This optimization is already implemented in fullcodegen, and
basically makes sure that we do not unecessarily blow up the
code with duplicated return sequences everywhere.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/1211373002

Cr-Commit-Position: refs/heads/master@{#29315}

BUG=chromium:502176
LOG=n

Review URL: https://codereview.chromium.org/1207693004

Cr-Commit-Position: refs/heads/master@{#29314}

This allows context-independent code generated by TurboFan to be cached
in the optimized code map and reused across native contexts. Note that
currently this cache is still flushed at GC time.

R=bmeurer@chromium.org,mvstanton@chromium.org
TEST=cctest/test-compiler/OptimizedCodeSharing

Review URL: https://codereview.chromium.org/1208013002

Cr-Commit-Position: refs/heads/master@{#29313}

Revert of Debugger: use list to find shared function info in a script. (patchset #2 id:20001 of https://codereview.chromium.org/1206573004/)

Reason for revert:
[Sheriff] Breaks layout tests:
http://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/682

Original issue's description:
> Debugger: use list to find shared function info in a script.
>
> Now that we keep tabs on shared function infos from a script, we can speed up finding shared function infos for debugging. However, in case we have to compile a function that cannot be lazily compiled without context, we fall back to the slow heap iteration.
>
> R=mstarzinger@chromium.org
> BUG=v8:4132,v8:4052
> LOG=N
>
> Committed: https://crrev.com/cfe89a71a332ef9ed481c8210bc3ad6d2822034b
> Cr-Commit-Position: refs/heads/master@{#29296}

TBR=mstarzinger@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4132,v8:4052

Review URL: https://codereview.chromium.org/1210393002

Cr-Commit-Position: refs/heads/master@{#29312}

This will enable tail call optimization even across inlining. Plus it
might enable some other interesting optimizations as well. In order to
avoid blowing up the generated code, we can still canonicalize the
epilogue in the CodeGenerator, similar to what fullcodegen does.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1215623002

Cr-Commit-Position: refs/heads/master@{#29311}

BUG=

Review URL: https://codereview.chromium.org/1209903003

Cr-Commit-Position: refs/heads/master@{#29310}

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1210863002

Cr-Commit-Position: refs/heads/master@{#29309}

Reserving space for deserialization can cause GC, which
can evict entries from the string table. Having more deleted
entries now, StringTable::EnsureCapacity could cause a GC
later during deserialization even when we actually still
have enough capacity.

Instead, we now keep new internalized strings in a separate list
and commit them to the string table at the end.

R=ulan@chromium.org
BUG=chromium:502085
LOG=N

Review URL: https://codereview.chromium.org/1204863006

Cr-Commit-Position: refs/heads/master@{#29308}

StoreP to a tagged object pointer requires a scratch register.

R=dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1207323002

Cr-Commit-Position: refs/heads/master@{#29307}

The issue is that Worker.prototype.terminate was deleting the C++ Worker
object, and then Worker.prototype.getMessage was trying to read messages from
the queue.

The simplest solution is to keep workers in a zombie state when they have been
terminated. They won't be reaped until Shell::CleanupWorkers is called.

I've also fixed some threading issues with Workers:

* Workers can be created by another Worker, so the Shell::workers_ variable
must be protected by a mutex.

* An individual Worker can typically only be accessed by the isolate that
created it, but the main thread can always terminate it, so the Worker::state_
must be accessed in a thread-safe way.

BUG=chromium:504136
R=jochen@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1208733002

Cr-Commit-Position: refs/heads/master@{#29306}

Port d783b763

Original commit message:
ARM64's `fmin` and `fmax` instructions don't have the same behaviour as
TurboFan's Float(32|64)(Min|Max) functions.

BUG=4206
LOG=N

Review URL: https://codereview.chromium.org/1204903004

Cr-Commit-Position: refs/heads/master@{#29305}

Port a58ba8d8

Original commit message:
This introduces some initial building blocks for calling out to
C/C++ functions directly from TurboFan generated code objects.

R=bmeurer@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1206343002

Cr-Commit-Position: refs/heads/master@{#29304}

Port c1a4f747

Original commit message:
The idea is that TurboFan can use this information for more intelligent
inlining.

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1208093002

Cr-Commit-Position: refs/heads/master@{#29303}

Port 9e7af9ef

Original commit message:
It's useful for the megamorphic keyed store case to not require a
vector and slot as input. Analogous to the load case, we have a dummy
one-ic-slot vector to aid. Since the only kind of MISS is for
megamorphic cache stub failures, we don't need the real vector.
The reason is that megamorphic cache stub failures don't result in any
change to the type feedback vector state.

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1212493002

Cr-Commit-Position: refs/heads/master@{#29302}

R=dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1210083002

Cr-Commit-Position: refs/heads/master@{#29301}

R=wingo@igalia.com, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1209703002

Cr-Commit-Position: refs/heads/master@{#29300}

BUG=v8:4213
R=arv@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1210003003

Cr-Commit-Position: refs/heads/master@{#29299}

BUG=

Review URL: https://codereview.chromium.org/1211833002

Cr-Commit-Position: refs/heads/master@{#29298}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1209983002

Cr-Commit-Position: refs/heads/master@{#29297}

Now that we keep tabs on shared function infos from a script, we can speed up finding shared function infos for debugging. However, in case we have to compile a function that cannot be lazily compiled without context, we fall back to the slow heap iteration.

R=mstarzinger@chromium.org
BUG=v8:4132,v8:4052
LOG=N

Review URL: https://codereview.chromium.org/1206573004

Cr-Commit-Position: refs/heads/master@{#29296}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1205913002

Cr-Commit-Position: refs/heads/master@{#29295}

This is a follow-on to https://code.google.com/p/v8/source/detail?r=22431
This will remove the compatibility logic, so that the API as described
in r22431 is the only API.

I'll let this CL will sit around for a while to give embedders a chance
to update their code.

R=yangguo@chromium.org, ulan@chromium.org
BUG=chromium:399580
LOG=Y

Review URL: https://codereview.chromium.org/392263002

Cr-Commit-Position: refs/heads/master@{#29294}

Originally applied in https://codereview.chromium.org/1202963005

BUG=v8:4214
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
LOG=N
R=arv@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1208873002

Cr-Commit-Position: refs/heads/master@{#29293}

The stack layout was different for different ports.

BUG=v8:3887
LOG=N
R=dslomov@chromium.org, adamk@chromium.org

Review URL: https://codereview.chromium.org/1203103003

Cr-Commit-Position: refs/heads/master@{#29292}

BUG=v8:4132
LOG=N

Review URL: https://codereview.chromium.org/1211803002

Cr-Commit-Position: refs/heads/master@{#29291}

Previous code review https://codereview.chromium.org/1182783009/
R=yangguo@chromium.org
BUG=chromium:482998
LOG=n

Review URL: https://codereview.chromium.org/1204123003

Cr-Commit-Position: refs/heads/master@{#29290}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1207613005

Cr-Commit-Position: refs/heads/master@{#29289}

Also remove the weird work-around for this missing optimization in
CHECK_DATE in macros.py.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1205353002

Cr-Commit-Position: refs/heads/master@{#29288}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1194023004

Cr-Commit-Position: refs/heads/master@{#29287}

Currently DebugInfo objects can be created independently from whether
the debugger is active. When tearing down the isolate, we would go
through DebugInfo objects and iterate through break locations,
causing this assertion to fail.

R=ulan@chromium.org
BUG=v8:4241
LOG=N

Review URL: https://codereview.chromium.org/1210813002

Cr-Commit-Position: refs/heads/master@{#29286}

Revert of Reland "Keep a canonical list of shared function infos." (patchset #3 id:40001 of https://codereview.chromium.org/1211453002/)

Reason for revert:
proxies test failing https://chromegw.corp.google.com/i/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/903/steps/Mjsunit/logs/proxies

Original issue's description:
> Reland "Keep a canonical list of shared function infos."
>
> This reverts commit 3164aa74.
>
> Committed: https://crrev.com/cacb646d80daa429f6915824a741f595db7d5044
> Cr-Commit-Position: refs/heads/master@{#29282}

TBR=adamk@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1206263002

Cr-Commit-Position: refs/heads/master@{#29285}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1206803003

Cr-Commit-Position: refs/heads/master@{#29284}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1208003002.

Cr-Commit-Position: refs/heads/master@{#29283}

This reverts commit 3164aa74.

Review URL: https://codereview.chromium.org/1211453002

Cr-Commit-Position: refs/heads/master@{#29282}

The idea is that TurboFan can use this information for more intelligent
inlining.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1201193003

Cr-Commit-Position: refs/heads/master@{#29281}

It's useful for the megamorphic keyed store case to not require a
vector and slot as input. Analogous to the load case, we have a dummy
one-ic-slot vector to aid. Since the only kind of MISS is for
megamorphic cache stub failures, we don't need the real vector.
The reason is that megamorphic cache stub failures don't result in any
change to the type feedback vector state.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1210583002

Cr-Commit-Position: refs/heads/master@{#29280}

This introduces some initial building blocks for calling out to
C/C++ functions directly from TurboFan generated code objects.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1205023002.

Cr-Commit-Position: refs/heads/master@{#29279}

This is one step torwards extracting an OptimizedCodeMap out from the
SharedFunctionInfo in order to have a more flexible implementation.

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

Review URL: https://codereview.chromium.org/1205783003.

Cr-Commit-Position: refs/heads/master@{#29278}

This partially reverts https://codereview.chromium.org/1162563002
because we might actually be able to optimize certain combinations
now due to dead code elimination.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1202263006

Cr-Commit-Position: refs/heads/master@{#29277}

I missed some functions that need to change.

LOG=N
BUG=v8:4124

Review URL: https://codereview.chromium.org/1199413009

Cr-Commit-Position: refs/heads/master@{#29276}