When running profiling in debug mode, several assertions in frame
iterators that are undoubtedly useful when iterator is started from a
VM thread in a known "good" state, may fail when running over a stack
of a suspended VM thread. This patch makes SafeStackFrameIterator
to proactively check addresses and bail out from iteration early,
before an assertion will be triggered.

BUG=crbug/55565

Review URL: http://codereview.chromium.org/3436006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5467 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

http://codereview.chromium.org/3442004/show

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5466 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Added some more uses of NearLabel.

Review URL: http://codereview.chromium.org/3381005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5465 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3425005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5461 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change introduces near labels in the assembler, allowing us to
uptimize forward jumps (conditional and unconditional) if we can
guarantee that the jump is witin range -128 to +127.

I changed a large fractions of the existing Labels to NearLabels, and
left out cases where it was not immediately clear if it could be used
or not (not immediately clear means labels covering a large code
block, or used in function calls which we could potentially change to
accept near labels). 

Review URL: http://codereview.chromium.org/3388004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5460 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3429006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5459 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Remove position from symbol data - they must come in the correct order anyway.

Review URL: http://codereview.chromium.org/3384003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

for a SubStringStub and StringCompareStub in the ARM backend.  This
is a commit of http://codereview.chromium.org/3341012 for Andreas
Anyuru.
Review URL: http://codereview.chromium.org/3387003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5457 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The stubs get an additional flag for including the smi code
inside the stub. This allows us to generate more compact code
if we don't want to inline the smi case outside the stub.

Review URL: http://codereview.chromium.org/3388005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5456 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Currently weak handles retain an object for another GC round (oftem times,
major GC round.)  Instrumenting Chromium shows that navigation leaves
many global objects which are only collected in next go.  Let's
attempt to collect more garbage when approacing OOM condition.

Review URL: http://codereview.chromium.org/3327021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5455 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3399005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5454 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Allow List::sort, with an integer comparison function, to sort 64-bit pointers in profile-generator.  Change a static const int member to be declared and defined only inside the class declaration in class Runtime.
Review URL: http://codereview.chromium.org/3424002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5453 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

It's a good idea to allow receiver to interrupt data transmission.

Review URL: http://codereview.chromium.org/3409002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5452 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3293002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5451 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

to avoid storing serialized snapshot on VM, instead it is emitted
using output stream interface.

The size of JSON emitted is roughly equal to used heap size
(when stored as an ASCII string).

Now a whole heap snapshot can be serialized and transmitted outside
VM. This makes possible:
  - implementing non-async UI for heap snapshots inspection;
  - storing heap snapshots for further inspection;
  - remote profiling (we can even implement a snapshotting mode
    where a snapshot isn't even stored in VM, only transmitted --
    good for mobile devices);
  - creating tools for outside heap snapshots processing, e.g.
    converting to HPROF.

Review URL: http://codereview.chromium.org/3311028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5450 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3300031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5449 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3308028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5446 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3376003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5445 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

eval-introduced variables in full-codegen.

Make sure that x64 assembler records source positions for calls.
Review URL: http://codereview.chromium.org/3357022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5441 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3291021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5440 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3358025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5439 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3311025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5438 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3327013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5437 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This makes, e.g., Date.parse("2010-08-31T22:35:36-09:00") work as
expected. Without this change, the "-9:00" timezone-offset portion
causes V8 to fail to properly parse that string into a date.
BUG=http://code.google.com/p/v8/issues/detail?id=857
TEST=Try Date.parse("2010-08-31T22:35:36-09:00") and make sure
that it gets parsed without errors and does not return NaN.

Review URL: http://codereview.chromium.org/3318017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5436 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3295023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5434 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3291015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5433 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3132046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5432 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3356010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

variables in full-codegen.

Review URL: http://codereview.chromium.org/3295022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5430 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

search) from 5 to 7. 
Review URL: http://codereview.chromium.org/3294016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5429 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3300020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5428 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3304012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5427 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3324010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5424 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Call to Runtime_StackGuard should be generated after loop body.
Otherwise, break position will be the previous position before
loop statement.

Review URL: http://codereview.chromium.org/3302012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5423 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Under some conditions (ADD, non-number arguments passed in registers)
GenerateRegisterArgumentsPush was called twice and the stack broke.

Review URL: http://codereview.chromium.org/3290012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5422 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3308010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5421 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

A strings which represents an array index with length 8 and 9 digits do not pass this check. However generated hash is valid.

Review URL: http://codereview.chromium.org/3295017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5420 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3351010/show
Committed for Thiago Farina <tfarina@chromium.org>


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5419 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3318014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5416 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3356007

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