This also naturally handles pausing on uncaught exceptions in Object.observe callbacks.

R=adamk@chromium.org, yangguo@chromium.org, yurys@chromium.org
BUG=chromium:335660
LOG=Y

Review URL: https://codereview.chromium.org/692313003

Cr-Commit-Position: refs/heads/master@{#25126}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25126 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The default double precision control of FPU is extended double-precision.
While the number definition for JavaScript is double-precision. We use
the FPU control word to set the doulbe precision and replace the original
solution which store the data to memory and load it again.

This patch also fixes the error that Sunspider 1.0.2 can not run with V8 if
sse2 support is disabled.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/700053003

Patch from Chunyang Dai <chunyang.dai@intel.com>.

Cr-Commit-Position: refs/heads/master@{#25125}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25125 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port ee95552f291d3c1fff78bc4f8d8621e84976e5c9 (r25107)

original commit message:
  [turbofan] Add AllocateHeapNumberStub to avoid runtime call.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/701033002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

Cr-Commit-Position: refs/heads/master@{#25124}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25124 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/704703002

Cr-Commit-Position: refs/heads/master@{#25123}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25123 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 94a08565 for
breaking layout tests.

TBR=marja@chromium.org

Review URL: https://codereview.chromium.org/692333006

Cr-Commit-Position: refs/heads/master@{#25121}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25121 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=
BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/700873002

Cr-Commit-Position: refs/heads/master@{#25120}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25120 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=adamk@chromium.org
BUG=

Review URL: https://codereview.chromium.org/702753002

Cr-Commit-Position: refs/heads/master@{#25119}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25119 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port 983ca3f1e7bd8cbba45684d5c1642cd495ca9bc1
Port r25107

TEST=unittests
BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/699903002

Cr-Commit-Position: refs/heads/master@{#25118}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25118 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/703633003

Cr-Commit-Position: refs/heads/master@{#25117}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25117 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3483
LOG=Y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/433413002

Cr-Commit-Position: refs/heads/master@{#25116}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25116 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is in preparation for making --harmony and --es-staging synonyms.
The only remaining difference currently is block-scoping, which is still
implied by --harmony, to avoid regressing on a long-available feature.

Also removes the special-casing of --harmony-proxies.

R=adamk@chromium.org
BUG=

Review URL: https://codereview.chromium.org/693153004

Cr-Commit-Position: refs/heads/master@{#25115}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25115 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/686273003

Cr-Commit-Position: refs/heads/master@{#25114}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25114 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/697423002

Cr-Commit-Position: refs/heads/master@{#25113}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25113 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3549
LOG=Y
R=arv@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/557023002

Patch from Caitlin Potter <caitpotter88@gmail.com>.

Cr-Commit-Position: refs/heads/master@{#25111}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25111 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org, bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/694063005

Cr-Commit-Position: refs/heads/master@{#25110}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25110 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

1) In ParseLazy, we're already using the heap, so we can also tell
AstValueFactory to internalize immediately. This is more efficient.

2) No need to collect the values in values_ and strings_ if they're already
internalized.

3) No need to collect AstValues which are strings in values_ since they don't
need to be internalized (the underlying strings will be internalized
separately).

BUG=429168
LOG=N
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/693803004

Cr-Commit-Position: refs/heads/master@{#25109}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25109 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=unittests
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/703473004

Cr-Commit-Position: refs/heads/master@{#25107}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25107 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/694353006

Cr-Commit-Position: refs/heads/master@{#25106}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/701723004

Cr-Commit-Position: refs/heads/master@{#25105}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25105 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r25102.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/699143002

Cr-Commit-Position: refs/heads/master@{#25104}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=mjsunit/asm
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/701813003

Cr-Commit-Position: refs/heads/master@{#25103}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25103 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/699633002

Cr-Commit-Position: refs/heads/master@{#25102}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25102 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The main thing for v8::Exception::GetMessage() is to extract message location from
error stack trace, even when stack trace capturing is off (when DevTools is closed).

BUG=chromium:427954
R=yangguo@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/696703002

Cr-Commit-Position: refs/heads/master@{#25101}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25101 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is to show values preview of an iterator in DevTools console.

API=v8::Value::IsMapIterator, v8::Value::IsSetIterator
BUG=chromium:427868
R=arv@chromium.org, yangguo@chromium.org, adamk@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/693813002

Cr-Commit-Position: refs/heads/master@{#25100}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25100 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is a prerequisite for https://codereview.chromium.org/661133002/.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/698043003

Cr-Commit-Position: refs/heads/master@{#25099}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3636
LOG=n
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/702523002

Cr-Commit-Position: refs/heads/master@{#25098}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25098 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/694313002

Cr-Commit-Position: refs/heads/master@{#25097}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25097 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Cr-Commit-Position: refs/heads/master@{#25096}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25096 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The santizer target is empty if no sanitizers are defined, otherwise
it contains the necessary targets. Because of this we can always
depend on it. Without this dep asan builds fail.

R=brettw@chromium.org, danno@chromium.org

Review URL: https://codereview.chromium.org/697763002

Patch from Scott Violet <sky@chromium.org>.

Cr-Commit-Position: refs/heads/master@{#25094}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/702643002

Cr-Commit-Position: refs/heads/master@{#25092}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/698963002

Cr-Commit-Position: refs/heads/master@{#25091}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=rossberg
BUG=v8:3642
LOG=Y

Review URL: https://codereview.chromium.org/698073003

Cr-Commit-Position: refs/heads/master@{#25088}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25088 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When --harmony-classes is enabled we did not treat static as a
strict reserved word.

BUG=v8:3642
LOG=Y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/652743009

Cr-Commit-Position: refs/heads/master@{#25087}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25087 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3192
LOG=n
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/185563004

Cr-Commit-Position: refs/heads/master@{#25086}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25086 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/699673002

Cr-Commit-Position: refs/heads/master@{#25085}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org, jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/652263002

Cr-Commit-Position: refs/heads/master@{#25084}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25084 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org, jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/687003005

Cr-Commit-Position: refs/heads/master@{#25083}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25083 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=chromium:427813
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/676393002

Cr-Commit-Position: refs/heads/master@{#25082}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r25061 (7fe697f)

TEST=cctest,mjsunit,unittests
BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/701543002

Cr-Commit-Position: refs/heads/master@{#25081}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Mips64 is affected but not for long.

TEST=
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/689113003

Cr-Commit-Position: refs/heads/master@{#25080}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25080 ce2b1a6d-e550-0410-aec6-3dcde31c8c00