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1689 Commits

Author SHA1 Message Date
yangguo@chromium.org
1b25fb8fa9 Preserve error message during finally block in try..finally. 
R=ulan@chromium.org
BUG=129171
TEST=test-api/TryFinallyMessage

Review URL: https://chromiumcodereview.appspot.com/10537078

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-11 10:51:09 +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
svenpanne@chromium.org
552cf12522 Make clang/GCMole happy. 
TBR=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10532065

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11738 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-08 12:53:20 +00:00
svenpanne@chromium.org
40dbd13e2e Added LoadIC stub for getters. 
Removed some dead constants on the way.

Review URL: https://chromiumcodereview.appspot.com/10515008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11735 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-08 08:48:05 +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
c3e6fab818 Remove CheckNotRegistersEqual regexp-masm function from all architectures. This is a commit of http://codereview.chromium.org/10066009/ for Daniel Kalmar 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11721 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-06 07:50:22 +00:00
sanjoy@chromium.org
98db16d94f Progress towards making Zones independent of Isolates and Threads. 
This CL changes some parts of the code to explicitly pass around a
Zone.  Not passing in a zone is okay too (in fact most of v8 still
doesn't), but that may incur a TLS lookup.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10443114

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-04 14:42:58 +00:00
yangguo@chromium.org
85e3fba8a3 Remove unnecessary code for non-zero-length global regexps. 
Also fixing a bug in the arm implementation.

BUG=
TEST=regexp-global.js

Review URL: https://chromiumcodereview.appspot.com/10383280

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-04 08:49:17 +00:00
rossberg@chromium.org
d87249945f Fix merge issue. 
R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10454115

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11695 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-01 11:09:09 +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
mstarzinger@chromium.org
ebe9a0e0b2 Fix missing write barrier in store field stub. 
R=vegorov@chromium.org
BUG=v8:2143,v8:1465,chromium:129355
TEST=cctest/test-heap/Regress2143

Review URL: https://chromiumcodereview.appspot.com/10443052

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11678 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-29 16:39:26 +00:00
danno@chromium.org
17ec52b6cd Fix build and test failures from packed array optimizations. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10332317

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11638 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-23 21:15:14 +00:00
danno@chromium.org
9910edbb9a Implement tracking and optimizations of packed arrays 
R=jkummerow@chromium.org
TEST=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10170030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11636 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-23 14:24:29 +00:00
yangguo@chromium.org
30e7c23afd Fix argument passing to generated regexp code in Win64. 
R=erik.corry@gmail.com
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10417049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11631 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-23 11:36:54 +00:00
svenpanne@chromium.org
cae003513b Fix two call to masm->CallStub on x64: should pass ASTId. 
Review URL: https://chromiumcodereview.appspot.com/10383278

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11628 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-23 07:41:58 +00:00
yangguo@chromium.org
7ab5dcf4df Fix stack push order when reserving space for regexp registers on Windows. 
TBR=erik.corry@gmail.com
BUG=
TEST=test-regexp/MacroAssemblerNativeLotsOfRegisters

Review URL: https://chromiumcodereview.appspot.com/10407095

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-22 15:30:08 +00:00
yangguo@chromium.org
578fc3cc2d Implement loop for global regexps in regexp assembler. 
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10386090

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11623 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-22 14:05:44 +00:00
yangguo@chromium.org
ee17b195a4 Fix GCC 4.7 (C++11) compilation. 
Original patch by Olivier Goffart <ogoffart@kde.org>.

BUG=v8:2136
TEST=

Review URL: https://chromiumcodereview.appspot.com/10387210

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11600 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-21 09:59:28 +00:00
mmassi@chromium.org
2fd1e1bbc2 Array index computation dehoisting. 
When an array index (in an array access) is a simple "expression + constant", just embed the constant in the array access operation so that the full index expression is (potentially) no longer used and its live range can be much shorter.
This is effective in conjunction with array bounds check removal (otherwise the index is anyway used in the check).

Review URL: https://chromiumcodereview.appspot.com/10382055

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-21 07:59:50 +00:00
erik.corry@gmail.com
3d45e98b5e Remove %_SwapElements. This inlined runtime contained an optimization that was dangerous in the presence of incremental compaction. It also prevented QuickSort from array.js from being optimized by Crankshaft, so it is probably better to do without it. We have high hopes that this will fix bug=117879. 
Review URL: https://chromiumcodereview.appspot.com/10392150

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11588 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-17 20:53:32 +00:00
peter.rybin@gmail.com
401fbbaef6 Fix issue 825 (LiveEdit vs. function with no locals) for x64. 
Review URL: https://chromiumcodereview.appspot.com/10387116

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11587 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-16 21:15:24 +00:00
erik.corry@gmail.com
423451aed7 Simplify DoLoadNamedFieldPolymorphic 
Review URL: https://chromiumcodereview.appspot.com/10386089

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11543 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-11 09:13:02 +00:00
erik.corry@gmail.com
f8bdbf1ce1 Fix compose-discard crasher from 11524 - port to x64, ARM, MIPS. 
This is now bug 2123.
TBR=mstarzinger
Review URL: https://chromiumcodereview.appspot.com/10391061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11540 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-10 21:25:49 +00:00
peter.rybin@gmail.com
1719a1499a Fix issue 825 (LiveEdit vs. function with no locals) in core and for ia32. 
Review URL: https://chromiumcodereview.appspot.com/10263002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11502 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-03 17:31:34 +00:00
mstarzinger@chromium.org
d965561862 Fix register clobbering in LoadIC for interceptors. 
This fixes a corner-case where the receiver register was clobbered by
LoadICs for interceptors and inlined followup code still relied on the
receiver to be intact in case of prototype changes.

R=vegorov@chromium.org
BUG=chromium:125988
TEST=cctest/test-api/Regress125988

Review URL: https://chromiumcodereview.appspot.com/10358010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11492 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-03 11:28:24 +00:00
mstarzinger@chromium.org
c810016e77 Implement clearing of CompareICs. 
This allows CompareICs to be cleared during garbage collection to avoid
cross-context garbage retention through maps stored in CompareIC stubs
for the KNOWN_OBJECTS state.

R=vegorov@chromium.org
BUG=v8:2102

Review URL: https://chromiumcodereview.appspot.com/10263008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11491 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-03 10:54:17 +00:00
danno@chromium.org
908e77a53a Ensure reload of elements pointer in StoreFastDoubleElement stub. 
R=mstarzinger@chromium.org
TEST=test/mjsunit/regress/regress-125515.js
BUG=chromium:125515

Review URL: https://chromiumcodereview.appspot.com/10260014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11479 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-02 09:58:42 +00:00
jkummerow@chromium.org
0133965d1b Fix mistakes in r11472 
TBR=vegorov@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10274008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11473 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-30 17:06:13 +00:00
jkummerow@chromium.org
f6dacfe83a Fixed corner cases in truncation behavior when storing to TypedArrays. 
Also simplified ia32 KeyedStoreStubCompiler::GenerateStoreExternalArray a bit.

BUG=v8:2110
TEST=mjsunit/regress/regress-2110

Review URL: https://chromiumcodereview.appspot.com/10260011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11472 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-30 15:17:59 +00:00
mstarzinger@chromium.org
b54ca31fb2 Fix LFastLiteral to check boilerplate elements kind. 
Adds a missing check that the elements kind of the boilerplate object
still has the expected elements kind, unoptimized code can transition
the boilerplate. Corner cases might cause the optimized code to be
reentered again.

R=danno@chromium.org
TEST=mjsunit/regress/regress-fast-literal-transition

Review URL: https://chromiumcodereview.appspot.com/10254006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11470 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-30 14:59:13 +00:00
fschneider@chromium.org
f46906d7a8 Reduce size of LIR instruction by one word and remove dead code. 
Until now we always recorded two deoptimization environments for instructions
that are marked as calls. We actually don't need two for all LIR
instructions except one (LInstanceOfKnownGlobal) where there is a lazy
deoptimization point in deferred code.

This change remove on of them and uses one virtual function instead
to make LInstanceOfKnownGlobal work as before.

Additionally, this change removes an unused predicate save_doubles_ from LIR
instructions and removes some helper functions that are used only in one place.
Review URL: https://chromiumcodereview.appspot.com/10035021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11454 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-26 12:43:00 +00:00
mstarzinger@chromium.org
21fc0fef6a Fix deopted construct stub frame to contain code object. 
R=danno@chromium.org
BUG=chromium:124594
TEST=mjsunit/regress/regress-124594

Review URL: https://chromiumcodereview.appspot.com/10155024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11436 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-25 13:22:04 +00:00
fschneider@chromium.org
6e713a269d Optimise Math.floor(x/y) to use integer division for specific divisor. 
Landing for Rodolph Perfetta <rodolph.perfetta@gmail.com>. 

Original CL: http://codereview.chromium.org/9638018/
Review URL: https://chromiumcodereview.appspot.com/10197010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11427 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-24 15:59:07 +00:00
fschneider@chromium.org
09657d94eb Revert r11420 because Win32 compilation was broken. 
TBR=danno@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10190007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11421 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-23 18:12:36 +00:00
fschneider@chromium.org
2957c20926 optimise Math.floor(x/y) to use integer divisiion for specific divisor. 
BUG=none
TEST=mjsunit/math-floor-of-div.js

Landing for Rodolph Perfetta <rodolph.perfetta@gmail.com>.
Review URL: https://chromiumcodereview.appspot.com/9638018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11420 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-23 17:44:21 +00:00
fschneider@chromium.org
cadf058618 Finish refactoring done for ia32 for the other platforms. 
Make non-templatized versions of LIR printing functions.

This avoid duplicating the code for each template instance.

BUG=v8:1803
Review URL: https://chromiumcodereview.appspot.com/10123011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11394 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-19 16:49:09 +00:00
mstarzinger@chromium.org
60863e5cd6 Port function call type-feedback cells to x64 and ARM. 
R=fschneider@chromium.org
BUG=v8:1857,v8:2079

Review URL: https://chromiumcodereview.appspot.com/10124008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11391 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-19 14:17:12 +00:00
fschneider@chromium.org
0556f87851 Optimize ~~(expr) in optimized code. 
~~ is commonly used to truncate a value to int32 (ToInt32).

This change avoid actually emitting the bitwise operations, and
just truncates the subexpression of ~~.

BUG=v8:2037
TEST=test/mjsunit/compiler/optimize-bitnot.js
Review URL: https://chromiumcodereview.appspot.com/10123007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11390 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-19 13:24:15 +00:00
vegorov@chromium.org
fd9bd722bc Simplify invocation sequence at monomorphic function invocation sites. 
Provide known target as a hint to HInvokeFunction instruction so that it can statically determine if arguments adaptation is required.

R=fschneider@chromium.org
BUG=v8:2079

Review URL: https://chromiumcodereview.appspot.com/10116021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11364 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-18 09:38:45 +00:00
mstarzinger@chromium.org
47d07b8a7b Fix fast array literals to ignore prototype chain. 
This makes sure that boilerplate objects for array literals with
non-constant elements (which will contain the hole at non-constant
positions) will not cause prototype chain lookups when generating
optimized code.

R=erik.corry@gmail.com
BUG=chromium:123512
TEST=mjsunit/regress/regress-123512

Review URL: https://chromiumcodereview.appspot.com/10105025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11350 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-17 11:12:37 +00:00
yangguo@chromium.org
47c4a5b4ef Make SubStringStub more robust wrt unsafe arguments. 
BUG=
TEST=test-strings/RobustSubStringStub

Review URL: https://chromiumcodereview.appspot.com/9969196

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11349 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-17 10:49:15 +00:00
rossberg@chromium.org
ab26fb6b21 Implement rudimentary module linking. 
Constructs the (generally cyclic) graph of module instance objects
and populates their exports. Any exports other than nested modules
are currently set to 'undefined' (but already present as properties).

Details:
- Added new type JSModule for instance objects: a JSObject carrying a context.
- Statically allocate instance objects for all module literals (in parser 8-}).
- Extend interfaces to record and unify concrete instance objects,
  and to support iteration over members.
- Introduce new runtime function for pushing module contexts.
- Generate code for allocating, initializing, and setting module contexts,
  and for populating instance objects from module literals.
  Currently, all non-module exports are still initialized with 'undefined'.
- Module aliases are resolved statically, so no special code is required.
- Make sure that code containing module constructs is never optimized
  (macrofy AST node construction flag setting while we're at it).
- Add test case checking linkage.

Baseline: http://codereview.chromium.org/9722043/

R=svenpanne@chromium.org,mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9844002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11336 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-16 14:43:27 +00:00
rossberg@chromium.org
ed68932861 Refactor code generation for global declarations. 
(Baseline is http://codereview.chromium.org/9704054/)

R=fschneider@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9722043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11332 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-16 12:26:16 +00:00
rossberg@chromium.org
43a52c4cee Refactoring of code generation for declarations, in preparation for modules. 
Do proper dispatch on declaration type instead of mingling together
different code generation paths. Once we add more declaration forms,
this is more scalable.

In separate steps, I'd like to (1) clean up the logic for DeclareGlobal,
and (2) try to reduce the special handling of the name function var if
possible.

R=fschneider@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9704054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11331 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-16 11:48:20 +00:00
mstarzinger@chromium.org
875a57e658 Add PushAddress(ExternalReference) for X64. 
R=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/10081009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11329 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-16 10:53:26 +00:00
ulan@chromium.org
267879e92c Fix fast API call for MinGW-w64 
MinGW-w64 uses the rcx register for the first argument. Unlike MSVC, it does not require preparing a slot for the result handle on the stack and putting a pointer to it in the rcx register.

BUGS=v8:2026
TEST=cctest/test-api

Review URL: https://chromiumcodereview.appspot.com/9959050
Patch from Jonathan Liu <net147@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11325 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-16 09:22:12 +00:00
mstarzinger@chromium.org
0803c4dfbf Fix r11306 to use external references on X64. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10079004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11313 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-13 11:25:13 +00:00
mstarzinger@chromium.org
2f732c2728 Add isolate accessor to AccessorInfo and Arguments. 
This passes the isolate through to API callback functions so that it is
available through AccessorInfo and Arguments. This allows bindings to
avoid unnecessary TLS lookups to retrieve the current isolate.

R=danno@chromium.org
TEST=cctest/test-api,cctest/test-accessors

Review URL: https://chromiumcodereview.appspot.com/10069050

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11306 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-13 09:38:00 +00:00
jkummerow@chromium.org
14e181709b Fix regular and ElementsKind transitions interfering with each other 
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
 2012-04-12 12:30:32 +00:00
fschneider@chromium.org
71702e1da3 Improve performance of keyed loads/stores which have a HeapNumber index. 
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
 2012-04-12 08:35:30 +00:00