Commit Graph

532 Commits

Author SHA1 Message Date
bmeurer@chromium.org
d4b533d41b Bulk update of Google copyright headers in source files.
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/259183002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21035 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-29 06:42:26 +00:00
danno@chromium.org
9aaa5367ba Revert r20974: Unify and simplify the FastCloneShallowArrayStub
Due to Layout test redness.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/256873007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21007 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-28 10:28:15 +00:00
danno@chromium.org
198c4769f2 Unify and simplify the FastCloneShallowArrayStub
- Don't bake in length/capacity into full codegen calls of stubs,
  allowing boilerplates to increase their capacity without regenerating
  code.
- Unify all variants of the clone stub into a single,
  length-independent version.
- Various tweaks to make sure that the clone stub doesn't spill and
  therefore need an eager stack frame.
- Handle all lengths of array literals in the fast case.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/257563004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20974 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-25 11:54:01 +00:00
rossberg@chromium.org
926ec656de Implement structural function and array types
Just wanted to add two constructors to a datatype, how ugly can it get?

R=bmeurer@chromium.org, jarin@chromium.org
BUG=

Committed: https://code.google.com/p/v8/source/detail?r=20809

Committed: https://code.google.com/p/v8/source/detail?r=20815

Review URL: https://codereview.chromium.org/228263005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20817 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-16 16:16:37 +00:00
rossberg@chromium.org
e3e81d85bb Revert "Implement structural function and array types"
TBR=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/237963016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20816 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-16 15:59:39 +00:00
rossberg@chromium.org
6782d9cea3 Implement structural function and array types
Just wanted to add two constructors to a datatype, how ugly can it get?

R=bmeurer@chromium.org, jarin@chromium.org
BUG=

Committed: https://code.google.com/p/v8/source/detail?r=20809

Review URL: https://codereview.chromium.org/228263005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20815 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-16 15:42:22 +00:00
rossberg@chromium.org
a947aeb315 Revert "Implement structural function and array types"
TBR=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/240143003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20810 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-16 13:57:25 +00:00
rossberg@chromium.org
7de4c1c63f Implement structural function and array types
Just wanted to add two constructors to a datatype, how ugly can it get?

R=bmeurer@chromium.org, jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/228263005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20809 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-16 13:44:26 +00:00
bmeurer@chromium.org
42c67d5fa2 Allow merging of monomorphic accesses to tracked fields.
Also add stability dependency only on maps that can transition,
and delay adding the dependencies until we are actually using
them, either in a HLoadNamedField or an HCheckMaps.

TEST=mjsunit/field-type-tracking
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/239923004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20796 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-16 11:41:09 +00:00
bmeurer@chromium.org
b5cec2b72f Handlify AddDependentCode(), AddDependentCompilationInfo() and AddDependentIC().
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/236193014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-15 10:14:50 +00:00
bmeurer@chromium.org
6b4d4b7287 Reland "Track field types.".
This is an initial step towards tracking the exact types instead of just
the representations of fields. It adds support to track up to one map of
heap object field values, eliminating various map checks on values
loaded from such fields, at the cost of making stores to such fields
slightly more expensive.

Issues with transitioning stores and fast object literals in Crankshaft
fixed.

TEST=mjsunit/field-type-tracking
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/238773002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20746 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-15 07:36:47 +00:00
jarin@chromium.org
c1a3ab6b4f Revert "Track field types."
Revert r20701.

TBR=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/236843002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-14 08:24:15 +00:00
bmeurer@chromium.org
9cf3909975 Track field types.
This is an initial step towards tracking the exact types instead of just the representations of fields. It adds support to track up to one map of heap object field values, eliminating various map checks on values loaded from such fields, at the cost of making stores to such fields slightly more expensive.

TEST=mjsunit/field-type-tracking
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/167303005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20701 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-14 06:29:15 +00:00
yangguo@chromium.org
a640707213 Implement handlified String::Equals and Name::Equals.
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/225823003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20669 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-04-11 07:27:25 +00:00
dslomov@chromium.org
76b8f25edb This implements allocating small typed arrays in heap.
R=mvstanton@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/150813004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-26 12:50:13 +00:00
dslomov@chromium.org
f66af4feb4 Refactor optimized in hydrogen only runtime functions.
This splits all runtime function into 3 categories:
1) RUNTIME: implemented in runtime and called from both full and optimized code.
2) RUNTIME_HIDDEN: implemented in runtime, never called directly from JS builtins.
3) INLINE: inlined in both full and optimized code
4) INLINE_OPTIMIZED: inlined in optimized code, implemented in runtime for full code.

R=yangguo@chromium.org, yannguo@chromium.org

Review URL: https://codereview.chromium.org/209353006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-25 14:26:55 +00:00
dslomov@chromium.org
cdc9812756 Revert "This implements allocating small typed arrays in heap."
This reverts commit r20244 for breaking Win64 build and webkit tests.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/208503007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-25 14:12:58 +00:00
dslomov@chromium.org
654b6a27d1 This implements allocating small typed arrays in heap.
R=mvstanton@chromium.org, verwaest@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=20240

Review URL: https://codereview.chromium.org/150813004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20244 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-25 13:21:58 +00:00
dslomov@chromium.org
727bc2153e Revert "This implements allocating small typed arrays in heap."
This reverts commit r20240 for breaking Windows build.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/211003003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-25 12:58:22 +00:00
dslomov@chromium.org
322a474bf2 This implements allocating small typed arrays in heap.
R=mvstanton@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/150813004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-25 12:51:49 +00:00
yangguo@chromium.org
15951521cc Refactor inlined typed array runtime functions.
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/203443002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20177 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-24 08:22:24 +00:00
mvstanton@chromium.org
535f3427ca Pretenure call new support.
When FLAG_pretenure_call_new is on, we emit mementos on new object creation
in full code, and consume the feedback in crankshaft. A key difference in the
generated code for stubs is the allocation of an additional type vector slot for the
CallNew AST node, which simplifies the CallConstructStub and CallFunctionStub
considerably.

Some performance tuning still needs to be addressed, therefore the flag is off at
this moment, though fully functional. The goal is to remove the flag as soon as
possible, which allows much code deletion (yay).

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/132963012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20076 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-19 13:39:09 +00:00
rossberg@chromium.org
8e3f3cee9e Eliminate extended mode, and other modes clean-up
- Merge LanguageMode and StrictModeFlag enums
- Make harmony-scoping depend only on strict mode
- Free some bits on the way
- Plus additional clean-up and renaming

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/181543002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19800 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-11 14:41:22 +00:00
rossberg@chromium.org
3f702d4bf9 Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode
R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/177683002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19799 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-11 14:39:08 +00:00
yangguo@chromium.org
8472e0f02b Remove duplicates in runtime macros.
Each item in INLINE_RUNTIME_FUNCTION_LIST had to have a duplicate
entry in RUNTIME_FUNCTION_LIST in order to match the comment.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/177313005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-07 08:49:02 +00:00
jarin@chromium.org
7ac668f753 Deoptimization fix for HPushArgument.
HPushArgument should never be used in a simulation environment
because the slot addresses for the arguments can be off (e.g.,
due to on-stack arguments object of an inlined caller).

R=mstarzinger@chromium.org
BUG=v8:3183
LOG=N

Review URL: https://codereview.chromium.org/178193026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19675 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-05 12:45:46 +00:00
verwaest@chromium.org
60c08a8bf2 Directly store the transition target on LookupResult in TransitionResult.
BUG=chromium:343964
LOG=N
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/170343003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19440 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-18 12:19:32 +00:00
bmeurer@chromium.org
eaab533fd8 Cleanup the double field tracking in Hydrogen.
Use a dedicated BuildLoadNamedField() with PropertyAccessInfo,
similar to BuildStoreNamedField() for optimized graph building,
and a dedicated BuildLoadNamedField() for the code stubs, and
don't depend on FLAG_track_double_fields during code generation.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/168583006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19411 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-17 13:23:04 +00:00
jarin@chromium.org
4c7ed144e1 Comparison in effect context lazy deopt fix.
R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/163623002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19396 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-16 05:51:10 +00:00
vegorov@chromium.org
8f170a66e7 Improve positions tracking inside the HGraphBuilder.
Instead of tracking simple absolute offset from the start of the script like other places do, track a pair of (inlining id, offset from the start of inlined function).

This enables us to pinpoint with inlining path an instruction came from. Previously in multi-script environments we emitted positions that made very little sense because inside a single optimized function they would point to different scripts without a way to distinguish them.

Start dumping the source of every inlined function to make possible IR viewing tools with integrated source views as there was previously no way to acquire this information from IR dumps. We also dump source position at which each inlining occured.

Tracked positions are written into hydrogen.cfg as pos:<inlining-id>_<offset>.

Flag --emit-opt-code-positions is renamed by this change into --hydrogen-track-positions to better convey it's meaning.

In addition this change assigned global unique identifier to each optimization performed inside isolate. This allows to precisely match compilation artifacts (e.g. IR and disassembly) and deoptimizations.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/140683011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19360 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-13 16:09:28 +00:00
verwaest@chromium.org
386bc4c2fa Return on the polymorphic hard deopt case to ensure we don't polute phis with fake type information.
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/163403003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19359 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-13 15:54:19 +00:00
ishell@chromium.org
b446674c85 More check elimination improvements including partial learning on false branches of CompareMap and better handling of unreachable blocks.
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/159963002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-11 19:18:06 +00:00
verwaest@chromium.org
c1a08679dc Merge BuildLoadKeyedGeneric and BuildStoreKeyedGeneric, switch on AccessType
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/146623007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-10 14:58:25 +00:00
verwaest@chromium.org
d2d3fc0e4d Use PropertyAccessType for keyed accesses rather than "bool is_store"
BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/137883008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-10 11:43:34 +00:00
verwaest@chromium.org
f19aeae06b Unify BuildLoad/StoreNamedGeneric
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/155513008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-10 10:23:59 +00:00
verwaest@chromium.org
43c0a419ed Remove special ArrayLength handling already covered by JSObjectFieldAccessors
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/153743005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19152 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-06 13:01:38 +00:00
jarin@chromium.org
eb502fe599 Binary operation deoptimization fix.
R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/132453009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19132 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-06 09:36:55 +00:00
dcarney@chromium.org
6df537d631 inline api setters in crankshaft
R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/155913002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19129 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-06 07:31:08 +00:00
dcarney@chromium.org
5028ebaa8b inline api getters in crankshaft
R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/146023004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19110 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-05 15:52:31 +00:00
verwaest@chromium.org
5949fe1679 Merge named part of BuildLoad and BuildStore
BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/149803007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19109 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-05 15:44:20 +00:00
verwaest@chromium.org
d985948c7a Merge BuildLoad/StoreMonomorphic
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/137263021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19108 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-05 15:43:33 +00:00
verwaest@chromium.org
cb044fa2d8 Merge polymorphic load/store handling
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/150573010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-05 15:28:57 +00:00
verwaest@chromium.org
2c3e6b41ff Use PropertyAccessInfo to compute stores in crankshaft.
BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/153933002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-04 22:23:26 +00:00
verwaest@chromium.org
8ac80c5308 Use Type* in crankshaft rather than HeapType.
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/152863002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19069 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-04 12:44:15 +00:00
ishell@chromium.org
05270212c3 Remake of the load elimination fix made earlier (r18884).
R=titzer@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/149063010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-04 10:48:49 +00:00
verwaest@chromium.org
db7124dc28 Return a valid map for PropertyAccessInfos with Boolean type.
BUG=340064
LOG=N
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/152603002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19023 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-03 10:20:32 +00:00
verwaest@chromium.org
ae7a209e71 Remove CallICs
BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/148223002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19001 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-31 16:52:17 +00:00
ishell@chromium.org
2aa17c6e62 Load elimination fix: load should not be replaced with another load if the former is not dominated by the latter.
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/151333003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18985 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-31 12:03:32 +00:00
dcarney@chromium.org
5c589640bf crankshaft support for api method calls
R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/148333003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18946 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-30 13:18:41 +00:00
verwaest@chromium.org
73529a7d14 Support loads from primitive values.
This also changes load computation to use HeapTypes rather than Maps.
TODO: move conversion between maps and heaptypes earlier in the process, already in the oracle.

BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/147763006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18938 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-30 11:30:38 +00:00
bmeurer@chromium.org
3ba2f104c9 Turn RegExpConstructResultStub into a HydrogenCodeStub.
This has the additional benefit that it is now possible to
inline the RegExpResult construction code into Hydrogen
builtins.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/141703018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18902 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-29 13:10:35 +00:00
ishell@chromium.org
d330d4801d Load elimination fix with a test case.
R=titzer@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/143413019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18884 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-28 16:45:04 +00:00
rossberg@chromium.org
0d906a8bdb Zonify types in compiler frontend
Clean up some zone/isolate handling in AST and its visitors on the way.

(Based on https://codereview.chromium.org/103743004/)

R=jkummerow@chromium.org, titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/102563004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-21 16:22:52 +00:00
jarin@chromium.org
19d832719e This is a preview of a first step towards unification of the hydrogen
call machinery.  The change replaces CallNamed, CallKeyed,
CallConstantFunction and CallKnownGlobal hydrogen instructions with two
new instructions with a more lower level semantics:

1. CallJSFunction for direct calls of JSFunction objects (no
   argument adaptation)

2. CallWithDescriptor for calls of a given Code object according to
   the supplied calling convention.

Details:

CallJSFunction should be straightforward, the main difference from the
existing InvokeFunction instruction is the absence of argument adaptor
handling. (As a next step, we will replace InvokeFunction with an
equivalent hydrogen code.)

For CallWithDescriptor, the calling conventions are represented by a
tweaked version of CallStubInterfaceDescriptor. In addition to the
parameter-register mapping, we also define parameter-representation
mapping there. The CallWithDescriptor instruction has variable number of
parameters now - this required some simple tweaks in Lithium, which
assumed fixed number of arguments in some places.

The calling conventions used in the calls are initialized in the
CallDescriptors class (code-stubs.h, <arch>/code-stubs-<arch>.cc), and
they live in a new table in the Isolate class. I should say I am not
quite sure about Representation::Integer32() representation for some of
the params of ArgumentAdaptorCall - it is not clear to me wether the
params could not end up on the stack and thus confuse the GC.

The change also includes an earlier small change to argument adaptor
(https://codereview.chromium.org/98463007) that avoids passing a naked
pointer to the code entry as a parameter. I am sorry for packaging that
with an already biggish change.

Performance implications:

Locally, I see a small regression (.2% or so). It is hard to say where
exactly it comes from, but I do see inefficient call sequences to the
adaptor trampoline. For example:

;;; <@78,#24> constant-t
bf85aa515a     mov edi,0x5a51aa85          ;; debug: position 29
;;; <@72,#53> load-named-field
8b7717         mov esi,[edi+0x17]          ;; debug: position 195
;;; <@80,#51> constant-s
b902000000     mov ecx,0x2                 ;; debug: position 195
;;; <@81,#51> gap
894df0         mov [ebp+0xf0],ecx
;;; <@82,#103> constant-i
bb01000000     mov ebx,0x1
;;; <@84,#102> constant-i
b902000000     mov ecx,0x2
;;; <@85,#102> gap
89d8           mov eax,ebx
89cb           mov ebx,ecx
8b4df0         mov ecx,[ebp+0xf0]
;;; <@86,#58> call-with-descriptor
e8ef57fcff     call ArgumentsAdaptorTrampoline  (0x2d80e6e0)    ;; code: BUILTIN

Note the silly handling of ecx; the hydrogen for this code is:

0 4 s27 Constant 1  range:1_1 <|@
0 3 t30 Constant 0x5bc1aa85 <JS Function xyz (SharedFunctionInfo 0x5bc1a919)> type:object <|@
0 1 t36 LoadNamedField t30.[in-object]@24 <|@
0 1 t38 Constant 0x2300e6a1 <Code> <|@
0 1 i102 Constant 2  range:2_2 <|@
0 1 i103 Constant 1  range:1_1 <|@
0 2 t41 CallWithDescriptor t38 t30 t36 s27 i103 i102 #2 changes[*] <|@

BUG=
R=verwaest@chromium.org, danno@chromium.org

Review URL: https://codereview.chromium.org/104663004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18626 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-15 17:00:35 +00:00
jkummerow@chromium.org
5298a078c6 Revert "Eliminatable CheckMaps replaced with if(true) or if(false)."
This reverts r18592 for breaking the GC stress bots.

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/137783011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18611 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-15 09:53:54 +00:00
ishell@chromium.org
952fbe475f Eliminatable CheckMaps replaced with if(true) or if(false).
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/130613003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-14 16:06:40 +00:00
verwaest@chromium.org
1257ba358c Remove CALL_AS_FUNCTION and CALL_AS_METHOD.
BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/136403005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18590 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-14 14:36:24 +00:00
verwaest@chromium.org
f2245a9cf9 Make the strict-mode calling convention for contextual calls the default one.
BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/131663003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18581 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-14 12:04:10 +00:00
mvstanton@chromium.org
380aa6dc8d Array constructor can be simplified by loading context from JSFunction.
BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/128683002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18518 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-09 15:07:23 +00:00
verwaest@chromium.org
4615e9edac Reland v8:18458 "Load the global proxy from the context of the target function."
BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/104013008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18462 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-07 10:46:39 +00:00
rossberg@chromium.org
2879f2104c Revert "Load the global proxy from the context of the target function."
This reverts commit https://code.google.com/p/v8/source/detail?r=18458, since it exhibits a bug that breaks some tests.

TBR=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/93863006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18461 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-07 09:55:25 +00:00
verwaest@chromium.org
5b40c38679 Load the global proxy from the context of the target function.
BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/111613003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-07 08:21:17 +00:00
bmeurer@chromium.org
ad4231c495 Reland "Allocation site support for monomorphic StringAdds in BinaryOps".
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/106313003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18444 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-02 15:31:27 +00:00
bmeurer@chromium.org
4d88b0b4be Revert "Fix compilation with C++11." and "Allocation site support for monomorphic StringAdds in BinaryOps.".
This reverts commit r18431 and r18432 for breaking
the Linux nosnapshot build.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/122463004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18434 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-02 10:38:45 +00:00
bmeurer@chromium.org
a91499fec7 Allocation site support for monomorphic StringAdds in BinaryOps.
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/106453003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-02 09:17:52 +00:00
ishell@chromium.org
e3752b63c0 HStoreKeyed for Smis optimized for x64 + related redundant moves of elements removed
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/108503004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18362 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-18 18:05:10 +00:00
jkummerow@chromium.org
59c334ebf4 Hydrogen: Re-use regular comparisons infrastructure for switch statements
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/111573003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-18 11:58:58 +00:00
bmeurer@chromium.org
69b5d5f8f6 Revert "Use constant types to represent the fixed right arg of a MOD."
This reverts commit r18246 for tanking all benchmarks.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/104243002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-04 09:27:48 +00:00
bmeurer@chromium.org
1868ef5de9 Use constant types to represent the fixed right arg of a MOD.
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/103933002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-04 08:37:34 +00:00
bmeurer@chromium.org
7e540e6b8a Revert "Use constant types to represent the fixed right arg of a MOD."
This reverts commit r18228 for crashing on Windows.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/101663002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-03 11:24:56 +00:00
bmeurer@chromium.org
5c6b9500aa Use constant types to represent the fixed right arg of a MOD.
R=mvstanton@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/99173002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-03 10:51:57 +00:00
bmeurer@chromium.org
a3d1df29f1 Fix HInnerAllocatedObject to use an HValue for the offset.
R=hpayer@chromium.org, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/98673003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18181 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-12-02 11:24:31 +00:00
mvstanton@chromium.org
f3a22f965e The goal is to discover the appropriate heap space for objects created in full
code. By the time we optimize the code, we'll be able to decide on new or old
space based on the number of surviving objects after one or more gcs.

The mechanism is a "memento" placed behind objects in the heap. It's currently
done for array and object literals, with plans to use mementos for constructed
objects as well (in a later CL).

The feature is behind the flag allocation_site_pretenuring, currently off.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/40063002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-27 14:03:40 +00:00
dslomov@chromium.org
c3a4d718ce Generate TypedArrayInitialize builtin in hydrogen.
R=danno@chromium.org

Review URL: https://codereview.chromium.org/59023003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18059 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-25 14:41:46 +00:00
mvstanton@chromium.org
81b22bbf96 A performance regression in array literal creation was caused by refactoring that eliminated a special fast case for shallow arrays. At the same time the general case got a bit slower. This CL restores most of the performance without coding the special fast case. The virtual dispatching is unnecessary because we know what we want to do at compile time. A flag was added to Runtime::CreateArrayLiteral. The flags delivers information about shallowness but also whether or not allocation mementos should be created. This is useful for crankshafted code.
BUG=v8:3008
LOG=Y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/77293003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18046 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-25 12:41:27 +00:00
dslomov@chromium.org
21dca31203 Safe HGraphBuilder::Add<> and New<>
R=danno@chromium.org

Review URL: https://codereview.chromium.org/82943005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18033 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-22 19:05:21 +00:00
bmeurer@chromium.org
08df395f4e Get rid of the binop_stub parameter to BuildBinaryOperation().
Just ask the graph builder whether we are compiling a stub.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/83073003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18004 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-22 11:49:04 +00:00
bmeurer@chromium.org
da87c188ad Rework BuildCheckString() to be compatible with the other BuildCheck*() methods.
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/79343009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17985 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-22 07:27:26 +00:00
bmeurer@chromium.org
defee14d76 Make BuildBinaryOperation use ReturnValue instead of ReturnInstruction.
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/78183002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17914 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-20 12:00:57 +00:00
bmeurer@chromium.org
da6d5586f9 Don't generate useless string checks for string adds.
If we know that one side of a string add is definitely a string
(i.e. if it's a string constant), then we don't need to emit a
string check for the argument.

This adds a new BuildCheckString() method to the graph builder,
which does "the right thing".

TEST=mjsunit/string-add
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/78063002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17912 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-20 11:53:09 +00:00
dslomov@chromium.org
99133912bd Generate DataViewInitialize built-in in hydrogen.
R=bmeurer@chromium.org, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/66843011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17831 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-18 13:57:49 +00:00
danno@chromium.org
4ed2538262 Generate KeyedLoadDictionaryElementStub with Hydrogen
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/19492007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17804 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-15 17:53:35 +00:00
verwaest@chromium.org
341d405301 Reland and fix "Add support for keyed-call on arrays of fast elements"
BUG=
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/71783003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17782 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-15 10:52:05 +00:00
danno@chromium.org
d62337e127 Add ability to do "else-if" clauses in IfBuilder
- In an Else block it's possible to add more If<>'s in the same builder that are
  treated as an else if.
- Simplified and cleaned-up some of the IfBuilder's internals.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/66983002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17780 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-15 10:36:02 +00:00
machenbach@chromium.org
eef8694a7e [Sheriff] Revert "Add support for keyed-call on arrays of fast elements"
This reverts commit r17746 for breaking layout tests.

TBR=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/72753002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17751 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-14 15:00:13 +00:00
verwaest@chromium.org
607a175cbc Add support for keyed-call on arrays of fast elements
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23537067

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17746 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-14 13:46:18 +00:00
mvstanton@chromium.org
3cf157b43b Inline zero argument array constructor.
patch from issue 54583003 (dependent code).

Zero arguments - very easy

1 argument - three special cases:
  a) If length is a constant in valid array length range,
     no need to check it at runtime.
  b) respect DoNotInline feedback on the AllocationSite for
     cases that the argument is not a smi or is an integer
     with a length that should create a dictionary.
  c) if kind feedback is non-holey, and length is non-constant,
     we'd have to generate a lot of code to be correct.
     Don't inline this case.

N arguments - one special case:
  a) If a deopt ever occurs because an input argument isn't
     compatible with the elements kind, then set the
     DoNotInline flag.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/55933002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17741 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-14 12:05:09 +00:00
bmeurer@chromium.org
6f75e92902 Add initial hydrogenized NewStringAddStub.
The new stub is enabled via the --new-string-add flag, which is
disabled by default. For now, it's only a stripped down version
of the native StringAddStub, it's still work-in-progress.

BUG=v8:2990
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/61893009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17635 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-12 10:21:08 +00:00
ulan@chromium.org
bc4ad49b25 Do not add values to HGraph in Lithium.
Lithium uses indexes after the maximium value ID in the HGraph as indexes
of virtual registers and assumes that the maximum value ID does not change.

The IsStandardConstant and GetConstantXX functions could add constants to
HGraph, which aliased virtual registers with real values. This could confuse
the register allocator to think that a value in a virtual register is tagged
and to incorrectly set it in the pointer map.

BUG=298269
TEST=mjsunit/regress/regress-298269.js
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/66693002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17599 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-11-08 14:16:34 +00:00
ishell@chromium.org
a333094165 PushAndAdd() usages refactored.
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/36893002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17339 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-23 12:34:39 +00:00
ishell@chromium.org
32cdd4d48a More Hydrogen templatization.
Factories added to a set of Hydrogen classes.
Several old-style HXxx::New() replaced with New<HXxx>() and NewUncasted<HXxx>.
Several AddInstruction() calls following New::XXX() replaced with Add<XXX>().
AddLoadNamedField() method added to GraphBuilder.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/34523004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17318 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-22 11:29:05 +00:00
ishell@chromium.org
30a2a31f14 HEnvironmentMarker factory added
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/32513002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-21 14:18:55 +00:00
titzer@chromium.org
d63c8e4dc3 Allow constants to be deleted by reinserting them into the graph as needed.
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/31943002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17299 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-21 14:09:32 +00:00
danno@chromium.org
4c565138b5 Add tool to visualize machine code/lithium.
In the process:
- Add a command-line flag --opt-code-positions to track source position information throughout optimized code.
- Add a subclass of the hydrogen graph builder to ensure that the source position is properly set on the graph builder for all generated hydrogen code.
- Overhaul handling of source positions in hydrogen to ensure they are passed through to generated code consistently and in most cases transparently.

Originally reviewed in this CL: https://codereview.chromium.org/24957003/

Review URL: https://codereview.chromium.org/29123008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-21 13:35:48 +00:00
bmeurer@chromium.org
100fb55555 Inline number to string conversion for string addition into BinaryOp(Stub).
This fixes a performance regression that was caused by converting the
BinaryOpStub to a Hydrogen code stub. It also fixes a leftover TODO wrt.
the handling of Number*String or String*Number versions of the stub.

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/27674002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-21 12:42:08 +00:00
mvstanton@chromium.org
8f9f192f6e AllocationSites for all literals
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/24250005


Review URL: https://codereview.chromium.org/27366003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-16 08:10:36 +00:00
mvstanton@chromium.org
f4edc076d8 Revert "AllocationSites for all literals"
This reverts commit r17219 due to WebKit failures.

R=mstarzinger@chromium.org
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/26539010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-15 15:35:23 +00:00
jkummerow@chromium.org
ea4e0a3d28 Simplify array element access in Hydrogen.
No change in functionality intended.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/26986004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-15 15:06:04 +00:00
mvstanton@chromium.org
362c0cfbca AllocationSites for all literals
BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/24250005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-15 14:52:58 +00:00
olivf@chromium.org
66c610398f Reland "Hydrogenisation of binops"
BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/25494007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-10-04 08:17:11 +00:00