Simplify known successor block lowering.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/308593003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21589 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove unused debug API.

R=yurys@chromium.org

Review URL: https://codereview.chromium.org/303693010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21590 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix HPushArguments instruction.

Use the zone that is passed to New() and fix implementation of
HPushArguments::AddInput() to match HPhi::AddInput().

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/309763003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21591 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Inline Array.shift() fast path instead of using a code stub.

TEST=mjsunit/array-shift,mjsunit/array-shift2,mjsunit/array-shift3
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/308793010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Handle HCheckInstanceType and HIsStringAndBranch in check elimination.

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/300423003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21593 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Handle HCheckInstanceType and HIsStringAndBranch in check elimination."

This reverts commit r21593 for breaking the Webkit tests.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/310593004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21594 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Clean up (Get|Set)Property(Attributes)WithFailedAccessChecks

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/309653003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21595 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove PROHIBITS_OVERWRITING as it is subsumed by non-configurable properties.

v8::DontDelete is set for Unforgeable properties, so just not setting PROHIBITS_OVERWRITING should be enough.

The secondary "feature" of not allowing accessors to be installed in extending objects is incorrect and confusing, given that it only applies to accessors but not to regular properties:
Object.defineProperty({__proto__:window}, "location", { value: 10 })
works where
Object.defineProperty({__proto__:window}, "location", { get: function() {} })
doesn't work.

LOG=y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/306203002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Update gn config after r21578

TBR=bmeurer@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/312513002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21597 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Move LiveEdit-related code.

port r21559 (dfd0cf8)

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/303053002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21600 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Refactor CallICStub to use a different stub for each customization.

port r21564 (a39968c)

Original commit message:
This gives us much more room to customize on different functions, by
using MajorKey to differentiate them.

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/307823003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Remove check for SAHF support in ia32

port r21422 (38edcd2)

Original commit message:
On ia32, SAHF is guaranteed. It's only necessary to probe for it on x64.

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/301083002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21602 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: use more suitable build flag

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/305643005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21603 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Some debugger-related clean-ups and renamings.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/300553008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21604 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'