review.tizen.org Git - platform/upstream/v8.git/log

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verwaest@chromium.org [Fri, 11 Oct 2013 14:05:23 +0000 (14:05 +0000)]

Remove BaseLoad/StoreStub compilers, and the stub-cache interface duplication.

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26873002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Fri, 11 Oct 2013 14:03:54 +0000 (14:03 +0000)]

Fix pre-parsing of 'use strict' directive after string literals.

R=ulan@chromium.org
TEST=mjsunit/regress/regress-parse-use-strict

Review URL: https://codereview.chromium.org/27025002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17164 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

rossberg@chromium.org [Fri, 11 Oct 2013 13:59:01 +0000 (13:59 +0000)]

Minor tweaks to types cctest

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26223006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17163 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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verwaest@chromium.org [Fri, 11 Oct 2013 13:54:14 +0000 (13:54 +0000)]

Unify ComputeLoad/StoreHandler and dispatch on compile.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26831002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17162 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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verwaest@chromium.org [Fri, 11 Oct 2013 13:48:14 +0000 (13:48 +0000)]

Centralize handler caching and probing in ic.cc.
Also purge invalid POLYMORPHIC stubs. In a next step the compilers should probably be merged and the "Compute*" on the stub-cache removed.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25548009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17161 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Fri, 11 Oct 2013 13:40:08 +0000 (13:40 +0000)]

Remove dead IsEqualString and IsEqualNumber method.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/26833002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17160 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

titzer@chromium.org [Fri, 11 Oct 2013 13:00:42 +0000 (13:00 +0000)]

Implement first version of HFlowEngine, a framework for performing global flow-sensitive analyses.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/25254002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17159 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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verwaest@chromium.org [Fri, 11 Oct 2013 10:50:26 +0000 (10:50 +0000)]

Add a slow stub for store ICs.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26807003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17158 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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mvstanton@chromium.org [Fri, 11 Oct 2013 10:34:17 +0000 (10:34 +0000)]

Prepare push to trunk. Now working on version 3.22.11.

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26977003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17155 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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mvstanton@chromium.org [Fri, 11 Oct 2013 09:25:14 +0000 (09:25 +0000)]

Allow FastCloneShallowObjectStub to use AllocationMementos.
(currently turned off)

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/26827002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17154 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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jochen@chromium.org [Fri, 11 Oct 2013 07:42:43 +0000 (07:42 +0000)]

Revert r17018 - "Turn on handle zapping for release builds"

BUG=none
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/26457002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17152 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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bmeurer@chromium.org [Fri, 11 Oct 2013 07:12:06 +0000 (07:12 +0000)]

Load/Store cannot handle double representation.

Assert that the representation for Load/Store in the X64 MacroAssembler
is never Double. Also add missing test case for the Load/Store macros.

TEST=cctest/test-macro-assembler-x64
R=mvstanton@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17135

Review URL: https://codereview.chromium.org/25990002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17151 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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dslomov@chromium.org [Thu, 10 Oct 2013 20:01:42 +0000 (20:01 +0000)]

Add instruction factories to HHasInstanceTypeAndBranch.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/26859003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17150 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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dslomov@chromium.org [Thu, 10 Oct 2013 19:43:05 +0000 (19:43 +0000)]

Revert "Fixing timezone issues with date-time/parse-* tests."

This reverts commit r17148 for breaking tests on Windows.

TBR=cira@google.com,titzer@chromium.org

Review URL: https://codereview.chromium.org/26467005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17149 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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cira@chromium.org [Thu, 10 Oct 2013 17:54:33 +0000 (17:54 +0000)]

Fixing timezone issues with date-time/parse-* tests.

BUG=2919
TEST=All tests passing when local timezone was set to EST.
R=mnita@google.com, titzer@chromium.org

Review URL: https://codereview.chromium.org/25855005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17148 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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olivf@chromium.org [Thu, 10 Oct 2013 16:49:25 +0000 (16:49 +0000)]

Only set binary operation side effects flags, when observable.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/26712002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17147 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yangguo@chromium.org [Thu, 10 Oct 2013 15:38:52 +0000 (15:38 +0000)]

Handlify GetPropertyWithFailedAccessCheck.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25732002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17146 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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yangguo@chromium.org [Thu, 10 Oct 2013 15:27:02 +0000 (15:27 +0000)]

Handlify JSObject::GetProperty????Interceptor.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25669004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17145 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Thu, 10 Oct 2013 14:54:31 +0000 (14:54 +0000)]

Fix potential deopt-loop introduced in r17143.

TBR=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26805004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17144 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Thu, 10 Oct 2013 13:32:00 +0000 (13:32 +0000)]

Fixing tagged binary operation input type feedback.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/26710002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17143 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yurys@chromium.org [Thu, 10 Oct 2013 13:15:47 +0000 (13:15 +0000)]

Add column getter to CpuProfileNode

CpuProfileNode currently exposes only line number which is not enough for the cases when there is more than one function on the same line. This change exposes column number on CpuProfileNode.

BUG=302537
R=jkummerow@chromium.org, loislo@chromium.org

Review URL: https://codereview.chromium.org/25541003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17142 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

ulan@chromium.org [Thu, 10 Oct 2013 13:14:37 +0000 (13:14 +0000)]

Enable weak embedded objects in optimized code with a fix for heap verifier.

BUG=v8:2073
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25702008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17141 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yurys@chromium.org [Thu, 10 Oct 2013 13:03:41 +0000 (13:03 +0000)]

Unflake cctest/test-cpu-profiler/JsNativeJsRuntimeJsSample on Win32 Debug

Profiler is now started from JavaScript. Since we always capture stack trace when starting profiler there should always be at least one expected sample in the profile.

Also changed ProfilerEventsProcessor::AddCurrentStack to make sure it call TickSample::Init to instead of custom initialization code.

BUG=v8:2920
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/25686011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17140 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

rossberg@chromium.org [Thu, 10 Oct 2013 12:30:06 +0000 (12:30 +0000)]

More precise type lub for numbers

R=jkummerow@chromium.org
BUG=v8:2910

Review URL: https://codereview.chromium.org/25722002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17139 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

rossberg@chromium.org [Thu, 10 Oct 2013 12:28:52 +0000 (12:28 +0000)]

Revert "Load/Store cannot handle double representation."

This reverts r17135 -- test crashes on x64.

TBR=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26653004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17138 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Thu, 10 Oct 2013 11:58:16 +0000 (11:58 +0000)]

Unify and fix checkers for duplicate object literal properties.

R=ulan@chromium.org
TEST=preparser/duplicate-property,mjsunit/regress/regress-parse-object-literal

Review URL: https://codereview.chromium.org/26375004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17136 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Thu, 10 Oct 2013 11:42:00 +0000 (11:42 +0000)]

Load/Store cannot handle double representation.

Assert that the representation for Load/Store in the X64 MacroAssembler
is never Double. Also add missing test case for the Load/Store macros.

TEST=cctest/test-macro-assembler-x64
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25990002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17135 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Thu, 10 Oct 2013 11:37:48 +0000 (11:37 +0000)]

Add myself to a watchlist for the public API.

See https://groups.google.com/d/msg/v8-users/jq8k9s4xEu8/N-es0or3uz4J

BUG=none
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/26574009

Patch from Paweł Hajdan Jr. <phajdan.jr@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17134 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

ulan@chromium.org [Thu, 10 Oct 2013 10:59:02 +0000 (10:59 +0000)]

Fix windows shared library build.

R=svenpanne@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26814002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17131 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Thu, 10 Oct 2013 10:37:18 +0000 (10:37 +0000)]

Only crosscompile binary op stubs if we compile a snapshot.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/26266005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17130 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

verwaest@chromium.org [Thu, 10 Oct 2013 09:35:35 +0000 (09:35 +0000)]

Use the new introduced block's reachable flag.

BUG=
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26459002

Patch from Weiliang Lin <weiliang.lin2@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17129 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mvstanton@chromium.org [Thu, 10 Oct 2013 09:23:28 +0000 (09:23 +0000)]

Prepare push to trunk. Now working on version 3.22.10.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/26698003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17126 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mvstanton@chromium.org [Thu, 10 Oct 2013 09:05:28 +0000 (09:05 +0000)]

Revert "Debug: Allow stepping into on a given call frame."

This reverts commit r17095.
There were test failures (flaky).

BUG=chromium:296963
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/26703009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17125 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

titzer@chromium.org [Thu, 10 Oct 2013 08:50:44 +0000 (08:50 +0000)]

Simplify redundant phi elimination and use during canonicalization too.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/25896006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17124 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Thu, 10 Oct 2013 08:45:40 +0000 (08:45 +0000)]

Ensure only whitelisted stubs have sse2 versions in the snapshot.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/26680002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17123 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mvstanton@chromium.org [Thu, 10 Oct 2013 08:45:19 +0000 (08:45 +0000)]

Revert "Unify and fix checkers for duplicate object literal properties."

This reverts commit 12c68518bd2c74dc4e44d928c84c17f98ca63359.
(r17114)

R=mstarzinger@chromium.org
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/26732006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17122 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

dslomov@chromium.org [Thu, 10 Oct 2013 08:36:44 +0000 (08:36 +0000)]

Implement ArrayBuffer.isView.

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/25700010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17121 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Fri, 4 Oct 2013 19:04:34 +0000 (19:04 +0000)]

Get rid of the HInstanceSize instruction.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/25666006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17116 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Fri, 4 Oct 2013 16:58:01 +0000 (16:58 +0000)]

Unify and fix checkers for duplicate object literal properties.

R=ulan@chromium.org
TEST=preparser/duplicate-property

Review URL: https://codereview.chromium.org/25755002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17114 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Fri, 4 Oct 2013 16:21:23 +0000 (16:21 +0000)]

Remove obsolete preparser binary.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/25277003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17113 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Fri, 4 Oct 2013 15:31:39 +0000 (15:31 +0000)]

Prepare push to trunk. Now working on version 3.22.9.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25579003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17110 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Fri, 4 Oct 2013 14:53:16 +0000 (14:53 +0000)]

Fix shared_library build after r17107

R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/26004003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17109 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Fri, 4 Oct 2013 12:31:57 +0000 (12:31 +0000)]

MIPS: Hydrogenisation of binops

Port r17104.

R=olivf@chromium.org

Review URL: https://codereview.chromium.org/26002002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17108 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Fri, 4 Oct 2013 11:57:42 +0000 (11:57 +0000)]

Explicitly include defaults.cc in the shared_library gyp target.

Explicitly include defaults.cc in the shared_library gyp target, otherwise
the whole compilation unit is stripped by the Windows linker, since none of it's
symbols are referenced by any other compilation unit in V8.

BUG=None
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/25994002

Patch from Ross McIlroy <rmcilroy@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17107 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Fri, 4 Oct 2013 11:25:30 +0000 (11:25 +0000)]

Calm down GCMole after r17104.

TBR=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25409003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Fri, 4 Oct 2013 11:11:50 +0000 (11:11 +0000)]

Bump code space size for cctest/DeserializeFromSecondSerialization.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25996002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17105 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Fri, 4 Oct 2013 08:17:11 +0000 (08:17 +0000)]

Reland "Hydrogenisation of binops"

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/25494007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

ulan@chromium.org [Fri, 4 Oct 2013 07:50:36 +0000 (07:50 +0000)]

Disable weak embedded objects in optimized code because of failing test.

BUG=test/mjsunit/json.js fails
R=bmeurer@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25982002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17103 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

ulan@chromium.org [Fri, 4 Oct 2013 07:25:24 +0000 (07:25 +0000)]

Make objects embedded in optimized code weak.

This introduces a global weak hash table that maps objects embedded in
optimized code to dependent code lists. Using this table we can deoptimize
optimized code whenever a weak object embedded in the code dies.

BUG=v8:2073
R=hpayer@chromium.org, mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23477061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17102 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Fri, 4 Oct 2013 07:21:31 +0000 (07:21 +0000)]

Fix SmiMove unit test.

TEST=cctest/test-macro-assembler-x64.cc
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/25426006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17101 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Fri, 4 Oct 2013 07:13:43 +0000 (07:13 +0000)]

Add support to load/store byte fields.

This adds a new Byte representation and support for zero-extended
loads in HLoadNamedField and truncated stores in HStoreNamedField.

R=mvstanton@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17079

Review URL: https://codereview.chromium.org/25696004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17100 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Fri, 4 Oct 2013 05:47:35 +0000 (05:47 +0000)]

Revert "Add support to load/store byte fields." and "MIPS: Add support to load/store byte fields.".

This reverts commit r17079 and r17085. Will reland after fix.

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/25679008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Thu, 3 Oct 2013 12:13:01 +0000 (12:13 +0000)]

Prepare push to trunk. Now working on version 3.22.8.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/25674012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17096 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yurys@chromium.org [Thu, 3 Oct 2013 07:42:44 +0000 (07:42 +0000)]

Debug: Allow stepping into on a given call frame.

BUG=chromium:296963
R=yangguo@chromium.org, yurys

Review URL: https://codereview.chromium.org/25605005

Patch from Andrey Adaikin <aandrey@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17095 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

haitao.feng@intel.com [Thu, 3 Oct 2013 01:22:25 +0000 (01:22 +0000)]

Use StackArgumenstAccessor and kPCOnStackSize/kFPOnStackSize to compute stack address/operand for X64

R=danno@chromium.org

Review URL: https://codereview.chromium.org/22267005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

haitao.feng@intel.com [Thu, 3 Oct 2013 00:33:23 +0000 (00:33 +0000)]

Use StackArgumentsAccessor for PropertyCallback and FunctionCallback for X64

R=danno@chromium.org

Review URL: https://codereview.chromium.org/25682002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

plind44@gmail.com [Wed, 2 Oct 2013 18:19:44 +0000 (18:19 +0000)]

MIPS: Fix test262 failures and x64 compile failure.

Port r17082 (fc909df)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/25560006

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Wed, 2 Oct 2013 18:15:57 +0000 (18:15 +0000)]

Inline some more compare operations.

BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/25009003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

adamk@chromium.org [Wed, 2 Oct 2013 18:06:20 +0000 (18:06 +0000)]

Avoid allocations in Object.observe access check tests

BUG=v8:2907
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/24999007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17090 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

verwaest@chromium.org [Wed, 2 Oct 2013 17:23:30 +0000 (17:23 +0000)]

Don't use StubType to probe the code caches.
There is only one stub-type in the cache at all times. By ignoring the type up-front, we can in a later phase move cache probing before even computing the type.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25520003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17089 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

verwaest@chromium.org [Wed, 2 Oct 2013 17:20:58 +0000 (17:20 +0000)]

Use PatchCache for call ICs.

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25464004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17088 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

verwaest@chromium.org [Wed, 2 Oct 2013 17:18:13 +0000 (17:18 +0000)]

Cleanup map deprecation handling in the ICs

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25529002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17087 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

verwaest@chromium.org [Wed, 2 Oct 2013 17:17:00 +0000 (17:17 +0000)]

Rename ComputeLoadStoreField to just handle ComputeStoreField.

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25683005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17086 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

plind44@gmail.com [Wed, 2 Oct 2013 17:16:27 +0000 (17:16 +0000)]

MIPS: Add support to load/store byte fields.

Port r17079 (0885ac2)

Original commit message:
This adds a new Byte representation and support for zero-extended
loads in HLoadNamedField and truncated stores in HStoreNamedField.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/25460003

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

plind44@gmail.com [Wed, 2 Oct 2013 16:58:37 +0000 (16:58 +0000)]

MIPS: Improve and simplify removal of unreachable code.

Port r17073 (ba68149)

Original commit message:
- Detect unreachable basic blocks of code either following an unconditional deopt or after a provably untaken branch of HBranch or HCompareObjectEqAndBranch instructions.
- Emit dummy uses in unreachable blocks during Hydrogen -> Lithium translation.

BUG=chromium:258519
R=mstarzinger@chromium.org, plind44@gmail.com

Review URL: https://codereview.chromium.org/25708004

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17084 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

danno@chromium.org [Wed, 2 Oct 2013 16:13:49 +0000 (16:13 +0000)]

Fix failure in unit tests

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/25665006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17083 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

danno@chromium.org [Wed, 2 Oct 2013 15:27:51 +0000 (15:27 +0000)]

Fix test262 failures and x64 compile failure.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/25604008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

hpayer@chromium.org [Wed, 2 Oct 2013 13:36:38 +0000 (13:36 +0000)]

Tweak default max heap size constants for platforms with swap.

Configure platforms with swap memory with larger heap size by default. Also
introduce an additional "bucket" between 1GB-2GBs.

BUG=None
R=hpayer@chromium.org, jkummerow@chromium.org

Review URL: https://codereview.chromium.org/24978006

Patch from Ross McIlroy <rmcilroy@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Wed, 2 Oct 2013 13:30:31 +0000 (13:30 +0000)]

Always use timeGetTime() for TimeTicks::Now() on Windows.

This way, we also ensure that timeGetTime() is used for Time::Now(),
and thereby Date.now() even if GetTickCount64() is available.

Also add test coverage for Time::Now(), TimeTicks::Now() and
TimeTicks::HighResNow().

BUG=chromium:288924
TEST=cctest/test-timer
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/25468003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17080 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

bmeurer@chromium.org [Wed, 2 Oct 2013 13:27:53 +0000 (13:27 +0000)]

Add support to load/store byte fields.

This adds a new Byte representation and support for zero-extended
loads in HLoadNamedField and truncated stores in HStoreNamedField.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25696004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17079 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

verwaest@chromium.org [Wed, 2 Oct 2013 13:24:08 +0000 (13:24 +0000)]

Only fold polymorphic into monomorphic load if all load from either receiver or same prototype.

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25718002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17078 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

danno@chromium.org [Wed, 2 Oct 2013 12:16:57 +0000 (12:16 +0000)]

Fix improper usage of V8_OVERRIDE.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/25715002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17077 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

haitao.feng@intel.com [Wed, 2 Oct 2013 11:46:01 +0000 (11:46 +0000)]

Tweak SmiAdd for X64

R=danno@chromium.org

Review URL: https://codereview.chromium.org/24754002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17074 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

danno@chromium.org [Wed, 2 Oct 2013 11:43:41 +0000 (11:43 +0000)]

Improve and simplify removal of unreachable code

- Detect unreachable basic blocks of code either following an unconditional deopt or after a provably untaken branch of HBranch or HCompareObjectEqAndBranch instructions.
- Emit dummy uses in unreachable blocks during Hydrogen -> Lithium translation.

BUG=chromium:258519
R=jkummerow@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/22876009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17073 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Wed, 2 Oct 2013 11:32:19 +0000 (11:32 +0000)]

Add flag for printing the time it took to deserialize the snapshot.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/25695002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17072 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Wed, 2 Oct 2013 11:27:37 +0000 (11:27 +0000)]

Add a flag to print the time it takes to compile HydrogenCodeStubs.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/25693003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17071 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

palfia@homejinni.com [Wed, 2 Oct 2013 11:25:06 +0000 (11:25 +0000)]

MIPS: Allow function inlining with context change.

Port r17019 (cd4b69cd)

BUG=
R=jkummerow@chromium.org, plind44@gmail.com

Review URL: https://codereview.chromium.org/25622003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17070 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

hpayer@chromium.org [Wed, 2 Oct 2013 11:04:54 +0000 (11:04 +0000)]

Print out how many AllocationMementos were found during mark-sweep.

Moreover use the right memory boundary for AllocationMemento lookup during gc.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25655004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17069 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yangguo@chromium.org [Wed, 2 Oct 2013 10:51:10 +0000 (10:51 +0000)]

Correctly handlify CopyContextLocalsToScopeObject.

Handlified functions that expect allocation must be static, i.e. not allow to
use 'this', since 'this' is not relocated by potential GC.

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25704002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17068 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Wed, 2 Oct 2013 09:54:36 +0000 (09:54 +0000)]

Prepare push to trunk. Now working on version 3.22.7.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25657005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17067 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Wed, 2 Oct 2013 09:01:40 +0000 (09:01 +0000)]

Revert "lazy instantiation of the default isolate" and "build fix for 17049".

This reverts r17049 and r17060.

TBR=dcarney@chromium.org

Review URL: https://codereview.chromium.org/25697002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17066 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Wed, 2 Oct 2013 08:54:25 +0000 (08:54 +0000)]

Cancel push to trunk. Working on version 3.22.6 again.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25666003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17065 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yangguo@chromium.org [Wed, 2 Oct 2013 08:40:15 +0000 (08:40 +0000)]

Fix compile error.

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25674004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17064 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

jkummerow@chromium.org [Wed, 2 Oct 2013 08:32:04 +0000 (08:32 +0000)]

Prepare push to trunk. Now working on version 3.22.7.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25658003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17063 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yangguo@chromium.org [Wed, 2 Oct 2013 08:29:34 +0000 (08:29 +0000)]

Handlify Runtime_GetPrototype and Runtime_GetOwnProperty.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25478003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Wed, 2 Oct 2013 08:27:33 +0000 (08:27 +0000)]

Remove deprecated JSObject::GetLocalPropertyType method.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/25453003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

dcarney@chromium.org [Wed, 2 Oct 2013 07:55:52 +0000 (07:55 +0000)]

build fix for 17049

instantiate default isolate on v8::Isolate::GetCurrent()

TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25611003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

palfia@homejinni.com [Tue, 1 Oct 2013 21:01:25 +0000 (21:01 +0000)]

MIPS: Let the register allocator handle the context register.

Port r16993 (afba553d)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/25420002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17059 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

plind44@gmail.com [Tue, 1 Oct 2013 19:32:20 +0000 (19:32 +0000)]

MIPS: Tweak LoadKeyed.

Port r17042 (9ade336)

Original commit message:
Avoid corrupting its input.

BUG=none
TEST=none
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/25563002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17058 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

plind44@gmail.com [Tue, 1 Oct 2013 19:03:47 +0000 (19:03 +0000)]

MIPS: Lazily save double registers for HCallRuntime instructions within Hydrogen code stubs.

Port r17044 (94843cc)

Original commit message:
Right now we eagerly save all allocatable double registers upon
entry to every Hydrogen code stub that uses HCallRuntime, and
restore them when we return. Since the HCallRuntime is on the
fallback path for code stubs, this is both a waste of time and
stack space in almost every case.

This patch adds a flag to the HCallRuntime, which controls whether
the instruction saves the double register itself (using the save
doubles flag for the CEntryStub), or whether its up the surrounding
code to handle the clobbering of double registers.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/25567002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

plind44@gmail.com [Tue, 1 Oct 2013 18:54:08 +0000 (18:54 +0000)]

MIPS: Refactor PropertyCallbackInfo & FunctionCallbackInfo, part 3.

Port r17032 (3bdce1d)

Original commit message:
This CL starts using positive array indices instead of negative array indices
for the PropertyCallbackInfo and FunctionCallbackInfo fields. Also, the indices
match now, so they can be unified in the next step.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/25549002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Tue, 1 Oct 2013 18:00:02 +0000 (18:00 +0000)]

Revert "Hydrogenisation of binops"

This reverts r17052-17054 for various build breaks.

TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25571002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17055 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Tue, 1 Oct 2013 16:57:39 +0000 (16:57 +0000)]

Remove incorrect assertion.

TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25478004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17054 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Tue, 1 Oct 2013 16:11:41 +0000 (16:11 +0000)]

Bump old pointer space size.

TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25479003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17053 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

olivf@chromium.org [Tue, 1 Oct 2013 15:24:56 +0000 (15:24 +0000)]

Hydrogenisation of binops

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/24072013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17052 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Tue, 1 Oct 2013 15:06:59 +0000 (15:06 +0000)]

Turn Heap::AllowedToBeMigrated checks into asserts.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/25544002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17051 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Tue, 1 Oct 2013 14:53:45 +0000 (14:53 +0000)]

Remove obsolete AssertNoContextChangeWithHandleScope.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/25513002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17050 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

dcarney@chromium.org [Tue, 1 Oct 2013 14:26:53 +0000 (14:26 +0000)]

lazy instantiation of the default isolate

this cl also moves all accesses to the default isolate behind EnsureDefaultIsolate

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/24999002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17049 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

mstarzinger@chromium.org [Tue, 1 Oct 2013 14:26:15 +0000 (14:26 +0000)]

Handlify JSObject::LookupAccessor method.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/25508002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17048 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

commit | commitdiff | tree

yurys@chromium.org [Tue, 1 Oct 2013 13:54:53 +0000 (13:54 +0000)]

Fix threading problems in test-api when running on simulator

Sampler can retrieve current simulator for profiled isolate from its ThreadLocalTop without calls to Isolate::FindPerThreadDataForThread which sometimes leads to acquring same mutex second time.

BUG=v8:2874
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/25053002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17047 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Domain: Web Framework / Web Engine;

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