R=hpayer@chromium.org
BUG=chromium:454615
LOG=N

Review URL: https://codereview.chromium.org/900793004

Cr-Commit-Position: refs/heads/master@{#26452}

BUG=

Review URL: https://codereview.chromium.org/804603006

Cr-Commit-Position: refs/heads/master@{#26002}

LayoutDescriptorHelper is now able to calculate the length of contiguous regions of tagged/non-tagged fields.
This functionality is now used by both object visitor and store buffer.

TEST=cctest/test-unboxed-doubles

Review URL: https://codereview.chromium.org/726713003

Cr-Commit-Position: refs/heads/master@{#25816}

BUG=

Review URL: https://codereview.chromium.org/787383002

Cr-Commit-Position: refs/heads/master@{#25745}

Review URL: https://codereview.chromium.org/751643005

Cr-Commit-Position: refs/heads/master@{#25483}

Revert of Enable inobject double fields unboxing for 64-bit archs. (patchset #3 id:40001 of https://codereview.chromium.org/753503002/)

Reason for revert:
GCMole and gc-stress issues.

Original issue's description:
> Enable inobject double fields unboxing for 64-bit archs.

TBR=verwaest@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/751863002

Cr-Commit-Position: refs/heads/master@{#25470}

Review URL: https://codereview.chromium.org/753503002

Cr-Commit-Position: refs/heads/master@{#25469}

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/711313002

Cr-Commit-Position: refs/heads/master@{#25258}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25258 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Revert "Fixes for Windows and Mac builds after r25250."
TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/699613004

Cr-Commit-Position: refs/heads/master@{#25252}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This CL introduces LayoutDescriptor which is responsible for tracking which in-object fields are tagged and which are not.
LayoutDescriptor field added to Map. Currently unboxing is disabled.

R=hpayer@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/391693002

Cr-Commit-Position: refs/heads/master@{#25250}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mstarzinger@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/555783002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23791 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/479113004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23283 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/475463003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23114 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/463523002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23046 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This way we don't clash with the ASSERT* macros
defined by GoogleTest, and we are one step closer
to being able to replace our homegrown base/ with
base/ from Chrome.

R=jochen@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/430503007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22812 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=397485
LOG=n
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/416403011

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22642 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/413693002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/404083002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22545 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/387483002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22319 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We can iterate a scan on scavange page if it was precisely swept or just added to the old generation.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/374073002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Make sure that the overflow store buffer size is always larger or equals than the regular store buffer size.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/372983005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22278 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/377863003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22270 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/372193002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22267 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/370993004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

This reverts r22154.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/365853003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22159 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/362313002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22154 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also split v8-core independent methods from checks.h to base/logging.h and
merge v8checks with the rest of checks.

The CPU::FlushICache method is moved to CpuFeatures::FlushICache

RoundUp and related methods are moved to base/macros.h

Remove all layering violations from src/libplatform

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

Review URL: https://codereview.chromium.org/358363002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Since r21232, maps are now a non-power-of-two size and thus don't fit
evenly into a page.  No test case, as it is somewhat difficult to get
this condition to trigger.  It is possible with this case, however:

    var result;

    (function() {
        for (var i = 0; i < 1e7; i++) {
            result = (function*() { yield 1; })();
            result.foo = 1;
        }
    })();

R=hpayer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/291913002

Patch from Andy Wingo <wingo@igalia.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21744 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/316133002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21693 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- this avoids using relative include paths which are forbidden by the style guide
- makes the code more readable since it's clear which header is meant
- allows for starting to use checkdeps

BUG=none
R=jkummerow@chromium.org, danno@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/304153016

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Remove a race between sweepers and the free space skipping code (while iterating new space pointers).

There has been a race between a sweeper setting the next pointer on
free list node and the main thread skipping free space during update of
new space pointers in the heap.

This change removes the free space skipping code.

R=hpayer@chromium.org
BUG=370551
LOG=N

Review URL: https://codereview.chromium.org/285733003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21306 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/272433002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21185 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/259183002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21035 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/254603002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20966 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/227533006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20582 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This CL updates
StoreBuffer::FindPointersToNewSpaceOnPage such that it skips  constant pool array objects.  Constant Pool Arrays should never have pointers to the new space and might contain pointers to the FreeSpace map (e.g., due to code
being generated which needs to do a map-check on a FreeSpace object) which would incorrectly treated as a filler object if processed by FindPointersToNewSpaceOnPage().

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/183553003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19771 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=331444
TEST=mjsunit/regress/regress-331444.js
LOG=Y
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/125983002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18483 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Original descriptions were:
- "Refactor and cleanup VirtualMemory."
- "Fix typo."
- "Deuglify V8_INLINE and V8_NOINLINE."
- "Don't align size on allocation granularity for unaligned ReserveRegion calls."

Reasons for the revert are:
- Our mjsunit test suite slower by a factor of 5(!) in release mode.
- Flaky cctest/test-alloc/CodeRange on all architectures and platforms.
- Tankage of Sunspider by about 6% overall (unverified).

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/23970004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16662 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Remove a lot of platform duplication, and simplify the virtual
memory implementation. Also improve readability by avoiding bool
parameters for executability (use a dedicated Executability type
instead).

Get rid of the Isolate::UncheckedCurrent() call in the platform
code, as part of the Isolate TLS cleanup.

Use a dedicated random number generator for the address
randomization, instead of messing with the per-isolate random
number generators.

TEST=cctest/test-virtual-memory
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/23641009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16637 ce2b1a6d-e550-0410-aec6-3dcde31c8c00