R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1071333004

Cr-Commit-Position: refs/heads/master@{#27741}

Port 74c38122

Patch from Paul Lind <paul.lind@imgtec.com>.

BUG=

Review URL: https://codereview.chromium.org/1075183002

Cr-Commit-Position: refs/heads/master@{#27740}

Currently we always generate a diamond in the graph builder for every
legacy const context slot, which we cannot get rid of until late control
reduction, even if we know after context specialization that the slot is
already initialized.

Now we generate a select instead, which the CommonOperatorReducer
happily removes during typed lowering. This greatly speeds up asm.js
code generated by Emscripten with the new POINTER_MASKING mode.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1072353002

Cr-Commit-Position: refs/heads/master@{#27739}

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1075143002

Cr-Commit-Position: refs/heads/master@{#27738}

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1074063004

Cr-Commit-Position: refs/heads/master@{#27737}

BUG=none
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1075133002

Cr-Commit-Position: refs/heads/master@{#27736}

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1073083002

Cr-Commit-Position: refs/heads/master@{#27735}

BUG=none
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1078623004

Cr-Commit-Position: refs/heads/master@{#27734}

This makes sure Crankshaft respects interceptors in the global object
even when they shadow a constant global property.

R=verwaest@chromium.org
TEST=cctest/test-api-interceptors/PrePropertyHandler

Review URL: https://codereview.chromium.org/1070803002

Cr-Commit-Position: refs/heads/master@{#27733}

R=svenpanne@chromium.org
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1073983004

Cr-Commit-Position: refs/heads/master@{#27732}

Ideally we would not need the StoreWriteBarrier instructions at all,
but represent the RecordWrite functionality as machine subgraph, but
that'll take some time to get there. In the mean time we can have a
shorter instruction sequence on Intel platforms by recognizing immediate
indices here.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1075103002

Cr-Commit-Position: refs/heads/master@{#27731}

Rolling v8/tools/clang to 48782e07265a7680f544494a0fd1ad12ca826624

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1074083002

Cr-Commit-Position: refs/heads/master@{#27730}

BUG=v8:3946, v8:3982
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
LOG=N
R=arv@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1027283004

Cr-Commit-Position: refs/heads/master@{#27729}

Port 35a67b74

Original commit message:
Thanks to some careful assumptions, we can examine the object found at
vector[slot] and trust it's a heap object where the second field is
either a map if it's a WeakCell, or definitely not a map if it's a
Symbol, String or FixedArray. Use this to save a memory read.

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1059133005

Cr-Commit-Position: refs/heads/master@{#27728}

Port 9af9f1d0

Original commit message:
These operators compute the absolute floating point value of some
arbitrary input, and are implemented without any branches (i.e. using
vabs on arm, and andps/andpd on x86).

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1072963002

Cr-Commit-Position: refs/heads/master@{#27727}

Port 2d281e71

Original commit message:
This enables eager optimization of top-level code with TurboFan and
extends test coverage by triggering it with the --always-opt flag.
Script contexts are now also properly allocated in TurboFan.

R=titzer@chromium.org, mstarzinger@chromium.org,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1052123005

Cr-Commit-Position: refs/heads/master@{#27726}

Port 6a222b8f

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1070333002

Cr-Commit-Position: refs/heads/master@{#27725}

BUG=v8:1569
LOG=n

Review URL: https://codereview.chromium.org/1078903002

Cr-Commit-Position: refs/heads/master@{#27724}

Port 59be4ba7

Original commit message:
This reverts commit cbfcee55.

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1074953002

Cr-Commit-Position: refs/heads/master@{#27723}

Always use the same branch name (the old version leaked
branches). Always try to delete a possibly existing branch
on start-up and also clean up in the end.

NOTRY=true
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/1077633002

Cr-Commit-Position: refs/heads/master@{#27722}

gcc rejects the following snippet, clang rejects it in -std=c++11 mode:
  namespace A { template<class T> class C {}; }
  namespace B { template class A::C<int>; }

Indeed, the C++ standard says in 14.7.2p2 "An explicit instantiation shall
appear in an enclosing namespace of its template", so cl.exe is incorrect to
allow this.

Just move the instantiation out of the v8 namespace to fix.  No intended
behavior change.  Fixes building with clang-cl on Windows.

BUG=chromium:475643
LOG=N
TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1073903002

Cr-Commit-Position: refs/heads/master@{#27721}

When ObjectToString is installed on Object.prototype twice (once in v8natives.js, and once in harmony-tostring.js), this pollutes old code spaces on some devices. To prevent this, the function is only installed once, preventing test failures when the --harmony-tostring flag is flipped on by default.

BUG=v8:3502
LOG=N
R=arv@chromium.org

Review URL: https://codereview.chromium.org/1072083002

Cr-Commit-Position: refs/heads/master@{#27720}

Port 146598f4

Original commit message:
Optimistically pushing a lot of arguments can run into the stack limit of the process, at least on operating systems where this limit is close to the limit that V8 sets for itself.

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1073893002

Cr-Commit-Position: refs/heads/master@{#27719}

Optimiation similar to what is done for x86

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1072173002

Cr-Commit-Position: refs/heads/master@{#27718}

This is a workaround to make the debugger happy about TurboFan frames
when the debugger causes frame inspection. Note that this can happen
because the debugger can be activated while there still are optimized
TurboFan activations on the stack.

R=ishell@chromium.org
BUG=chromium:465298
TEST=mjsunit/regress/regress-crbug-465298
LOG=N

Review URL: https://codereview.chromium.org/1074793003

Cr-Commit-Position: refs/heads/master@{#27717}

Only allocate 'arguments' if the scope is not an arrow scope.

BUG=v8:2700
LOG=N
R=adamk@chromium.org, wingo@igalia.cmo

Review URL: https://codereview.chromium.org/1078483002

Cr-Commit-Position: refs/heads/master@{#27716}

These comparisons are only meant to be done by AstValueFactory itself (in
its string_table_ operations), so make the Compare() function a private
member of AstValueFactory.

All other clients of AstRawStrings should compare them by pointer value.
There were only two clients which failed to abide by this rule, one
recently-added (in ModuleDescriptor) and the other in Literal::Match
(in ast.cc, added in https://code.google.com/p/v8/source/detail?r=24396).

Review URL: https://codereview.chromium.org/1069423003

Cr-Commit-Position: refs/heads/master@{#27715}

BUG=v8:3018
R=
LOG=N

Review URL: https://codereview.chromium.org/938443002

Cr-Commit-Position: refs/heads/master@{#27714}

This fixes the d8 target which previously was getting both USING_V8_SHARED
and BUILDING_V8_SHARED defined at the same time.

Renames direct_dependent_configs to public_configs (new name, same thing).

Review URL: https://codereview.chromium.org/1065403002

Cr-Commit-Position: refs/heads/master@{#27713}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1076833002

Cr-Commit-Position: refs/heads/master@{#27712}

Revert of Merge cellspace into old pointer space (patchset #8 id:180001 of https://codereview.chromium.org/1010803012/)

Reason for revert:
Causes test failures on ARM bots related to cells and write barriers.

Original issue's description:
> Merge cellspace into old pointer space
>
> BUG=
>
> Committed: https://crrev.com/4e7163ce05f135918205c7855ae60a48e5d46cc5
> Cr-Commit-Position: refs/heads/master@{#27707}

TBR=hpayer@chromium.org,balazs.kilvady@imgtec.com,yangguo@chromium.org,verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1053243003

Cr-Commit-Position: refs/heads/master@{#27711}

TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1072143002

Cr-Commit-Position: refs/heads/master@{#27710}

R=titzer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1075903002

Cr-Commit-Position: refs/heads/master@{#27709}

Remove references to android_webview_build now that we no longer support
that build configuration. This also removes use_system_stlport which was
only supported with android_webview_build.

BUG=chromium:440793
LOG=n

Review URL: https://codereview.chromium.org/1069663002

Cr-Commit-Position: refs/heads/master@{#27708}

BUG=

Review URL: https://codereview.chromium.org/1010803012

Cr-Commit-Position: refs/heads/master@{#27707}

Compiling v8 for X87 platform with clang compiler leads to some test case failure.
So we set the default compiler for X87 to GCC.

BUG=

Review URL: https://codereview.chromium.org/1031793002

Cr-Commit-Position: refs/heads/master@{#27706}

Escaping used to happen lazily, implemented in an accessor property.
However, native implementation of RegExp methods use .source as well.
This leads to performance regressions. Now we do it eagerly instead.

R=jkummerow@chromium.org
BUG=chromium:436447
LOG=N

Review URL: https://codereview.chromium.org/1070093002

Cr-Commit-Position: refs/heads/master@{#27705}

TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/1078703002

Cr-Commit-Position: refs/heads/master@{#27704}

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1078533003

Cr-Commit-Position: refs/heads/master@{#27703}

R=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1077613002

Cr-Commit-Position: refs/heads/master@{#27702}