Since the page size of PPC 64 bit machines is 64K, memory smaller than 64K
    cannot be freed causing the committed memory of code space to be
    exactly 2M. Changing the test case to accomodate this.

R=mlippautz@chromium.org, ulan@chromium.org, vogelheim@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2523293002
Cr-Commit-Position: refs/heads/master@{#41292}

- Adds vmov, vswp instructions for QwNeonRegisters.
- Refactors existing vswp implementation, moves non-Neon adaption to
MacroAssembler.
- Adds simd128 support to CodeGenerator AssembleMove, AssembleSwap.

LOG=N
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2523933002
Cr-Commit-Position: refs/heads/master@{#41291}

Review-Url: https://codereview.chromium.org/2531873003
Cr-Commit-Position: refs/heads/master@{#41290}

BUG=

Review-Url: https://codereview.chromium.org/2529113002
Cr-Commit-Position: refs/heads/master@{#41289}

Trivial parts of the reverted CL:
  https://codereview.chromium.org/2516303006/

BUG=

Review-Url: https://codereview.chromium.org/2531093002
Cr-Commit-Position: refs/heads/master@{#41288}

Review-Url: https://codereview.chromium.org/2531073002
Cr-Commit-Position: refs/heads/master@{#41287}

TBR=machenbach@chromium.org

Review-Url: https://codereview.chromium.org/2533583002
Cr-Commit-Position: refs/heads/master@{#41286}

This adds microbenchmarks for:

* the RegExp constructor,
* flag accessors,
* and RegExp functions: exec, @@match, @@search, test, @@split, @@replace.

Each benchmark is further split to measure fast and slow paths.

BUG=v8:5339

Review-Url: https://codereview.chromium.org/2521263003
Cr-Commit-Position: refs/heads/master@{#41285}

Port 961a45da

BUG=

Review-Url: https://codereview.chromium.org/2505923002
Cr-Commit-Position: refs/heads/master@{#41284}

R=jgruber@chromium.org
BUG=v8:5510

Review-Url: https://codereview.chromium.org/2531543002
Cr-Commit-Position: refs/heads/master@{#41283}

This code is no longer used in full-codegen or ast-graph-builder since all
functions which have class literals go through Ignition first.

BUG=v8:5657

Review-Url: https://codereview.chromium.org/2534463002
Cr-Commit-Position: refs/heads/master@{#41282}

This removes lots of boilerplate typedefs, with the caveat of renaming
CSA::Label and Variable to CLabel and CVariable within builtins-regexp.

BUG=v8:5339

Review-Url: https://codereview.chromium.org/2524363002
Cr-Commit-Position: refs/heads/master@{#41281}

TBR=tebbi@chromium.org
BUG=chromium:668510

Review-Url: https://codereview.chromium.org/2526223003
Cr-Commit-Position: refs/heads/master@{#41280}

This removes support for try-catch as well as try-finally constructs
from the {FullCodeGenerator}. Consequently optimized code containing
such constructs must use the {BytecodeGraphBuilder} and can no longer
use the {AstGraphBuilder} for graph building.

R=jarin@chromium.org
BUG=v8:5657

Review-Url: https://codereview.chromium.org/2521233002
Cr-Commit-Position: refs/heads/master@{#41279}

Revert of [base] Pass scalar arguments by value in CHECK/DCHECK (patchset #3 id:40001 of https://codereview.chromium.org/2524093002/ )

Reason for revert:
Seems to cause compile errors on Android. Will investigate on Monday.

Original issue's description:
> [base] Pass scalar arguments by value in CHECK/DCHECK
>
> This not only potentially improves performance, but also avoids weird
> linker errors, like the one below, where I used Smi::kMinValue in a
> DCHECK_EQ.
>
> > [421/649] LINK ./mksnapshot
> > FAILED: mksnapshot
> > src/base/logging.h|178| error: undefined reference to
>   'v8::internal::Smi::kMinValue'
>
> R=bmeurer@chromium.org, ishell@chromium.org
>
> Committed: https://crrev.com/76723502528c5af003fdffc3520632ea2a13fef3
> Cr-Commit-Position: refs/heads/master@{#41273}

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

Review-Url: https://codereview.chromium.org/2527883004
Cr-Commit-Position: refs/heads/master@{#41278}

Revert of [base] Define CHECK comparison for signed vs. unsigned (patchset #5 id:80001 of https://codereview.chromium.org/2526783002/ )

Reason for revert:
Need to revert previous CL because of Android compile error, and this one depends in it.

Original issue's description:
> [base] Define CHECK comparison for signed vs. unsigned
>
> The current CHECK/DCHECK implementation fails statically if a signed
> value is compared against an unsigned value. The common solution is to
> cast on each caller, which is tedious and error-prone (might hide bugs).
> This CL implements signed vs. unsigned comparisons by executing up to
> two comparisons. For example, if i is int32_t and u is uint_32_t, a
> DCHECK_LE(i, u) would create the check
> i <= 0 || static_cast<uint32_t>(i) <= u.
> For checks against constants, at least one of the checks can be removed
> by compiler optimizations.
>
> The tradeoff we have to make is to sometimes silently execute an
> additional comparison. And we increase code complexity of course, even
> though the usage is just as easy (or even easier) as before.
>
> The compile time impact seems to be minimal:
> I ran 3 full compilations for Optdebug on my local machine, one time on
> the current ToT, one time with this CL plus http://crrev.com/2524093002.
> Before: 143.72 +- 1.21 seconds
> Now: 144.18 +- 0.67 seconds
>
> In order to check that the new comparisons are working, I refactored
> some DCHECKs in wasm to use the new magic.
>
> R=bmeurer@chromium.org, titzer@chromium.org
>
> Committed: https://crrev.com/5925074a9dab5a8577766545b91b62f2c531d3dc
> Cr-Commit-Position: refs/heads/master@{#41275}

TBR=ishell@chromium.org,titzer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2531533003
Cr-Commit-Position: refs/heads/master@{#41277}

This code is no longer used by full-codegen since all functions which use with statments,
call eval or have lookup variable access now go through Ignition first.

BUG=v8:5657

Review-Url: https://codereview.chromium.org/2514393002
Cr-Commit-Position: refs/heads/master@{#41276}

The current CHECK/DCHECK implementation fails statically if a signed
value is compared against an unsigned value. The common solution is to
cast on each caller, which is tedious and error-prone (might hide bugs).
This CL implements signed vs. unsigned comparisons by executing up to
two comparisons. For example, if i is int32_t and u is uint_32_t, a
DCHECK_LE(i, u) would create the check
i <= 0 || static_cast<uint32_t>(i) <= u.
For checks against constants, at least one of the checks can be removed
by compiler optimizations.

The tradeoff we have to make is to sometimes silently execute an
additional comparison. And we increase code complexity of course, even
though the usage is just as easy (or even easier) as before.

The compile time impact seems to be minimal:
I ran 3 full compilations for Optdebug on my local machine, one time on
the current ToT, one time with this CL plus http://crrev.com/2524093002.
Before: 143.72 +- 1.21 seconds
Now: 144.18 +- 0.67 seconds

In order to check that the new comparisons are working, I refactored
some DCHECKs in wasm to use the new magic.

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

Review-Url: https://codereview.chromium.org/2526783002
Cr-Commit-Position: refs/heads/master@{#41275}

If code is flushed on a SFI, we can still use the bytecode if it was compiled,
since this never gets flushed.

This fixes a DCHECK where we were trying to compile the bytecode multiple
times after the baseline code was flushed.

BUG=chromium:668133

Review-Url: https://codereview.chromium.org/2526243002
Cr-Commit-Position: refs/heads/master@{#41274}

This not only potentially improves performance, but also avoids weird
linker errors, like the one below, where I used Smi::kMinValue in a
DCHECK_EQ.

> [421/649] LINK ./mksnapshot
> FAILED: mksnapshot
> src/base/logging.h|178| error: undefined reference to
  'v8::internal::Smi::kMinValue'

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

Review-Url: https://codereview.chromium.org/2524093002
Cr-Commit-Position: refs/heads/master@{#41273}

For dictionary-mode receivers, the KeyedStoreGeneric stub can store
properties directly in most cases. Doing so avoids the need to have
an entry in the stub cache for every map/property combination.

Original review: https://codereview.chromium.org/2504403005/

Review-Url: https://codereview.chromium.org/2528883003
Cr-Commit-Position: refs/heads/master@{#41272}

BUG=chromium:417697

Review-Url: https://codereview.chromium.org/2522223002
Cr-Commit-Position: refs/heads/master@{#41271}

BUG=

Review-Url: https://codereview.chromium.org/2523263003
Cr-Commit-Position: refs/heads/master@{#41270}

The conversion instr was being called twice and
the src register was not restored after the shift.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2527873003
Cr-Commit-Position: refs/heads/master@{#41269}

Make apply calls with double array arguments such as
Math.min.apply(Math, [1.1, 2.2]) 1.6x faster.

Drive-by-fix: pass in the isolate to ElementsAccessor::GetImpl.

BUG=v8:4826

Review-Url: https://codereview.chromium.org/2521043005
Cr-Commit-Position: refs/heads/master@{#41268}

R=verwaest@chromium.org
BUG=v8:5643

Review-Url: https://codereview.chromium.org/2524263003
Cr-Commit-Position: refs/heads/master@{#41267}

BUG=chromium:662388

Review-Url: https://codereview.chromium.org/2495533003
Cr-Commit-Position: refs/heads/master@{#41266}

Revert of [heap] Use store buffer for writes coming from mutator. (patchset #6 id:100001 of https://codereview.chromium.org/2528563003/ )

Reason for revert:
tsan problems:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/12860

Original issue's description:
> Store buffer is used for writes that are coming from the mutator. Writes coming from the GC are directly added to the remembered set.
>
> BUG=chromium:648568
>
> Committed: https://crrev.com/c63c34e12e60ac0a19e1338b647882ac61d08741
> Cr-Commit-Position: refs/heads/master@{#41263}

TBR=ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:648568

Review-Url: https://codereview.chromium.org/2528943002
Cr-Commit-Position: refs/heads/master@{#41265}

This makes sure call-site rendering for certain {TypeError} messages is
based on the correct underlying {JSFunction}, even when inlined frames
are present. Only the {FrameSummary} knows the exact function.

R=verwaest@chromium.org
TEST=message/regress/regress-crbug-661579
BUG=chromium:661579

Review-Url: https://codereview.chromium.org/2521103005
Cr-Commit-Position: refs/heads/master@{#41264}

Store buffer is used for writes that are coming from the mutator. Writes coming from the GC are directly added to the remembered set.

BUG=chromium:648568

Review-Url: https://codereview.chromium.org/2528563003
Cr-Commit-Position: refs/heads/master@{#41263}

Because they sometimes are.

R=rossberg@chromium.org
BUG=v8:5648

Review-Url: https://codereview.chromium.org/2524333002
Cr-Commit-Position: refs/heads/master@{#41262}

Revert of [test] Add performance test for closures. (patchset #1 id:1 of https://codereview.chromium.org/2525053002/ )

Reason for revert:
Fails on perf.

Original issue's description:
> [test] Add performance test for closures.
>
> Short living closures are very common in Node.js. This benchmark tracks progress
> as we move the optimizations that are currently only behind
> --mark_shared_functions_for_tier_up to the default settings.
>
> BUG=v8:5512
>
> Committed: https://crrev.com/f277da2a00cfd27d44a33a70213a65bd82d0bc95
> Cr-Commit-Position: refs/heads/master@{#41246}

TBR=bmeurer@chromium.org,leszeks@chromium.org,franzih@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5512

Review-Url: https://codereview.chromium.org/2526163003
Cr-Commit-Position: refs/heads/master@{#41261}

This has two parts:
- in redundancy elimination, if we see addition with left hand side that
  was bounds-checked, we reconnect the lhs to the bounds check if it has better
  type.
- in representation inference, eliminate overflow checks if the input types
  guarantee no overflow.

Review-Url: https://codereview.chromium.org/2527083002
Cr-Commit-Position: refs/heads/master@{#41260}

R=jgruber@chromium.org
BUG=v8:5510

Review-Url: https://codereview.chromium.org/2524323002
Cr-Commit-Position: refs/heads/master@{#41259}

BUG=v8:4586,v8:5633
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2512733003
Cr-Commit-Position: refs/heads/master@{#41258}

In the ParseInfo constructor that takes a SharedFunctionInfo, we must
set the module flag when the function represents a module.

BUG=v8:1569

Review-Url: https://codereview.chromium.org/2525013002
Cr-Commit-Position: refs/heads/master@{#41257}

In most cases we can use the debug event listener as alternative.
Multithreaded tests are obsolete.

R=jgruber@chromium.org
BUG=v8:5510

Review-Url: https://codereview.chromium.org/2529883002
Cr-Commit-Position: refs/heads/master@{#41256}

The old algorithm produces unnecessary decimal digits. The new one
converts the significand of the input double into an uint64_t to be
just as precise as necessary.

R=tebbi@chromium.org
BUG=chromium:658712,chromium:666376

Review-Url: https://codereview.chromium.org/2520363002
Cr-Commit-Position: refs/heads/master@{#41255}

RuntimeTimerScopes always subtract their own time from the parent timer's
counter to properly account for the own time. Once a scope is destructed it
adds it own timer to the current active counter. However, if the current
counter is changed with CorrectCurrentCounterId we will attribute all the
subtimers to the previous counter, and add the own time to the new counter.
This way it is possible to end up with negative times in certain counters but
the overall would still be correct.

BUG=

Review-Url: https://codereview.chromium.org/2511093002
Cr-Commit-Position: refs/heads/master@{#41254}

The catch scopes were created with the wrong parent scope.

R=littledan@chromium.org
BUG=v8:5648

Committed: https://crrev.com/f385268d11d6da9508e481202b39f75f4b56afdd
Review-Url: https://codereview.chromium.org/2520883002
Cr-Original-Commit-Position: refs/heads/master@{#41222}
Cr-Commit-Position: refs/heads/master@{#41253}