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386 Commits

Author SHA1 Message Date
danno@chromium.org
61a23ceb4d Refactor only: Rename JSGlobaPropertyCell to PropertyCell 
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/17064002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-14 16:06:12 +00:00
verwaest@chromium.org
84759d7e6e Cleanup RepresentationFromUseRequirements, move it to HValue and use it where relevant 
BUG=
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17005004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15155 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-14 14:13:48 +00:00
verwaest@chromium.org
1b5835f69f Remove manual representation annotations for constants. 
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16818016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15130 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-13 17:38:10 +00:00
danno@chromium.org
1b89cbf817 Separate Cell and PropertyCell spaces 
This makes it possible to store additional information on property cells, for example Type and optimized Code dependencies.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/16631002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15089 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-12 15:03:44 +00:00
mstarzinger@chromium.org
93ab1864ea Allow the deoptimizer translation to track de-materialized objects. 
This allows the deoptimizer to materialize objects (e.g. the arguments
object) while deopting without having a consective stack area holding
the object values. The LEnvironment explicitly tracks locations for
these values and preserves them in the translation.

R=svenpanne@chromium.org
TEST=mjsunit/compiler/inline-arguments

Review URL: https://codereview.chromium.org/16779004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15087 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-12 14:22:49 +00:00
yangguo@chromium.org
74556569d1 Reland "Enable map dependency to in-flight compilation info." 
BUG=248076
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16782004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15077 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-12 09:43:22 +00:00
yangguo@chromium.org
6da97b1d4a Revert "Enable map dependency to in-flight compilation info." 
This includes r15032, r15030 and r15005.

R=ulan@chromium.org
BUG=248076

Review URL: https://chromiumcodereview.appspot.com/16482004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-11 11:55:56 +00:00
jkummerow@chromium.org
9447014780 Skip some conditional deopts for Div/Mul when all uses are truncating. 
- set "can be minus zero" flag properly so minus-zero checks are skipped
- skip "integer result?" check in division code when uses are truncating
- drive-by cleanup: consolidated computation of kCanOverflow flag for Add/Sub into range inference phase

BUG=v8:2132
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16741002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-11 11:43:57 +00:00
svenpanne@chromium.org
66bb4c5b8d Improve code for integral modulus calculation. 
Depending on what we know about the right operand, we basically do 3
different things (and the code is actually structured this way):

* If we statically know that the right operand is a power of 2, we do
  some bit fiddling instead of doing a "real" modulus calculation.
  This should actually be done on the Hydrogen level, not on the
  Lithium level, but this will be a separate CL.

* If type feedback tells us that the right operand is a power of 2, we
  do the same as above, but guarded by conditional deoptimization to
  make sure that the assumption is still valid. In the long run, we
  should make this guard visible on the Hydrogen level to make it
  visible for GVN and other optimizations.

* In the general case we only do the minimum steps necessary and don't
  try to be too clever, because cleverness actually slows us down on
  real-world code.

If we look at the code gerators for LModI, we actually see that we
basically have 3 (4 on ARM) fundamentally different translations. I
don't really like lumping them together, they should probably be
different Lithium instructions. For the time being, I restructured the
generators to make this crystal-clear, at the cost of some duplication
regarding the power-of-2 cases. This will go away when we do the
strength reduction on the Hydrogen level, so I'd like to keep it as it
is for now.

Note that the MIPS part was only slightly restructured, there is still
some work to do there.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/15769010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-10 12:05:54 +00:00
yangguo@chromium.org
b0afb77731 Fix parallel recompilation wrt transition maps dependency. 
R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/15896038

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15032 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-10 11:33:23 +00:00
yangguo@chromium.org
17cfe68015 Enable map dependency to in-flight compilation info. 
R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/16542003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15005 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-07 13:27:03 +00:00
verwaest@chromium.org
8afeaabe57 Allow boundscheck elimination to work on Smi keys. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16035016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15001 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-07 11:00:39 +00:00
verwaest@chromium.org
a3dccd15b0 Don't ignore the actual input representation in UnaryMathOperations 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16035014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14997 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-07 09:11:33 +00:00
verwaest@chromium.org
cb3645fee9 Infer the range of Math.abs 
R=jkummerow@chromium.org, svenpanne@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16268009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14996 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-07 09:07:53 +00:00
mvstanton@chromium.org
56f3337ebc Adapt hydrogen-based Array constructor to also support InternalArray and function call 
versions.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/14576005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14948 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-05 10:43:18 +00:00
jkummerow@chromium.org
20cedf9a4b Liveness analysis for environment slots in Hydrogen 
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/15533004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14938 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-04 16:41:24 +00:00
mstarzinger@chromium.org
f8db2414f2 Deprecate FACTORY helper macro. 
This removes the FACTORY helper macro to avoid accidental TLS access
when using the factory. Most internal code has access to the Isolate by
now whereas tests which are not performance critical still heavily use
TLS access through explicit Isolate::Current() calls.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16337005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14931 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-04 10:30:05 +00:00
mstarzinger@chromium.org
d7975dfdab Deprecate HAllocateObject in favor of HAllocate. 
This models the instantiation of an implicit receiver for CallNew nodes
in hydrogen using HAllocate together with generic stores instead of one
specialized HAllocateObject instruction, hence creating a single choking
point for inlined allocation in optimized code.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/15714005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14930 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-04 08:28:33 +00:00
svenpanne@chromium.org
b9e025a8dc Collect type feedback for power-of-2 right operands in BinaryOps. 
Improved --trace-ic output for unary/binary ops a bit on the way. Moved int32_t/uint32_t conversion helpers around.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/15735005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14928 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-04 07:49:45 +00:00
verwaest@chromium.org
179ac2cd0c Improve smi support in crankshaft 
- Recover smi in phis if inputs are smi-typed
- Don't record smi-typed values as pointers

BUG=
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16240003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14926 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-03 16:57:36 +00:00
yangguo@chromium.org
7f8a3d803c Make assertion scopes thread safe. 
R=svenpanne@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/15691017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14919 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-03 15:32:22 +00:00
verwaest@chromium.org
1a4a904bef Replace DeoptimizeOnUndefined with whitelisting AllowUndefinedAsNan 
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15952007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14894 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-30 09:11:06 +00:00
olivf@chromium.org
88755fb22a Convert ToBooleanStub to a HydrogenStub. Currently just using the existing HBranch instruction, which is still fully implemented in Lithium. Will refactor HBranch in a next CL. 
[
CL breaks mips, since the deoptimizer in Deoptimizer::DoTranslateCommand(...) does not convert smis passed to the stub via a0.
]

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/15302004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14886 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-29 14:49:28 +00:00
svenpanne@chromium.org
7bfe1436d3 Improve range analysis for modulo operations. 
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/15952004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14884 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-29 12:42:04 +00:00
verwaest@chromium.org
7d32e7451f Don't explicitly pass requested representations to constants; implement ConstantS 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15932011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14874 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-29 10:47:55 +00:00
verwaest@chromium.org
4fcaace0a9 Always deoptimize on undefined if a double value implicitly gets converted. 
R=svenpanne@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16126002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14832 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-28 06:31:05 +00:00
verwaest@chromium.org
aa2444269b Fix the hole loading optimization. 
- Holes are only ever loaded as double or tagged.
- Change to tagged has to deoptimize on undefined (no implicit
  conversions from double the hole NaN -> tagged undefined).

BUG=
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16099006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14829 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-27 17:33:14 +00:00
verwaest@chromium.org
a64b7f926f Remove HCheckSmi, LCheckSmi and rename LCheckSmiAndReturn to LCheckSmi. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15841007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14816 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-27 09:58:46 +00:00
verwaest@chromium.org
3cb8f95c91 Tag smi-constants as smi. This also fixes code that copies holes into arrays. 
BUG=
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15861009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14814 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-27 08:43:58 +00:00
verwaest@chromium.org
2a28f53b18 Fix hole handling, and ensure smi representation is handled properly 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16013003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14807 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-24 13:40:02 +00:00
titzer@chromium.org
77f85fa0d3 Remove offset() and is_in_object() from hydrogen and lithium LoadNamedField and StoreNamedField and use the appropriate methods on HObjectAccess instead 
BUG=

Review URL: https://codereview.chromium.org/15881003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14806 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-24 12:40:08 +00:00
verwaest@chromium.org
c417df74f4 Update representation-from-uses to support smi. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15692004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14801 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-24 12:29:37 +00:00
verwaest@chromium.org
c9a22a3c8d Replace tagged keys for fast access by smi, and use smi in boundscheck. 
BUG=
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15763004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14794 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-24 08:52:35 +00:00
titzer@chromium.org
94b4240f5c Introduce ObjectAccess, which is used by LoadNamedField and StoreNamedField to denote what parts of an object are referred to by a given load or store. Refactor HGraphBuilder to use ObjectAccess, which removes the need to manually set GVN flags and simplifies the code as well. 
Review URL: https://codereview.chromium.org/14284010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14791 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-24 08:38:21 +00:00
verwaest@chromium.org
d057410e20 Require smi for keyed store to smi. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15884002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14779 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-23 15:01:17 +00:00
verwaest@chromium.org
632f591884 Tag length of FixedArrayBase and smi-array[x] as smi representation 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15858006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14778 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-23 14:38:39 +00:00
yangguo@chromium.org
a1e18bdf3c Improve SeqStringSetChar implementation. 
R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/15743006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-23 09:51:06 +00:00
jkummerow@chromium.org
f691f48c14 Avoid creating duplicate entries for a value when merging HSimulates 
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/15660003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14766 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-23 09:17:01 +00:00
verwaest@chromium.org
308e69755b Implement HChange support for Smis and use it in Load/StoreNameField 
BUG=
R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15303004

Patch from Daniel Clifford <danno@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14765 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-23 08:32:07 +00:00
verwaest@chromium.org
d1b5a2518d Handle holes in smi-untag from LoadKeyed requiring hole handling. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15737003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-22 16:32:33 +00:00
verwaest@chromium.org
b353b1d131 Don't allow copying holes to fields. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15745006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-22 15:33:53 +00:00
titzer@chromium.org
5746d38351 Fix code gen bug on arm and mips; SeqStringSetChar overwrites a register; Add better default PrintDataTo for HInstruction 
BUG=

Review URL: https://codereview.chromium.org/14895019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-16 14:27:39 +00:00
olivf@chromium.org
8bbe48c7b9 Add a HBreak instruction for debugging 
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/14997008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14691 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-15 14:24:47 +00:00
titzer@chromium.org
68eb1e50ca Improve dead code elimination by transitively marking live code and removing all dead code. Replace unreachable phi removal algorithm with the new dead code elimination pass, which is more thorough. 
Review URL: https://codereview.chromium.org/14676011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14661 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-14 13:10:52 +00:00
danno@chromium.org
6862babfd6 Remove HIsNilAndBranch (it's now unused) 
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/14971005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-14 12:56:53 +00:00
svenpanne@chromium.org
c1bc396c2d Consistently assume that arithmetic operations can overflow unless one can prove the opposite. 
Previously, HDiv never had its CanOverflow flag cleared and HMod had
inverted logic (compared to HAdd, HSub and HMul). Minor cleanups on the way.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/14617015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14644 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-13 13:48:15 +00:00
jkummerow@chromium.org
7636fdec27 Fix missing hole check for loads from Smi arrays when all uses are changes 
BUG=chromium:233737

Review URL: https://codereview.chromium.org/14978004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14638 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-13 11:58:10 +00:00
danno@chromium.org
05e8e0e7b4 Elide hole checks on KeyedLoads of holey double arrays 
Improves NavierStokes by about 5%

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/15014020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14630 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-13 07:35:26 +00:00
verwaest@chromium.org
df57747fc4 Track heap objects. 
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/14996004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-10 17:17:50 +00:00
mstarzinger@chromium.org
8829a94c24 Remove obsolete HArrayLiteral instruction. 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/14847013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14613 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-05-10 09:52:08 +00:00