R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/196133030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/198253004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=hpayer@chromium.org, danno@chromium.org

Review URL: https://codereview.chromium.org/177243012

Patch from Fedor Indutny <fedor.indutny@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19978 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/181063033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19677 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
BUG=328804
LOG=N

Review URL: https://codereview.chromium.org/166023003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19400 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/143153008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19189 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is what I think is a better solution to the "external strings in
old pointer space" problem. Basically, it is an issue because GC scans
all fields of objects in old pointer space and if the cached address
of the backing store is unaligned, it looks like a heap object, boom.

The solution here is to use short external strings when we externalize
a string in old pointer space, and when the address is unaligned.
Short external strings don't cache the address, so GC has no issues.

BUG=268686
LOG=Y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/146183006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/148943004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19054 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Make memento checks more stable. Add filler at the end of new space and check if object and memento are on the same new space page.

BUG=
R=bmeurer@chromium.org, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/152613002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19024 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/151783002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19014 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/149393005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18927 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This adds a fixed array sub-type that will represent a backing store for
typed arrays allocated with TypedArray(length) construtor.

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

Review URL: https://codereview.chromium.org/101413006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18651 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18649 for breaking Linux/nosnap and Win64 tests.

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/140793003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18650 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This adds a fixed array sub-type that will represent a backing store for
typed arrays allocated with TypedArray(length) construtor.

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

Committed: https://code.google.com/p/v8/source/detail?r=18646

Review URL: https://codereview.chromium.org/101413006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18649 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18646 for breaking Win32 build.

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/132233012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18647 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This adds a fixed array sub-type that will represent a backing store for
typed arrays allocated with TypedArray(length) construtor.

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

Review URL: https://codereview.chromium.org/101413006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18646 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Some libraries (e.g. Dinkumware) perform strict checks on whether
the symbols defined in classic C library headers (e.g. <stdio.h>),
or in C++-style C library headers (e.g. <cmath>) are used correctly
(respectively, in the global namespace, or in namespace std).

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/121303005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18578 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/136633002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18565 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This flag will be passed to GC prologue/epilogue callbacks if GC was forced through GC extension.

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

Review URL: https://codereview.chromium.org/104023011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18558 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Pretenuring decisions are made based on allocation site lifetime statistics.

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

Review URL: https://codereview.chromium.org/96783002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18532 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/99133017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18367 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/104903002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18366 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

It was only used for Math.log, and even then only in full code and in %_MathLog. For crankshafted code, Intel already used the FP operations directly, while the ARM/MIPS ports were a bit lazy and simply called the stub. The latter directly call the C library now without any cache. It would be possible to directly generate machine code if somebody has the time, from what I've seen out in the wild it should be only about a dozen instructions.

LOG=y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/113343003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18344 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/104203003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Heap allocation reported to AllocationTracker may be later divided into several objects so it is incorrect to put the block as a new HeapObject into the map. We will match allocated block with actual HeapObjects later when iterating Heap (will be addressed in another patch). Since the objects are not assigned an id immediately after creation we need to call FindOrAddEntry when finding id for SharedFunctionInfo during stack crawling.

Removed hooks for tracking creation of AllocationMemento. AllocationMemento is not a HeapObject and should be considered as implementation overhead.

Renamed NewObjectEvent to AllocationEvent which is more precise in case of folded allocations and when a part of the new block becomes AllocationMemento.

BUG=None
LOG=N
R=loislo@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/95283003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18151 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

code. By the time we optimize the code, we'll be able to decide on new or old
space based on the number of surviving objects after one or more gcs.

The mechanism is a "memento" placed behind objects in the heap. It's currently
done for array and object literals, with plans to use mementos for constructed
objects as well (in a later CL).

The feature is behind the flag allocation_site_pretenuring, currently off.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/40063002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

of intptr_t

This prevents an overflow in FreeArrayBuffer, which in turn caused needless GCs
as well as crashes on isolate teardown.

LOG=Y
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/70233010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17944 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yurys@chromium.org

Review URL: https://codereview.chromium.org/68663002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yurys@chromium.org

Review URL: https://codereview.chromium.org/66683004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17605 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org, ishell@chromium.org

Review URL: https://codereview.chromium.org/66723003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17603 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/30023003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17380 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Second stage of implementing an out-of-line constant pool on Arm.  This CL
Introduces the ConstantPoolArray object which will be used as the backing
store of out-of-line constant pools.  Nothing uses this object yet.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22601003

Patch from Ross McIlroy <rmcilroy@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17197 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This introduces a global weak hash table that maps objects embedded in
optimized code to dependent code lists. Using this table we can deoptimize
optimized code whenever a weak object embedded in the code dies.

BUG=v8:2073
R=hpayer@chromium.org, mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23477061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17102 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Moreover use the right memory boundary for AllocationMemento lookup during gc.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25655004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17069 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

space. This is useful because the unrooted mementos affect heap
decisions like pretenuring mode, and helps to gauge the effectiveness
of allocation-site feedback.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/25273002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17027 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/24302009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16915 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/22925004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16894 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also change a check in heap-inl.h for diagnosing 284577 into an assert.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/24259005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16816 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/24202003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16791 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