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122 Commits

Author SHA1 Message Date
danno@chromium.org
a6bc16b6f3 Add StubFailureTrampolineFrames 
In preparation of supporting stubs that deopt and then need to push their
register-based parameters to an arguments area on the stack that gets properly
collected, add StubFailureTrampolineFrames to hold those parameters.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12052053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13533 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-29 09:12:20 +00:00
yangguo@chromium.org
3c22524119 Avoid handle dereference during graph optimization. 
With parallel recompilation enabled, objects made accessible by handles may
have changed between graph construction and graph optimization. Therefore
we must not assume that information on those objects remain the same between
those two phases. To police this, we forbid handle dereferencing during
graph optimization.
Exceptions to this rule are:
 - Dereferencing the handle to obtain the raw location of the object. This
   is safe since parallel recompilation acquires RelocationLock
 - Some places that dereference the handle for a type check. These are checked
   to be safe on a case-by-case basis.

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/12049012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13475 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-23 13:52:00 +00:00
yangguo@chromium.org
284a28e797 Temporarily disable deferred stack trace formatting. 
R=mstarzinger@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11859027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-18 13:05:03 +00:00
svenpanne@chromium.org
fab9a39d9d Make the Isolate parameter mandatory in Locker and Unlocker classes. 
Note that leaving out the Isolate parameter previously had a very special
meaning, namely "use the *default* Isolate", i.e. the one magically created at
program initialization time. All other API entries use the meaning "current
Isolate", which is different in a multi-threaded setting and confusing.

Temporarily disabled deprecations until Chrome is ready.

BUG=v8:2487

Review URL: https://codereview.chromium.org/11970009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13419 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-18 07:20:17 +00:00
svenpanne@chromium.org
b5e4485a34 Add some runtime checks to MayNamedAccess 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11877027
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-16 08:54:04 +00:00
yangguo@chromium.org
eadcc1c10c Reland r13188, r13194, r13256 (Deferred formatting of error stack trace during GC). 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11880018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13371 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-14 13:19:27 +00:00
svenpanne@chromium.org
1ea15e5ad2 Make v8 handle OOM during Heap construction more gracefully. 
Review URL: https://codereview.chromium.org/11824064

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13356 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-10 15:53:11 +00:00
yangguo@chromium.org
e41c17084f Continues Latin-1 support. All tests pass with ENABLE_LATIN_1 flag. 
R=yangguo@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11818025
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13344 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-09 15:47:53 +00:00
jkummerow@chromium.org
aee9febccc Some more instrumentation to narrow down Failure leaks. 
The basic idea is to tag OOM-Failure objects with an ID indicating where they were created. This requires changes to equality comparisons.

Note to MIPS folks: I'm planning to revert this CL in a couple of days, so feel free to skip porting the platform-specific changes.

BUG=chromium:156010

Review URL: https://codereview.chromium.org/11818023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13341 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-09 12:29:06 +00:00
yangguo@chromium.org
bccef0c712 Reland r13275 and 13276 (Remove most uses of StringInputBuffer). 
R=dcarney@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11727003
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13291 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-31 11:13:50 +00:00
yangguo@chromium.org
2f821f1ed9 Revert r13188, r13194, r13256 (Deferred formatting of error stack trace during GC). 
R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11678006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-27 13:12:27 +00:00
yangguo@chromium.org
121f3f6020 Revert r13275 and 13276 (Remove most uses of StringInputBuffer). 
This is due to test failures in test-mark-compact/BootUpMemoryUse.

R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11688003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13277 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-27 10:03:17 +00:00
yangguo@chromium.org
7f074acd8d Remove most uses of StringInputBuffer 
R=yangguo@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11638037
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13275 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-24 08:29:48 +00:00
danno@chromium.org
1f4b4625ff Re-land Crankshaft-generated KeyedLoad stubs. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11528003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-18 16:25:45 +00:00
yangguo@chromium.org
19a6575ea3 Rename LookupSymbol calls to use Utf8 or OneByte in names. 
R=yangguo@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11597007
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-17 15:56:16 +00:00
rossberg@chromium.org
9fc844b760 V8_Fatal now prints C++ stack trace in debug mode. 
Currently only supported on Linux. When compiled with GCC, also demangles C++ identifier names.

Should make debugging those flaky crashes on buildbots easier... :)

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

Review URL: https://codereview.chromium.org/11577019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-14 14:27:06 +00:00
yangguo@chromium.org
e24b98312b Revert r13218 due to windows test failures. 
R=verwaest@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11568014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-13 17:21:15 +00:00
yangguo@chromium.org
4cd41edcd9 Add methods to allow resuming execution after calling TerminateExecution(). 
Two new methods are added to allow embedders to determine that execution
should be resumed at a particular point in the stack without being forced
to unwind all JS frames.

* V8::ResumeExecution() -- When execution is terminated via a call to
  V8::TerminateExecution(), this method can be called to clear the
  termination exception so that the engine can continue to be used.

* TryCatch::HasTerminated() -- When a TryCatch has caught a termination
  exception, HasTerminated() will return true to indicate it is valid to
  call V8::ResumeExecution() if desired.

A test case is added to cctest/test-thread-termination.cc.

BUG=v8:2361

Patch from Andrew Paprocki <andrew@ishiboo.com>.

Review URL: https://chromiumcodereview.appspot.com/11142013
Patch from Andrew Paprocki <andrew@ishiboo.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13218 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-13 16:38:49 +00:00
yangguo@chromium.org
72dfb27909 Fire 'stack' getter of error objects after GC. 
BUG=v8:2340

Review URL: https://chromiumcodereview.appspot.com/11377158

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13188 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-11 10:14:01 +00:00
danno@chromium.org
64fc1f99cb Revert 13157, 13145 and 13140: Crankshaft code stubs. 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/11498006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13179 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-10 11:09:12 +00:00
danno@chromium.org
84f2454eac Fix isolate bug introduced by generated code stubs 
Review URL: https://codereview.chromium.org/11441013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13145 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-05 16:16:32 +00:00
danno@chromium.org
f19959cd22 Enable stub generation using Hydrogen/Lithium (again) 
This initial implementation generates only KeyedLoadICs using the new Hydrogen stub infrastructure.

Committed: https://code.google.com/p/v8/source/detail?r=13105

Committed: https://code.google.com/p/v8/source/detail?r=13117

Review URL: https://codereview.chromium.org/10701054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13140 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-05 11:04:10 +00:00
yangguo@chromium.org
e6d4b7709f Remove some dead code. 
R=mstarzinger@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11412322

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13136 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-04 15:30:22 +00:00
mstarzinger@chromium.org
b21cf0208f Fix external exceptions in external try-catch handlers. 
This tries to propagate exceptions which are externally thrown into
external try-catch handlers before scheduling them. This also allows
embedders to nest external try-catch handlers.

This just relands r11834.

R=svenpanne@chromium.org
BUG=v8:2166
TEST=cctest/test-api/TryCatchNested

Review URL: https://codereview.chromium.org/11299329

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13129 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-04 10:45:59 +00:00
peter.rybin@gmail.com
be4418bae0 Issue 2429, core implementation and the protocol change 
Review URL: https://codereview.chromium.org/11421100

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13123 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-03 21:47:39 +00:00
danno@chromium.org
66f6a8182c Revert 13117: "Enable stub generation using Hydrogen/Lithium (again)" 
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/11415261

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13120 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-03 17:16:51 +00:00
danno@chromium.org
78b09625d5 Enable stub generation using Hydrogen/Lithium (again) 
This initial implementation generates only KeyedLoadICs using the new Hydrogen stub infrastructure.

Committed: https://code.google.com/p/v8/source/detail?r=13105

Review URL: https://codereview.chromium.org/10701054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13117 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-03 15:51:05 +00:00
danno@chromium.org
0a3bcc8c05 Revert 13105: "Enable stub generation using Hydrogen/Lithium." 
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/11414262

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-30 17:45:45 +00:00
danno@chromium.org
c115ff4e33 Enable stub generation using Hydrogen/Lithium. 
This initial implementation generates only KeyedLoadICs using the new Hydrogen stub infrastructure.

Review URL: https://codereview.chromium.org/10701054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13105 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-30 17:31:30 +00:00
jkummerow@chromium.org
8c5bf4a7e0 Fix typo in condition when to log code objects during deserialization. 
Review URL: https://codereview.chromium.org/11416068

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13013 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-20 12:59:36 +00:00
yangguo@chromium.org
578a2c74bd Fix details in message formatting. 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11360220

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12940 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-13 09:01:43 +00:00
yangguo@chromium.org
c6b35d0310 Correctly handle uncaught exception objects. 
R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11365200

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12939 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-12 17:32:30 +00:00
yangguo@chromium.org
4c27298d27 Collect stack trace on stack overflow. 
BUG=v8:2394

Review URL: https://chromiumcodereview.appspot.com/11275186

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12933 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-12 14:54:29 +00:00
jkummerow@chromium.org
e8320f4f78 Function::GetScriptOrigin should supply sourceURL when script name is not available. 
GetScriptOrigin is used for DevTools instrumentation.

If inspected call-site is inside "eval" then returned script name is "undefined". To fix this problem we can use the "nameOrSourceURL" method of script-wrapper.

This is a re-upload of https://codereview.appspot.com/6811090/ for the purpose of landing.

BUG=159413

Review URL: https://codereview.chromium.org/11312185
Patch from Eugene Klyuchnikov <eustas@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12929 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-12 12:34:18 +00:00
yangguo@chromium.org
4cca6c6081 Make formatting error message side-effect-free. 
BUG=v8:2398

Review URL: https://chromiumcodereview.appspot.com/11359130

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12926 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-12 10:33:20 +00:00
verwaest@chromium.org
61d25b01bc Push stacktrace and die if the receiver is of unknown type. 
Review URL: https://chromiumcodereview.appspot.com/10917086

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12443 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-09-05 12:30:49 +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
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
rossberg@chromium.org
55e6227817 Rename JSGlobalProxy::context to native_context, 
for clarity and consistency with GlobalObject::native_context.

R=svenpanne@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10861007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12341 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-20 11:35:50 +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
mstarzinger@chromium.org
3bb994c4e4 Make test-serialize resilient against --gc-interval. 
R=erik.corry@gmail.com
TEST=cctest/test-serialize (--gc-interval=100)

Review URL: https://chromiumcodereview.appspot.com/10829097

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-01 09:43:05 +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
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
yangguo@chromium.org
45d86e4846 MIPS: Fixed mistake in condition for Nan fixups from snapshot. 
The commit r11871 caused quiet NaN related errors to
appear on Loongson and Sigma platforms when snapshot
is used. This commit fixes those issues.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10735080
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12073 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-13 07:22:11 +00:00
mstarzinger@chromium.org
9ecff25a79 Output the correct line number in the error message for compilation failures during bootstrapping 
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10735024
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12026 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-10 11:04:38 +00:00
mstarzinger@chromium.org
d3d59e71e9 Revert r11834 because of broken Chromium unit test. 
R=yangguo@chromium.org
BUG=v8:2166

Review URL: https://chromiumcodereview.appspot.com/10630003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11892 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-21 11:10:53 +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