Fix bogus deopt in BuildEmitDeepCopy for holey arrays.

R=verwaest@chromium.org
BUG=chromium:242924
TEST=mjsunit/regress/regress-crbug-242924

Review URL: https://codereview.chromium.org/15735012

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14757 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make Object.freeze fast

This patch both speeds up the freeze operation itself, but also
allows properties to remain in fast mode. Objects with non-empty
elements backing stores still end up with slow elements.

BUG=v8:1858, 115960
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/14888005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14758 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix Object.freeze on dictionary-backed arrays to properly freeze elements

Follow-up to r14758: slightly rearranges JSObject::Freeze() to avoid duplicating
code while still retaining proper dictionary elements storage behavior.

Also fix a lint error.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/15737018

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Make Object.freeze fast"
and "Fix Object.freeze on dictionary-backed arrays to properly freeze elements"

This reverts r14758 and r14759 due to introducing failures in Test262

TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/15681004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14760 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Handle holes in smi-untag from LoadKeyed requiring hole handling.

Port r14756 (fda1989f)

BUG=

Review URL: https://codereview.chromium.org/15690003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14761 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make Object.freeze fast

This patch both speeds up the freeze operation itself, but also
allows properties to remain in fast mode. Objects with non-empty
elements backing stores still end up with slow elements.

Relanding r14758 and r14759 with fix for Test262: only mark properties
and elements READ_ONLY if they are not JS setter/getters. Tightened up
tests to assert frozen-ness, and added targeted tests for the new code
(covering accessors).

BUG=v8:1858, 115960
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15691007

Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14762 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Move global pretenuring flag check to ShouldGloballyPretenure().

BUG=

Review URL: https://codereview.chromium.org/15734007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14763 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
de-isolate Persistent::Dispose

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/15648008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14764 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Implement HChange support for Smis and use it in Load/StoreNameField

BUG=
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15303004

Patch from Daniel Clifford <danno@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14765 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Avoid creating duplicate entries for a value when merging HSimulates

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/15660003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14766 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Omit smi-check for write-barrier unless tagged.

R=mvstanton@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15848002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14767 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Always require exact maps.

R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/13923003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14768 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Improve SeqStringSetChar implementation.

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/15743006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Externalization API for ArrayBuffer

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/15001041

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14770 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix Windows build after r14770

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/15848003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14771 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Don't use fast literal if the boilerplate map is still deprecated.

R=mvstanton@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15660005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14774 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Missing type cell on ia32 from bindings.

Javascript constructors called from C++ code didn't have a type cell
properly filled in on ia32. This showed up as a bug in webkit bindings.
Re-enabled flag optimize-constructed-arrays.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/15870002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14775 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add asserts to String::GetFlatContent.

R=verwaest@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/13841012

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14776 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix embedded new-space pointer in LCmpObjectEqAndBranch.

R=mvstanton@chromium.org
BUG=chromium:240032
TEST=mjsunit/regress/regress-crbug-240032

Review URL: https://codereview.chromium.org/15779004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14777 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Tag length of FixedArrayBase and smi-array[x] as smi representation

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15858006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14778 ce2b1a6d-e550-0410-aec6-3dcde31c8c00