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Author SHA1 Message Date
rossberg@chromium.org
958b3bf470 Parsing of basic module declarations (no imports/exports yet). 
Module definitions are not compiled or otherwise executed yet.
Toplevel module identifiers are bound but never initialized.

R=kmillikin@chromium.org,mstarzinger@google.com
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9401008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-20 14:02:59 +00:00
jkummerow@chromium.org
0177aa62da Count ICs that have type information. 
Hidden behind --type-info-threshold=X flag, usage dependent on experimental profiler.

Review URL: https://chromiumcodereview.appspot.com/9403009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-20 12:57:23 +00:00
svenpanne@chromium.org
77079b6fd3 Avoid sharing AccessorPairs during Genesis. 
To test the upcoming changes for map sharing in the presence of accessors, it is
essential that we keep a few global invariants: The map tree should always stay
a tree and AccessorPairs should not be shared between different DescriptorArrays
and/or StringDictionaries. This CL adds a test method for the latter invariant
and makes some changes to the bootstrapping process to avoid such sharing.

Note that we can't enable the new test method permanently yet, because we
currently go back and forth between fast mode and slow mode when adding an
accessor and break this invariant temporarily. This will be handled in a
separate CL.

Review URL: https://chromiumcodereview.appspot.com/9417043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10744 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-20 08:42:18 +00:00
yangguo@chromium.org
b21ada9a98 Remove unnecessary elements type check when allocating array in runtime. 
BUG=
TEST=--smi-only-arrays should be perf-neutral to allocating big arrays in a tight loop.

Review URL: https://chromiumcodereview.appspot.com/9356002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-15 12:13:55 +00:00
danno@chromium.org
f0c4b87f34 Implement KeyedStoreICs to grow arrays on out-of-bound stores. 
Supports growing non-COW JSArray by a single element if the backing store has room, and initial allocation of a backing store for the store to index zero of an empty array  to kPreallocatedArrayElements elements (e.g. the [] array literal).

Review URL: https://chromiumcodereview.appspot.com/9310117

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10673 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-10 12:36:05 +00:00
jkummerow@chromium.org
de510c3a58 Split experimental profiler flags 
Review URL: https://chromiumcodereview.appspot.com/9374015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-09 13:30:01 +00:00
jkummerow@chromium.org
aa2e842134 Count-based profiling for primitive functions (hidden behind a flag) 
Review URL: https://chromiumcodereview.appspot.com/9361026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10657 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-09 10:19:46 +00:00
erik.corry@gmail.com
53c6838cce Remove 5 unused flags. 
Review URL: https://chromiumcodereview.appspot.com/9362014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10646 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-08 15:39:41 +00:00
jkummerow@chromium.org
d795b7c620 Collect AstNode type information 
Review URL: https://chromiumcodereview.appspot.com/9221011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10631 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-08 09:56:33 +00:00
yangguo@chromium.org
364e864ad2 Add timestamp to --trace-gc output. 
BUG=v8:1932
TEST=

Review URL: https://chromiumcodereview.appspot.com/9307116

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10604 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-06 08:59:43 +00:00
vegorov@chromium.org
a7b0481b6d Tweak compaction candidate selection to avoid keeping page with low occupancy around. 
Increase slots buffer chain length to 15 to make compaction more aggressive and usefull.

Pass gc and collector selection reasons to GCTracer to allow more meaningull --gc-trace.

Print fragmentation of spaces that we do not compact.

R=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/9323007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-03 14:16:40 +00:00
vegorov@chromium.org
6f20db9767 Extend --trace-gc to output amount of memory reserved for V8 heap. 
This allows one to spot fragmentation issues just by looking at --trace-gc output.

R=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/9316060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-02 11:47:23 +00:00
erik.corry@gmail.com
3cfac4da0a Revert memory saving change due to failures on multithreaded tests 
on Windows.
Review URL: https://chromiumcodereview.appspot.com/9104039

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10569 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-31 13:33:44 +00:00
erik.corry@gmail.com
f5feac9e98 Reduce memory use immediately after boot. 
This is a recommit of https://chromiumcodereview.appspot.com/9289047
with changes noted in comments in the codereview tool.
Review URL: https://chromiumcodereview.appspot.com/9233050

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10562 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-31 11:22:35 +00:00
erik.corry@gmail.com
a9428d2bcc Revert 10542 (boot time memory reduction) due to map alignment 
issues on 64 bit.
Review URL: https://chromiumcodereview.appspot.com/9295047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10544 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-30 10:20:13 +00:00
erik.corry@gmail.com
419ea5fcc3 Reduce boot-up memory use of V8. 
This is a recommit of http://codereview.chromium.org/9179012
after fixing what turned out to be unrelated out-of-memory
errors.
That was a rebase of http://codereview.chromium.org/9017009/
Review URL: https://chromiumcodereview.appspot.com/9289047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10542 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-30 09:15:34 +00:00
mstarzinger@chromium.org
8c12b6b743 Implement target cache for constructor calls. 
This caches call targets of constructor calls by associating one element
caches with call sites. The type feedback oracle can use the recorded
valued to gather type information for monomorphic constructor call sites.

R=kmillikin@chromium.org,vegorov@chromium.org

Review URL: https://chromiumcodereview.appspot.com/8932004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10531 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-27 13:03:19 +00:00
danno@chromium.org
57525ef893 Store transitioned JSArray maps in global context 
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9073007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10523 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-26 21:47:57 +00:00
erik.corry@gmail.com
448b6bbc41 Flush number string cache on GC (bug 1605). Also start with a small 
number string cache and only grow it if needed, which will be useful
for saving boot time memory use.
This is a second try for  https://chromiumcodereview.appspot.com/923502
after fixing an unrelated stack overflow issue.
Review URL: https://chromiumcodereview.appspot.com/9169080

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10513 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-26 11:32:01 +00:00
erik.corry@gmail.com
248adeb110 Revert 10502 (smaller number string cache) due to test failures. 
Review URL: https://chromiumcodereview.appspot.com/9113060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10504 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-25 15:17:26 +00:00
vegorov@chromium.org
67d72eab45 When preparing heap for breakpoints make sure not to flush away non-optimized code for inlined functions. 
Debug::PrepareForBreakPoints was not fully populating active_functions list.

R=erik.corry@gmail.com
TEST=test/mjsunit/regress/regress-debug-code-recompilation.js

Review URL: https://chromiumcodereview.appspot.com/9290013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10503 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-25 15:11:59 +00:00
erik.corry@gmail.com
a49c8a19ee Flush number string cache on GC (bug 1605). Also start with a small 
number string cache and only grow it if needed, which will be useful
for saving boot time memory use.
Review URL: https://chromiumcodereview.appspot.com/9235029

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10502 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-25 14:27:58 +00:00
mstarzinger@chromium.org
4b913965a9 Fix responsiveness of high promotion mode heuristics. 
This changes the heuristics for the high promotion mode to be checked
on all GCs (including scavenges), so that changes in the applications
behavior are recognized earlier. It also fixes miscalculations in the
survival counter and rate which caused heuristics to fail completely.

R=vegorov@chromium.org
BUG=v8:1899

Review URL: https://chromiumcodereview.appspot.com/9196003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10500 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-25 13:46:42 +00:00
erik.corry@gmail.com
83b439a0f9 Further robustify the keyed lookup cache against unlucky hash 
seeds.  This change is performance neutral on most snapshot
VM builds, but provides a big improvement on string-fasta
on around 5% of builds.
Review URL: https://chromiumcodereview.appspot.com/9193015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10478 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-23 16:18:10 +00:00
vegorov@chromium.org
8c776261c2 Limit number of loop iterations in Heap::ReserveSpace. 
This allows to avoid infinite loops in pathalogical cases e.g. when OS refuses to give new pages to V8.

R=erik.corry@gmail.com
BUG=99027

Review URL: https://chromiumcodereview.appspot.com/8286020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10466 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-20 17:21:26 +00:00
erik.corry@gmail.com
9672a04de2 Fix keyed lookup cache to have 2 entried per bucket instead 
of one in order to reduce collisions.
Review URL: https://chromiumcodereview.appspot.com/9269004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-20 13:43:21 +00:00
jkummerow@chromium.org
3a4bed8a7e Only clear monomorphic ICs on GC after Context exit 
Review URL: https://chromiumcodereview.appspot.com/9255014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-18 16:16:11 +00:00
vegorov@chromium.org
3fd6ba109e When adjusting page's live bytes counter from the mutator adjust owners unswept free bytes counter. 
R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9178021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10426 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-18 09:21:07 +00:00
yangguo@chromium.org
6d0d6a5695 Recursion limit for one-char string replace and retire String::kMinNonFlatLength. 
TEST=mjsunit/string-replace-one-char.js

Review URL: https://chromiumcodereview.appspot.com/9231017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10422 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-17 14:29:17 +00:00
erik.corry@gmail.com
a02dbe4258 Revert 10413-10416 initial memory use reduction due to 
test failures.
Review URL: http://codereview.chromium.org/9178014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10417 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-17 13:13:55 +00:00
erik.corry@gmail.com
3403e76682 Reduce boot-up memory use of V8. 
Reduce signal sender thread stack size to 32k.
Commit partial old-space pages to reduce minimum memory use.
This is a rebase of http://codereview.chromium.org/9017009/
Review URL: http://codereview.chromium.org/9179012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10413 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-17 11:38:25 +00:00
yangguo@chromium.org
a97cebe292 Fast path for string.replace that replaces a single character by a string. 
BUG=
TEST=

Review URL: http://codereview.chromium.org/9213002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10412 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-16 15:21:38 +00:00
erik.corry@gmail.com
70da367f6b More spelling changes. 
Review URL: http://codereview.chromium.org/9231009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10407 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-16 12:38:59 +00:00
erik.corry@gmail.com
40a433c9e0 Split NumberDictionary into a randomly seeded and an unseeded 
version. We don't want to randomize the stub cache.
Review URL: http://codereview.chromium.org/9174023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10402 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-16 09:44:35 +00:00
yurys@chromium.org
ebb75c23a1 Provide a way for iterating through all external strings referenced from the JS heap 
Review URL: http://codereview.chromium.org/9139018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10400 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-13 15:14:45 +00:00
erik.corry@gmail.com
b3e0761e38 Cosmetic changes ("set up" is a verb, "setup" is a noun). 
Review URL: http://codereview.chromium.org/9139051

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10399 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-13 13:09:52 +00:00
svenpanne@chromium.org
73f2f5db68 Use a separate new type AccessorPair for JavaScript callbacks instead of a FixedArray of length 2 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10371 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-10 16:11:33 +00:00
erik.corry@gmail.com
dc9910f4a4 Minor cleanups of numeric seeded hashing patch. 
Review URL: http://codereview.chromium.org/9155010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10367 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-10 13:24:18 +00:00
erik.corry@gmail.com
81a0271004 Randomize the seed used for string hashing. This helps guard against 
CPU-eating DOS attacks against node.js servers.  Based on code from
Bert Belder.  This version only solves the issue for those that compile
V8 themselves or those that do not use snapshots.  A snapshot-based
precompiled V8 will still have predictable string hash codes.
Review URL: http://codereview.chromium.org/9086006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10330 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-04 15:12:15 +00:00
ulan@chromium.org
c2109cdd1e Uncommit free pages in all spaces on low memory notification. 
BUG=v8:1669
TEST=
R=erik.corry@gmail.com

Review URL: http://codereview.chromium.org/8969017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10289 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-21 08:51:59 +00:00
ulan@chromium.org
76b48da7ef Guard against undefined fields in global context. 
BUG=v8:1860
TEST=
R=vegorov@chromium.org

Review URL: http://codereview.chromium.org/8917014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-13 14:20:03 +00:00
ricow@chromium.org
ec66c36fbf Reland 10216 - Optimize the equality check case of ICCompare stubs. 
Now with arm and x64 support. Additionally, added default unreachable case to switch statement in CompareIC::TargetState to make win and mac compilers happy.

Reviewer guide:
This is an exact copy of 10216 except:
src/arm/*
src/x64/*
src/ic.cc (added default case to swith in CompareIC::TargetState)
Review URL: http://codereview.chromium.org/8872060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-09 09:26:14 +00:00
ricow@chromium.org
174532d23f Revert 10216 Optimize the equality check case of ICCompare stubs. 
Missing arm and x64 implementations
Review URL: http://codereview.chromium.org/8883023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10217 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-08 17:28:44 +00:00
ricow@chromium.org
1028cf2631 Optimize the equality check case of ICCompare stubs. 
This includes specialcasing the generation when we know that the maps
of the two objects are the same. In addition, a new specialized
compare ic known objects cache is created.

The reason for the cache is that we need to have access to the stub
code from the roots; if we do not, the GC will collect the stub. In
this specialized case we use the map pointer as key in the cache, and
we always do a lookup before generating code. Actually hitting
something in the cache will happen very rarely, but we could
potentially overwrite an existing stub, which again will lead to the
GC collecting this old stub (even if it is referenced from other code
objects)
Review URL: http://codereview.chromium.org/8520006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10216 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-08 17:17:21 +00:00
erik.corry@gmail.com
c5c32e18ad More removal of write barriers and a rename to a less scary name. 
Review URL: http://codereview.chromium.org/8816020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10186 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-07 08:43:18 +00:00
mikhail.naganov@gmail.com
dae713f0ad Reapply r10158: Distinguish weak references in heap snapshots, group GC roots. 
[Fixed the bug revealed by the Win32 bot]

Several changes to better organize snapshot data:

1. Provide information about weak references.
2. Group (GC roots) children.
3. Prettify debug snapshot printing.

BUG=v8:1832
TEST=cctest/test-heap-profiler/*Weak*
TBR=vitalyr@chromium.org

Initial CL: http://codereview.chromium.org/8716009

Review URL: http://codereview.chromium.org/8822019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10182 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-06 17:41:47 +00:00
ulan@chromium.org
cda5b1a53f Use the old handler for low frequency idle notifications. 
BUG=
TEST=

Review URL: http://codereview.chromium.org/8818005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10179 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-06 14:30:21 +00:00
mikhail.naganov@gmail.com
a0c8ea00db Revert r10158 "Distinguish weak references in heap snapshots, group GC roots." 
Heap profiler tests fail on Win32, need to investigate.

This reverts commit b5374ebd92c11ac4aae16b4e31e54166d406e490.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10162 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-05 17:21:55 +00:00
mikhail.naganov@gmail.com
857aa09772 Distinguish weak references in heap snapshots, group GC roots. 
Several changes to better organize snapshot data:

1. Provide information about weak references.
2. Group (GC roots) children.
3. Prettify debug snapshot printing.

BUG=v8:1832
TEST=cctest/test-heap-profiler/*Weak*

Review URL: http://codereview.chromium.org/8716009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10158 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-05 16:35:57 +00:00
erik.corry@gmail.com
090be8bf15 Reduce minimum memory use on 64 bit to one page per semispace. 
Review URL: http://codereview.chromium.org/8774045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10144 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-02 14:19:53 +00:00