Optimize Map/Set.prototype.forEach

Instead of using an iterator result object and an entries array
(for Map) we introduce a new runtime function that uses an array
as an out param.

On the Map ForEach perf test this leads to a 2.5x performance
improvement. On the overall Map and Set tests this leads to a 18%
and 13% improvement respectively.

BUG=None
LOG=Y
R=danno@chromium.org

Review URL: https://codereview.chromium.org/355663002

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22027 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: The IC exposes a register definition.

port r22011

original commit message:
  Centralize a register definition in an IC that provides:
  1) symbolic names for the register (like, edx == receiver)
  2) defines ordering when passed on the stack

  Code that implements or uses the IC should use this definition instead of "knowing" what the registers are. Or at least have the definition to validate it's assumptions.

  As a side effect of avoiding runtime static initializers (enforced by tools/check-static-initializers.sh, neat), I gave ownership of the registers array to CodeStubInterfaceDescriptor. This prompted a cleanup of that struct

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/358773002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22028 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Compile optimized code with active debugger but no break points.

R=ulan@chromium.org
BUG=386492
LOG=Y

Review URL: https://codereview.chromium.org/356713004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22029 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Cleanup CallInterfaceDescriptor

port r22014

original commit message:
 Make CallInterfaceDescriptor work like CodeStubInterfaceDescriptor, owning it's
 register and representation arrays. This also eliminates a host of TSAN warnings
 xfor static arrays

 This CL depends on https://codereview.chromium.org/352583002 landing first
 (a conceptual dependency at least).

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/343563006

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22030 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Avoid adjusting live bytes in JSObject::MigrateFastToFast() if the size delta is zero.

BUG=chromium:388880
LOG=N
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/333903003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22031 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Suppress GC stress failure for a test that asserts code being optimized.

The reason is that GC stress causes additional deopts that the test
originally did not foresee.

R=marja@chromium.org

Review URL: https://codereview.chromium.org/355973003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use IC register definitions in platform files.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/356713003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22035 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Roll buildtools to fb782d4369d5ae04f17a2fceef7de5a63e50f07b

Also add hooks to download clang-format binaries.

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

Review URL: https://codereview.chromium.org/334403005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22036 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Keep CodeRange::current_allocation_block_index_ in range after r21869.

BUG=305878,388328
LOG=N
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/354003003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22037 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland "Allow inlining of functions containing %_ArgumentsLength."

The layout test failures were unrelated to this change.

R=svenpanne@chromium.org
TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/355993002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22038 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Infer whether a variable is assigned in inner functions

R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/345573002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22039 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Added more detailed sweeping timing counters.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/331053003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22040 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix regexp=interpreted build.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/350633003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22041 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove unused Debug::AfterCompileFlags flags.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/353823004

Patch from Alexey Kozyatinskiy <kozyatinskiy@google.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22042 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add OnCompileError handler and v8::CompileError debug event.
This event is generated when the parser can not generate code.

R=vsevik@chromium.org, yangguo@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/264333007

Patch from Alexey Kozyatinskiy <kozyatinskiy@google.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22043 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Use IC register definitions in platform files.

Port r22035 (0eac506)

BUG=
R=palfia@homejinni.com

Review URL: https://codereview.chromium.org/354013003

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22044 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Use IC register definitions in platform files.

port r22035

original commit message:
  Use IC register definitions in platform files.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/356133005

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22047 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove dependency from platform files on v8.h

Pass flag values in through a central initialize call.

We still depend on utils.h for RoundUp and IsAligned.

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

Review URL: https://codereview.chromium.org/353113003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22048 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Added slim versions of output streams.

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

Review URL: https://codereview.chromium.org/352823003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22049 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "ARM: Use the shifter operand to merge in previous shift instructions."

This reverts r 22017

Reason: broke Nexus 7 GPU bots (see crbug.com/389198)

BUG=389198
LOG=n
TBR=machenbach@chromium.org, ulan@chromium.org

Review URL: https://codereview.chromium.org/359713004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22050 ce2b1a6d-e550-0410-aec6-3dcde31c8c00