Commit Graph

723 Commits

Author SHA1 Message Date
verwaest@chromium.org
1068916b9c When we find an accessor pair as TRANSITION, we are sure it doesn't contain an accessor yet.
Review URL: https://chromiumcodereview.appspot.com/10704185

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12065 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-12 15:10:55 +00:00
verwaest@chromium.org
1132b27e25 Always return failure when we didn't manage to add transitions.
Review URL: https://chromiumcodereview.appspot.com/10704183

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12063 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-12 15:01:39 +00:00
verwaest@chromium.org
0a41b8c2ed Splitting DescriptorArray::CopyInsert into CopyInsert, CopyAdd and CopyReplace.
Review URL: https://chromiumcodereview.appspot.com/10743003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-12 13:34:02 +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
09bfdabd2a Fix inline constructors for Harmony Proxy prototypes.
R=rossberg@chromium.org
BUG=v8:2225
TEST=mjsunit/regress/regress-2225

Review URL: https://chromiumcodereview.appspot.com/10736009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12028 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-10 11:28:33 +00:00
verwaest@chromium.org
1007696cdb After transitioning to constant function, return the constant function as result of the assignment.
BUG=v8:2226
TEST=test/mjsunit/regress/regress-2226.js

Review URL: https://chromiumcodereview.appspot.com/10700137

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12024 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-10 09:31:30 +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
mstarzinger@chromium.org
16fa5ceb7b Fix missing handle scope in recent r12001.
R=yangguo@chromium.org
BUG=v8:2219
TEST=webkit:fast/dom/inline-event-attributes-release.html

Review URL: https://chromiumcodereview.appspot.com/10701108

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12004 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-06 16:03:18 +00:00
mstarzinger@chromium.org
026f179b34 Fix unhandlified code calling Harmony Proxy traps.
R=rossberg@chromium.org
BUG=v8:2219
TEST=mjsunit/regress/regress-2219

Review URL: https://chromiumcodereview.appspot.com/10703103

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12001 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-06 11:34:22 +00:00
verwaest@chromium.org
6139bafd28 Also in ClearNonLiveTransitions we have to check if there still is a transition array before we access it.
This should never happen in the long run, but will happen when maps still have a back-pointer while the forward pointer (the transition) was overwritten.

Review URL: https://chromiumcodereview.appspot.com/10704109

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12000 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-06 10:02:15 +00:00
verwaest@chromium.org
d7a5b7d5e2 Separating transitions from descriptors.
In this design maps contain descriptor arrays, which in turn can contain transition arrays. If transitions are needed when no descriptor array is present, a descriptor array without real descriptors is inserted just so it can point at the transition array.

The transition array does not contain details about the field it transitions to. In order to weed out transitions to FIELDs from CONSTANT_FUNCTION (what used to be MAP_TRANSITION vs CONSTANT_TRANSITION), the transition needs to be followed and the details need to be looked up in the target map. CALLBACKS transitions are still easy to recognize since the transition targets are stored as an AccessorPair containing the maps, rather than the maps directly.

Currently AccessorPairs containing a transition and an accessor are shared between the descriptor array and the transition array. This simplifies lookup since we only have to look in one of both arrays. This will change in subsequent revisions, when descriptor arrays will become shared between multiple maps, since transitions cannot be shared.

Review URL: https://chromiumcodereview.appspot.com/10697015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11994 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-07-05 13:54:20 +00:00
mstarzinger@chromium.org
3fd25c6cbc Fix missing slot recording in transition compaction.
R=verwaest@chromium.org
TEST=cctest/test-api/Threading2

Review URL: https://chromiumcodereview.appspot.com/10658033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11930 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-26 11:25:28 +00:00
mstarzinger@chromium.org
362381c68d Fix Harmony Maps and WeakMaps for undefined values.
R=rossberg@chromium.org
BUG=chromium:132744
TEST=mjsunit/harmony/collections

Review URL: https://chromiumcodereview.appspot.com/10658014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11924 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-25 13:33:48 +00:00
verwaest@chromium.org
68c944c265 In-place shrinking of descriptor arrays with non-live transitions.
Instead of overwriting non-live transitions with NULL_DESCRIPTORs, we remove them from the array by compacting the array (shifting live values to the left) and in-place trimming the array. If the final descriptor array contains no live values (only contained transitions which are now all cleared), we move bit_field3 back from the descriptor array to the map. The descriptor array itself will be collected in the next GC.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10575032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11922 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-25 13:10:54 +00:00
verwaest@chromium.org
41560e9f5f Separate stub types from property types.
Review URL: https://chromiumcodereview.appspot.com/10656018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11920 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-25 11:35:23 +00:00
mstarzinger@chromium.org
84b866b2d9 Fix sharing of literal boilerplates for optimized code.
This makes sure the literal boilerplates array is correctly shared
together with optimized code when caching of optimized code is enabled.
It also enabled said caching by default again.

R=ulan@chromium.org
BUG=v8:2193
TEST=mjsunit/regress/regress-2193

Review URL: https://chromiumcodereview.appspot.com/10649008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11911 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-22 13:55:15 +00:00
verwaest@chromium.org
1cff0c498e Cleaning up usage of lookup results.
- Ensure that IsFound() is only used when not in combination with other
  checks. To do so, the default type is NONEXISTENT rather than NORMAL;
  and NotFound() also resets the type to NONEXISTENT.
- Use test methods rather than .type() == A_PROPERTY_TYPE.

Review URL: https://chromiumcodereview.appspot.com/10626004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11899 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-21 15:32:52 +00:00
sanjoy@chromium.org
9e4fbb45c1 One Zone per CompilationInfo.
The CompilationInfo record now saves a Zone, and the compiler pipeline
allocates memory from the Zone in the CompilationInfo.  Before
compiling a function, we create a Zone on the stack and save a pointer
to that Zone to the CompilationInfo; which then gets picked up and
allocated from.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10534139

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11877 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-20 08:58:41 +00:00
mstarzinger@chromium.org
a760b82cab Enable lazy compilation for non-trivial outer contexts.
This changes the compiler to be more aggressive about lazy compilation
of closures with non-trivial outer context. Compilation can only be
triggered with a valid outer context now. One exception is the debugger,
which can request compilation of arbitrary shared code, but it ensures
to trigger compilation only at points where no context is needed.

This relands r11782, r11783, r11790 and a minor fix.

R=ulan@chromium.org
TEST=mjsunit/debug-script-breakpoints-nested

Review URL: https://chromiumcodereview.appspot.com/10543141

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11866 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-19 14:29:48 +00:00
verwaest@chromium.org
30b335157f Fixing ClearNonLiveTransition bug in combination with AccessorPairs.
BUG=133211
TEST=test/mjsunit/regress/regress-133211b.js

Review URL: https://chromiumcodereview.appspot.com/10575018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11860 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-19 13:16:39 +00:00
mstarzinger@chromium.org
928a1bff32 Fix handling of numbers in SameValue method.
R=vegorov@chromium.org
BUG=v8:2186
TEST=mjsunit/regress/regress-2186

Review URL: https://chromiumcodereview.appspot.com/10532198

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11853 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-18 14:21:29 +00:00
verwaest@chromium.org
8aca22b1ef Implementing weak referencing elements transition maps.
Review URL: https://chromiumcodereview.appspot.com/10559032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11842 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-18 11:43:09 +00:00
verwaest@chromium.org
49ad5bdf5d Fixing bugs in promotion of elements transitions (r1175).
- Fixed invalid memory access when reading enum-cache from descriptor array with elements transitions but 0 real descriptors.
- Fixed infinite recursion in the intrusive map iterator when visiting elements transitions.
- Properly cached non-fastmode elements transitions.

Review URL: https://chromiumcodereview.appspot.com/10565030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11841 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-18 11:16:02 +00:00
jkummerow@chromium.org
635382e16e Remove unused-but-set variable from objects.cc.
This fixes compilation with newer GCCs.

R=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/10568006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11838 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-18 08:28:32 +00:00
erik.corry@gmail.com
045b2fbf20 Revert part of 11727 as it sometimes tanked V8 benchmark (raytrace) performance
for reasons that are not obvious.  Now we make objects into fast-case objects
when they are made prototypes for other objects, but we do not mark objects
that are already fast case with a bit that helps keep them in fast case.
Review URL: https://chromiumcodereview.appspot.com/10556004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11831 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-15 11:53:09 +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
mstarzinger@chromium.org
90c2448be6 Fix assertion for map code cache of shared maps.
R=danno@chromium.org
TEST=mjsunit/compare-known-objects-slow

Review URL: https://chromiumcodereview.appspot.com/10548046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11815 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-14 13:54:23 +00:00
mstarzinger@chromium.org
74ab92e0ac Fix performance regression caused by r11202.
R=erik.corry@gmail.com
BUG=v8:2156,v8:2034
TEST=mjsunit/regress/regress-2156,mjsunit/regress/regress-2034

Review URL: https://chromiumcodereview.appspot.com/10539131

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11800 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-13 11:58:18 +00:00
mstarzinger@chromium.org
9edaa1536b Revert r11782, r11783 and r11790 due to Webkit failures.
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10536142

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11796 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-13 11:26:34 +00:00
mstarzinger@chromium.org
19ece2bec8 Enable lazy compilation for non-trivial outer contexts.
This changes the compiler to be more aggressive about lazy compilation
of closures with non-trivial outer context. Compilation can only be
triggered with a valid outer context now. One exception is the debugger,
which can request compilation of arbitrary shared code, but it ensures
to trigger compilation only at points where no context is needed.

R=ulan@chromium.org
TEST=mjsunit/debug-script-breakpoints-nested

Review URL: https://chromiumcodereview.appspot.com/10538102

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11782 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-12 15:57:50 +00:00
danno@chromium.org
92716a157f Optimization of some packed array cases.
R=jkummerow@chromium.org
TEST=slight improvement in 3d-morph

Review URL: https://chromiumcodereview.appspot.com/10538104

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11777 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-12 15:30:16 +00:00
ulan@chromium.org
75a1fa91ef Reland r11425 "Re-enable optimization for hot functions that have optimization disabled due to many deopts."
Fix performance regressions introduced in r11425 by
- counting number of function deoptimizations instead of function optimizations,
- packing several counters into one field of shared function info.

BUG=v8:2040,121196
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10534063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11766 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-11 16:57:27 +00:00
verwaest@chromium.org
2b574ef580 Promoting elements transitions to their own field.
This is a first step towards separating all transitions from the property descriptions. If we link the property descriptions from the transition object, this will in allow the descriptor array (property descriptions) to become immutable.

Review URL: https://chromiumcodereview.appspot.com/10444055

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11750 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-11 06:59:56 +00:00
danno@chromium.org
4e525b85fc Optimistically assume that elements IC only transition once.
Thanks to Zheng Liu for identifying this issue.

R=jkummerow@chromium.org
BUG=v8:2141
TEST=test/mjsunit/elements-kind.js

Review URL: https://chromiumcodereview.appspot.com/10532063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11739 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-08 13:06:24 +00:00
mstarzinger@chromium.org
81e8aa0016 Implement implicit instance checks for API accessors.
This allows to specify a constructor against which an implicit instance
check is performed for API accessors. If the receiver is incompatible,
an implicit TypeError is thrown and no callback is invoked.

R=svenpanne@chromium.org
BUG=v8:2075
TEST=cctest/test-api/InstanceCheckOn[*]

Review URL: https://chromiumcodereview.appspot.com/10442129

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11734 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-08 07:45:11 +00:00
erik.corry@gmail.com
657422c29a Use the syntax of a property addition as a hint for controlling the fast-mode vs. dictionary mode heursitics on objects.
Review URL: https://chromiumcodereview.appspot.com/10537050

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11732 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-07 12:08:07 +00:00
erik.corry@gmail.com
911d447b96 Keep track of which maps are associated with prototype objects so we can tune the fast-case vs. hash map heuristics accordingly.
This is a reland of r11681 https://chromiumcodereview.appspot.com/10448011 , which was reverted because of layout test failures that were actually caused by the long-standing issue fixed in https://chromiumcodereview.appspot.com/10515006 (r11706).
Review URL: https://chromiumcodereview.appspot.com/10532021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-06 10:17:26 +00:00
rossberg@chromium.org
4ea1fc0d27 Remove one more case behind --es5_readonly flag.
Plus add a couple of assertions.

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10535011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-05 16:56:53 +00:00
rossberg@chromium.org
c13dd2ece6 Put inherited readonliness behind a flag,
since it currently breaks WebKit bindings massively.

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10535007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-05 12:39:07 +00:00
verwaest@chromium.org
a85f4e4226 ClearNonLiveTransitions has to hold on to non-map values.
This ensures that we don't accidentally throw away getters and/or setters that are still needed. To make sure the bug gets triggered, we have to construct a situation where the map is on the live side of a live->non-live transition. This ensures that the map is passed to ClearNonLiveTransitions.

BUG=v8:2163
TEST=test/mjsunit/regress/regress-2163.js

Review URL: https://chromiumcodereview.appspot.com/10535004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-05 11:36:57 +00:00
erik.corry@gmail.com
0a856e0bd7 Fix bug in __proto__ assignment transition cache where we forget the next enumeration index resulting in wrong iteration order.
Review URL: https://chromiumcodereview.appspot.com/10515006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11706 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-04 12:07:46 +00:00
verwaest@chromium.org
98c37e1f4c Merging ContentArray into DescriptorArray
Review URL: https://chromiumcodereview.appspot.com/10412030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-04 07:20:11 +00:00
rossberg@chromium.org
e4c472a7af Implement correct checking for inherited readonliness on assignment.
Removes 6 out of 8 of our remaining unintentional failures on test262.

Also fixes treatment of inherited setters added after the fact.

Specifically:

- In the runtime, when looking for setter callbacks in the prototype chain,
  also look for read-only properties. If one is found, reject (exception in
  strict mode). If a proxy is found, invoke proper trap.
  Note: this folds in the CanPut function from the spec and avoids an extra
  lookup over the prototype chain.

- In generated code for stores, insert a test for the maps from the prototype
  chain, but only up to the object where the property already exists (which
  may be the object itself).
  In Hydrogen, if the found property is read-only or not cacheable (e.g. a
  proxy), bail out; in a stub, generate an unconditional miss (to get an
  exception in strict mode).

- Add test cases and adapt existing test expectations.

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10388047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11694 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-01 10:51:36 +00:00
verwaest@chromium.org
dd54b0acf7 ClearNonLiveTransitions indepedent of ContentArray
Review URL: https://chromiumcodereview.appspot.com/10387231

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11693 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-01 09:12:01 +00:00
erik.corry@gmail.com
b7b43e9af9 Revert r11681 https://chromiumcodereview.appspot.com/10448011
(Keep track of which maps are associated with prototype objects so we can tune the fast-case vs. hash map heuristics accordingly.).
Reverting because the dict-mode to fast case transformation loses the iteration order information.
Review URL: https://chromiumcodereview.appspot.com/10448097

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11685 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-31 09:27:39 +00:00
verwaest@chromium.org
75f35d3fe1 Decoupling MarkDescriptorArray as much as possible from the ContentArray.
Review URL: https://chromiumcodereview.appspot.com/10417030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-30 15:15:17 +00:00
verwaest@chromium.org
3a2d4c88f4 TraversableMap only dependent on DescriptorArray
This is the first step towards merging the ContentArray into the DescriptorArray, (hence reclaiming 3 words per descriptor array).

Review URL: https://chromiumcodereview.appspot.com/10455005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11682 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-30 14:54:00 +00:00
erik.corry@gmail.com
8cf2af4392 Keep track of which maps are associated with prototype objects
so we can tune the fast-case vs. hash map heuristics accordingly.
Review URL: https://chromiumcodereview.appspot.com/10448011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11681 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-30 14:40:57 +00:00