Similarly to CheckIf, CheckUnless is a deoptimization without a specific
frame state. A frame state is assigned during effect-control linearization
(and CheckUnless is turned into DeoptimizeUnless).

At the moment, the new operator is only used at one place in native context
specialization, but we should use it everywhere. The advantage of
CHeckUnless is that it avoids non-truncating uses of values by frame
states. This particular change is aimed at Octane's crypto, where this
enables to turn one NumberMultiply into Int32Mul, and thus improve
the score by more than 10% (it also needs minus zero truncation and
typing to be improved, but those CLs are already in flight).

BUG=v8:4470
R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2080113002
Cr-Commit-Position: refs/heads/master@{#37085}

Review-Url: https://codereview.chromium.org/2081553002
Cr-Commit-Position: refs/heads/master@{#37084}

Port c781e831
Port 4d4eb611

Original commit message:

    Import base::ieee754::cos() and base::ieee754::sin() from fdlibm and
    introduce Float64Cos and Float64Sin TurboFan operator based on that,
    similar to what we do for Float64Log. Rewrite Math.cos() and Math.sin()
    as TurboFan builtins and use those operators to also inline Math.cos()
    and Math.sin() into optimized TurboFan functions.

    Unify Atanh, Cbrt and Expm1 as exports from flibm.

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

BUG=v8:5086,v8:5118,v8:5103
LOG=N

Review-Url: https://codereview.chromium.org/2078273002
Cr-Commit-Position: refs/heads/master@{#37083}

Rolling v8/tools/mb to 3d628fb28050a1deef98e3be5d5b37b5fd8ed27f

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

Review-Url: https://codereview.chromium.org/2079213002
Cr-Commit-Position: refs/heads/master@{#37082}

This introduces handling number feedback for multiplication, division
and modulus. At the moment, the only effect is using deoptimizing
number conversion instead of ToNumber call.

Review-Url: https://codereview.chromium.org/2074903002
Cr-Commit-Position: refs/heads/master@{#37081}

Review-Url: https://codereview.chromium.org/2080093002
Cr-Commit-Position: refs/heads/master@{#37080}

Rolling v8/build to dfed34c541415c22c3d6037e7e62224a2511f1e4

Rolling v8/tools/mb to 69858344b036b3694334ffe53829fe4cfad89822

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

Review-Url: https://codereview.chromium.org/2076393003
Cr-Commit-Position: refs/heads/master@{#37079}

BUG=

Review-Url: https://codereview.chromium.org/2071753002
Cr-Commit-Position: refs/heads/master@{#37078}

Revert of [Turbofan] Clean up register allocator and verifier code. (patchset #1 id:1 of https://codereview.chromium.org/2081443002/ )

Reason for revert:
[Sheriff] Speculative revert. Looks like this lets a few ignition+turbofan tests time out under tsan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/10171

Original issue's description:
> [Turbofan] Clean up register allocator and verifier code.
>
> - Improves RegisterName display in register allocator.
> - Removes GetFixedRegisters method in preparation for having multiple fp
> reg types.
> - Clean up some verifier code.
>
> LOG=N
> BUG=v8:4124
>
> Committed: https://crrev.com/d99e1ab60557e86b62ccc6c91514e817c0df370d
> Cr-Commit-Position: refs/heads/master@{#37076}

TBR=mtrofin@chromium.org,bbudge@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2078243002
Cr-Commit-Position: refs/heads/master@{#37077}

- Improves RegisterName display in register allocator.
- Removes GetFixedRegisters method in preparation for having multiple fp
reg types.
- Clean up some verifier code.

LOG=N
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2081443002
Cr-Commit-Position: refs/heads/master@{#37076}

Port f5b83dec

Original commit message:

    As a first step towards showing builtin frames in stack traces, we will now
    push target and new target unconditionally.

    Since the various specializations of BuiltinArguments are made redundant by
    this change, we can remove them and all related code.

R=jgruber@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/2079073003
Cr-Commit-Position: refs/heads/master@{#37075}

Rolling v8/build to d45e523e2428a9500e5d4c9e64d9345e75ac315a

Rolling v8/tools/gyp to c61b0b35c8396bfd59efc6cfc11401d912b0f510

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

Review-Url: https://codereview.chromium.org/2078163002
Cr-Commit-Position: refs/heads/master@{#37074}

Port d5f2ac5e

Original commit message:

    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.

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

BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108,chromium:620786
LOG=N

Review-Url: https://codereview.chromium.org/2075263002
Cr-Commit-Position: refs/heads/master@{#37073}

Import base::ieee754::cos() and base::ieee754::sin() from fdlibm and
introduce Float64Cos and Float64Sin TurboFan operator based on that,
similar to what we do for Float64Log. Rewrite Math.cos() and Math.sin()
as TurboFan builtins and use those operators to also inline Math.cos()
and Math.sin() into optimized TurboFan functions.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
R=mvstanton@chromium.org
BUG=v8:5086,v8:5118

Review-Url: https://codereview.chromium.org/2073123002
Cr-Commit-Position: refs/heads/master@{#37072}

    target_arch is incorrectly set for the ppc/s390 native builds.
    The target name returned by g++ is not a subset of the target name
    passed as Make argument and therefore defaults to ia32. Adding
    a few more swap rules to set the target_arch correctly.
    This change shouldn't affect the simulator builds.

    The change to set target_arch to ia32 was added as part of:
    https://codereview.chromium.org/2045173003

R=machenbach@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/2077733002
Cr-Commit-Position: refs/heads/master@{#37071}

... and a drive-by-fix of a comment generation in CodeAssembler.

Review-Url: https://codereview.chromium.org/2076953002
Cr-Commit-Position: refs/heads/master@{#37070}

Review-Url: https://codereview.chromium.org/2072813003
Cr-Commit-Position: refs/heads/master@{#37069}

Review-Url: https://codereview.chromium.org/2073103002
Cr-Commit-Position: refs/heads/master@{#37068}

BUG=chromium:616035
TBR=kjellander@chromium.org, vogelheim@chromium.org, jochen@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2071313002
Cr-Commit-Position: refs/heads/master@{#37067}

BUG=

Review-Url: https://codereview.chromium.org/2069373002
Cr-Commit-Position: refs/heads/master@{#37066}

Implement WASM support on big-endian platforms. WASM has
an implicit requirement that it is running on little-endian
machine. We achieve WASM support on BE by keeping data
in memory in little-endian order, and changing data
endianness before storing to memory and after loading from
memory.

BUG=

Review-Url: https://codereview.chromium.org/2034093002
Cr-Commit-Position: refs/heads/master@{#37065}

It still seems to break things in the wild, see attached Chromium
bug for details.

BUG=v8:4247, chromium:615873

Review-Url: https://codereview.chromium.org/2076763003
Cr-Commit-Position: refs/heads/master@{#37064}

BUG=chromium:619491
LOG=N

Review-Url: https://codereview.chromium.org/2076093002
Cr-Commit-Position: refs/heads/master@{#37063}

I need this method because of ActiveScriptWrappables, which have to be processed
at the atomic pause even for incremental solution, as there is no other way of
detecting when an object starts or stops being active than querying it.

LOG=no
BUG=468240

Review-Url: https://codereview.chromium.org/2065833003
Cr-Commit-Position: refs/heads/master@{#37062}

As a first step towards showing builtin frames in stack traces, we will now
push target and new target unconditionally.

Since the various specializations of BuiltinArguments are made redundant by
this change, we can remove them and all related code.

R=bmeurer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2074063002
Cr-Commit-Position: refs/heads/master@{#37061}

Also added comments for the fdlibm.js port of log10, chosen over the MSUN
version for greater precision.

R=bmeurer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2071823002
Cr-Commit-Position: refs/heads/master@{#37060}

Disassembler:
added decoding of a few instructions that were previously unsupported, fixed the decoding of pextr.

Assembler:

pmulld(XMMRegister, Operand) was actually emitting a pmuludq.

punpckldq(XMMRegister, XMMRegister) was implemented a second time as punpackldq.

BUG=

Review-Url: https://codereview.chromium.org/2070863002
Cr-Commit-Position: refs/heads/master@{#37059}

BUG=v8:5103

Review-Url: https://codereview.chromium.org/2068743002
Cr-Commit-Position: refs/heads/master@{#37058}

R=jarin@chromium.org
BUG=v8:5021

Review-Url: https://codereview.chromium.org/2074673002
Cr-Commit-Position: refs/heads/master@{#37057}

Also comment out some currently unused configs the presubmit
check now complains about. They'll be used soon, once
respective bots are added.

BUG=chromium:616035
TBR=kjellander@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2076053002
Cr-Commit-Position: refs/heads/master@{#37056}

All debugging-related information is now stored inside a dedicated
object, which is only allocated if debugging support is needed.
This is also where later a reference to the interpreter will be stored
for executing to-be-debugged functions and providing stack inspection.

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

Review-Url: https://codereview.chromium.org/2050953003
Cr-Commit-Position: refs/heads/master@{#37055}

BUG=chromium:616035
TBR=kjellander@chromium.org
NOTRY=true
NOTREECHECKS=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2072833004
Cr-Commit-Position: refs/heads/master@{#37054}

Construct a BUILTIN frame before throwing an exception from runtime.

R=bmeurer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2078443002
Cr-Commit-Position: refs/heads/master@{#37053}

BUG=chromium:619503
TBR=jochen@chromium.org, vogelheim@chromium.org, dpranke@chromium.org, thakis@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2072203002
Cr-Commit-Position: refs/heads/master@{#37052}

This adds a new BUILTIN frame type, which supports variable number of
arguments for builtins implemented in hand-written native code (we will
extend this mechanism to TurboFan builtins at some point). Convert the
Math.max and Math.min builtins to construct a BUILTIN frame if required.

This does not yet work for C++ builtins, but that'll be the next step.

R=bmeurer@chromium.org, jarin@chromium.org
BUG=v8:4815
LOG=n

Review-Url: https://codereview.chromium.org/2069423002
Cr-Commit-Position: refs/heads/master@{#37051}

Depends on https://codereview.chromium.org/2071583003/ to
skip redundant clang=1 configs.

BUG=chromium:616035
NOTRY=true

Review-Url: https://codereview.chromium.org/2071793002
Cr-Commit-Position: refs/heads/master@{#37050}

This avoids introducing an include path outside v8. Instead, the path
to where tracing includes are located is provided via a variable.

Please refer to https://codereview.chromium.org/2068073002.

Once the v8 change makes its way to chromium, we can remove the
TODO in this current change.

BUG=

Review-Url: https://codereview.chromium.org/2061933002
Cr-Commit-Position: refs/heads/master@{#37049}

R=jochen@chromium.org, machenbach@chromium.org, thakis@chromium.org
BUG=chromium:619503

Review-Url: https://codereview.chromium.org/2074003002
Cr-Commit-Position: refs/heads/master@{#37048}

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.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108,chromium:620786
R=mvstanton@chromium.org

Committed: https://crrev.com/93e26314afc9da9b5b8bd998688262444ed73260
Review-Url: https://codereview.chromium.org/2077533002
Cr-Original-Commit-Position: refs/heads/master@{#37037}
Cr-Commit-Position: refs/heads/master@{#37047}

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}