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796 Commits

Author SHA1 Message Date
marja@chromium.org
3d9080a50f Revert "ARM: Use the shifter operand to merge in previous shift instructions." 
This reverts r 22017

Reason: broke Nexus 7 GPU bots (see crbug.com/389198)

BUG=389198
LOG=n
TBR=machenbach@chromium.org, ulan@chromium.org

Review URL: https://codereview.chromium.org/359713004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22050 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-27 08:55:41 +00:00
mvstanton@chromium.org
4273c7c070 Use IC register definitions in platform files. 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/356713003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22035 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-26 10:00:36 +00:00
danno@chromium.org
eaca750b29 Remove distinction between hidden and normal runtime functions 
R=jkummerow@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/346413004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22018 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-25 15:26:10 +00:00
alexandre.rames@arm.com
a7408e5124 ARM: Use the shifter operand to merge in previous shift instructions. 
When possible, we transform sequences of code of the form
    lsl r1, r2, #imm
    add r0, r5, r1
into
    add r0, r5, r2 LSL #imm

This is an adaptation of r21161.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/312173002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22017 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-25 15:11:00 +00:00
Jacob.Bramley@arm.com
cb3c7a0db9 ARM: optimize Lithium Allocate 
R=ulan@chromium.org, bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/331993004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21968 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-24 12:54:59 +00:00
mstarzinger@chromium.org
fec6e62dfb Check alpha-sorting of includes during presubmit. 
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/333013002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21894 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-20 08:40:11 +00:00
svenpanne@chromium.org
d82a6adac5 Emulate MLS on pre-ARMv6T2. Cleaned up thumbee vs. thumb2 confusion. 
This should unbreak things on the Raspberry Pi.

LOG=y
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/331803003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21835 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-13 10:50:11 +00:00
svenpanne@chromium.org
23fc5b75a8 Fixed flooring division by a power of 2, once again... 
Avoid right shifts by zero bits: On ARM it actually means shifting by
32 bits (correctness issue) and on other platforms they are useless
(performance issue). This is fix for the fix in r20544.

BUG=v8:3259
LOG=y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/324403003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-11 13:29:25 +00:00
svenpanne@chromium.org
2931f09144 Fix unsigned comparisons. 
Instead of marking the comparison instruction itself as Uint32, we
look at its arguments. This is more consistent what HChange does.

BUG=v8:3380
TEST=mjsunit/regress/regress-3380
LOG=y
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/325133004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21762 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-11 09:09:15 +00:00
ulan@chromium.org
c8b2fa454a Preliminary support for block contexts in hydrogen. 
Patch from Steven Keuchel <keuchel@chromium.org>

BUG=v8:2198
LOG=N
TEST=mjsunit/harmony/block-let-crankshaft.js
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/307593002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21684 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-05 07:33:01 +00:00
titzer@chromium.org
3c501d3a4b Rename ReverseCondition to CommuteCondition, a more standard term. 
R=dcarney@chromium.org, dcarney
BUG=

Review URL: https://codereview.chromium.org/313083006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21677 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-04 14:57:51 +00:00
bmeurer@chromium.org
c0e047d53f Improve write barriers in optimized code. 
Use a cheaper RecordWriteForMap() to update the
write barrier for maps. And skip the value check
in RecordWriteField() when we statically know that
the value is in new space (and therefore has "pointers
to here are interesting" flag set).

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/297763006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21630 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-03 10:59:11 +00:00
jochen@chromium.org
56a486c322 Use full include paths everywhere 
- this avoids using relative include paths which are forbidden by the style guide
- makes the code more readable since it's clear which header is meant
- allows for starting to use checkdeps

BUG=none
R=jkummerow@chromium.org, danno@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/304153016

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-03 08:12:43 +00:00
bmeurer@chromium.org
7d14f34a1b Inline Array.shift() fast path instead of using a code stub. 
TEST=mjsunit/array-shift,mjsunit/array-shift2,mjsunit/array-shift3
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/308793010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-06-02 07:02:24 +00:00
bmeurer@chromium.org
e9357a5e77 Refactor HType to get rid of various hacks. 
- Move HType to it's own file.
- Add HType::HeapObject and some other useful types.
- Get rid of the broken and useless HType::NonPrimitive.
- Introduce HType::FromType() to convert from HeapType to HType.
- Also add unit tests for HType.
- Fix types in Crankshaft.

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/300893003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21578 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-29 04:13:50 +00:00
bmeurer@chromium.org
7e8678bbaa Avoid HeapObject check in HStoreNamedField. 
This way an HStoreNamedField instruction can never deoptimize
itself, which is another important step towards a working
store elimination.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/299373005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21509 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-27 07:17:08 +00:00
bmeurer@chromium.org
683bc694ad Skip write barriers in the fast case when setting up local context. 
The FastNewContextStub always allocates in new space, so we don't
need to update the write barrier when copying the parameters to
the newly allocated context.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/297203002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-26 08:13:09 +00:00
danno@chromium.org
def6cff3da Allow specifying base offset when constructing Keyed hydrogen instructions 
This is preparation for pending hydrogen stub work that needs to access memory using KeyedLoad/KeyedStore operations where the base offset used for the accesses are is the the default (e.g. the size of an FixedArray header for FixedArrays or zero for external arrays).

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/295913009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21426 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-22 08:37:50 +00:00
bmeurer@chromium.org
a7e19c1a43 Revert "Refactor transitioning stores." 
This reverts commit r21383 for breaking the Mozilla tests.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/292993003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 13:03:25 +00:00
bmeurer@chromium.org
b09989ec58 Refactor transitioning stores. 
There's actually no need to have the transition as part of the HStoreNamedField instruction. In fact, it is cleaner and faster to generate a separate HStoreNamedField for the transition map. This will also help to eliminate map stores with store elimination, as well as reduce register pressure for transitioning stores on ia32.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/295743002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21383 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 11:06:23 +00:00
svenpanne@chromium.org
ec23d0b815 Allow comparison in UINT32 mode. 
Shamelessly based on parts of https://codereview.chromium.org/288853003/. :-)

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/288383002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21355 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:47:09 +00:00
bmeurer@chromium.org
ecadc63b60 Partial revert of "Next bunch of fixes for check elimination". 
This reverts the part of r21154 that introduced the CHECK()s to verify
state of objects with stable maps during code generation. The CHECK()s
seem to trigger a non-critical hidden bug in the map stability
mechanism. We will re-add these CHECK()s once the bug is found and
fixed.

BUG=372173
LOG=y
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/287363002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21352 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:08:47 +00:00
yangguo@chromium.org
7a5207803c Refactor MacroAssembler::Prologue. 
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/288213002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21329 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-15 12:10:00 +00:00
m.m.capewell@googlemail.com
41975b90c0 Fix FlooringDivByPowerOf2I on ARM/ARM64 
Fix for divisor=1, found during code inspection. We can't hit this bug, due to
HDiv::Canonicalize() discarding the operation, but it might avoid a future bug
hunt. Patch also includes a small tidying of the ARM64 code.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/280883003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21313 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-14 14:34:37 +00:00
yangguo@chromium.org
3ccedf8952 Clean up debugger flags. 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/261253005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21270 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-12 13:47:01 +00:00
bmeurer@chromium.org
7c45d49861 Improve Array.shift() performance for small arrays. 
TEST=mjsunit/array-shift,mjsunit/array-shift2,mjsunit/array-shift3
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/279743002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21203 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-09 08:28:25 +00:00
bmeurer@chromium.org
b040340fc2 Turn CHECK()s into ASSERT()s. 
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/275433002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21187 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-07 08:42:20 +00:00
bmeurer@chromium.org
a051bc5762 Next bunch of fixes for check elimination. 
- Canonicalize HCheckMapValue with constant map to
  HCheckMaps, and get rid of the special treatment
  during check elimination.
- Track only stable object maps for HConstants and
  add CHECK()s to verify state during code generation.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/263923004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21154 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-06 07:05:07 +00:00
bmeurer@chromium.org
785bdf7c1e Don't add code dependencies eagerly for HCheckMaps. 
Instead of adding code dependencies on stable during
graph creation, we now add them during code generation
for those HCheckMaps that survived dead code elimination.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/264973013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21139 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-05 11:03:14 +00:00
bmeurer@chromium.org
7c1036d424 Various cleanups in check elimination. 
- Move IsMapAccess() to HObjectAccess.
- Collect the actual objects instead of HStoreNamedFields in
  effects, and also consider HTransitionElementsKind.
- Fix ownership of HCheckMaps::maps() and HLoadNamedField::maps().
- Avoid heavy copying of the same map sets all the time during
  check elimination, and do something useful with the memory
  instead by slightly bumping the maximum number of tracked
  objects.
- Slightly optimize UniqueSet::Contains().

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/264693011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21133 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-05 06:53:19 +00:00
bmeurer@chromium.org
50d8259fea Fix crash in debug builds introduced with r21110. 
Basically we should not check for map deprecation during
code selection, because that may run on the concurrent
compiler thread. So the fix is to move this logic to the
code generation phase instead, which is always run on the
main thread.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/263803005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21112 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-02 08:08:23 +00:00
bmeurer@chromium.org
59e5c97ec0 Don't add code dependencies on transitioning stores eagerly. 
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/256303007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21110 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-02 06:37:54 +00:00
mvstanton@chromium.org
287f65aec9 CallICStub with a "never patch" approach by default. Patching will 
occur only when custom feedback needs to be gathered (future CLs).

Now rebased on https://codereview.chromium.org/254623002/, which moves the type feedback vector to the SharedFunctionInfo.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/247373002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-30 14:33:35 +00:00
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
yangguo@chromium.org
38b82f40d0 Remove some remnants of MaybeObjects in objects.*. 
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/256993003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21027 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-28 15:33:16 +00:00
svenpanne@chromium.org
b8d27f9d38 CodeStubs contain their corresponding Isolate* now. (part 2) 
This CL mechanically removes all useless Isolate* parameters from code
stub functions, making things quite a bit simpler.

BUG=359977
LOG=y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/255543003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20940 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-24 12:07:40 +00:00
svenpanne@chromium.org
dd30db9021 CodeStubs contain their corresponding Isolate* now. (part 1) 
This is a purely mechanical change, adding an Isolate* to the CodeStub
constructor and a corresponding field plus a getter. A few methods in
CodeStub and its subclasses can be simplified now, but this is done in
a separate CL.

The underlying reason apart from simplicity is that deep down in the
call chain we need to detect if the serializer is active or not. This
information will be part of the Isolate, not a global variable with
funky synchronization primitives around it (which is fundamentally
wrong and the underlying cause for race conditions and a catch-22
during initialization).

BUG=359977
LOG=y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/246643014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20919 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-24 06:25:42 +00:00
bmeurer@chromium.org
af05141176 Improve code generation for bounds checks. 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/246423005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20872 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-22 08:28:14 +00:00
bmeurer@chromium.org
eccda7f000 Fix field type handling in load elimination. 
Drive-by-fix: map_set() must return a pointer to the UniqueSet
instead of a copy.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/244383002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20870 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-22 07:24:05 +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
rmcilroy@chromium.org
c8df5f42a2 Use correct call size for PredictableCodeSizeScopes. 
If out-of-line constant pool is enabled, then calls can be 3 instructions
rather than 2.  Fix the hard-coded PredictableCodeSizeScopes values with values
based on CallSize instead.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/226503003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20577 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-08 12:28:28 +00:00
svenpanne@chromium.org
341ec1b50e Fixed flooring division by -1 on ARM. 
We should avoid ASR #0 on ARM. Simplified and improved code a bit
while we're there on all platforms. Human brains are very bad at
understanding nested structures...

BUG=v8:3259
LOG=y
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/227553003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20544 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-07 12:08:40 +00:00
mvstanton@chromium.org
9e5757abee Revert "Reland of https://codereview.chromium.org/172523002/" 
This reverts commit r20516 due to a Sunspider performance issue.

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/226233002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20521 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-04 16:18:59 +00:00
mvstanton@chromium.org
f9a8425cd2 Reland of https://codereview.chromium.org/172523002/ 
Fixed
1) Missing line in x64 port.
2) GcStress found a logic error in the IC miss handler.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/224903005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20516 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-04 13:57:53 +00:00
mvstanton@chromium.org
5c0d85163c Revert r20474 
This reverts commit r20474 due to an x64 release issue.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/223823002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20478 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-03 12:27:24 +00:00
mvstanton@chromium.org
c21cf2d334 Function calls are handled with a LoadIC and a FunctionCallStub. This works well, but we can create a platform to gather custom feedback by inventing a CallIC. CallIC takes a JSFunction as input, maintains UNINIT/MONO/MEGA state in a feedback slot, and engages in limited patching for the most efficient code. 
The change creates a degrade in NBody tests, but a follow-on CL addresses it by using this custom feedback platform to give a 45% improvement.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/172523002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20474 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-03 11:41:03 +00:00
jarin@chromium.org
0b53ed2d2b Check in Lithium that allocation size in Smi range. 
This is to avoid triggering an assertion from Smi::FromInt. The
generated code is unreachable, so it is not a real bug.

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/221743005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-04-03 07:04:46 +00:00