This fixes alignment issues on MIPS HW, found for example in mjsunit external-array.
The issue originates from r11144 (86563c3e21) which adds a 4-byte header to these arrays.
This causes problems on MIPS, where certain pointers need to be 8-byte aligned.

BUG=
TEST=mjsunit/external-array

Review URL: https://chromiumcodereview.appspot.com/9956049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11303 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The idea is to monitor the heap regulary and track each object in the heap.
With this data we will be able do draw heap usage diagram.
Where X is time and Y is the number of objects.

BUG=none
TEST=HeapSnapshotObjectsStats

Review URL: https://chromiumcodereview.appspot.com/10049002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11302 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10067032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11301 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1744, v8:539

Review URL: https://chromiumcodereview.appspot.com/10008082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=kmillikin@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10067017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11299 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=kmillikin@chromium.org
BUG=chromium:119609
TEST=test/mjsunit/regress/regress-119609.js

Review URL: https://chromiumcodereview.appspot.com/10010046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org
BUG=122271
TEST=mjsunit/regress/regress-crbug-122271

Review URL: https://chromiumcodereview.appspot.com/10038010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11286 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

case.
Review URL: http://codereview.chromium.org/10068010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11285 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This makes the test-alloc test case more robust against changes to the
initial heap size. It correctly simulates a full space now instead of
trying to fill the space up by allocating filler objects.

R=svenpanne@chromium.org
TEST=cctest/test-alloc

Review URL: https://chromiumcodereview.appspot.com/10071003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

to the MIPS FPU even when cross-building the snapshot.
This is based on code from Daniel Kalmar from
http://codereview.chromium.org/9910029/
Review URL: https://chromiumcodereview.appspot.com/10068006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11283 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Some GWT compiled code results in array access that has a heap number (e.g. -0)
as an index. Until now this would result in a generic IC.

For example:

a[-0] === a[0] or

a[0.25 * 4] === a[1]

This change detects heap numbers that are representable as a smi
and converts them. As a result we can still use the fast keyed monomorphic
ICs. Optimized code already handles keyed access with a double-key efficiently.

As a result the frame rate on the reported benchmark improves by roughly 2x.

BUG=v8:1388,v8:1295
Review URL: https://chromiumcodereview.appspot.com/9837109

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11282 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port regexp microoptimizations to MIPS.  Also fix some formatting.  This includes http://codereview.chromium.org/9965107/ from Daniel Kalmar

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11281 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9969156

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11280 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes processing of WeakMaps so that keys on evacuation candidates
which are also reachable by other strong paths are correctly recorded in
the slots buffer.

Also backing stores that reside in the large-object-space now use the
correct anchor slot.

R=vegorov@chromium.org
BUG=v8:2060
TEST=cctest/test-weakmaps/Regress2060b

Review URL: https://chromiumcodereview.appspot.com/10034018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- if value is a result of integer32 to double conversion (can't be NaN);

- if value was loaded from fast double backing store (already canonicalized).

R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10054009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11278 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/10050013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11275 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When pushing arguments use correct initial values instead of fetching them from the environment which can be modified.

R=fschneider@chromium.org
TEST=test/mjsunit/compiler/inline-arguments.js

Review URL: https://chromiumcodereview.appspot.com/10033028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11274 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10053011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11273 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change allows hydrogen instructions to keep track of instructions
that dominate certain side-effects (GVN flags) in the hydrogen graph. We
use the GVN pass to keep track of side-effects because accurate flags
are already in place.

It also adds a new side-effect (kChangesNewSpacePromotion) indicating
whether an instruction can cause a GC and have objects be promoted to
old-space. An object allocated in new-space is sure to stay on paths not
having said side-effect.

R=erik.corry@gmail.com
TEST=mjsunit/compiler/inline-construct

Review URL: https://chromiumcodereview.appspot.com/10031031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11270 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10034014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11269 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10053009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11268 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

64 bit architectures.
Review URL: https://chromiumcodereview.appspot.com/10020032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes processing of WeakMaps so that value entries on an evacuation
candidate are correctly recorded in the slots buffer. We didn't pass the
correct slot into the backing hashtable while visiting values.

Also the live bytes counter for large object space pages was not reset
correctly when incremental marking is aborted.

R=vegorov@chromium.org
BUG=v8:2060
TEST=cctest/test-weakmaps/Regress2060

Review URL: https://chromiumcodereview.appspot.com/10034010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11264 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This will give us the ability to keep entries_ list sorted by id.
And based on that fact we will be able to use it for:
1) GetNodeById method and drop sorted version of entries list in HeapSnapshot;
2) building heap stats;
3) doing the fill stage instead of second iteration over heap.

BUG=none
TEST=none
R=yurys

Review URL: https://chromiumcodereview.appspot.com/10031032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Environment structure for such calls is different from normal global calls.

R=fschneider@chromium.org
BUG=chromium:122681

Review URL: https://chromiumcodereview.appspot.com/10024060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We use fstp(0) already in other places. ffree does not pop the stack,
but only marks a FP register as empty.

BUG=v8:2065
Review URL: https://chromiumcodereview.appspot.com/9960066

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10006032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The heap profile generator assumes that for named function expressions, the
name is context allocated.  This is not necessary true.

BUG=v8:2051
TEST=WebKit layout test inspector/profiler/heap-snapshot-inspect-dom-wrapper.html

Review URL: https://chromiumcodereview.appspot.com/9960065

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10024057

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

global regexp after a call to String.prototype.replace
with a function argument sets the last match info
correctly.  Bug=2058
Review URL: http://codereview.chromium.org/10029009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 6e46549d13df2b211ea9b4fac9c09fe5013ec465.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10025014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10007009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mnaganov
Review URL: https://chromiumcodereview.appspot.com/10012040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We can avoid putting all nodes into a hash map from HeapEntry to ID and sorting that map as the nodes are already stored in right order in HeapSnapshot::entries_ list.
Review URL: https://chromiumcodereview.appspot.com/10012013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
TEST=cctest/test-heap/OptimizedAllocationAlwaysInNewSpace

Review URL: https://chromiumcodereview.appspot.com/10010010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11244 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is needed so that we can start removing write-barriers in optimized
code if we can prove that the receiver object is always in new-space.

TEST=cctest/test-heap/OptimizedAllocationAlwaysInNewSpace

Review URL: https://chromiumcodereview.appspot.com/10008007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This allows compilation of V8 using uClibc.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9702067
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r11010 (1daa81bc).

MIPS-specific changes:
-register codes and registers are defined using a macro to avoid redundancy
-renamed s8_fp to fp, removed the "fp" alias
-removed kSavedValueRegister (found by check-static-initializers.sh)

Original commit message:

Landing for pliard@chromium.org: Remove static initializers in v8.

This change includes two CLs by pliard@chromium.org:

1. http://codereview.chromium.org/9447052/ (Add CallOnce() and simple LazyInstance implementation):

Note that this implementation of LazyInstance does not handle global destructors (i.e. the lazy instances a

This CL was initially reviewed on codereview.appspot.com:
http://codereview.appspot.com/5687064/

2.  http://codereview.chromium.org/9455088/ (Remove static initializers in v8):
This CL depends on CL 9447052 (adding CallOnce and LazyInstance).
It is based on a patch sent by Digit.

With this patch applied, we have only one static initializer left (in atomicops_internals_x86_gcc.cc). This

This CL also modifies the presubmit script to check the number of static initializers.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9689069
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11241 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The template system converts the actual struct type to an array of chars.
Make sure the alignment is kept by the compiler.

This fixes a lot of serialization-related HW tests, for example cctest test-serialize/Serialize.

BUG=
TEST=cctest test-serialize

Review URL: https://chromiumcodereview.appspot.com/9702114
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=118686

Review URL: https://chromiumcodereview.appspot.com/9976003
Patch from Philippe Liard <pliard@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11239 ce2b1a6d-e550-0410-aec6-3dcde31c8c00