Commit Graph

642 Commits

Author SHA1 Message Date
yangguo@chromium.org
5dd51bafef Cache results in SearchRegExpMultiple.
BUG=

Review URL: https://chromiumcodereview.appspot.com/10837290

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12416 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-31 09:28:01 +00:00
jkummerow@chromium.org
f9d4856289 Add a new API V8::SetJitCodeEventHandler to push code name and location to users such as profilers.
BUG=None
TEST=Included in CL.

Committed: https://code.google.com/p/v8/source/detail?r=12389

Review URL: https://chromiumcodereview.appspot.com/10795074
Patch from Sigurður Ásgeirsson <siggi@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12401 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-28 14:43:28 +00:00
verwaest@chromium.org
78037d0a4e Use a special EnumLength field to indicate number of valid enum cache values.
This is preparatory work for sharing Enum Caches.

Review URL: https://chromiumcodereview.appspot.com/10824079

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12400 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-28 14:20:50 +00:00
rossberg@chromium.org
ccc827a6f8 Allocate block-scoped global bindings to global context.
- The global object has a reference to the current global scope chain.
  Running a script adds to the chain if it contains global lexical declarations.
- Scripts are executed relative to a global, not a native context.
- Harmony let and const bindings are allocated to the innermost global context;
  var and function still live on the global object.
  (Lexical bindings are not reflected on the global object at all,
  but that will probably change later using accessors, as for modules.)
- Compilation of scripts now needs a (global) context (previously only eval did).
- The global scope chain represents one logical scope, so collision tests take
  the chain into account.

R=svenpanne@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/10872084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12398 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-28 11:25:08 +00:00
verwaest@chromium.org
a713f82aa6 Revert "Add a new API V8::SetJitCodeEventHandler to push code name and location to users such as profilers."
This reverts commit r12389.

TBR=jkummerow@chromium.org, CC=siggi@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10870108

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12390 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-27 19:47:02 +00:00
jkummerow@chromium.org
0a6493b5a8 Add a new API V8::SetJitCodeEventHandler to push code name and location to users such as profilers.
BUG=None
TEST=Included in CL.

Review URL: https://chromiumcodereview.appspot.com/10795074
Patch from Sigurður Ásgeirsson <siggi@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12389 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-27 18:03:38 +00:00
ulan@chromium.org
7b1d13affc Revert r12342 "Flush monomorphic ICs on context disposal instead of context exit." because of canary channel crashes.
BUG=144230
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10868068

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12388 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-27 16:08:27 +00:00
verwaest@chromium.org
efb53e1499 Make order of addition the primary order of descriptor arrays.
The order by name is maintained as secondary order by using unused bits in the property details.

This is preliminary work towards sharing descriptors arrays.

The change allows us
- to get rid of the LastAdded bits in the map, binding it to the number of valid descriptors for the given map
- to avoid resorting by enumeration index to create the cache
- (maybe in the future, depending on performance) to get rid of the enumeration cache altogether.

Although generally the number_of_descriptors equals the NumberOfOwnDescriptors in the current version, this is preliminary work towards sharing    descriptors, where maps may have more descriptors than are valid for the map.

Review URL: https://chromiumcodereview.appspot.com/10879013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-27 13:47:34 +00:00
rossberg@chromium.org
cd585f26ab Introduce global contexts to represent lexical global scope(s).
They are yet unused; actual allocation of global lexical bindings in these contexts is implemented in a separate follow-up CL.

R=svenpanne@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/10876067

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12384 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-27 09:40:26 +00:00
danno@chromium.org
3544e2e875 Disable speculative LICM when it may lead to unnecessary deopts
BUG=v8:2250
R=vegorov@chromium.org
TEST=tests/mjsunit/regress/regress-2250.js

Review URL: https://chromiumcodereview.appspot.com/10867033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12375 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-23 21:08:58 +00:00
ulan@chromium.org
27fb8c2cf6 Flush monomorphic ICs on context disposal instead of context exit.
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10836189

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12342 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-20 12:09:03 +00:00
rossberg@chromium.org
984d0b0925 Rename Context::global to Context::global_object,
in preparation for global lexical scope.

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10832365

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12335 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-17 12:59:00 +00:00
rossberg@chromium.org
42552808ab Rename "global context" to "native context",
in anticipation of the upcoming lexical global scope.

Mostly automatised as:

for FILE in `egrep -ril "global[ _]?context" src test/cctest`
do
  echo $FILE
  sed "s/Global context/Native context/g" <$FILE >$FILE.0
  sed "s/global context/native context/g" <$FILE.0 >$FILE.1
  sed "s/global_context/native_context/g" <$FILE.1 >$FILE.2
  sed "s/GLOBAL_CONTEXT/NATIVE_CONTEXT/g" <$FILE.2 >$FILE.3
  sed "s/GlobalContext/NativeContext/g" <$FILE.3 >$FILE
  rm $FILE.[0-9]
done

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10832342

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12325 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-17 09:03:08 +00:00
verwaest@chromium.org
d53de0590a Swapped transition array and descriptor array.
Now a map points to a transition array which contains the descriptor array. The descriptor array is now immutable. The next step is to share the descriptor array with all back-pointed maps as long as there is a single line of extension. Maps that require a descriptor array but don't need transitions will still need a pseudo-empty transition array to contain the descriptor array.

Review URL: https://chromiumcodereview.appspot.com/10816005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-13 08:43:16 +00:00
mstarzinger@chromium.org
8c51d61b7a Fix compile failure on Win64 introduced in r12291.
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10855102

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12293 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-10 14:21:46 +00:00
mstarzinger@chromium.org
8fdd8cefc4 Add histograms for total allocated/live heap size, as well as allocated size and percentage of total for map and cell
BUG=none
TEST=none
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10854043
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12291 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-10 13:09:31 +00:00
ulan@chromium.org
b4fd9de1f0 Adjust GC tracing: add a flag to ignore scavenger traces and print total GC time in verbose mode.
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10536147

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12267 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-07 08:19:11 +00:00
erik.corry@gmail.com
92f30d1df5 Improve load IC so it can call a native accessor even if the holder is
in dictionary mode.  Add a flag to all maps to indicate whether they are
used for dictionary (normalized) objects or fast mode objects.
Review URL: https://chromiumcodereview.appspot.com/10831153

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12264 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-06 14:25:19 +00:00
ulan@chromium.org
b49b32599b Make AdjustAmountOfExternalAllocatedMemory() more robust.
Do not crash if called from a thread without V8 isolate, reset the external
memory counters in case of overflow, bump the external allocation limit.

This will allow us to track typed array allocation and deallocation in WebKit.

BUG=v8:2022,122097,42342
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10837122

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-08-06 13:49:13 +00:00
erik.corry@gmail.com
8d96a0190c Fix deserializer to understand direct pointers from code to cell payloads.
The deoptimizer generates full-code-generator code and relies on it having
the same layout as last time.  This means that the code the full code
generator makes for the snapshot should be the same as the code it makes
later.  This change makes the full code generator create more consistent
code between mksnapshot time and run time.

This is a bug fix and a step towards making the snapshot code more robust.
Review URL: https://chromiumcodereview.appspot.com/10824084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-31 09:25:23 +00:00
mstarzinger@chromium.org
fdb22ea2ed Implement TracePathToObjectFrom helper for debugging.
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10823054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-30 10:32:54 +00:00
verwaest@chromium.org
bcc175ad43 Extending map verification to also verify LastAdded/DescriptorArray consistency.
Removed ASSERT now subsumed by extended map verification.

Review URL: https://chromiumcodereview.appspot.com/10827037

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12204 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-26 14:55:22 +00:00
verwaest@chromium.org
1c7aa4d172 Set LastAdded to kNoneAdded in RawCopy.
This ensures it is properly initialized if no descriptors are later set.

Review URL: https://chromiumcodereview.appspot.com/10833033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12202 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-26 13:48:34 +00:00
danno@chromium.org
0fb5189a32 Refine object stats for FixedArrays.
R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10797008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-20 14:06:24 +00:00
sanjoy@chromium.org
693c7643d2 Optimize functions on a second thread.
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10807024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12148 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-19 18:58:23 +00:00
verwaest@chromium.org
52bfb2a18e Moved lastadded from DescriptorArray to Map. Renamed kLastAdded to kEnumCache.
Review URL: https://chromiumcodereview.appspot.com/10802034

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12146 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-19 14:45:19 +00:00
verwaest@chromium.org
f99dda8dab Let DescriptorArray::Append insert at proper position, avoiding need for resorting.
Using insertion-sort won't have too much of an overhead for the short arrays for bootstrapping (which are probably snapshot anyway).
CopyAppendCallbackDescriptors was extending and sorting the array in a loop. By using an append that inserts at the right position we do not need to resort in each iteration.

Additionally remove Sort and rename SortUnchecked to Sort. The IsSortedNoDuplicates check is moved into InitializeDescriptor.

Review URL: https://chromiumcodereview.appspot.com/10808011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12136 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-18 15:38:58 +00:00
sanjoy@chromium.org
71618ee6aa The deferred handes list belongs to the Isolate and not to the
HandleScopeImplementer (since it isn't something specific to a
particular thread executing on an Isolate). This patch ensures correct
traversal of the handles when when multiple compilations are queued
up.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10778036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12134 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-18 14:15:02 +00:00
danno@chromium.org
56cff630af Fix Win64 build
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10790030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-17 14:04:41 +00:00
verwaest@chromium.org
d8c7a03a3a Grouping all map creation code.
- Now tunnel all descriptor changes through methods on the map
- Renamed CopyDropTransitions to regular Copy since we always "drop transitions" on copy anyway.
- Merged and moved elements transition map creation.

Review URL: https://chromiumcodereview.appspot.com/10780031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12105 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-17 13:50:19 +00:00
danno@chromium.org
1ab272ab36 Track counts/sizes of CODE sub types with --track-gc-object-stats
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10792014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-17 11:58:49 +00:00
mstarzinger@chromium.org
77ccfe895c Add histogram for total heap fragmentation, don't report fragmentation for new space, and report fragmentation, not usage
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10778009
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-16 15:17:00 +00:00
verwaest@chromium.org
11e5c9e281 Removed transitions from the accessor pair descriptors.
AccessorPair related transitions are now also stored as single map links, simplifying the code that handles transitions. AccessorPairs can now be shared between descriptor arrays, since they can only be mutated after another transition anyway; during which the pair is copied before writing.

Review URL: https://chromiumcodereview.appspot.com/10784014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12097 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-16 14:02:50 +00:00
mstarzinger@chromium.org
7337068605 Fix Win64 build breakage in r12082.
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10704224

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-16 09:39:52 +00:00
danno@chromium.org
aae81e125b Add counters that automatically track object sizes and counts.
Review URL: https://chromiumcodereview.appspot.com/10702168

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-13 12:22:09 +00:00
mstarzinger@chromium.org
add296dd43 Factor out a Histogram class from HistogramTimer, and use it to measure external fragmentation
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10695056
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-13 12:12:09 +00:00
verwaest@chromium.org
ef701cb7ba Refactor copying of maps and descriptor arrays.
Mainly ensure we don't copy descriptor arrays we'll throw away immediately afterwards.

Review URL: https://chromiumcodereview.appspot.com/10700160

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12044 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-11 14:29:16 +00:00
verwaest@chromium.org
b008d99b11 Ensure that all descriptors have a valid enumeration index, and replace NextEnumIndex with LastAdded.
The LastAdded points to the descriptor that was last added to the array. From the descriptor we can deduce the NextEnumerationIndex. This allows us to quickly find the property that we are transitioning to, which is necessary for transition-intensive code, eg JSON parsing.

Review URL: https://chromiumcodereview.appspot.com/10695120

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12042 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-11 14:26:42 +00:00
verwaest@chromium.org
45419ee145 Swap bitfield3 and backpointer.
Bitfield3 now has its own field, while the backpointer shares the field with the descriptor array; which will become the transition array.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10692130

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-10 13:31:36 +00:00
mstarzinger@chromium.org
97cbaec08a Add OS::GetCurrentProcessId and prepend output from trace-gc with the current pid
BUG=none
TEST=manual

Review URL: https://chromiumcodereview.appspot.com/9817002
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12032 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-10 12:52:36 +00:00
verwaest@chromium.org
75407ae2b7 Moving prototype transitions into the header of the transition array.
Review URL: https://chromiumcodereview.appspot.com/10692026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12022 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-10 07:53:00 +00:00
rossberg@chromium.org
98db1a369d Implement proper module linking.
Specifically:

- In parser, check that all exports are defined.
- Move JSModule allocation from parser to scope resolution.
- Move JSModule linking from full codegen to scope resolution.
- Implement module accessors for exported value members.
- Allocate module contexts statically along with JSModules
  (to allow static linking), but chain them when module literal is evaluated.
- Make module contexts' extension slot refer to resp. JSModule
  (makes modules' ScopeInfo accessible from context).
- Some other tweaks to context handling in general.
- Make any code containing module literals (and thus embedding
  static references to JSModules) non-cacheable.

This enables accessing module instance objects as expected.
Import declarations are a separate feature and do not work yet.

R=mstarzinger@chromium.org
BUG=v8:1569
TEST=

Review URL: https://chromiumcodereview.appspot.com/10690043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12010 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-09 08:59:03 +00:00
mstarzinger@chromium.org
6902028445 Expose more detailed memory statistics
Expose allocated and used byte counters for the different spaces. The goal is
to monitor those values both on page cycles and via UMA

BUG=v8:2201
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10657022
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11931 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-26 11:46:16 +00:00
ulan@chromium.org
390580e49f Use correct size of objects in PrintShortHeapStatistics.
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10579041

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11921 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-25 12:51:03 +00:00
ulan@chromium.org
781484365b Revert r11835 'Unify promotion and allocation limit computation' due to V8 Splay performance regression on Mac.
R=mstarzinger@chromium.org
BUG=134183

Review URL: https://chromiumcodereview.appspot.com/10664013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11916 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-25 09:14:47 +00:00
ulan@chromium.org
3372b08cb0 Adjust idle notification handler to do full GC at the end of idle round in order to compact code space.
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10639002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11900 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-22 08:33:43 +00:00
erikcorry
458e87fd05 Snapshots: Add --extra-code flag to mksnapshot which lets you specify a file
with more JS code that is loaded into the VM before writing the snapshot.  Get
rid of the hard coded limit on the partial snapshot cache size.  This change
disables most of the serializer tests for the snapshot build of the VM: It's
getting too complicated to support both booting from a snapshot and then
creating a new snapshot from the same VM or loading more code with another
snapshot in the same VM.
Review URL: http://codereview.chromium.org/10574013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11871 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-19 18:38:03 +00:00
ulan@chromium.org
b072e6156b Unify promotion and allocation limit computation.
BUG=129628
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10552002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11835 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-15 13:48:54 +00:00
danno@chromium.org
dee723df12 Reset the path tracer completely, and check whether an object has source code before trying to print
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/9749008
Patch from Jochen Eisigner <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11822 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-14 15:33:15 +00:00
fschneider@chromium.org
bb0a2ea766 Share optimized code for closures.
Each SharedFunctionInfo gets an optimized code map to store
one optimized code object per context. When allocating a new
closure we consult this map and check if there is optimized code
that can be shared.

This patch is based on an original patch
by Anton Muhin (http://codereview.chromium.org/6793013/).

BUG=v8:2087, v8:2094
TEST=test/mjsunit/compiler/optimized-closures.js
Review URL: https://chromiumcodereview.appspot.com/10103035

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11817 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-14 14:06:22 +00:00