Fix assertion failure in mjsunit/regexp-stack-overflow.

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/364213003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22203 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Introduce debug events for Microtask queue.

R=yangguo@chromium.org, adamk@chromium.org, rafaelw@chromium.org, rossberg@chromium.org
BUG=chromium:272416
LOG=Y

Review URL: https://codereview.chromium.org/362783002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22204 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Remove unnecessary check in RegExpExecStub.

Port r22202 (cd07587)

BUG=v8:592
LOG=N
R=palfia@homejinni.com

Review URL: https://codereview.chromium.org/371503002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22205 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
HGraphBuilder::BuildJSObjectCheck: Tighten instance type comparison

R=danno@chromium.org

Review URL: https://codereview.chromium.org/366083005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22206 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Hydrogen LoopBuilder: add support for "while(true) {...}" loops

R=danno@chromium.org

Review URL: https://codereview.chromium.org/368243002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22207 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use the HeapObjectIterator to scan-on-scavenge map pages.

Deserializing the partial snapshot may prematurely stop using a map page, adding a free-space filler at the end. Scan-on-scavenge of map-space did not expect anything but maps, and would interpret the uninitialized memory as pointers. Using the heap iterator we can skip over free space and only visit maps.

BUG=390732
LOG=y
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/364063007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22208 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
[Arm]: Enable use of extended out-of-line constant pool for Arm.

 - Adds support to the Arm assembler to use extended constant pools.
 - Update (set_)target_address_at to support extended constant pool load
   updates.
 - Replace Operand::is_single_instruction with Operand::instructions_required
   Due to the fact that different constant pool load types require different
   numbers of instructions.
 - Various cleanups of ConstantPoolBuilder to cleaner integration of the
   extended constant pool building.
 - Update GetRelocatedValue such that offsets to both map_check and bool_load
   are explicitly provided, rather than location of bool_load being inferred
   based on map_check, since the code inbetween is no longer of a predictable
   size.
 - Update MacroAssembler::GetRelocatedValueLocation() to add support for
   getting a value from an extended constant pool entry.
 - Update Debug::SetAfterBreakTarget() to use target_address_from_return_address
   when checking for debug breaks at constant pool load points.
 - Change ConstantPoolIterateBody to iterate over both heap and code pointer in
   the small section before moving onto the extended section, to work around the
   requirement of the serializer that pointers are iterated in-order.
 - Increase old_pointer_space SizeOfFirstPage() to offset the fact that constant
   pools are now in the old pointer space (rather than code).

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/356393003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22209 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland "Linux perf tool support update + refactoring." (r22146, fifth attempt)

Bringing the offending timer functions to the platform dependent files.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/367033002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22210 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Remove unnecessary check in RegExpExecStub."

This reverts r22203 and r22205.

TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/369063005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22211 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Start using OStreams.

port r22179

original commit message:

Note that until everything is OStream-based, there are a few places
where we have to do some impedance matching. A few accessors had to be
const-corrected on the way.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/370673002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22214 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
X87: Error in CallFunctionNoFeedback ia32 made less efficient code

port r22191.

original commit message:
  Error in CallFunctionNoFeedback ia32 made less efficient code

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/371543003

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22215 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'