BUG=chromium:652721

Review-Url: https://codereview.chromium.org/2408093003
Cr-Commit-Position: refs/heads/master@{#40179}

Treat allocation of splintered ranges differently, by optimizing for move
counts (i.e. try to have less move counts), rather than optimizing for
quality of moves (which is what normal allocation does).

We can see reductions in code size in the benchmarks that measure it
(e.g. Unity)

BUG=

Review-Url: https://codereview.chromium.org/2347563004
Cr-Commit-Position: refs/heads/master@{#40178}

BUG=chromium:635948
R=dgozman@chromium.org,machenbach@chromium.org

Review-Url: https://codereview.chromium.org/2411743002
Cr-Commit-Position: refs/heads/master@{#40177}

BUG=chromium:648568

Review-Url: https://codereview.chromium.org/2412453003
Cr-Commit-Position: refs/heads/master@{#40176}

We'll take expressions like typeof 'hello' and reduce it to 'string'.
Neat! This CL moves the optimization to an explicit reduction
in typed lowering that inserts a constant string, instead of
relying on type matching.

BUG=

Review-Url: https://codereview.chromium.org/2411703002
Cr-Commit-Position: refs/heads/master@{#40175}

BUG=chromium:648568

Review-Url: https://codereview.chromium.org/2409163002
Cr-Commit-Position: refs/heads/master@{#40174}

We'll stop storing string data in Type objects. At the moment, we have
optimizations that read that string data in typed lowering. Instead,
look at nodes for this data.

R=bmeurer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2406243002
Cr-Commit-Position: refs/heads/master@{#40173}

The android_arm config is deprecated. We only use the v8 arch
strings.

NOTRY=true
TBR=adamk, caitp

Review-Url: https://codereview.chromium.org/2412513002
Cr-Commit-Position: refs/heads/master@{#40172}

Revert of Speedup access to global_proxy.* attributes/accessors. (patchset #3 id:80001 of https://codereview.chromium.org/2403003002/ )

Reason for revert:
Blocks roll:
https://codereview.chromium.org/2406213002/

Original issue's description:
> Speedup access to global_proxy.* attributes/accessors.
>
> Using a global proxy (e.g. 'window.f', 'w.f' or 'this.f') is considerably slower than evaluating just 'f'. This CL aims to perform the necessary checks at compile time and inline the accesses.
>
> This is a follow-on CL to crrev.com/2369933005:
> - The initial upload is crrev.com/2369933005 + a rebase.
> - The remaining issues are the fixes requested by the reviewers on that CL.
>
> BUG=chromium:634276
>
> Committed: https://crrev.com/8f43d748272536117008aa6a1b53ea52126261c1
> Cr-Commit-Position: refs/heads/master@{#40153}

TBR=jochen@chromium.org,verwaest@chromium.org,vogelheim@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:634276

Review-Url: https://codereview.chromium.org/2408133002
Cr-Commit-Position: refs/heads/master@{#40171}

Also include feedback about Oddballs when collecting the type feedback.
For now, Number and NumberOrOddball are collected separately
because crankshaft does not handle NumberOrOddballs consistently.
This should change once we fix crankshaft.

BUG=v8:4280, v8:5400
LOG=N

Committed: https://crrev.com/d5d283b27d406486e2f8d7b44c6d2b3db4f98458
Review-Url: https://codereview.chromium.org/2406843002
Cr-Original-Commit-Position: refs/heads/master@{#40124}
Cr-Commit-Position: refs/heads/master@{#40170}

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

Review-Url: https://codereview.chromium.org/2403093002
Cr-Commit-Position: refs/heads/master@{#40169}

Added PrintF output whenever a zone is created or destroyed. Also
enables setting of a name for each zone, which can then be shown
in the v8-heap-stats tool: https://github.com/mlippautz/v8-heap-stats/pull/2

BUG=v8:5489

Review-Url: https://codereview.chromium.org/2397573007
Cr-Commit-Position: refs/heads/master@{#40168}

This is blocked on https://bugs.chromium.org/p/v8/issues/detail?id=5484

BUG=v8:5501

Review-Url: https://codereview.chromium.org/2405813002
Cr-Commit-Position: refs/heads/master@{#40167}

Can be displayed in the external tool as well.

BUG=v8:5489

Review-Url: https://codereview.chromium.org/2392183004
Cr-Commit-Position: refs/heads/master@{#40166}

BUG=v8:5364

Review-Url: https://codereview.chromium.org/2407173002
Cr-Commit-Position: refs/heads/master@{#40165}

BUG=v8:5364

Review-Url: https://codereview.chromium.org/2406873002
Cr-Commit-Position: refs/heads/master@{#40164}

In fullcodegen we used to count CallICs as patching ICs, and thus the
heuristics are currently off by the number of calls in a code object.

R=mvstanton@chromium.org

Review-Url: https://codereview.chromium.org/2408103002
Cr-Commit-Position: refs/heads/master@{#40163}

Remove the special side channel from the CallICStub to the
ArrayConstructorStub and make the CallICStub always use the
general entry point.

R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2405203002
Cr-Commit-Position: refs/heads/master@{#40162}

This CL ports RegExp.prototype[@@split] to C++. Performance
regressions are expected due to:

* Slow RegExpImpl::Exec implementation instead of RegExpExec
  stub. We should be able to improve this by straight-lining
  RegExpImpl::Exec.
* Slow Factory::NewSubString instead of SubStringStub.
* Slow elements access to lastMatchInfo.

These points will be addressed in a follow-up CL.

BUG=v8:5339

Review-Url: https://codereview.chromium.org/2401643002
Cr-Commit-Position: refs/heads/master@{#40161}

BUG=v8:5501

Review-Url: https://codereview.chromium.org/2406803003
Cr-Commit-Position: refs/heads/master@{#40160}

This is needed for the asm.js -> WASM pipeline. A single exported
function is exported as __single_function__, but we still want to see
the correct function name on the stack, so the underlying wasm function
has to carry the original name.

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

Review-Url: https://codereview.chromium.org/2406133003
Cr-Commit-Position: refs/heads/master@{#40159}

This enables preservation of bytecode by default. Thus far bytecode was
cleared during tier-up by default and was only preserved in the staging
configuration.

R=rmcilroy@chromium.org

Review-Url: https://codereview.chromium.org/2384063010
Cr-Commit-Position: refs/heads/master@{#40158}

I use it in a follow-up commit to delta-encode asm.js source positions.

This commit also removes the redundant consume_bytes function.

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

Review-Url: https://codereview.chromium.org/2406163002
Cr-Commit-Position: refs/heads/master@{#40157}

Just a minor refactoring. We have the type for compiled modules, so use
it where possible for better type safety.

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

Review-Url: https://codereview.chromium.org/2405173002
Cr-Commit-Position: refs/heads/master@{#40156}

BUG=chromium:652721
R=ulan@chromium.org

Review-Url: https://codereview.chromium.org/2406913002
Cr-Commit-Position: refs/heads/master@{#40155}

This makes the MachineGraphVerifier happy with the stub.

R=jarin@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2394193002
Cr-Commit-Position: refs/heads/master@{#40154}

Using a global proxy (e.g. 'window.f', 'w.f' or 'this.f') is considerably slower than evaluating just 'f'. This CL aims to perform the necessary checks at compile time and inline the accesses.

This is a follow-on CL to crrev.com/2369933005:
- The initial upload is crrev.com/2369933005 + a rebase.
- The remaining issues are the fixes requested by the reviewers on that CL.

BUG=chromium:634276

Review-Url: https://codereview.chromium.org/2403003002
Cr-Commit-Position: refs/heads/master@{#40153}

R=verwaest@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2404913002
Cr-Commit-Position: refs/heads/master@{#40152}

The test still runs into the 240s timeout on Nexus5 and
Nexus7.

NOTRY=true
TBR=adamk, caitp

Review-Url: https://codereview.chromium.org/2406173002
Cr-Commit-Position: refs/heads/master@{#40151}

This test is timing out in gc-stress mode since RegExp.prototype.test
was moved to C++. RE.proto.test will be improved shortly, and this test
should be reenabled then.

BUG=v8:5339
NOTRY=true

Review-Url: https://codereview.chromium.org/2407133002
Cr-Commit-Position: refs/heads/master@{#40150}

R=bmeurer@chromium.org
BUG=v8:5049, v8:5086

Review-Url: https://codereview.chromium.org/2402363002
Cr-Commit-Position: refs/heads/master@{#40149}

Rolling v8/base/trace_event/common: https://chromium.googlesource.com/chromium/src/base/trace_event/common/+log/b403fa6..98499f3

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/17093d4..83eadac

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapul/+log/c47d2e1..f1eba76

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

Review-Url: https://codereview.chromium.org/2410723002
Cr-Commit-Position: refs/heads/master@{#40148}

  port ec132e05 (r40086)

  original commit message:
  (GcStress failure was unrelated.)

  At one time, we hoped to generate the same code for different
  native contexts. But in truth, much performance comes from optimizing
  on the native context. Now we abandon this pathway.

BUG=

Review-Url: https://codereview.chromium.org/2404843002
Cr-Commit-Position: refs/heads/master@{#40147}

  This CL set Floating-point precision in Math.Cos/Math.Sin in Crankshaft compiler to standard double precision which is expected by v8.

BUG=

Review-Url: https://codereview.chromium.org/2403803002
Cr-Commit-Position: refs/heads/master@{#40146}

Revert of [modules] Store Module metadata in per-Context EmbedderData (patchset #7 id:120001 of https://codereview.chromium.org/2393303002/ )

Reason for revert:
Fails under LeakSanitizer on auto-roll fyi bot:

https://build.chromium.org/p/client.v8.fyi/builders/Auto-roll%20-%20release%20process/builds/49447

Original issue's description:
> [modules] Store Module metadata in per-Context EmbedderData
>
> Unifies the approaches used for storing the specifier -> module mapping
> and the module -> directory mapping, using std::unordered_maps for both
> and storing them per-Context.
>
> This requires adding a method to the v8::Module API to get a hash code
> for a Module, but allows slimming down the API in return: gone are
> SetEmbedderData/GetEmbedderData, along with the fourth argument
> to ResolveModuleCallback.
>
> Besides a simpler API, this allows d8 to get closer to the HTML loader,
> which requires each Realm to have a persistent module map (though this
> capability is not yet exercised by any tests).
>
> BUG=v8:1569
>
> Committed: https://crrev.com/9cf8fce74cf6e7afd6aea3f3545f6bb61572f277
> Cr-Commit-Position: refs/heads/master@{#40133}

TBR=jochen@chromium.org,neis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:1569

Review-Url: https://codereview.chromium.org/2406973003
Cr-Commit-Position: refs/heads/master@{#40145}

Revert of [d8] Fix LeakSanitizer failures on the bots due to ModuleEmbedderData (patchset #2 id:20001 of https://codereview.chromium.org/2403303002/ )

Reason for revert:
Still failing on auto-roll fyi bot

Original issue's description:
> [d8] Fix LeakSanitizer failures on the bots due to ModuleEmbedderData
>
> BUG=v8:1569
> TBR=jochen@chromium.org
>
> Committed: https://crrev.com/cd6f1c98f989ef991da3ff465f183c1caa070918
> Cr-Commit-Position: refs/heads/master@{#40143}

TBR=jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:1569

Review-Url: https://codereview.chromium.org/2403103004
Cr-Commit-Position: refs/heads/master@{#40144}

BUG=v8:1569
TBR=jochen@chromium.org

Review-Url: https://codereview.chromium.org/2403303002
Cr-Commit-Position: refs/heads/master@{#40143}

The behavior was changed in https://codereview.chromium.org/2357423002

Review-Url: https://codereview.chromium.org/2403163002
Cr-Commit-Position: refs/heads/master@{#40142}

R=adamk
BUG=v8:5337

Review-Url: https://codereview.chromium.org/2313873003
Cr-Commit-Position: refs/heads/master@{#40141}

These were used by the JS implementation, but are now dead code.

R=caitp@igalia.com
BUG=v8:5388

Review-Url: https://codereview.chromium.org/2410533002
Cr-Commit-Position: refs/heads/master@{#40140}