TBR=iposva@chromium.org

Review URL: http://codereview.chromium.org/150158

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2316 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Previous implementation of sampler for OS X was copied from the Linux one. But BSD (OS X) and Linux has a very important difference in signal handling. LinuxThreads doesn't support the notion of process-directed signals. So, the SIGPROF signal was directed to the thread that installed the handler---the V8 thread. But on BSD, signal handling is implemented according to POSIX spec, where process-directed signal is to be handled by an arbitrary selected thread. By a coincidence, in V8's sample shell and in Chromium's test shell, V8's thread was picked almost every time, so sampling seemed working. But not in case of Chromium.

So, I've changed the implementation of profiler sampler to use the same scheme as on Windows---a dedicated thread with high priority is used to periodically pause and sample V8's thread.

Review URL: http://codereview.chromium.org/147150

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2315 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

  interpreter.
Review URL: http://codereview.chromium.org/151119

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2314 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/151112

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2313 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

/auto/JavaScriptV8/flexo/linux64/v8/src/x64/stub-cache-x64.cc:0:  One or more unexpected \r (^M) found;better to use only a \n  [whitespace/newline] [1]

Review URL: http://codereview.chromium.org/150121

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2312 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

because this gets backed into the generated code.
Review URL: http://codereview.chromium.org/151083

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2311 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

handling external references before a heap serialization.
Review URL: http://codereview.chromium.org/151080

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2310 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=kasperl@chromium.org
Review URL: http://codereview.chromium.org/150103

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2309 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Remove the check for deleted properties in the global load inline cache if the property is known to be read only.

Propegate the in loop flag for the global call inline cache.

Changed the propagation of the code flags in the call stub compiler to compute these the same way for all types of call stubs and assert that the flags for the generated code is the same as those used for the cache lookup.

Addressed a few comments from previous review in test-api.cc.
Review URL: http://codereview.chromium.org/150101

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2308 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/150100

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2307 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/149007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2306 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/151075

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2305 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/150093

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2304 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Remove references to Array:kHeaderSize.

Review URL: http://codereview.chromium.org/150098


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2303 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Error, ReferenceError, etc. are given a stack property that gives a
stack trace.  Here's an example stack trace:

ReferenceError: FAIL is not defined
    at Constraint.execute (deltablue.js:527)
    at Constraint.recalculate (deltablue.js:426)
    at Planner.addPropagate (deltablue.js:703)
    at Constraint.satisfy (deltablue.js:186)
    at Planner.incrementalAdd (deltablue.js:593)
    at Constraint.addConstraint (deltablue.js:164)
    at Constraint.BinaryConstraint (deltablue.js:348)
    at Constraint.EqualityConstraint (deltablue.js:517)
    at chainTest (deltablue.js:809)
    at deltaBlue (deltablue.js:881)
    at deltablue.js:888

If Error.prepareStackTrace holds a function this function is used to
format the stack trace, for instance allowing code generators to
customize the way stack traces are reported to make them easier to
process.

Next step: performance measurements to see if it is feasible to turn
this on by default.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2302 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Changed the global object representation.The global object is now always in dictionary (slow) mode with each of its properties stored in a cell object. A cell object has one field containing the actual value for the property. Inline caches for access to global properties which uses direct to the cell are now created for load, store and call to properties of the global object. When properties of the global object are deleted the cell for that property is kept with an indcation of that the property is deleted.Added counters to track the use of the global property inline caches.Added additional information on IC's in the disassembler.
Review URL: http://codereview.chromium.org/151019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Gcc generates wrong vtable entries for certain code pattern. The change in heap.cc has detailed explanation.

Review URL: http://codereview.chromium.org/147022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2299 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

  platform dependent ifdefs is useless if it does not include an error like
  this. You will end up searching for the failure in all the wrong places.
Review URL: http://codereview.chromium.org/150026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/151022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2297 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/150022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2296 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/151003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/150021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2294 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

custom %HasXXXClass() calls.
Review URL: http://codereview.chromium.org/151018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2293 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

* Fix incorrect signedness in disassembly of umull/mull on ARM.
* Fix incorrect register order in disassembly of umull/mull.
* Fix incorrect assembly of umull on ARM.
* Remove retroactively obsoleted restriction on choice of
  registers in mul instructions on ARM.
Review URL: http://codereview.chromium.org/150002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2292 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/150018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/151015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2289 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/150007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2288 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/147205

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2287 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reduces the mount of probing in large hash tables.

Review URL: http://codereview.chromium.org/150017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2286 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

access to the arguments object.
Review URL: http://codereview.chromium.org/150016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2285 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/147203

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- Simplify generated code for Runtime_** functions.

Review URL: http://codereview.chromium.org/149068

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2283 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/149066

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2282 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/147201

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2281 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/147198


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2280 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/149063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/147197


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2278 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/149005


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2277 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/149008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2276 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

some reason.
Review URL: http://codereview.chromium.org/147147

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2275 ce2b1a6d-e550-0410-aec6-3dcde31c8c00