling v8/buildtools to 3780bc523aad1d68a5bd00e05c453a80b2ba0b35

Rolling v8/tools/clang to 8b0c8f71a4d41c7d2cd0d898f3547e9984f79b5d

Rolling v8/tools/mb to bc05800a7cd7833ad7c2d1423cd8b2153470c9bd

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

Review-Url: https://codereview.chromium.org/2069333002
Cr-Commit-Position: refs/heads/master@{#37016}

BUG=v8:5004

Review-Url: https://codereview.chromium.org/2070213002
Cr-Commit-Position: refs/heads/master@{#37015}

Port 3e2d60d8

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2069193003
Cr-Commit-Position: refs/heads/master@{#37014}

Review-Url: https://codereview.chromium.org/2054343002
Cr-Commit-Position: refs/heads/master@{#37013}

Port 6470ddad

Original commit message:

    This introduces SilenceNaN operator, which makes sure that we only
    store quiet NaNs into holey arrays. We omit the NaN silencing code
    at instruction selection time if the input is an operation that
    cannot possibly produce signalling NaNs.

R=jarin@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2070583002
Cr-Commit-Position: refs/heads/master@{#37012}

Only Intel needed changes, arm and mips work as expected.

BUG=

Review-Url: https://codereview.chromium.org/2061833003
Cr-Commit-Position: refs/heads/master@{#37011}

BUG=chromium:619491,chromium:611688
LOG=N
R=ulan@chromium.org

Review-Url: https://codereview.chromium.org/2065013002
Cr-Commit-Position: refs/heads/master@{#37010}

Cr-Commit-Position: refs/heads/master@{#37009}

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

Review-Url: https://codereview.chromium.org/2055203002
Cr-Commit-Position: refs/heads/master@{#37008}

Port 3e2d60d8

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2065423002
Cr-Commit-Position: refs/heads/master@{#37007}